./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 9a8b2e8d 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_1.3.100.v20150511-1540.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_1.3.100.v20150511-1540.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 0.1.25-9a8b2e8 [2020-10-19 22:26:46,675 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:26:46,678 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:26:46,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:26:46,719 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:26:46,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:26:46,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:26:46,736 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:26:46,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:26:46,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:26:46,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:26:46,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:26:46,744 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:26:46,747 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:26:46,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:26:46,751 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:26:46,752 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:26:46,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:26:46,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:26:46,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:26:46,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:26:46,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:26:46,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:26:46,770 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:26:46,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:26:46,775 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:26:46,775 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:26:46,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:26:46,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:26:46,778 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:26:46,778 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:26:46,779 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:26:46,780 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:26:46,780 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:26:46,782 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:26:46,782 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:26:46,784 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:26:46,785 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:26:46,785 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:26:46,786 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:26:46,787 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:26:46,788 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:26:46,837 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:26:46,837 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:26:46,839 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:26:46,839 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:26:46,839 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:26:46,840 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:26:46,840 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:26:46,840 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:26:46,840 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:26:46,841 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:26:46,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:26:46,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:26:46,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:26:46,843 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:26:46,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:26:46,843 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:26:46,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:26:46,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:26:46,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:26:46,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:26:46,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:26:46,845 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:26:46,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:26:46,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:26:46,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:26:46,846 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:26:46,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:26:46,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:26:46,846 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:26:46,847 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 [2020-10-19 22:26:47,032 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:26:47,049 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:26:47,053 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:26:47,055 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:26:47,057 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:26:47,058 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-10-19 22:26:47,111 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144075170/8dc7dbb973ac4654ac19c78d95995b5f/FLAGa6255aa53 [2020-10-19 22:26:47,705 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:26:47,706 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-10-19 22:26:47,729 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144075170/8dc7dbb973ac4654ac19c78d95995b5f/FLAGa6255aa53 [2020-10-19 22:26:47,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/144075170/8dc7dbb973ac4654ac19c78d95995b5f [2020-10-19 22:26:47,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:26:47,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:26:47,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:26:47,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:26:47,896 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:26:47,897 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:26:47" (1/1) ... [2020-10-19 22:26:47,900 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a36d8fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:47, skipping insertion in model container [2020-10-19 22:26:47,900 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:26:47" (1/1) ... [2020-10-19 22:26:47,908 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:26:47,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:26:48,574 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:26:48,591 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:26:48,703 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:26:48,728 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:26:48,729 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48 WrapperNode [2020-10-19 22:26:48,729 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:26:48,730 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:26:48,730 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:26:48,730 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:26:48,742 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,770 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,826 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:26:48,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:26:48,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:26:48,827 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:26:48,840 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,840 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,864 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,948 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,952 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... [2020-10-19 22:26:48,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:26:48,983 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:26:48,984 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:26:48,984 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:26:48,985 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:26:49,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:26:49,057 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:26:49,058 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:26:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:26:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:26:49,059 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:26:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:26:49,060 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:26:49,060 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:26:49,302 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:26:50,345 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:26:50,346 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:26:50,358 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:26:50,358 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:26:50,361 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:26:50 BoogieIcfgContainer [2020-10-19 22:26:50,361 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:26:50,362 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:26:50,363 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:26:50,366 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:26:50,367 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:26:47" (1/3) ... [2020-10-19 22:26:50,368 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee754df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:26:50, skipping insertion in model container [2020-10-19 22:26:50,368 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:48" (2/3) ... [2020-10-19 22:26:50,369 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7ee754df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:26:50, skipping insertion in model container [2020-10-19 22:26:50,369 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:26:50" (3/3) ... [2020-10-19 22:26:50,371 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2020-10-19 22:26:50,408 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:26:50,416 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:26:50,430 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:26:50,457 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:26:50,458 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:26:50,458 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:26:50,458 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:26:50,459 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:26:50,459 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:26:50,459 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:26:50,459 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:26:50,479 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-10-19 22:26:50,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:26:50,489 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:50,490 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:50,490 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:50,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:50,497 INFO L82 PathProgramCache]: Analyzing trace with hash 522834703, now seen corresponding path program 1 times [2020-10-19 22:26:50,507 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:50,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690884791] [2020-10-19 22:26:50,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:50,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:50,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:50,919 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690884791] [2020-10-19 22:26:50,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:50,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:50,922 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874728642] [2020-10-19 22:26:50,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:50,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:50,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:50,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:50,952 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 4 states. [2020-10-19 22:26:51,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:51,666 INFO L93 Difference]: Finished difference Result 318 states and 531 transitions. [2020-10-19 22:26:51,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:51,668 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:26:51,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:51,688 INFO L225 Difference]: With dead ends: 318 [2020-10-19 22:26:51,689 INFO L226 Difference]: Without dead ends: 160 [2020-10-19 22:26:51,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:51,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-19 22:26:51,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2020-10-19 22:26:51,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:51,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 219 transitions. [2020-10-19 22:26:51,771 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 219 transitions. Word has length 45 [2020-10-19 22:26:51,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:51,772 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 219 transitions. [2020-10-19 22:26:51,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:51,772 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 219 transitions. [2020-10-19 22:26:51,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 22:26:51,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:51,780 INFO L422 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] [2020-10-19 22:26:51,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:26:51,781 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:51,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1923702817, now seen corresponding path program 1 times [2020-10-19 22:26:51,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:51,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1170223110] [2020-10-19 22:26:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:51,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:52,010 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:52,011 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1170223110] [2020-10-19 22:26:52,011 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:52,011 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:52,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [737677249] [2020-10-19 22:26:52,014 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:52,014 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:52,014 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:52,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:52,015 INFO L87 Difference]: Start difference. First operand 143 states and 219 transitions. Second operand 4 states. [2020-10-19 22:26:52,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:52,478 INFO L93 Difference]: Finished difference Result 284 states and 429 transitions. [2020-10-19 22:26:52,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:52,484 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-19 22:26:52,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:52,489 INFO L225 Difference]: With dead ends: 284 [2020-10-19 22:26:52,489 INFO L226 Difference]: Without dead ends: 160 [2020-10-19 22:26:52,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:52,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-19 22:26:52,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 143. [2020-10-19 22:26:52,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:52,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 218 transitions. [2020-10-19 22:26:52,532 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 218 transitions. Word has length 58 [2020-10-19 22:26:52,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:52,533 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 218 transitions. [2020-10-19 22:26:52,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:52,534 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 218 transitions. [2020-10-19 22:26:52,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:26:52,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:52,536 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:52,537 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:26:52,537 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:52,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:52,537 INFO L82 PathProgramCache]: Analyzing trace with hash -2009873572, now seen corresponding path program 1 times [2020-10-19 22:26:52,538 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:52,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746409620] [2020-10-19 22:26:52,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:52,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:52,653 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:52,654 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746409620] [2020-10-19 22:26:52,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:52,657 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:52,657 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559608109] [2020-10-19 22:26:52,658 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:52,658 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:52,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:52,658 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:52,658 INFO L87 Difference]: Start difference. First operand 143 states and 218 transitions. Second operand 4 states. [2020-10-19 22:26:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:53,065 INFO L93 Difference]: Finished difference Result 282 states and 426 transitions. [2020-10-19 22:26:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:53,066 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:26:53,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:53,068 INFO L225 Difference]: With dead ends: 282 [2020-10-19 22:26:53,068 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:26:53,070 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:53,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:26:53,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 143. [2020-10-19 22:26:53,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:53,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 217 transitions. [2020-10-19 22:26:53,096 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 217 transitions. Word has length 59 [2020-10-19 22:26:53,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:53,097 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 217 transitions. [2020-10-19 22:26:53,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:53,097 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 217 transitions. [2020-10-19 22:26:53,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:26:53,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:53,102 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:53,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:26:53,103 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:53,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:53,103 INFO L82 PathProgramCache]: Analyzing trace with hash 1439655328, now seen corresponding path program 1 times [2020-10-19 22:26:53,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:53,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851337918] [2020-10-19 22:26:53,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:53,260 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:53,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851337918] [2020-10-19 22:26:53,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:53,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:53,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431153032] [2020-10-19 22:26:53,262 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:53,262 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:53,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:53,263 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:53,263 INFO L87 Difference]: Start difference. First operand 143 states and 217 transitions. Second operand 4 states. [2020-10-19 22:26:53,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:53,678 INFO L93 Difference]: Finished difference Result 281 states and 424 transitions. [2020-10-19 22:26:53,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:53,679 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:26:53,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:53,681 INFO L225 Difference]: With dead ends: 281 [2020-10-19 22:26:53,681 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 22:26:53,682 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:53,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 22:26:53,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 143. [2020-10-19 22:26:53,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:53,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 216 transitions. [2020-10-19 22:26:53,692 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 216 transitions. Word has length 59 [2020-10-19 22:26:53,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:53,692 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 216 transitions. [2020-10-19 22:26:53,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:53,692 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 216 transitions. [2020-10-19 22:26:53,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-19 22:26:53,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:53,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:53,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:26:53,694 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:53,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:53,694 INFO L82 PathProgramCache]: Analyzing trace with hash 1630534542, now seen corresponding path program 1 times [2020-10-19 22:26:53,694 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:53,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597018902] [2020-10-19 22:26:53,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:53,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:53,799 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:53,799 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597018902] [2020-10-19 22:26:53,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:53,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:53,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931398401] [2020-10-19 22:26:53,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:53,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:53,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:53,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:53,802 INFO L87 Difference]: Start difference. First operand 143 states and 216 transitions. Second operand 4 states. [2020-10-19 22:26:54,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:54,144 INFO L93 Difference]: Finished difference Result 280 states and 422 transitions. [2020-10-19 22:26:54,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:54,145 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-19 22:26:54,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:54,146 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:26:54,147 INFO L226 Difference]: Without dead ends: 156 [2020-10-19 22:26:54,147 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:54,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-19 22:26:54,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-10-19 22:26:54,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:54,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 215 transitions. [2020-10-19 22:26:54,156 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 215 transitions. Word has length 60 [2020-10-19 22:26:54,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:54,156 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 215 transitions. [2020-10-19 22:26:54,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:54,156 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 215 transitions. [2020-10-19 22:26:54,157 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-19 22:26:54,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:54,158 INFO L422 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] [2020-10-19 22:26:54,158 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:26:54,158 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:54,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:54,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1839064698, now seen corresponding path program 1 times [2020-10-19 22:26:54,159 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:54,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718430846] [2020-10-19 22:26:54,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:54,240 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:54,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718430846] [2020-10-19 22:26:54,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:54,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:54,242 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048877508] [2020-10-19 22:26:54,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:54,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:54,242 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:54,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:54,243 INFO L87 Difference]: Start difference. First operand 143 states and 215 transitions. Second operand 4 states. [2020-10-19 22:26:54,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:54,621 INFO L93 Difference]: Finished difference Result 280 states and 421 transitions. [2020-10-19 22:26:54,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:54,622 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-19 22:26:54,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:54,623 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:26:54,623 INFO L226 Difference]: Without dead ends: 156 [2020-10-19 22:26:54,624 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:54,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-19 22:26:54,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-10-19 22:26:54,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:54,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 214 transitions. [2020-10-19 22:26:54,631 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 214 transitions. Word has length 60 [2020-10-19 22:26:54,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:54,631 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 214 transitions. [2020-10-19 22:26:54,631 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:54,631 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 214 transitions. [2020-10-19 22:26:54,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-19 22:26:54,632 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:54,632 INFO L422 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] [2020-10-19 22:26:54,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:26:54,633 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:54,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:54,633 INFO L82 PathProgramCache]: Analyzing trace with hash 476213239, now seen corresponding path program 1 times [2020-10-19 22:26:54,633 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:54,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1253496113] [2020-10-19 22:26:54,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:54,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:54,691 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:54,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1253496113] [2020-10-19 22:26:54,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:54,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:54,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270885574] [2020-10-19 22:26:54,692 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:54,692 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:54,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:54,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:54,693 INFO L87 Difference]: Start difference. First operand 143 states and 214 transitions. Second operand 4 states. [2020-10-19 22:26:55,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:55,045 INFO L93 Difference]: Finished difference Result 280 states and 420 transitions. [2020-10-19 22:26:55,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:55,046 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-19 22:26:55,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:55,047 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:26:55,048 INFO L226 Difference]: Without dead ends: 156 [2020-10-19 22:26:55,049 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:55,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-19 22:26:55,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-10-19 22:26:55,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:55,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 213 transitions. [2020-10-19 22:26:55,054 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 213 transitions. Word has length 61 [2020-10-19 22:26:55,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:55,055 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 213 transitions. [2020-10-19 22:26:55,055 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:55,055 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 213 transitions. [2020-10-19 22:26:55,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:26:55,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:55,056 INFO L422 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] [2020-10-19 22:26:55,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:26:55,056 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:55,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:55,057 INFO L82 PathProgramCache]: Analyzing trace with hash -25209675, now seen corresponding path program 1 times [2020-10-19 22:26:55,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:55,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646221082] [2020-10-19 22:26:55,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:55,116 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646221082] [2020-10-19 22:26:55,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:55,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:55,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1681252701] [2020-10-19 22:26:55,117 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:55,117 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:55,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:55,118 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:55,118 INFO L87 Difference]: Start difference. First operand 143 states and 213 transitions. Second operand 4 states. [2020-10-19 22:26:55,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:55,631 INFO L93 Difference]: Finished difference Result 280 states and 419 transitions. [2020-10-19 22:26:55,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:55,632 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:26:55,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:55,633 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:26:55,634 INFO L226 Difference]: Without dead ends: 156 [2020-10-19 22:26:55,634 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:55,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-19 22:26:55,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 143. [2020-10-19 22:26:55,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-19 22:26:55,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 212 transitions. [2020-10-19 22:26:55,643 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 212 transitions. Word has length 62 [2020-10-19 22:26:55,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:55,644 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 212 transitions. [2020-10-19 22:26:55,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:55,644 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 212 transitions. [2020-10-19 22:26:55,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:26:55,646 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:55,647 INFO L422 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] [2020-10-19 22:26:55,647 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:26:55,647 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:55,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:55,648 INFO L82 PathProgramCache]: Analyzing trace with hash 1383513241, now seen corresponding path program 1 times [2020-10-19 22:26:55,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:55,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180736551] [2020-10-19 22:26:55,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:55,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:55,746 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:55,746 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180736551] [2020-10-19 22:26:55,747 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:55,747 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:55,747 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511740236] [2020-10-19 22:26:55,748 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:55,748 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:55,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:55,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:55,749 INFO L87 Difference]: Start difference. First operand 143 states and 212 transitions. Second operand 4 states. [2020-10-19 22:26:56,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:56,127 INFO L93 Difference]: Finished difference Result 310 states and 467 transitions. [2020-10-19 22:26:56,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:56,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:26:56,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:56,131 INFO L225 Difference]: With dead ends: 310 [2020-10-19 22:26:56,131 INFO L226 Difference]: Without dead ends: 186 [2020-10-19 22:26:56,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:56,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-19 22:26:56,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2020-10-19 22:26:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 250 transitions. [2020-10-19 22:26:56,137 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 250 transitions. Word has length 62 [2020-10-19 22:26:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:56,138 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 250 transitions. [2020-10-19 22:26:56,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 250 transitions. [2020-10-19 22:26:56,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 22:26:56,139 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:56,139 INFO L422 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] [2020-10-19 22:26:56,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:26:56,140 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:56,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:56,140 INFO L82 PathProgramCache]: Analyzing trace with hash 407848530, now seen corresponding path program 1 times [2020-10-19 22:26:56,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:56,141 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361131453] [2020-10-19 22:26:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:56,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:56,193 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:56,194 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361131453] [2020-10-19 22:26:56,194 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:56,194 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:56,195 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825614598] [2020-10-19 22:26:56,195 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:56,195 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:56,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:56,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:56,196 INFO L87 Difference]: Start difference. First operand 165 states and 250 transitions. Second operand 4 states. [2020-10-19 22:26:56,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:56,498 INFO L93 Difference]: Finished difference Result 314 states and 481 transitions. [2020-10-19 22:26:56,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:56,499 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-19 22:26:56,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:56,501 INFO L225 Difference]: With dead ends: 314 [2020-10-19 22:26:56,501 INFO L226 Difference]: Without dead ends: 168 [2020-10-19 22:26:56,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:56,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-19 22:26:56,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 165. [2020-10-19 22:26:56,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:56,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 249 transitions. [2020-10-19 22:26:56,508 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 249 transitions. Word has length 63 [2020-10-19 22:26:56,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:56,508 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 249 transitions. [2020-10-19 22:26:56,508 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:56,508 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 249 transitions. [2020-10-19 22:26:56,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 22:26:56,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:56,510 INFO L422 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] [2020-10-19 22:26:56,510 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:26:56,510 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:56,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:56,511 INFO L82 PathProgramCache]: Analyzing trace with hash -1281685867, now seen corresponding path program 1 times [2020-10-19 22:26:56,511 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:56,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1605487661] [2020-10-19 22:26:56,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:56,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:56,577 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:56,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1605487661] [2020-10-19 22:26:56,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:56,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:56,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918639059] [2020-10-19 22:26:56,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:56,579 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:56,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:56,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:56,580 INFO L87 Difference]: Start difference. First operand 165 states and 249 transitions. Second operand 4 states. [2020-10-19 22:26:56,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:56,965 INFO L93 Difference]: Finished difference Result 332 states and 503 transitions. [2020-10-19 22:26:56,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:56,966 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-19 22:26:56,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:56,967 INFO L225 Difference]: With dead ends: 332 [2020-10-19 22:26:56,968 INFO L226 Difference]: Without dead ends: 186 [2020-10-19 22:26:56,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:56,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-19 22:26:56,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 165. [2020-10-19 22:26:56,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:56,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 248 transitions. [2020-10-19 22:26:56,974 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 248 transitions. Word has length 75 [2020-10-19 22:26:56,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:56,974 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 248 transitions. [2020-10-19 22:26:56,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:56,974 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 248 transitions. [2020-10-19 22:26:56,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:26:56,975 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:56,975 INFO L422 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] [2020-10-19 22:26:56,976 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:26:56,976 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:56,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:56,976 INFO L82 PathProgramCache]: Analyzing trace with hash 712782694, now seen corresponding path program 1 times [2020-10-19 22:26:56,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:56,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164633673] [2020-10-19 22:26:56,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:56,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:57,036 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:57,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164633673] [2020-10-19 22:26:57,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:57,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:57,037 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661280781] [2020-10-19 22:26:57,038 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:57,038 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:57,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:57,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:57,039 INFO L87 Difference]: Start difference. First operand 165 states and 248 transitions. Second operand 4 states. [2020-10-19 22:26:57,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:57,403 INFO L93 Difference]: Finished difference Result 330 states and 499 transitions. [2020-10-19 22:26:57,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:57,404 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:26:57,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:57,406 INFO L225 Difference]: With dead ends: 330 [2020-10-19 22:26:57,406 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 22:26:57,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:57,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 22:26:57,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 165. [2020-10-19 22:26:57,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:57,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 247 transitions. [2020-10-19 22:26:57,416 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 247 transitions. Word has length 76 [2020-10-19 22:26:57,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:57,417 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 247 transitions. [2020-10-19 22:26:57,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:57,417 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 247 transitions. [2020-10-19 22:26:57,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:26:57,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:57,419 INFO L422 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] [2020-10-19 22:26:57,420 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:26:57,420 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:57,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:57,421 INFO L82 PathProgramCache]: Analyzing trace with hash -132655702, now seen corresponding path program 1 times [2020-10-19 22:26:57,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:57,422 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779823225] [2020-10-19 22:26:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:57,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:57,502 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:57,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779823225] [2020-10-19 22:26:57,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:57,503 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:57,503 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315522628] [2020-10-19 22:26:57,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:57,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:57,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:57,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:57,507 INFO L87 Difference]: Start difference. First operand 165 states and 247 transitions. Second operand 4 states. [2020-10-19 22:26:57,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:57,850 INFO L93 Difference]: Finished difference Result 329 states and 496 transitions. [2020-10-19 22:26:57,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:57,851 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:26:57,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:57,854 INFO L225 Difference]: With dead ends: 329 [2020-10-19 22:26:57,854 INFO L226 Difference]: Without dead ends: 183 [2020-10-19 22:26:57,855 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:57,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-19 22:26:57,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 165. [2020-10-19 22:26:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:57,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 246 transitions. [2020-10-19 22:26:57,866 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 246 transitions. Word has length 76 [2020-10-19 22:26:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:57,868 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 246 transitions. [2020-10-19 22:26:57,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 246 transitions. [2020-10-19 22:26:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-19 22:26:57,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:57,870 INFO L422 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] [2020-10-19 22:26:57,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:26:57,870 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:57,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:57,871 INFO L82 PathProgramCache]: Analyzing trace with hash 133532868, now seen corresponding path program 1 times [2020-10-19 22:26:57,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:57,872 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605099671] [2020-10-19 22:26:57,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:57,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:57,917 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:57,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605099671] [2020-10-19 22:26:57,918 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:57,918 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:57,919 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776972017] [2020-10-19 22:26:57,919 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:57,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:57,920 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:57,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:57,920 INFO L87 Difference]: Start difference. First operand 165 states and 246 transitions. Second operand 4 states. [2020-10-19 22:26:58,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:58,221 INFO L93 Difference]: Finished difference Result 328 states and 493 transitions. [2020-10-19 22:26:58,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:58,221 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-19 22:26:58,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:58,223 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:26:58,223 INFO L226 Difference]: Without dead ends: 182 [2020-10-19 22:26:58,223 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:58,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-19 22:26:58,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-10-19 22:26:58,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 245 transitions. [2020-10-19 22:26:58,230 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 245 transitions. Word has length 77 [2020-10-19 22:26:58,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:58,230 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 245 transitions. [2020-10-19 22:26:58,230 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 245 transitions. [2020-10-19 22:26:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-19 22:26:58,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:58,231 INFO L422 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] [2020-10-19 22:26:58,231 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:26:58,231 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:58,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:58,232 INFO L82 PathProgramCache]: Analyzing trace with hash 342063024, now seen corresponding path program 1 times [2020-10-19 22:26:58,232 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:58,232 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482079482] [2020-10-19 22:26:58,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:58,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:58,283 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:58,283 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482079482] [2020-10-19 22:26:58,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:58,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:58,284 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096722066] [2020-10-19 22:26:58,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:58,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:58,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:58,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:58,285 INFO L87 Difference]: Start difference. First operand 165 states and 245 transitions. Second operand 4 states. [2020-10-19 22:26:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:58,693 INFO L93 Difference]: Finished difference Result 328 states and 491 transitions. [2020-10-19 22:26:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:58,693 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-19 22:26:58,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:58,695 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:26:58,695 INFO L226 Difference]: Without dead ends: 182 [2020-10-19 22:26:58,696 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:58,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-19 22:26:58,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-10-19 22:26:58,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:58,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 244 transitions. [2020-10-19 22:26:58,702 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 244 transitions. Word has length 77 [2020-10-19 22:26:58,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:58,703 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 244 transitions. [2020-10-19 22:26:58,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:58,703 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 244 transitions. [2020-10-19 22:26:58,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-19 22:26:58,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:58,704 INFO L422 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] [2020-10-19 22:26:58,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:26:58,705 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:58,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:58,705 INFO L82 PathProgramCache]: Analyzing trace with hash 1313801601, now seen corresponding path program 1 times [2020-10-19 22:26:58,706 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:58,706 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918124489] [2020-10-19 22:26:58,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:58,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:58,778 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:58,779 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918124489] [2020-10-19 22:26:58,780 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:58,780 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:58,780 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560993094] [2020-10-19 22:26:58,781 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:58,781 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:58,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:58,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:58,782 INFO L87 Difference]: Start difference. First operand 165 states and 244 transitions. Second operand 4 states. [2020-10-19 22:26:59,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:59,206 INFO L93 Difference]: Finished difference Result 328 states and 489 transitions. [2020-10-19 22:26:59,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:59,207 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-19 22:26:59,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:59,209 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:26:59,209 INFO L226 Difference]: Without dead ends: 182 [2020-10-19 22:26:59,210 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:59,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-19 22:26:59,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-10-19 22:26:59,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:59,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 243 transitions. [2020-10-19 22:26:59,216 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 243 transitions. Word has length 78 [2020-10-19 22:26:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:59,216 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 243 transitions. [2020-10-19 22:26:59,216 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 243 transitions. [2020-10-19 22:26:59,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-19 22:26:59,218 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:59,218 INFO L422 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] [2020-10-19 22:26:59,218 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:26:59,218 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:59,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:59,219 INFO L82 PathProgramCache]: Analyzing trace with hash 170225771, now seen corresponding path program 1 times [2020-10-19 22:26:59,219 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:59,219 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139197762] [2020-10-19 22:26:59,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:59,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:59,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139197762] [2020-10-19 22:26:59,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:59,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:59,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728002055] [2020-10-19 22:26:59,284 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:59,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:59,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:59,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:59,285 INFO L87 Difference]: Start difference. First operand 165 states and 243 transitions. Second operand 4 states. [2020-10-19 22:26:59,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:59,622 INFO L93 Difference]: Finished difference Result 328 states and 487 transitions. [2020-10-19 22:26:59,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:59,623 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-19 22:26:59,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:59,626 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:26:59,626 INFO L226 Difference]: Without dead ends: 182 [2020-10-19 22:26:59,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:59,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-19 22:26:59,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 165. [2020-10-19 22:26:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:26:59,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 242 transitions. [2020-10-19 22:26:59,636 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 242 transitions. Word has length 79 [2020-10-19 22:26:59,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:59,637 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 242 transitions. [2020-10-19 22:26:59,637 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:59,637 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 242 transitions. [2020-10-19 22:26:59,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-19 22:26:59,638 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:59,638 INFO L422 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] [2020-10-19 22:26:59,639 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:26:59,639 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:59,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:59,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2123587236, now seen corresponding path program 1 times [2020-10-19 22:26:59,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:59,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758422281] [2020-10-19 22:26:59,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:59,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:59,697 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:59,698 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758422281] [2020-10-19 22:26:59,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:59,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:59,699 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009544500] [2020-10-19 22:26:59,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:59,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:59,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:59,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:59,702 INFO L87 Difference]: Start difference. First operand 165 states and 242 transitions. Second operand 4 states. [2020-10-19 22:27:00,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:00,013 INFO L93 Difference]: Finished difference Result 318 states and 472 transitions. [2020-10-19 22:27:00,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:00,014 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 80 [2020-10-19 22:27:00,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:00,016 INFO L225 Difference]: With dead ends: 318 [2020-10-19 22:27:00,016 INFO L226 Difference]: Without dead ends: 172 [2020-10-19 22:27:00,017 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:00,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-19 22:27:00,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 165. [2020-10-19 22:27:00,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-19 22:27:00,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 241 transitions. [2020-10-19 22:27:00,023 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 241 transitions. Word has length 80 [2020-10-19 22:27:00,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:00,023 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 241 transitions. [2020-10-19 22:27:00,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:00,023 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 241 transitions. [2020-10-19 22:27:00,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:00,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:00,024 INFO L422 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] [2020-10-19 22:27:00,025 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:27:00,025 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:00,025 INFO L82 PathProgramCache]: Analyzing trace with hash -1575477095, now seen corresponding path program 1 times [2020-10-19 22:27:00,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:00,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401671272] [2020-10-19 22:27:00,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:00,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:00,110 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:00,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401671272] [2020-10-19 22:27:00,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:00,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:00,111 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003778895] [2020-10-19 22:27:00,111 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:00,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:00,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:00,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:00,112 INFO L87 Difference]: Start difference. First operand 165 states and 241 transitions. Second operand 4 states. [2020-10-19 22:27:00,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:00,682 INFO L93 Difference]: Finished difference Result 408 states and 610 transitions. [2020-10-19 22:27:00,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:00,682 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:00,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:00,684 INFO L225 Difference]: With dead ends: 408 [2020-10-19 22:27:00,685 INFO L226 Difference]: Without dead ends: 262 [2020-10-19 22:27:00,685 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:00,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-19 22:27:00,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 208. [2020-10-19 22:27:00,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 208 states. [2020-10-19 22:27:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 319 transitions. [2020-10-19 22:27:00,692 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 319 transitions. Word has length 84 [2020-10-19 22:27:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:00,692 INFO L481 AbstractCegarLoop]: Abstraction has 208 states and 319 transitions. [2020-10-19 22:27:00,692 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 319 transitions. [2020-10-19 22:27:00,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:00,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:00,694 INFO L422 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] [2020-10-19 22:27:00,694 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:27:00,694 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:00,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:00,695 INFO L82 PathProgramCache]: Analyzing trace with hash 1822096923, now seen corresponding path program 1 times [2020-10-19 22:27:00,695 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:00,695 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274266891] [2020-10-19 22:27:00,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:00,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:00,768 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:00,769 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274266891] [2020-10-19 22:27:00,769 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:00,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:00,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155808342] [2020-10-19 22:27:00,770 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:00,770 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:00,771 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:00,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:00,771 INFO L87 Difference]: Start difference. First operand 208 states and 319 transitions. Second operand 4 states. [2020-10-19 22:27:01,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:01,365 INFO L93 Difference]: Finished difference Result 446 states and 691 transitions. [2020-10-19 22:27:01,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:01,366 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:01,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:01,368 INFO L225 Difference]: With dead ends: 446 [2020-10-19 22:27:01,369 INFO L226 Difference]: Without dead ends: 257 [2020-10-19 22:27:01,369 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:01,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-19 22:27:01,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2020-10-19 22:27:01,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:01,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 361 transitions. [2020-10-19 22:27:01,379 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 361 transitions. Word has length 84 [2020-10-19 22:27:01,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:01,380 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 361 transitions. [2020-10-19 22:27:01,380 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:01,380 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 361 transitions. [2020-10-19 22:27:01,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:01,382 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:01,382 INFO L422 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] [2020-10-19 22:27:01,382 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:27:01,382 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:01,383 INFO L82 PathProgramCache]: Analyzing trace with hash 878453397, now seen corresponding path program 1 times [2020-10-19 22:27:01,383 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:01,383 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060064309] [2020-10-19 22:27:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:01,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:01,465 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:01,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060064309] [2020-10-19 22:27:01,466 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:01,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:01,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022660609] [2020-10-19 22:27:01,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:01,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:01,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:01,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:01,468 INFO L87 Difference]: Start difference. First operand 232 states and 361 transitions. Second operand 4 states. [2020-10-19 22:27:02,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:02,028 INFO L93 Difference]: Finished difference Result 499 states and 771 transitions. [2020-10-19 22:27:02,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:02,029 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:02,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:02,031 INFO L225 Difference]: With dead ends: 499 [2020-10-19 22:27:02,031 INFO L226 Difference]: Without dead ends: 286 [2020-10-19 22:27:02,032 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:02,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2020-10-19 22:27:02,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 232. [2020-10-19 22:27:02,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:02,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 360 transitions. [2020-10-19 22:27:02,040 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 360 transitions. Word has length 97 [2020-10-19 22:27:02,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:02,040 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 360 transitions. [2020-10-19 22:27:02,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:02,040 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 360 transitions. [2020-10-19 22:27:02,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:02,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:02,041 INFO L422 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] [2020-10-19 22:27:02,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:27:02,042 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:02,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:02,042 INFO L82 PathProgramCache]: Analyzing trace with hash 919128147, now seen corresponding path program 1 times [2020-10-19 22:27:02,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:02,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468060609] [2020-10-19 22:27:02,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:02,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:02,126 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:02,127 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468060609] [2020-10-19 22:27:02,127 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:02,127 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:02,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667632455] [2020-10-19 22:27:02,127 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:02,128 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:02,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:02,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:02,128 INFO L87 Difference]: Start difference. First operand 232 states and 360 transitions. Second operand 4 states. [2020-10-19 22:27:02,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:02,541 INFO L93 Difference]: Finished difference Result 470 states and 730 transitions. [2020-10-19 22:27:02,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:02,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:02,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:02,544 INFO L225 Difference]: With dead ends: 470 [2020-10-19 22:27:02,544 INFO L226 Difference]: Without dead ends: 257 [2020-10-19 22:27:02,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:02,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2020-10-19 22:27:02,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 232. [2020-10-19 22:27:02,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 359 transitions. [2020-10-19 22:27:02,552 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 359 transitions. Word has length 97 [2020-10-19 22:27:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:02,553 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 359 transitions. [2020-10-19 22:27:02,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 359 transitions. [2020-10-19 22:27:02,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:02,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:02,554 INFO L422 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] [2020-10-19 22:27:02,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:27:02,555 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:02,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:02,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1042376858, now seen corresponding path program 1 times [2020-10-19 22:27:02,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:02,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1689072039] [2020-10-19 22:27:02,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:02,629 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:02,630 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1689072039] [2020-10-19 22:27:02,630 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:02,630 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:02,630 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1010236083] [2020-10-19 22:27:02,630 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:02,631 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:02,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:02,631 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:02,631 INFO L87 Difference]: Start difference. First operand 232 states and 359 transitions. Second operand 4 states. [2020-10-19 22:27:03,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:03,290 INFO L93 Difference]: Finished difference Result 497 states and 765 transitions. [2020-10-19 22:27:03,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:03,291 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:03,294 INFO L225 Difference]: With dead ends: 497 [2020-10-19 22:27:03,295 INFO L226 Difference]: Without dead ends: 284 [2020-10-19 22:27:03,296 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:03,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-19 22:27:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 232. [2020-10-19 22:27:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:03,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 358 transitions. [2020-10-19 22:27:03,308 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 358 transitions. Word has length 98 [2020-10-19 22:27:03,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:03,309 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 358 transitions. [2020-10-19 22:27:03,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:03,309 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 358 transitions. [2020-10-19 22:27:03,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:03,311 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:03,312 INFO L422 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] [2020-10-19 22:27:03,312 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:27:03,312 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash -1887815254, now seen corresponding path program 1 times [2020-10-19 22:27:03,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:03,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2044497004] [2020-10-19 22:27:03,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:03,407 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:03,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2044497004] [2020-10-19 22:27:03,408 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:03,408 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:03,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [703308151] [2020-10-19 22:27:03,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:03,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:03,413 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:03,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:03,413 INFO L87 Difference]: Start difference. First operand 232 states and 358 transitions. Second operand 4 states. [2020-10-19 22:27:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:03,956 INFO L93 Difference]: Finished difference Result 496 states and 762 transitions. [2020-10-19 22:27:03,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:03,958 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:03,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:03,961 INFO L225 Difference]: With dead ends: 496 [2020-10-19 22:27:03,961 INFO L226 Difference]: Without dead ends: 283 [2020-10-19 22:27:03,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-19 22:27:03,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 232. [2020-10-19 22:27:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 357 transitions. [2020-10-19 22:27:03,972 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 357 transitions. Word has length 98 [2020-10-19 22:27:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:03,972 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 357 transitions. [2020-10-19 22:27:03,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:03,972 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 357 transitions. [2020-10-19 22:27:03,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:03,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:03,974 INFO L422 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] [2020-10-19 22:27:03,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:27:03,976 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:03,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:03,976 INFO L82 PathProgramCache]: Analyzing trace with hash 218540392, now seen corresponding path program 1 times [2020-10-19 22:27:03,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:03,977 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [171458653] [2020-10-19 22:27:03,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:04,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:04,058 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:04,058 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [171458653] [2020-10-19 22:27:04,059 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:04,059 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:04,059 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215164356] [2020-10-19 22:27:04,060 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:04,060 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:04,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:04,060 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:04,061 INFO L87 Difference]: Start difference. First operand 232 states and 357 transitions. Second operand 4 states. [2020-10-19 22:27:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:04,437 INFO L93 Difference]: Finished difference Result 468 states and 722 transitions. [2020-10-19 22:27:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:04,438 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:04,439 INFO L225 Difference]: With dead ends: 468 [2020-10-19 22:27:04,439 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 22:27:04,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:04,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 22:27:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 232. [2020-10-19 22:27:04,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 356 transitions. [2020-10-19 22:27:04,447 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 356 transitions. Word has length 98 [2020-10-19 22:27:04,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:04,447 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 356 transitions. [2020-10-19 22:27:04,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:04,447 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 356 transitions. [2020-10-19 22:27:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:04,448 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:04,448 INFO L422 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] [2020-10-19 22:27:04,449 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:27:04,449 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:04,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:04,450 INFO L82 PathProgramCache]: Analyzing trace with hash -626898004, now seen corresponding path program 1 times [2020-10-19 22:27:04,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:04,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893702152] [2020-10-19 22:27:04,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:04,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:04,506 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:04,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893702152] [2020-10-19 22:27:04,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:04,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:04,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736436012] [2020-10-19 22:27:04,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:04,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:04,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:04,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:04,508 INFO L87 Difference]: Start difference. First operand 232 states and 356 transitions. Second operand 4 states. [2020-10-19 22:27:04,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:04,875 INFO L93 Difference]: Finished difference Result 467 states and 719 transitions. [2020-10-19 22:27:04,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:04,876 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:04,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:04,877 INFO L225 Difference]: With dead ends: 467 [2020-10-19 22:27:04,877 INFO L226 Difference]: Without dead ends: 254 [2020-10-19 22:27:04,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2020-10-19 22:27:04,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 232. [2020-10-19 22:27:04,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:04,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 355 transitions. [2020-10-19 22:27:04,885 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 355 transitions. Word has length 98 [2020-10-19 22:27:04,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:04,886 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 355 transitions. [2020-10-19 22:27:04,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:04,886 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 355 transitions. [2020-10-19 22:27:04,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:04,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:04,887 INFO L422 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] [2020-10-19 22:27:04,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:27:04,889 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:04,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:04,890 INFO L82 PathProgramCache]: Analyzing trace with hash 1558161604, now seen corresponding path program 1 times [2020-10-19 22:27:04,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:04,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1318314167] [2020-10-19 22:27:04,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:04,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:04,976 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:04,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1318314167] [2020-10-19 22:27:04,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:04,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:04,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605151582] [2020-10-19 22:27:04,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:04,978 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:04,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:04,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:04,978 INFO L87 Difference]: Start difference. First operand 232 states and 355 transitions. Second operand 4 states. [2020-10-19 22:27:05,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:05,444 INFO L93 Difference]: Finished difference Result 495 states and 755 transitions. [2020-10-19 22:27:05,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:05,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:27:05,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:05,447 INFO L225 Difference]: With dead ends: 495 [2020-10-19 22:27:05,448 INFO L226 Difference]: Without dead ends: 282 [2020-10-19 22:27:05,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:05,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-19 22:27:05,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-10-19 22:27:05,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-10-19 22:27:05,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 354 transitions. [2020-10-19 22:27:05,455 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 354 transitions. Word has length 99 [2020-10-19 22:27:05,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:05,455 INFO L481 AbstractCegarLoop]: Abstraction has 232 states and 354 transitions. [2020-10-19 22:27:05,455 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:05,455 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 354 transitions. [2020-10-19 22:27:05,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:05,456 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:05,456 INFO L422 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] [2020-10-19 22:27:05,457 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 22:27:05,457 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:05,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:05,457 INFO L82 PathProgramCache]: Analyzing trace with hash 1766691760, now seen corresponding path program 1 times [2020-10-19 22:27:05,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:05,458 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2051027375] [2020-10-19 22:27:05,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-19 22:27:05,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2051027375] [2020-10-19 22:27:05,530 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:05,530 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:27:05,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2098967831] [2020-10-19 22:27:05,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:27:05,531 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:05,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:27:05,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:05,532 INFO L87 Difference]: Start difference. First operand 232 states and 354 transitions. Second operand 5 states. [2020-10-19 22:27:06,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:06,010 INFO L93 Difference]: Finished difference Result 466 states and 716 transitions. [2020-10-19 22:27:06,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:27:06,012 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 99 [2020-10-19 22:27:06,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:06,013 INFO L225 Difference]: With dead ends: 466 [2020-10-19 22:27:06,014 INFO L226 Difference]: Without dead ends: 253 [2020-10-19 22:27:06,014 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:27:06,015 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-10-19 22:27:06,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 252. [2020-10-19 22:27:06,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:06,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 380 transitions. [2020-10-19 22:27:06,021 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 380 transitions. Word has length 99 [2020-10-19 22:27:06,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:06,022 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 380 transitions. [2020-10-19 22:27:06,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:27:06,022 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 380 transitions. [2020-10-19 22:27:06,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:06,023 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:06,023 INFO L422 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] [2020-10-19 22:27:06,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 22:27:06,023 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:06,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:06,024 INFO L82 PathProgramCache]: Analyzing trace with hash -907239660, now seen corresponding path program 1 times [2020-10-19 22:27:06,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:06,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445120893] [2020-10-19 22:27:06,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:06,086 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:06,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445120893] [2020-10-19 22:27:06,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:06,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:06,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396205522] [2020-10-19 22:27:06,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:06,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:06,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:06,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:06,088 INFO L87 Difference]: Start difference. First operand 252 states and 380 transitions. Second operand 4 states. [2020-10-19 22:27:06,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:06,566 INFO L93 Difference]: Finished difference Result 535 states and 804 transitions. [2020-10-19 22:27:06,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:06,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:06,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:06,570 INFO L225 Difference]: With dead ends: 535 [2020-10-19 22:27:06,570 INFO L226 Difference]: Without dead ends: 302 [2020-10-19 22:27:06,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:06,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-19 22:27:06,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2020-10-19 22:27:06,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:06,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 379 transitions. [2020-10-19 22:27:06,579 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 379 transitions. Word has length 100 [2020-10-19 22:27:06,579 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:06,579 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 379 transitions. [2020-10-19 22:27:06,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:06,580 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 379 transitions. [2020-10-19 22:27:06,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:06,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:06,581 INFO L422 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] [2020-10-19 22:27:06,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 22:27:06,581 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:06,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:06,581 INFO L82 PathProgramCache]: Analyzing trace with hash -346539882, now seen corresponding path program 1 times [2020-10-19 22:27:06,582 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:06,582 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191561763] [2020-10-19 22:27:06,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:06,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:06,641 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:06,641 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191561763] [2020-10-19 22:27:06,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:06,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:06,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325800367] [2020-10-19 22:27:06,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:06,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:06,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:06,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:06,645 INFO L87 Difference]: Start difference. First operand 252 states and 379 transitions. Second operand 4 states. [2020-10-19 22:27:07,007 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:07,007 INFO L93 Difference]: Finished difference Result 506 states and 763 transitions. [2020-10-19 22:27:07,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:07,008 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:07,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:07,010 INFO L225 Difference]: With dead ends: 506 [2020-10-19 22:27:07,010 INFO L226 Difference]: Without dead ends: 273 [2020-10-19 22:27:07,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:07,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-19 22:27:07,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2020-10-19 22:27:07,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:07,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 378 transitions. [2020-10-19 22:27:07,020 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 378 transitions. Word has length 100 [2020-10-19 22:27:07,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:07,020 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 378 transitions. [2020-10-19 22:27:07,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:07,021 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 378 transitions. [2020-10-19 22:27:07,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:07,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:07,022 INFO L422 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] [2020-10-19 22:27:07,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 22:27:07,023 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:07,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:07,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1206682467, now seen corresponding path program 1 times [2020-10-19 22:27:07,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:07,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512469966] [2020-10-19 22:27:07,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:07,094 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:07,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512469966] [2020-10-19 22:27:07,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:07,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:07,095 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294812813] [2020-10-19 22:27:07,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:07,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:07,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:07,096 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:07,096 INFO L87 Difference]: Start difference. First operand 252 states and 378 transitions. Second operand 4 states. [2020-10-19 22:27:07,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:07,575 INFO L93 Difference]: Finished difference Result 535 states and 800 transitions. [2020-10-19 22:27:07,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:07,576 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:07,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:07,577 INFO L225 Difference]: With dead ends: 535 [2020-10-19 22:27:07,577 INFO L226 Difference]: Without dead ends: 302 [2020-10-19 22:27:07,578 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:07,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-19 22:27:07,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2020-10-19 22:27:07,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:07,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 377 transitions. [2020-10-19 22:27:07,587 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 377 transitions. Word has length 101 [2020-10-19 22:27:07,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:07,588 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 377 transitions. [2020-10-19 22:27:07,588 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:07,588 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 377 transitions. [2020-10-19 22:27:07,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:07,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:07,589 INFO L422 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] [2020-10-19 22:27:07,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 22:27:07,590 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:07,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:07,591 INFO L82 PathProgramCache]: Analyzing trace with hash 1408506401, now seen corresponding path program 1 times [2020-10-19 22:27:07,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:07,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131941814] [2020-10-19 22:27:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:07,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:07,653 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:07,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131941814] [2020-10-19 22:27:07,654 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:07,654 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:07,654 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422502367] [2020-10-19 22:27:07,654 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:07,655 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:07,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:07,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:07,656 INFO L87 Difference]: Start difference. First operand 252 states and 377 transitions. Second operand 4 states. [2020-10-19 22:27:08,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:08,008 INFO L93 Difference]: Finished difference Result 506 states and 759 transitions. [2020-10-19 22:27:08,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:08,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:08,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:08,011 INFO L225 Difference]: With dead ends: 506 [2020-10-19 22:27:08,011 INFO L226 Difference]: Without dead ends: 273 [2020-10-19 22:27:08,011 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:08,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-19 22:27:08,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2020-10-19 22:27:08,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:08,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 376 transitions. [2020-10-19 22:27:08,020 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 376 transitions. Word has length 101 [2020-10-19 22:27:08,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:08,021 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 376 transitions. [2020-10-19 22:27:08,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:08,021 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 376 transitions. [2020-10-19 22:27:08,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:08,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:08,022 INFO L422 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] [2020-10-19 22:27:08,023 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 22:27:08,023 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:08,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:08,023 INFO L82 PathProgramCache]: Analyzing trace with hash -610222663, now seen corresponding path program 1 times [2020-10-19 22:27:08,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:08,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821051259] [2020-10-19 22:27:08,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:08,086 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:08,086 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821051259] [2020-10-19 22:27:08,086 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:08,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:08,087 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810810556] [2020-10-19 22:27:08,087 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:08,087 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:08,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:08,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:08,088 INFO L87 Difference]: Start difference. First operand 252 states and 376 transitions. Second operand 4 states. [2020-10-19 22:27:08,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:08,569 INFO L93 Difference]: Finished difference Result 535 states and 796 transitions. [2020-10-19 22:27:08,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:08,569 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:08,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:08,572 INFO L225 Difference]: With dead ends: 535 [2020-10-19 22:27:08,572 INFO L226 Difference]: Without dead ends: 302 [2020-10-19 22:27:08,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:08,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-19 22:27:08,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 252. [2020-10-19 22:27:08,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:08,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 375 transitions. [2020-10-19 22:27:08,581 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 375 transitions. Word has length 102 [2020-10-19 22:27:08,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:08,581 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 375 transitions. [2020-10-19 22:27:08,582 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:08,582 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 375 transitions. [2020-10-19 22:27:08,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:08,583 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:08,583 INFO L422 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] [2020-10-19 22:27:08,583 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 22:27:08,584 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:08,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:08,584 INFO L82 PathProgramCache]: Analyzing trace with hash 1351351995, now seen corresponding path program 1 times [2020-10-19 22:27:08,584 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:08,585 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640030031] [2020-10-19 22:27:08,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:08,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:08,642 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:08,643 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640030031] [2020-10-19 22:27:08,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:08,643 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:08,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922249885] [2020-10-19 22:27:08,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:08,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:08,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:08,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:08,645 INFO L87 Difference]: Start difference. First operand 252 states and 375 transitions. Second operand 4 states. [2020-10-19 22:27:09,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:09,023 INFO L93 Difference]: Finished difference Result 506 states and 755 transitions. [2020-10-19 22:27:09,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:09,024 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:09,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:09,025 INFO L225 Difference]: With dead ends: 506 [2020-10-19 22:27:09,026 INFO L226 Difference]: Without dead ends: 273 [2020-10-19 22:27:09,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:09,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-19 22:27:09,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 252. [2020-10-19 22:27:09,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:09,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 374 transitions. [2020-10-19 22:27:09,034 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 374 transitions. Word has length 102 [2020-10-19 22:27:09,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:09,034 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 374 transitions. [2020-10-19 22:27:09,034 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:09,034 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 374 transitions. [2020-10-19 22:27:09,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:27:09,037 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,037 INFO L422 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] [2020-10-19 22:27:09,037 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 22:27:09,038 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,038 INFO L82 PathProgramCache]: Analyzing trace with hash 271278824, now seen corresponding path program 1 times [2020-10-19 22:27:09,038 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984625226] [2020-10-19 22:27:09,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:09,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:09,098 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:09,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984625226] [2020-10-19 22:27:09,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:09,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:09,100 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716820958] [2020-10-19 22:27:09,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:09,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:09,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:09,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:09,102 INFO L87 Difference]: Start difference. First operand 252 states and 374 transitions. Second operand 4 states. [2020-10-19 22:27:09,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:09,638 INFO L93 Difference]: Finished difference Result 525 states and 780 transitions. [2020-10-19 22:27:09,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:09,639 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-19 22:27:09,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:09,641 INFO L225 Difference]: With dead ends: 525 [2020-10-19 22:27:09,641 INFO L226 Difference]: Without dead ends: 292 [2020-10-19 22:27:09,642 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:09,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-19 22:27:09,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 252. [2020-10-19 22:27:09,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:09,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 373 transitions. [2020-10-19 22:27:09,649 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 373 transitions. Word has length 103 [2020-10-19 22:27:09,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:09,650 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 373 transitions. [2020-10-19 22:27:09,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:09,650 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 373 transitions. [2020-10-19 22:27:09,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:27:09,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,651 INFO L422 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] [2020-10-19 22:27:09,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 22:27:09,652 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,652 INFO L82 PathProgramCache]: Analyzing trace with hash 950551078, now seen corresponding path program 1 times [2020-10-19 22:27:09,652 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183708738] [2020-10-19 22:27:09,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:09,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:09,710 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:09,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183708738] [2020-10-19 22:27:09,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:09,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:09,712 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1432837833] [2020-10-19 22:27:09,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:09,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:09,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:09,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:09,713 INFO L87 Difference]: Start difference. First operand 252 states and 373 transitions. Second operand 4 states. [2020-10-19 22:27:10,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:10,126 INFO L93 Difference]: Finished difference Result 496 states and 739 transitions. [2020-10-19 22:27:10,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:10,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-19 22:27:10,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:10,129 INFO L225 Difference]: With dead ends: 496 [2020-10-19 22:27:10,129 INFO L226 Difference]: Without dead ends: 263 [2020-10-19 22:27:10,130 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:10,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-10-19 22:27:10,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 252. [2020-10-19 22:27:10,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:10,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 372 transitions. [2020-10-19 22:27:10,138 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 372 transitions. Word has length 103 [2020-10-19 22:27:10,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:10,139 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 372 transitions. [2020-10-19 22:27:10,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:10,139 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 372 transitions. [2020-10-19 22:27:10,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:10,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:10,140 INFO L422 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] [2020-10-19 22:27:10,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 22:27:10,141 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:10,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:10,141 INFO L82 PathProgramCache]: Analyzing trace with hash -504345715, now seen corresponding path program 1 times [2020-10-19 22:27:10,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:10,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115303418] [2020-10-19 22:27:10,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,221 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:10,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115303418] [2020-10-19 22:27:10,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:10,223 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872730642] [2020-10-19 22:27:10,224 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:10,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:10,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:10,225 INFO L87 Difference]: Start difference. First operand 252 states and 372 transitions. Second operand 4 states. [2020-10-19 22:27:10,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:10,676 INFO L93 Difference]: Finished difference Result 525 states and 776 transitions. [2020-10-19 22:27:10,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:10,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-19 22:27:10,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:10,679 INFO L225 Difference]: With dead ends: 525 [2020-10-19 22:27:10,679 INFO L226 Difference]: Without dead ends: 292 [2020-10-19 22:27:10,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:10,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-19 22:27:10,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 252. [2020-10-19 22:27:10,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-10-19 22:27:10,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 371 transitions. [2020-10-19 22:27:10,688 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 371 transitions. Word has length 106 [2020-10-19 22:27:10,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:10,688 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 371 transitions. [2020-10-19 22:27:10,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:10,688 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 371 transitions. [2020-10-19 22:27:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:10,689 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:10,690 INFO L422 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] [2020-10-19 22:27:10,690 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-19 22:27:10,690 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:10,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:10,691 INFO L82 PathProgramCache]: Analyzing trace with hash 2104441743, now seen corresponding path program 1 times [2020-10-19 22:27:10,691 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:10,691 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828737817] [2020-10-19 22:27:10,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,760 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:27:10,761 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828737817] [2020-10-19 22:27:10,761 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,761 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:10,761 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796804656] [2020-10-19 22:27:10,763 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:10,763 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:10,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:10,764 INFO L87 Difference]: Start difference. First operand 252 states and 371 transitions. Second operand 3 states. [2020-10-19 22:27:10,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:10,832 INFO L93 Difference]: Finished difference Result 714 states and 1066 transitions. [2020-10-19 22:27:10,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:10,833 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:10,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:10,836 INFO L225 Difference]: With dead ends: 714 [2020-10-19 22:27:10,837 INFO L226 Difference]: Without dead ends: 481 [2020-10-19 22:27:10,838 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:10,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2020-10-19 22:27:10,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 481. [2020-10-19 22:27:10,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 481 states. [2020-10-19 22:27:10,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 711 transitions. [2020-10-19 22:27:10,866 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 711 transitions. Word has length 106 [2020-10-19 22:27:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:10,866 INFO L481 AbstractCegarLoop]: Abstraction has 481 states and 711 transitions. [2020-10-19 22:27:10,867 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 711 transitions. [2020-10-19 22:27:10,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:10,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:10,869 INFO L422 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] [2020-10-19 22:27:10,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 22:27:10,869 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:10,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:10,870 INFO L82 PathProgramCache]: Analyzing trace with hash 888288017, now seen corresponding path program 1 times [2020-10-19 22:27:10,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:10,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140201474] [2020-10-19 22:27:10,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-19 22:27:10,931 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [140201474] [2020-10-19 22:27:10,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:10,932 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123172614] [2020-10-19 22:27:10,932 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:10,933 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:10,933 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:10,934 INFO L87 Difference]: Start difference. First operand 481 states and 711 transitions. Second operand 3 states. [2020-10-19 22:27:11,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,008 INFO L93 Difference]: Finished difference Result 970 states and 1437 transitions. [2020-10-19 22:27:11,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:11,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:11,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,013 INFO L225 Difference]: With dead ends: 970 [2020-10-19 22:27:11,013 INFO L226 Difference]: Without dead ends: 508 [2020-10-19 22:27:11,015 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:11,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2020-10-19 22:27:11,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2020-10-19 22:27:11,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 508 states. [2020-10-19 22:27:11,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 746 transitions. [2020-10-19 22:27:11,034 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 746 transitions. Word has length 106 [2020-10-19 22:27:11,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,035 INFO L481 AbstractCegarLoop]: Abstraction has 508 states and 746 transitions. [2020-10-19 22:27:11,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:11,035 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 746 transitions. [2020-10-19 22:27:11,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:11,039 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,039 INFO L422 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] [2020-10-19 22:27:11,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-19 22:27:11,040 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,041 INFO L82 PathProgramCache]: Analyzing trace with hash 302011795, now seen corresponding path program 1 times [2020-10-19 22:27:11,041 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,041 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349082986] [2020-10-19 22:27:11,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-19 22:27:11,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349082986] [2020-10-19 22:27:11,097 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:11,097 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:11,097 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901093947] [2020-10-19 22:27:11,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:11,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:11,098 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:11,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:11,099 INFO L87 Difference]: Start difference. First operand 508 states and 746 transitions. Second operand 3 states. [2020-10-19 22:27:11,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,134 INFO L93 Difference]: Finished difference Result 999 states and 1473 transitions. [2020-10-19 22:27:11,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:11,135 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:11,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,138 INFO L225 Difference]: With dead ends: 999 [2020-10-19 22:27:11,138 INFO L226 Difference]: Without dead ends: 510 [2020-10-19 22:27:11,140 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:11,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-19 22:27:11,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2020-10-19 22:27:11,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-19 22:27:11,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 748 transitions. [2020-10-19 22:27:11,157 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 748 transitions. Word has length 106 [2020-10-19 22:27:11,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,158 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 748 transitions. [2020-10-19 22:27:11,158 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:11,158 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 748 transitions. [2020-10-19 22:27:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:27:11,161 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,161 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:11,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-19 22:27:11,162 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,162 INFO L82 PathProgramCache]: Analyzing trace with hash 1080065455, now seen corresponding path program 1 times [2020-10-19 22:27:11,163 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101640953] [2020-10-19 22:27:11,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:11,282 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-19 22:27:11,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101640953] [2020-10-19 22:27:11,282 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:11,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:11,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530649310] [2020-10-19 22:27:11,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:11,284 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:11,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:11,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:11,284 INFO L87 Difference]: Start difference. First operand 510 states and 748 transitions. Second operand 3 states. [2020-10-19 22:27:11,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,360 INFO L93 Difference]: Finished difference Result 999 states and 1472 transitions. [2020-10-19 22:27:11,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:11,361 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 125 [2020-10-19 22:27:11,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,364 INFO L225 Difference]: With dead ends: 999 [2020-10-19 22:27:11,364 INFO L226 Difference]: Without dead ends: 510 [2020-10-19 22:27:11,365 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:11,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 510 states. [2020-10-19 22:27:11,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 510 to 510. [2020-10-19 22:27:11,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 510 states. [2020-10-19 22:27:11,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 743 transitions. [2020-10-19 22:27:11,383 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 743 transitions. Word has length 125 [2020-10-19 22:27:11,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,383 INFO L481 AbstractCegarLoop]: Abstraction has 510 states and 743 transitions. [2020-10-19 22:27:11,384 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 743 transitions. [2020-10-19 22:27:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-19 22:27:11,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,385 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:11,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-19 22:27:11,386 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,386 INFO L82 PathProgramCache]: Analyzing trace with hash -877709346, now seen corresponding path program 1 times [2020-10-19 22:27:11,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653443200] [2020-10-19 22:27:11,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:11,549 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:11,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:11,676 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:11,800 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:27:11,800 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:11,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-19 22:27:11,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:11 BoogieIcfgContainer [2020-10-19 22:27:11,938 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:11,939 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:11,939 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:11,939 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:11,940 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:26:50" (3/4) ... [2020-10-19 22:27:11,944 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:27:11,944 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:11,946 INFO L168 Benchmark]: Toolchain (without parser) took 24059.06 ms. Allocated memory was 44.6 MB in the beginning and 158.3 MB in the end (delta: 113.8 MB). Free memory was 23.2 MB in the beginning and 61.8 MB in the end (delta: -38.6 MB). Peak memory consumption was 75.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:11,947 INFO L168 Benchmark]: CDTParser took 0.80 ms. Allocated memory is still 33.0 MB. Free memory was 12.1 MB in the beginning and 12.0 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. [2020-10-19 22:27:11,947 INFO L168 Benchmark]: CACSL2BoogieTranslator took 837.36 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 19.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:11,948 INFO L168 Benchmark]: Boogie Procedure Inliner took 96.05 ms. Allocated memory is still 46.7 MB. Free memory was 19.9 MB in the beginning and 15.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:11,948 INFO L168 Benchmark]: Boogie Preprocessor took 132.32 ms. Allocated memory is still 46.7 MB. Free memory was 15.0 MB in the beginning and 7.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:11,949 INFO L168 Benchmark]: RCFGBuilder took 1377.87 ms. Allocated memory was 47.7 MB in the beginning and 57.1 MB in the end (delta: 9.4 MB). Free memory was 28.0 MB in the beginning and 11.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:11,949 INFO L168 Benchmark]: TraceAbstraction took 21576.05 ms. Allocated memory was 57.1 MB in the beginning and 158.3 MB in the end (delta: 101.2 MB). Free memory was 10.7 MB in the beginning and 61.8 MB in the end (delta: -51.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:11,949 INFO L168 Benchmark]: Witness Printer took 5.29 ms. Allocated memory is still 158.3 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:27:11,952 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.80 ms. Allocated memory is still 33.0 MB. Free memory was 12.1 MB in the beginning and 12.0 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 837.36 ms. Allocated memory was 44.6 MB in the beginning and 46.7 MB in the end (delta: 2.1 MB). Free memory was 22.3 MB in the beginning and 19.9 MB in the end (delta: 2.5 MB). Peak memory consumption was 14.4 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 96.05 ms. Allocated memory is still 46.7 MB. Free memory was 19.9 MB in the beginning and 15.0 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 132.32 ms. Allocated memory is still 46.7 MB. Free memory was 15.0 MB in the beginning and 7.9 MB in the end (delta: 7.1 MB). Peak memory consumption was 7.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1377.87 ms. Allocated memory was 47.7 MB in the beginning and 57.1 MB in the end (delta: 9.4 MB). Free memory was 28.0 MB in the beginning and 11.2 MB in the end (delta: 16.8 MB). Peak memory consumption was 26.8 MB. Max. memory is 14.3 GB. * TraceAbstraction took 21576.05 ms. Allocated memory was 57.1 MB in the beginning and 158.3 MB in the end (delta: 101.2 MB). Free memory was 10.7 MB in the beginning and 61.8 MB in the end (delta: -51.1 MB). Peak memory consumption was 50.1 MB. Max. memory is 14.3 GB. * Witness Printer took 5.29 ms. Allocated memory is still 158.3 MB. Free memory is still 61.8 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() 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={6:0}] [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={6:0}] [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={6:0}] [L1131] EXPR s->cert VAL [init=1, SSLv3_server_data={6:0}] [L1131] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [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={6:0}] [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={6:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [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={6:0}] [L1344] COND FALSE !(ret <= 0) [L1349] s->hit VAL [init=1, SSLv3_server_data={6:0}] [L1349] COND TRUE s->hit [L1350] s->state = 8656 VAL [init=1, SSLv3_server_data={6:0}] [L1354] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [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={6:0}] [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={6:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1230] COND FALSE !(s->state == 8656) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1233] COND FALSE !(s->state == 8657) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1236] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={6:0}] [L1589] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.01.i.cil-2.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 21.3s, OverallIterations: 42, TraceHistogramMax: 4, AutomataDifference: 16.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8012 SDtfs, 2270 SDslu, 11389 SDs, 0 SdLazy, 6913 SolverSat, 350 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 12.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 228 GetRequests, 82 SyntacticMatches, 29 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=510occurred in iteration=40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 41 MinimizatonAttempts, 933 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.8s InterpolantComputationTime, 3646 NumberOfCodeBlocks, 3646 NumberOfCodeBlocksAsserted, 42 NumberOfCheckSat, 3479 ConstructedInterpolants, 0 QuantifiedInterpolants, 795476 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 Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:27:14,178 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-10-19 22:27:14,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:27:14,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:27:14,260 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:27:14,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:27:14,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:27:14,262 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:27:14,263 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:27:14,263 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:27:14,263 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:27:14,264 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:27:14,265 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:27:14,266 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:27:14,291 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:27:14,291 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:27:14,293 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:27:14,293 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:27:14,293 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:27:14,294 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:27:14,294 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:27:14,294 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:27:14,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:27:14,295 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:27:14,295 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:27:14,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:27:14,295 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:27:14,296 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:27:14,296 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:27:14,296 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:27:14,296 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:27:14,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:27:14,297 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:27:14,297 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:27:14,297 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:27:14,298 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:27:14,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:14,298 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:27:14,298 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:27:14,299 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:27:14,299 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:27:14,299 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:27:14,299 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:27:14,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:27:14,300 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:27:14,300 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 [2020-10-19 22:27:14,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:27:14,544 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:27:14,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:27:14,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:27:14,550 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:27:14,551 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-10-19 22:27:14,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6daa3bc1/4373bf35df8a4593aa8d179ac176fb45/FLAG9af279c60 [2020-10-19 22:27:15,332 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:27:15,333 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.01.i.cil-2.c [2020-10-19 22:27:15,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6daa3bc1/4373bf35df8a4593aa8d179ac176fb45/FLAG9af279c60 [2020-10-19 22:27:15,547 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6daa3bc1/4373bf35df8a4593aa8d179ac176fb45 [2020-10-19 22:27:15,553 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:27:15,561 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:27:15,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:15,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:27:15,574 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:27:15,575 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:15" (1/1) ... [2020-10-19 22:27:15,580 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63522197 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:15, skipping insertion in model container [2020-10-19 22:27:15,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:15" (1/1) ... [2020-10-19 22:27:15,591 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:27:15,682 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:27:16,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:16,199 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:27:16,407 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:16,440 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:27:16,440 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16 WrapperNode [2020-10-19 22:27:16,440 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:16,442 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:16,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:27:16,445 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:27:16,455 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,513 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,572 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:16,572 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:27:16,572 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:27:16,573 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:27:16,584 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,592 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,593 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,636 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,648 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,655 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... [2020-10-19 22:27:16,669 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:27:16,670 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:27:16,670 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:27:16,671 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:27:16,672 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:16,769 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:27:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:27:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:27:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 22:27:16,770 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:27:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:27:16,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:27:16,771 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:27:16,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 22:27:16,996 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:27:20,279 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:27:20,280 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:27:20,308 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:27:20,308 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:27:20,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:20 BoogieIcfgContainer [2020-10-19 22:27:20,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:27:20,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:27:20,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:27:20,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:27:20,321 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:27:15" (1/3) ... [2020-10-19 22:27:20,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aad1009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:20, skipping insertion in model container [2020-10-19 22:27:20,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:16" (2/3) ... [2020-10-19 22:27:20,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aad1009 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:20, skipping insertion in model container [2020-10-19 22:27:20,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:20" (3/3) ... [2020-10-19 22:27:20,330 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.01.i.cil-2.c [2020-10-19 22:27:20,343 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:27:20,356 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:27:20,374 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:27:20,418 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:27:20,419 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:27:20,419 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:27:20,419 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:27:20,420 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:27:20,420 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:27:20,420 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:27:20,420 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:27:20,448 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states. [2020-10-19 22:27:20,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:27:20,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:20,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:20,465 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:20,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:20,472 INFO L82 PathProgramCache]: Analyzing trace with hash 522834703, now seen corresponding path program 1 times [2020-10-19 22:27:20,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:20,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [646426417] [2020-10-19 22:27:20,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:20,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:20,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:20,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:20,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:20,902 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:20,904 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [646426417] [2020-10-19 22:27:20,905 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:20,906 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:20,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466494929] [2020-10-19 22:27:20,917 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:20,919 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:20,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:20,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:20,937 INFO L87 Difference]: Start difference. First operand 146 states. Second operand 4 states. [2020-10-19 22:27:21,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:21,107 INFO L93 Difference]: Finished difference Result 550 states and 926 transitions. [2020-10-19 22:27:21,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:21,108 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:27:21,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:21,124 INFO L225 Difference]: With dead ends: 550 [2020-10-19 22:27:21,125 INFO L226 Difference]: Without dead ends: 373 [2020-10-19 22:27:21,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:21,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 373 states. [2020-10-19 22:27:21,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 373 to 371. [2020-10-19 22:27:21,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 371 states. [2020-10-19 22:27:21,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 562 transitions. [2020-10-19 22:27:21,204 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 562 transitions. Word has length 45 [2020-10-19 22:27:21,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:21,205 INFO L481 AbstractCegarLoop]: Abstraction has 371 states and 562 transitions. [2020-10-19 22:27:21,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:21,205 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 562 transitions. [2020-10-19 22:27:21,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 22:27:21,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:21,209 INFO L422 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] [2020-10-19 22:27:21,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:27:21,423 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:21,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:21,423 INFO L82 PathProgramCache]: Analyzing trace with hash -60762572, now seen corresponding path program 1 times [2020-10-19 22:27:21,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:21,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2064975052] [2020-10-19 22:27:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:21,603 INFO L263 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:21,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:21,650 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:21,651 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:21,690 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:21,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2064975052] [2020-10-19 22:27:21,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:21,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:21,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823539298] [2020-10-19 22:27:21,695 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:21,695 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:21,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:21,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:21,696 INFO L87 Difference]: Start difference. First operand 371 states and 562 transitions. Second operand 4 states. [2020-10-19 22:27:22,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:22,399 INFO L93 Difference]: Finished difference Result 853 states and 1299 transitions. [2020-10-19 22:27:22,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:22,400 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 63 [2020-10-19 22:27:22,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:22,405 INFO L225 Difference]: With dead ends: 853 [2020-10-19 22:27:22,405 INFO L226 Difference]: Without dead ends: 611 [2020-10-19 22:27:22,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 122 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:22,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-19 22:27:22,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 609. [2020-10-19 22:27:22,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 609 states. [2020-10-19 22:27:22,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 609 states to 609 states and 922 transitions. [2020-10-19 22:27:22,479 INFO L78 Accepts]: Start accepts. Automaton has 609 states and 922 transitions. Word has length 63 [2020-10-19 22:27:22,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:22,480 INFO L481 AbstractCegarLoop]: Abstraction has 609 states and 922 transitions. [2020-10-19 22:27:22,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:22,480 INFO L276 IsEmpty]: Start isEmpty. Operand 609 states and 922 transitions. [2020-10-19 22:27:22,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-19 22:27:22,488 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:22,488 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:22,705 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:27:22,705 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:22,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:22,706 INFO L82 PathProgramCache]: Analyzing trace with hash -2005677060, now seen corresponding path program 1 times [2020-10-19 22:27:22,707 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:22,707 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [949583170] [2020-10-19 22:27:22,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:22,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:22,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:22,957 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:23,010 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:23,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:23,061 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 90 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:23,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [949583170] [2020-10-19 22:27:23,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:23,063 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:23,063 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421032498] [2020-10-19 22:27:23,064 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:23,064 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:23,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:23,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:23,065 INFO L87 Difference]: Start difference. First operand 609 states and 922 transitions. Second operand 4 states. [2020-10-19 22:27:23,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:23,462 INFO L93 Difference]: Finished difference Result 1091 states and 1654 transitions. [2020-10-19 22:27:23,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:23,462 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 123 [2020-10-19 22:27:23,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:23,467 INFO L225 Difference]: With dead ends: 1091 [2020-10-19 22:27:23,467 INFO L226 Difference]: Without dead ends: 611 [2020-10-19 22:27:23,469 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 244 GetRequests, 242 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:23,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 611 states. [2020-10-19 22:27:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 611 to 611. [2020-10-19 22:27:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 611 states. [2020-10-19 22:27:23,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 611 states to 611 states and 918 transitions. [2020-10-19 22:27:23,501 INFO L78 Accepts]: Start accepts. Automaton has 611 states and 918 transitions. Word has length 123 [2020-10-19 22:27:23,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:23,502 INFO L481 AbstractCegarLoop]: Abstraction has 611 states and 918 transitions. [2020-10-19 22:27:23,502 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:23,502 INFO L276 IsEmpty]: Start isEmpty. Operand 611 states and 918 transitions. [2020-10-19 22:27:23,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2020-10-19 22:27:23,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:23,507 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:23,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:27:23,721 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:23,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:23,721 INFO L82 PathProgramCache]: Analyzing trace with hash -877709346, now seen corresponding path program 1 times [2020-10-19 22:27:23,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:23,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [34520654] [2020-10-19 22:27:23,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:24,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:24,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:24,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:24,553 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:24,961 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:27:24,962 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:25,176 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:27:25,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:25 BoogieIcfgContainer [2020-10-19 22:27:25,356 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:25,356 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:25,357 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:25,357 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:25,358 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:20" (3/4) ... [2020-10-19 22:27:25,360 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:27:25,502 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:27:25,503 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:25,505 INFO L168 Benchmark]: Toolchain (without parser) took 9950.02 ms. Allocated memory was 40.9 MB in the beginning and 88.1 MB in the end (delta: 47.2 MB). Free memory was 17.4 MB in the beginning and 38.7 MB in the end (delta: -21.3 MB). Peak memory consumption was 25.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,506 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 8.2 MB in the beginning and 8.1 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,506 INFO L168 Benchmark]: CACSL2BoogieTranslator took 872.64 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 16.5 MB in the beginning and 21.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,507 INFO L168 Benchmark]: Boogie Procedure Inliner took 129.65 ms. Allocated memory is still 43.0 MB. Free memory was 21.1 MB in the beginning and 16.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,507 INFO L168 Benchmark]: Boogie Preprocessor took 97.22 ms. Allocated memory is still 43.0 MB. Free memory was 16.4 MB in the beginning and 9.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,508 INFO L168 Benchmark]: RCFGBuilder took 3644.32 ms. Allocated memory was 43.0 MB in the beginning and 53.0 MB in the end (delta: 10.0 MB). Free memory was 9.0 MB in the beginning and 17.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,508 INFO L168 Benchmark]: TraceAbstraction took 5039.81 ms. Allocated memory was 53.0 MB in the beginning and 88.1 MB in the end (delta: 35.1 MB). Free memory was 16.8 MB in the beginning and 57.9 MB in the end (delta: -41.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,508 INFO L168 Benchmark]: Witness Printer took 146.31 ms. Allocated memory is still 88.1 MB. Free memory was 57.9 MB in the beginning and 38.7 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:25,511 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 30.9 MB. Free memory was 8.2 MB in the beginning and 8.1 MB in the end (delta: 45.8 kB). Peak memory consumption was 45.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 872.64 ms. Allocated memory was 40.9 MB in the beginning and 43.0 MB in the end (delta: 2.1 MB). Free memory was 16.5 MB in the beginning and 21.1 MB in the end (delta: -4.6 MB). Peak memory consumption was 11.2 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 129.65 ms. Allocated memory is still 43.0 MB. Free memory was 21.1 MB in the beginning and 16.4 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 97.22 ms. Allocated memory is still 43.0 MB. Free memory was 16.4 MB in the beginning and 9.0 MB in the end (delta: 7.4 MB). Peak memory consumption was 7.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3644.32 ms. Allocated memory was 43.0 MB in the beginning and 53.0 MB in the end (delta: 10.0 MB). Free memory was 9.0 MB in the beginning and 17.7 MB in the end (delta: -8.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 5039.81 ms. Allocated memory was 53.0 MB in the beginning and 88.1 MB in the end (delta: 35.1 MB). Free memory was 16.8 MB in the beginning and 57.9 MB in the end (delta: -41.0 MB). Peak memory consumption was 27.1 MB. Max. memory is 14.3 GB. * Witness Printer took 146.31 ms. Allocated memory is still 88.1 MB. Free memory was 57.9 MB in the beginning and 38.7 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-2147483617:0}] [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={-2147483617:0}] [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={-2147483617:0}] [L1131] EXPR s->cert VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1131] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [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={-2147483617:0}] [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={-2147483617:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [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={-2147483617:0}] [L1344] COND FALSE !(ret <= 0) [L1349] s->hit VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1349] COND TRUE s->hit [L1350] s->state = 8656 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1354] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [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={-2147483617:0}] [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={-2147483617:0}] [L1667] EXPR s->s3 [L1667] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1667] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1696] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1137] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1139] EXPR s->state [L1139] state = s->state [L1140] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] COND FALSE !(s->state == 12292) [L1143] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1143] COND FALSE !(s->state == 16384) [L1146] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1146] COND FALSE !(s->state == 8192) [L1149] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1149] COND FALSE !(s->state == 24576) [L1152] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1152] COND FALSE !(s->state == 8195) [L1155] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1155] COND FALSE !(s->state == 8480) [L1158] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1158] COND FALSE !(s->state == 8481) [L1161] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1161] COND FALSE !(s->state == 8482) [L1164] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1164] COND FALSE !(s->state == 8464) [L1167] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1167] COND FALSE !(s->state == 8465) [L1170] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1170] COND FALSE !(s->state == 8466) [L1173] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1173] COND FALSE !(s->state == 8496) [L1176] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1176] COND FALSE !(s->state == 8497) [L1179] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1179] COND FALSE !(s->state == 8512) [L1182] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1182] COND FALSE !(s->state == 8513) [L1185] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1185] COND FALSE !(s->state == 8528) [L1188] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1188] COND FALSE !(s->state == 8529) [L1191] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1191] COND FALSE !(s->state == 8544) [L1194] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1194] COND FALSE !(s->state == 8545) [L1197] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1197] COND FALSE !(s->state == 8560) [L1200] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1200] COND FALSE !(s->state == 8561) [L1203] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1203] COND FALSE !(s->state == 8448) [L1206] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1206] COND FALSE !(s->state == 8576) [L1209] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1209] COND FALSE !(s->state == 8577) [L1212] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1212] COND FALSE !(s->state == 8592) [L1215] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1215] COND FALSE !(s->state == 8593) [L1218] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1218] COND FALSE !(s->state == 8608) [L1221] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1221] COND FALSE !(s->state == 8609) [L1224] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1224] COND FALSE !(s->state == 8640) [L1227] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1227] COND FALSE !(s->state == 8641) [L1230] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1230] COND FALSE !(s->state == 8656) [L1233] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1233] COND FALSE !(s->state == 8657) [L1236] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1236] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND FALSE !(blastFlag == 4) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1589] COND TRUE blastFlag == 5 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.01.i.cil-2.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 146 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.7s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 951 SDtfs, 1145 SDslu, 977 SDs, 0 SdLazy, 86 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 456 GetRequests, 450 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=611occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 456 ConstructedInterpolants, 0 QuantifiedInterpolants, 120522 SizeOfPredicates, 2 NumberOfNonLiveVariables, 659 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! Received shutdown request...