./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.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.11.i.cil-1.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 70c3bc063fdec0bf22217db797a4f26edc24e29e .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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.11.i.cil-1.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 70c3bc063fdec0bf22217db797a4f26edc24e29e ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ 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 22:27:58,992 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:27:58,995 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:27:59,020 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:27:59,020 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:27:59,022 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:27:59,023 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:27:59,025 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:27:59,036 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:27:59,037 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:27:59,038 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:27:59,039 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:27:59,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:27:59,041 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:27:59,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:27:59,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:27:59,043 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:27:59,044 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:27:59,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:27:59,048 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:27:59,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:27:59,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:27:59,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:27:59,052 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:27:59,055 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:27:59,055 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:27:59,055 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:27:59,056 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:27:59,057 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:27:59,058 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:27:59,058 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:27:59,059 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:27:59,060 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:27:59,060 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:27:59,061 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:27:59,062 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:27:59,062 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:27:59,063 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:27:59,063 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:27:59,064 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:27:59,065 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:27:59,065 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:27:59,089 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:27:59,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:27:59,091 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:27:59,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:27:59,092 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:27:59,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:27:59,092 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:27:59,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:27:59,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:27:59,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:27:59,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:27:59,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:27:59,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:27:59,094 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:27:59,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:27:59,095 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:27:59,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:27:59,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:27:59,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:27:59,096 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:27:59,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:27:59,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:59,097 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:27:59,097 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:27:59,097 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:27:59,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:27:59,098 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:27:59,098 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:27:59,098 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:27:59,098 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 -> 70c3bc063fdec0bf22217db797a4f26edc24e29e [2020-10-19 22:27:59,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:27:59,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:27:59,383 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:27:59,389 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:27:59,391 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:27:59,392 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-10-19 22:27:59,474 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d998f452c/d3dc2bc0549b40278e1581173b5b2c36/FLAG297e5c5a4 [2020-10-19 22:28:00,117 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:28:00,119 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-10-19 22:28:00,150 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d998f452c/d3dc2bc0549b40278e1581173b5b2c36/FLAG297e5c5a4 [2020-10-19 22:28:00,302 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d998f452c/d3dc2bc0549b40278e1581173b5b2c36 [2020-10-19 22:28:00,306 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:28:00,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:28:00,315 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:28:00,315 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:28:00,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:28:00,320 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:28:00" (1/1) ... [2020-10-19 22:28:00,322 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e45cc6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:00, skipping insertion in model container [2020-10-19 22:28:00,323 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:28:00" (1/1) ... [2020-10-19 22:28:00,331 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:28:00,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:28:00,897 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:28:00,917 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:28:01,137 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:28:01,170 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:28:01,170 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01 WrapperNode [2020-10-19 22:28:01,171 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:28:01,171 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:28:01,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:28:01,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:28:01,181 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,208 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,287 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:28:01,288 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:28:01,288 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:28:01,288 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:28:01,300 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,330 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,330 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,413 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,431 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (1/1) ... [2020-10-19 22:28:01,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:28:01,453 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:28:01,453 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:28:01,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:28:01,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (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 22:28:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:28:01,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:28:01,549 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:28:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:28:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:28:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:28:01,550 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:28:01,551 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:28:01,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:28:01,810 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:28:02,748 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:28:02,749 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:28:02,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:28:02,761 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:28:02,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:28:02 BoogieIcfgContainer [2020-10-19 22:28:02,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:28:02,765 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:28:02,765 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:28:02,768 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:28:02,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:28:00" (1/3) ... [2020-10-19 22:28:02,769 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd17297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:28:02, skipping insertion in model container [2020-10-19 22:28:02,769 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:01" (2/3) ... [2020-10-19 22:28:02,770 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cd17297 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:28:02, skipping insertion in model container [2020-10-19 22:28:02,770 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:28:02" (3/3) ... [2020-10-19 22:28:02,772 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2020-10-19 22:28:02,785 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:28:02,793 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:28:02,809 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:28:02,838 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:28:02,838 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:28:02,838 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:28:02,838 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:28:02,839 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:28:02,839 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:28:02,839 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:28:02,839 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:28:02,861 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-10-19 22:28:02,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 22:28:02,871 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:02,872 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] [2020-10-19 22:28:02,873 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:02,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:02,879 INFO L82 PathProgramCache]: Analyzing trace with hash -2031756972, now seen corresponding path program 1 times [2020-10-19 22:28:02,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:02,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595858990] [2020-10-19 22:28:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:03,289 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 22:28:03,290 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595858990] [2020-10-19 22:28:03,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:03,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:03,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096754940] [2020-10-19 22:28:03,302 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:03,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:03,321 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:03,322 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:03,325 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2020-10-19 22:28:04,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:04,036 INFO L93 Difference]: Finished difference Result 324 states and 548 transitions. [2020-10-19 22:28:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:04,038 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 22:28:04,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:04,053 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:28:04,054 INFO L226 Difference]: Without dead ends: 163 [2020-10-19 22:28:04,059 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 22:28:04,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-19 22:28:04,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2020-10-19 22:28:04,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:04,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 226 transitions. [2020-10-19 22:28:04,111 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 226 transitions. Word has length 35 [2020-10-19 22:28:04,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:04,112 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 226 transitions. [2020-10-19 22:28:04,112 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:04,112 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 226 transitions. [2020-10-19 22:28:04,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-19 22:28:04,114 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:04,114 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] [2020-10-19 22:28:04,115 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:28:04,115 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:04,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:04,116 INFO L82 PathProgramCache]: Analyzing trace with hash 2027967358, now seen corresponding path program 1 times [2020-10-19 22:28:04,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:04,116 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888320809] [2020-10-19 22:28:04,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:04,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:04,227 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 22:28:04,228 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888320809] [2020-10-19 22:28:04,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:04,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:04,229 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35339420] [2020-10-19 22:28:04,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:04,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:04,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:04,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:04,232 INFO L87 Difference]: Start difference. First operand 146 states and 226 transitions. Second operand 4 states. [2020-10-19 22:28:04,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:04,683 INFO L93 Difference]: Finished difference Result 290 states and 443 transitions. [2020-10-19 22:28:04,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:04,684 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 48 [2020-10-19 22:28:04,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:04,686 INFO L225 Difference]: With dead ends: 290 [2020-10-19 22:28:04,686 INFO L226 Difference]: Without dead ends: 163 [2020-10-19 22:28:04,688 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 22:28:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-19 22:28:04,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 146. [2020-10-19 22:28:04,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:04,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 225 transitions. [2020-10-19 22:28:04,702 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 225 transitions. Word has length 48 [2020-10-19 22:28:04,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:04,703 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 225 transitions. [2020-10-19 22:28:04,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:04,703 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 225 transitions. [2020-10-19 22:28:04,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 22:28:04,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:04,706 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] [2020-10-19 22:28:04,706 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:28:04,707 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:04,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:04,707 INFO L82 PathProgramCache]: Analyzing trace with hash -1944321008, now seen corresponding path program 1 times [2020-10-19 22:28:04,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:04,708 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629468472] [2020-10-19 22:28:04,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:04,834 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 22:28:04,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629468472] [2020-10-19 22:28:04,835 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:04,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:04,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881531740] [2020-10-19 22:28:04,836 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:04,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:04,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:04,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:04,837 INFO L87 Difference]: Start difference. First operand 146 states and 225 transitions. Second operand 4 states. [2020-10-19 22:28:05,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:05,258 INFO L93 Difference]: Finished difference Result 289 states and 441 transitions. [2020-10-19 22:28:05,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:05,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-19 22:28:05,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:05,261 INFO L225 Difference]: With dead ends: 289 [2020-10-19 22:28:05,261 INFO L226 Difference]: Without dead ends: 162 [2020-10-19 22:28:05,262 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 22:28:05,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-19 22:28:05,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 146. [2020-10-19 22:28:05,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:05,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 224 transitions. [2020-10-19 22:28:05,274 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 224 transitions. Word has length 49 [2020-10-19 22:28:05,274 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:05,275 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 224 transitions. [2020-10-19 22:28:05,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:05,275 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 224 transitions. [2020-10-19 22:28:05,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 22:28:05,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:05,277 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] [2020-10-19 22:28:05,277 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:28:05,278 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:05,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:05,278 INFO L82 PathProgramCache]: Analyzing trace with hash -2008072389, now seen corresponding path program 1 times [2020-10-19 22:28:05,279 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:05,279 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393714856] [2020-10-19 22:28:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:05,395 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 22:28:05,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393714856] [2020-10-19 22:28:05,396 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:05,396 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:05,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1024538836] [2020-10-19 22:28:05,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:05,397 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:05,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:05,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:05,398 INFO L87 Difference]: Start difference. First operand 146 states and 224 transitions. Second operand 4 states. [2020-10-19 22:28:05,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:05,805 INFO L93 Difference]: Finished difference Result 287 states and 438 transitions. [2020-10-19 22:28:05,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:05,805 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-19 22:28:05,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:05,807 INFO L225 Difference]: With dead ends: 287 [2020-10-19 22:28:05,807 INFO L226 Difference]: Without dead ends: 160 [2020-10-19 22:28:05,808 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 22:28:05,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-19 22:28:05,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 146. [2020-10-19 22:28:05,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:05,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 223 transitions. [2020-10-19 22:28:05,817 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 223 transitions. Word has length 49 [2020-10-19 22:28:05,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:05,818 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 223 transitions. [2020-10-19 22:28:05,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:05,818 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 223 transitions. [2020-10-19 22:28:05,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 22:28:05,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:05,820 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] [2020-10-19 22:28:05,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:28:05,820 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:05,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:05,820 INFO L82 PathProgramCache]: Analyzing trace with hash -1467926917, now seen corresponding path program 1 times [2020-10-19 22:28:05,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:05,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583819518] [2020-10-19 22:28:05,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:05,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:05,909 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 22:28:05,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583819518] [2020-10-19 22:28:05,910 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:05,910 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:05,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [436820475] [2020-10-19 22:28:05,911 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:05,911 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:05,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:05,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:05,912 INFO L87 Difference]: Start difference. First operand 146 states and 223 transitions. Second operand 4 states. [2020-10-19 22:28:06,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:06,264 INFO L93 Difference]: Finished difference Result 286 states and 436 transitions. [2020-10-19 22:28:06,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:06,266 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-19 22:28:06,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:06,269 INFO L225 Difference]: With dead ends: 286 [2020-10-19 22:28:06,269 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 22:28:06,270 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 22:28:06,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 22:28:06,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-10-19 22:28:06,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:06,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 222 transitions. [2020-10-19 22:28:06,286 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 222 transitions. Word has length 49 [2020-10-19 22:28:06,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:06,287 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 222 transitions. [2020-10-19 22:28:06,287 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:06,288 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 222 transitions. [2020-10-19 22:28:06,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 22:28:06,289 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:06,289 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] [2020-10-19 22:28:06,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:28:06,293 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:06,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:06,293 INFO L82 PathProgramCache]: Analyzing trace with hash -1078741852, now seen corresponding path program 1 times [2020-10-19 22:28:06,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:06,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169703792] [2020-10-19 22:28:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:06,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:06,431 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 22:28:06,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169703792] [2020-10-19 22:28:06,433 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:06,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:06,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430899772] [2020-10-19 22:28:06,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:06,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:06,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:06,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:06,438 INFO L87 Difference]: Start difference. First operand 146 states and 222 transitions. Second operand 4 states. [2020-10-19 22:28:06,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:06,809 INFO L93 Difference]: Finished difference Result 286 states and 435 transitions. [2020-10-19 22:28:06,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:06,810 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-10-19 22:28:06,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:06,811 INFO L225 Difference]: With dead ends: 286 [2020-10-19 22:28:06,811 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 22:28:06,812 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 22:28:06,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 22:28:06,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-10-19 22:28:06,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:06,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 221 transitions. [2020-10-19 22:28:06,831 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 221 transitions. Word has length 49 [2020-10-19 22:28:06,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:06,831 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 221 transitions. [2020-10-19 22:28:06,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:06,832 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 221 transitions. [2020-10-19 22:28:06,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-19 22:28:06,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:06,835 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] [2020-10-19 22:28:06,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:28:06,836 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:06,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:06,836 INFO L82 PathProgramCache]: Analyzing trace with hash 231094087, now seen corresponding path program 1 times [2020-10-19 22:28:06,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:06,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030809918] [2020-10-19 22:28:06,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:06,953 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 22:28:06,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030809918] [2020-10-19 22:28:06,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:06,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:06,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [716586321] [2020-10-19 22:28:06,956 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:06,958 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:06,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:06,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:06,959 INFO L87 Difference]: Start difference. First operand 146 states and 221 transitions. Second operand 4 states. [2020-10-19 22:28:07,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:07,312 INFO L93 Difference]: Finished difference Result 286 states and 434 transitions. [2020-10-19 22:28:07,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:07,312 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-19 22:28:07,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:07,313 INFO L225 Difference]: With dead ends: 286 [2020-10-19 22:28:07,313 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 22:28:07,315 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 22:28:07,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 22:28:07,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-10-19 22:28:07,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:07,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 220 transitions. [2020-10-19 22:28:07,321 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 220 transitions. Word has length 50 [2020-10-19 22:28:07,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:07,321 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 220 transitions. [2020-10-19 22:28:07,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:07,322 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 220 transitions. [2020-10-19 22:28:07,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:28:07,322 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:07,322 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] [2020-10-19 22:28:07,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:28:07,323 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:07,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:07,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1862851913, now seen corresponding path program 1 times [2020-10-19 22:28:07,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:07,324 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1978525802] [2020-10-19 22:28:07,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:07,371 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 22:28:07,371 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1978525802] [2020-10-19 22:28:07,371 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:07,371 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:07,372 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540967058] [2020-10-19 22:28:07,372 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:07,372 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:07,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:07,373 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:07,373 INFO L87 Difference]: Start difference. First operand 146 states and 220 transitions. Second operand 4 states. [2020-10-19 22:28:07,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:07,743 INFO L93 Difference]: Finished difference Result 286 states and 433 transitions. [2020-10-19 22:28:07,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:07,745 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-10-19 22:28:07,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:07,746 INFO L225 Difference]: With dead ends: 286 [2020-10-19 22:28:07,746 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 22:28:07,747 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 22:28:07,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 22:28:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 146. [2020-10-19 22:28:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 219 transitions. [2020-10-19 22:28:07,753 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 219 transitions. Word has length 51 [2020-10-19 22:28:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:07,754 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 219 transitions. [2020-10-19 22:28:07,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 219 transitions. [2020-10-19 22:28:07,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 22:28:07,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:07,755 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] [2020-10-19 22:28:07,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:28:07,756 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:07,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:07,756 INFO L82 PathProgramCache]: Analyzing trace with hash 589286348, now seen corresponding path program 1 times [2020-10-19 22:28:07,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:07,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573745944] [2020-10-19 22:28:07,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:07,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:07,815 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 22:28:07,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573745944] [2020-10-19 22:28:07,816 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:07,816 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:07,816 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904097355] [2020-10-19 22:28:07,817 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:07,817 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:07,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:07,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:07,818 INFO L87 Difference]: Start difference. First operand 146 states and 219 transitions. Second operand 4 states. [2020-10-19 22:28:08,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:08,134 INFO L93 Difference]: Finished difference Result 276 states and 419 transitions. [2020-10-19 22:28:08,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:08,135 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-19 22:28:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:08,136 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:28:08,136 INFO L226 Difference]: Without dead ends: 149 [2020-10-19 22:28:08,137 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 22:28:08,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-19 22:28:08,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 146. [2020-10-19 22:28:08,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-19 22:28:08,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 218 transitions. [2020-10-19 22:28:08,146 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 218 transitions. Word has length 52 [2020-10-19 22:28:08,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:08,146 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 218 transitions. [2020-10-19 22:28:08,147 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:08,147 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 218 transitions. [2020-10-19 22:28:08,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 22:28:08,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:08,148 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] [2020-10-19 22:28:08,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:28:08,150 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:08,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:08,151 INFO L82 PathProgramCache]: Analyzing trace with hash -350273228, now seen corresponding path program 1 times [2020-10-19 22:28:08,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:08,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44062999] [2020-10-19 22:28:08,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:08,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:08,205 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 22:28:08,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44062999] [2020-10-19 22:28:08,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:08,206 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:08,206 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522680553] [2020-10-19 22:28:08,207 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:08,207 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:08,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:08,208 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:08,208 INFO L87 Difference]: Start difference. First operand 146 states and 218 transitions. Second operand 4 states. [2020-10-19 22:28:08,566 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:08,567 INFO L93 Difference]: Finished difference Result 316 states and 480 transitions. [2020-10-19 22:28:08,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:08,567 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-10-19 22:28:08,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:08,569 INFO L225 Difference]: With dead ends: 316 [2020-10-19 22:28:08,569 INFO L226 Difference]: Without dead ends: 189 [2020-10-19 22:28:08,570 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 22:28:08,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-19 22:28:08,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2020-10-19 22:28:08,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:08,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 256 transitions. [2020-10-19 22:28:08,577 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 256 transitions. Word has length 52 [2020-10-19 22:28:08,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:08,577 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 256 transitions. [2020-10-19 22:28:08,577 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:08,578 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 256 transitions. [2020-10-19 22:28:08,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-19 22:28:08,578 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:08,579 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] [2020-10-19 22:28:08,579 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:28:08,579 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:08,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:08,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1467398046, now seen corresponding path program 1 times [2020-10-19 22:28:08,580 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:08,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701879825] [2020-10-19 22:28:08,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:08,638 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 22:28:08,639 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701879825] [2020-10-19 22:28:08,639 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:08,639 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:08,640 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573273415] [2020-10-19 22:28:08,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:08,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:08,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:08,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:08,641 INFO L87 Difference]: Start difference. First operand 168 states and 256 transitions. Second operand 4 states. [2020-10-19 22:28:09,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:09,009 INFO L93 Difference]: Finished difference Result 338 states and 517 transitions. [2020-10-19 22:28:09,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:09,009 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 65 [2020-10-19 22:28:09,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:09,011 INFO L225 Difference]: With dead ends: 338 [2020-10-19 22:28:09,012 INFO L226 Difference]: Without dead ends: 189 [2020-10-19 22:28:09,013 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 22:28:09,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-19 22:28:09,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 168. [2020-10-19 22:28:09,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:09,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 255 transitions. [2020-10-19 22:28:09,019 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 255 transitions. Word has length 65 [2020-10-19 22:28:09,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:09,019 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 255 transitions. [2020-10-19 22:28:09,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:09,019 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 255 transitions. [2020-10-19 22:28:09,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-19 22:28:09,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:09,020 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] [2020-10-19 22:28:09,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:28:09,021 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:09,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:09,021 INFO L82 PathProgramCache]: Analyzing trace with hash -2142100496, now seen corresponding path program 1 times [2020-10-19 22:28:09,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:09,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983853008] [2020-10-19 22:28:09,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:09,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:09,078 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 22:28:09,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983853008] [2020-10-19 22:28:09,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:09,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:09,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257513301] [2020-10-19 22:28:09,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:09,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:09,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:09,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:09,080 INFO L87 Difference]: Start difference. First operand 168 states and 255 transitions. Second operand 4 states. [2020-10-19 22:28:09,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:09,431 INFO L93 Difference]: Finished difference Result 337 states and 514 transitions. [2020-10-19 22:28:09,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:09,432 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-19 22:28:09,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:09,434 INFO L225 Difference]: With dead ends: 337 [2020-10-19 22:28:09,434 INFO L226 Difference]: Without dead ends: 188 [2020-10-19 22:28:09,436 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 22:28:09,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-19 22:28:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 168. [2020-10-19 22:28:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:09,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 254 transitions. [2020-10-19 22:28:09,445 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 254 transitions. Word has length 66 [2020-10-19 22:28:09,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:09,446 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 254 transitions. [2020-10-19 22:28:09,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:09,446 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 254 transitions. [2020-10-19 22:28:09,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-19 22:28:09,450 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:09,451 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] [2020-10-19 22:28:09,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:28:09,451 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:09,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:09,452 INFO L82 PathProgramCache]: Analyzing trace with hash 2089115419, now seen corresponding path program 1 times [2020-10-19 22:28:09,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:09,453 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396358078] [2020-10-19 22:28:09,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:09,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:09,527 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 22:28:09,528 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396358078] [2020-10-19 22:28:09,528 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:09,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:09,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185012127] [2020-10-19 22:28:09,532 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:09,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:09,533 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:09,534 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:09,534 INFO L87 Difference]: Start difference. First operand 168 states and 254 transitions. Second operand 4 states. [2020-10-19 22:28:09,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:09,886 INFO L93 Difference]: Finished difference Result 335 states and 510 transitions. [2020-10-19 22:28:09,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:09,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-19 22:28:09,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:09,888 INFO L225 Difference]: With dead ends: 335 [2020-10-19 22:28:09,889 INFO L226 Difference]: Without dead ends: 186 [2020-10-19 22:28:09,890 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 22:28:09,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-19 22:28:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 168. [2020-10-19 22:28:09,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:09,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 253 transitions. [2020-10-19 22:28:09,896 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 253 transitions. Word has length 66 [2020-10-19 22:28:09,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:09,896 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 253 transitions. [2020-10-19 22:28:09,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:09,897 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 253 transitions. [2020-10-19 22:28:09,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-19 22:28:09,897 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:09,898 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] [2020-10-19 22:28:09,898 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:28:09,898 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:09,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:09,899 INFO L82 PathProgramCache]: Analyzing trace with hash -1665706405, now seen corresponding path program 1 times [2020-10-19 22:28:09,899 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:09,899 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550218147] [2020-10-19 22:28:09,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:09,951 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 22:28:09,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550218147] [2020-10-19 22:28:09,952 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:09,952 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:09,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992931357] [2020-10-19 22:28:09,953 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:09,953 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:09,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:09,954 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:09,954 INFO L87 Difference]: Start difference. First operand 168 states and 253 transitions. Second operand 4 states. [2020-10-19 22:28:10,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:10,270 INFO L93 Difference]: Finished difference Result 334 states and 507 transitions. [2020-10-19 22:28:10,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:10,270 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-19 22:28:10,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:10,272 INFO L225 Difference]: With dead ends: 334 [2020-10-19 22:28:10,272 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:28:10,273 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 22:28:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:28:10,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-10-19 22:28:10,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:10,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 252 transitions. [2020-10-19 22:28:10,281 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 252 transitions. Word has length 66 [2020-10-19 22:28:10,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:10,282 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 252 transitions. [2020-10-19 22:28:10,282 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:10,282 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 252 transitions. [2020-10-19 22:28:10,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-19 22:28:10,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:10,284 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] [2020-10-19 22:28:10,284 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:28:10,285 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:10,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:10,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1276521340, now seen corresponding path program 1 times [2020-10-19 22:28:10,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:10,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795496838] [2020-10-19 22:28:10,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:10,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:10,340 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 22:28:10,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795496838] [2020-10-19 22:28:10,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:10,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:10,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314732125] [2020-10-19 22:28:10,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:10,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:10,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:10,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:10,344 INFO L87 Difference]: Start difference. First operand 168 states and 252 transitions. Second operand 4 states. [2020-10-19 22:28:10,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:10,808 INFO L93 Difference]: Finished difference Result 334 states and 505 transitions. [2020-10-19 22:28:10,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:10,809 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 66 [2020-10-19 22:28:10,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:10,810 INFO L225 Difference]: With dead ends: 334 [2020-10-19 22:28:10,810 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:28:10,811 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 22:28:10,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:28:10,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-10-19 22:28:10,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:10,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 251 transitions. [2020-10-19 22:28:10,817 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 251 transitions. Word has length 66 [2020-10-19 22:28:10,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:10,818 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 251 transitions. [2020-10-19 22:28:10,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:10,818 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 251 transitions. [2020-10-19 22:28:10,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-19 22:28:10,820 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:10,820 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] [2020-10-19 22:28:10,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:28:10,821 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash -1605102745, now seen corresponding path program 1 times [2020-10-19 22:28:10,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:10,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209391199] [2020-10-19 22:28:10,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:10,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:10,878 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 22:28:10,879 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209391199] [2020-10-19 22:28:10,879 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:10,879 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:10,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431426979] [2020-10-19 22:28:10,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:10,880 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:10,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:10,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:10,881 INFO L87 Difference]: Start difference. First operand 168 states and 251 transitions. Second operand 4 states. [2020-10-19 22:28:11,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:11,201 INFO L93 Difference]: Finished difference Result 334 states and 503 transitions. [2020-10-19 22:28:11,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:11,201 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 67 [2020-10-19 22:28:11,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:11,203 INFO L225 Difference]: With dead ends: 334 [2020-10-19 22:28:11,203 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:28:11,204 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 22:28:11,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:28:11,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-10-19 22:28:11,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:11,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 250 transitions. [2020-10-19 22:28:11,210 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 250 transitions. Word has length 67 [2020-10-19 22:28:11,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:11,211 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 250 transitions. [2020-10-19 22:28:11,211 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:11,211 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 250 transitions. [2020-10-19 22:28:11,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-19 22:28:11,212 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:11,212 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] [2020-10-19 22:28:11,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:28:11,213 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:11,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:11,213 INFO L82 PathProgramCache]: Analyzing trace with hash 775324969, now seen corresponding path program 1 times [2020-10-19 22:28:11,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:11,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564738122] [2020-10-19 22:28:11,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:11,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:11,254 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 22:28:11,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564738122] [2020-10-19 22:28:11,254 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:11,255 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:11,255 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999658175] [2020-10-19 22:28:11,255 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:11,255 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:11,256 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:11,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:11,256 INFO L87 Difference]: Start difference. First operand 168 states and 250 transitions. Second operand 4 states. [2020-10-19 22:28:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:11,767 INFO L93 Difference]: Finished difference Result 334 states and 501 transitions. [2020-10-19 22:28:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:11,769 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 68 [2020-10-19 22:28:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:11,771 INFO L225 Difference]: With dead ends: 334 [2020-10-19 22:28:11,772 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:28:11,773 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 22:28:11,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:28:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 168. [2020-10-19 22:28:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 249 transitions. [2020-10-19 22:28:11,781 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 249 transitions. Word has length 68 [2020-10-19 22:28:11,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:11,782 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 249 transitions. [2020-10-19 22:28:11,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:11,782 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 249 transitions. [2020-10-19 22:28:11,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-19 22:28:11,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:11,784 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] [2020-10-19 22:28:11,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:28:11,784 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:11,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:11,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1235689452, now seen corresponding path program 1 times [2020-10-19 22:28:11,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:11,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523663229] [2020-10-19 22:28:11,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:11,862 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 22:28:11,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1523663229] [2020-10-19 22:28:11,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:11,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:11,864 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913618074] [2020-10-19 22:28:11,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:11,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:11,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:11,868 INFO L87 Difference]: Start difference. First operand 168 states and 249 transitions. Second operand 4 states. [2020-10-19 22:28:12,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:12,253 INFO L93 Difference]: Finished difference Result 324 states and 486 transitions. [2020-10-19 22:28:12,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:12,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 69 [2020-10-19 22:28:12,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:12,255 INFO L225 Difference]: With dead ends: 324 [2020-10-19 22:28:12,255 INFO L226 Difference]: Without dead ends: 175 [2020-10-19 22:28:12,256 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 22:28:12,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-19 22:28:12,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 168. [2020-10-19 22:28:12,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-19 22:28:12,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 248 transitions. [2020-10-19 22:28:12,262 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 248 transitions. Word has length 69 [2020-10-19 22:28:12,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:12,264 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 248 transitions. [2020-10-19 22:28:12,264 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:12,264 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 248 transitions. [2020-10-19 22:28:12,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-19 22:28:12,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:12,267 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] [2020-10-19 22:28:12,267 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:28:12,267 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:12,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:12,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1988306166, now seen corresponding path program 1 times [2020-10-19 22:28:12,268 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:12,268 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805803075] [2020-10-19 22:28:12,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:12,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:12,365 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 22:28:12,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805803075] [2020-10-19 22:28:12,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:12,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:12,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1617030887] [2020-10-19 22:28:12,369 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:12,369 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:12,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:12,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:12,370 INFO L87 Difference]: Start difference. First operand 168 states and 248 transitions. Second operand 4 states. [2020-10-19 22:28:12,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:12,885 INFO L93 Difference]: Finished difference Result 424 states and 639 transitions. [2020-10-19 22:28:12,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:12,886 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-19 22:28:12,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:12,888 INFO L225 Difference]: With dead ends: 424 [2020-10-19 22:28:12,892 INFO L226 Difference]: Without dead ends: 275 [2020-10-19 22:28:12,893 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 22:28:12,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-10-19 22:28:12,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 198. [2020-10-19 22:28:12,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-19 22:28:12,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 300 transitions. [2020-10-19 22:28:12,905 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 300 transitions. Word has length 74 [2020-10-19 22:28:12,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:12,906 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 300 transitions. [2020-10-19 22:28:12,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:12,907 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 300 transitions. [2020-10-19 22:28:12,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-19 22:28:12,908 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:12,908 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] [2020-10-19 22:28:12,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:28:12,909 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:12,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:12,909 INFO L82 PathProgramCache]: Analyzing trace with hash -2060692724, now seen corresponding path program 1 times [2020-10-19 22:28:12,910 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:12,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096315553] [2020-10-19 22:28:12,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:13,004 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 22:28:13,005 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096315553] [2020-10-19 22:28:13,005 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:13,005 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:13,006 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931255200] [2020-10-19 22:28:13,006 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:13,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:13,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:13,007 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:13,007 INFO L87 Difference]: Start difference. First operand 198 states and 300 transitions. Second operand 4 states. [2020-10-19 22:28:13,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:13,479 INFO L93 Difference]: Finished difference Result 427 states and 655 transitions. [2020-10-19 22:28:13,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:13,480 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 74 [2020-10-19 22:28:13,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:13,481 INFO L225 Difference]: With dead ends: 427 [2020-10-19 22:28:13,481 INFO L226 Difference]: Without dead ends: 248 [2020-10-19 22:28:13,482 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 22:28:13,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-19 22:28:13,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 222. [2020-10-19 22:28:13,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 222 states. [2020-10-19 22:28:13,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 342 transitions. [2020-10-19 22:28:13,489 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 342 transitions. Word has length 74 [2020-10-19 22:28:13,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:13,489 INFO L481 AbstractCegarLoop]: Abstraction has 222 states and 342 transitions. [2020-10-19 22:28:13,489 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:13,490 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 342 transitions. [2020-10-19 22:28:13,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 22:28:13,491 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:13,491 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] [2020-10-19 22:28:13,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:28:13,492 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:13,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:13,492 INFO L82 PathProgramCache]: Analyzing trace with hash 880688961, now seen corresponding path program 1 times [2020-10-19 22:28:13,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:13,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75340909] [2020-10-19 22:28:13,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:13,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:13,554 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 22:28:13,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75340909] [2020-10-19 22:28:13,555 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:13,555 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:13,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222527406] [2020-10-19 22:28:13,556 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:13,556 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:13,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:13,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:13,557 INFO L87 Difference]: Start difference. First operand 222 states and 342 transitions. Second operand 4 states. [2020-10-19 22:28:14,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:14,204 INFO L93 Difference]: Finished difference Result 494 states and 761 transitions. [2020-10-19 22:28:14,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:14,206 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-19 22:28:14,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:14,208 INFO L225 Difference]: With dead ends: 494 [2020-10-19 22:28:14,209 INFO L226 Difference]: Without dead ends: 291 [2020-10-19 22:28:14,210 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 22:28:14,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-19 22:28:14,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 223. [2020-10-19 22:28:14,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-19 22:28:14,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 343 transitions. [2020-10-19 22:28:14,221 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 343 transitions. Word has length 75 [2020-10-19 22:28:14,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:14,221 INFO L481 AbstractCegarLoop]: Abstraction has 223 states and 343 transitions. [2020-10-19 22:28:14,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:14,222 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 343 transitions. [2020-10-19 22:28:14,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-19 22:28:14,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:14,224 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] [2020-10-19 22:28:14,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:28:14,225 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:14,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:14,226 INFO L82 PathProgramCache]: Analyzing trace with hash 301633263, now seen corresponding path program 1 times [2020-10-19 22:28:14,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:14,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254478976] [2020-10-19 22:28:14,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:14,313 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 22:28:14,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254478976] [2020-10-19 22:28:14,314 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:14,314 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:14,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766199811] [2020-10-19 22:28:14,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:14,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:14,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:14,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:14,316 INFO L87 Difference]: Start difference. First operand 223 states and 343 transitions. Second operand 4 states. [2020-10-19 22:28:15,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:15,055 INFO L93 Difference]: Finished difference Result 495 states and 761 transitions. [2020-10-19 22:28:15,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:15,056 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 81 [2020-10-19 22:28:15,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:15,059 INFO L225 Difference]: With dead ends: 495 [2020-10-19 22:28:15,059 INFO L226 Difference]: Without dead ends: 291 [2020-10-19 22:28:15,060 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 22:28:15,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-10-19 22:28:15,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 233. [2020-10-19 22:28:15,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-19 22:28:15,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 362 transitions. [2020-10-19 22:28:15,071 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 362 transitions. Word has length 81 [2020-10-19 22:28:15,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:15,072 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 362 transitions. [2020-10-19 22:28:15,072 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:15,072 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 362 transitions. [2020-10-19 22:28:15,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-19 22:28:15,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:15,075 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] [2020-10-19 22:28:15,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:28:15,075 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:15,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:15,076 INFO L82 PathProgramCache]: Analyzing trace with hash 542590269, now seen corresponding path program 1 times [2020-10-19 22:28:15,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:15,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098046724] [2020-10-19 22:28:15,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:15,195 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 22:28:15,196 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098046724] [2020-10-19 22:28:15,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:15,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:15,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932774996] [2020-10-19 22:28:15,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:15,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:15,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:15,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:15,199 INFO L87 Difference]: Start difference. First operand 233 states and 362 transitions. Second operand 4 states. [2020-10-19 22:28:15,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:15,742 INFO L93 Difference]: Finished difference Result 497 states and 768 transitions. [2020-10-19 22:28:15,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:15,743 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-19 22:28:15,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:15,745 INFO L225 Difference]: With dead ends: 497 [2020-10-19 22:28:15,745 INFO L226 Difference]: Without dead ends: 283 [2020-10-19 22:28:15,746 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 22:28:15,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-19 22:28:15,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2020-10-19 22:28:15,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-19 22:28:15,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 363 transitions. [2020-10-19 22:28:15,754 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 363 transitions. Word has length 82 [2020-10-19 22:28:15,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:15,755 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 363 transitions. [2020-10-19 22:28:15,755 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:15,755 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 363 transitions. [2020-10-19 22:28:15,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-19 22:28:15,756 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:15,756 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] [2020-10-19 22:28:15,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:28:15,757 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:15,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:15,757 INFO L82 PathProgramCache]: Analyzing trace with hash 354437512, now seen corresponding path program 1 times [2020-10-19 22:28:15,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:15,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412735185] [2020-10-19 22:28:15,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:15,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:15,836 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 22:28:15,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412735185] [2020-10-19 22:28:15,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:15,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:15,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892454237] [2020-10-19 22:28:15,838 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:15,838 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:15,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:15,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:15,839 INFO L87 Difference]: Start difference. First operand 234 states and 363 transitions. Second operand 4 states. [2020-10-19 22:28:16,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:16,345 INFO L93 Difference]: Finished difference Result 498 states and 768 transitions. [2020-10-19 22:28:16,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:16,346 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-19 22:28:16,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:16,348 INFO L225 Difference]: With dead ends: 498 [2020-10-19 22:28:16,348 INFO L226 Difference]: Without dead ends: 283 [2020-10-19 22:28:16,349 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 22:28:16,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-19 22:28:16,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 234. [2020-10-19 22:28:16,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-19 22:28:16,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 362 transitions. [2020-10-19 22:28:16,357 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 362 transitions. Word has length 87 [2020-10-19 22:28:16,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:16,358 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 362 transitions. [2020-10-19 22:28:16,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:16,358 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 362 transitions. [2020-10-19 22:28:16,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-19 22:28:16,359 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:16,359 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] [2020-10-19 22:28:16,360 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:28:16,360 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:16,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:16,360 INFO L82 PathProgramCache]: Analyzing trace with hash -2012257082, now seen corresponding path program 1 times [2020-10-19 22:28:16,361 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:16,361 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075628104] [2020-10-19 22:28:16,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:16,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:16,442 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 22:28:16,442 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075628104] [2020-10-19 22:28:16,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:16,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:16,443 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077937263] [2020-10-19 22:28:16,444 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:16,444 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:16,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:16,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:16,445 INFO L87 Difference]: Start difference. First operand 234 states and 362 transitions. Second operand 4 states. [2020-10-19 22:28:16,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:16,877 INFO L93 Difference]: Finished difference Result 475 states and 736 transitions. [2020-10-19 22:28:16,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:16,878 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 87 [2020-10-19 22:28:16,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:16,881 INFO L225 Difference]: With dead ends: 475 [2020-10-19 22:28:16,881 INFO L226 Difference]: Without dead ends: 260 [2020-10-19 22:28:16,882 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 22:28:16,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-19 22:28:16,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 234. [2020-10-19 22:28:16,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-19 22:28:16,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2020-10-19 22:28:16,888 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 87 [2020-10-19 22:28:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:16,889 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2020-10-19 22:28:16,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2020-10-19 22:28:16,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 22:28:16,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:16,890 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] [2020-10-19 22:28:16,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:28:16,891 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:16,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:16,891 INFO L82 PathProgramCache]: Analyzing trace with hash 2010828614, now seen corresponding path program 1 times [2020-10-19 22:28:16,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:16,892 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906861169] [2020-10-19 22:28:16,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:16,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:16,957 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 22:28:16,957 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906861169] [2020-10-19 22:28:16,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:16,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:16,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1357451217] [2020-10-19 22:28:16,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:16,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:16,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:16,960 INFO L87 Difference]: Start difference. First operand 234 states and 361 transitions. Second operand 4 states. [2020-10-19 22:28:17,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:17,517 INFO L93 Difference]: Finished difference Result 497 states and 763 transitions. [2020-10-19 22:28:17,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:17,518 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-19 22:28:17,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:17,520 INFO L225 Difference]: With dead ends: 497 [2020-10-19 22:28:17,520 INFO L226 Difference]: Without dead ends: 282 [2020-10-19 22:28:17,521 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 22:28:17,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-19 22:28:17,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 234. [2020-10-19 22:28:17,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-19 22:28:17,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 360 transitions. [2020-10-19 22:28:17,529 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 360 transitions. Word has length 88 [2020-10-19 22:28:17,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:17,530 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 360 transitions. [2020-10-19 22:28:17,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:17,530 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 360 transitions. [2020-10-19 22:28:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 22:28:17,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:17,531 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] [2020-10-19 22:28:17,533 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:28:17,534 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:17,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1947077233, now seen corresponding path program 1 times [2020-10-19 22:28:17,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:17,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281558381] [2020-10-19 22:28:17,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:17,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:17,645 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 22:28:17,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281558381] [2020-10-19 22:28:17,646 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:17,646 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:17,646 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160300771] [2020-10-19 22:28:17,647 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:17,647 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:17,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:17,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:17,648 INFO L87 Difference]: Start difference. First operand 234 states and 360 transitions. Second operand 4 states. [2020-10-19 22:28:18,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:18,092 INFO L93 Difference]: Finished difference Result 495 states and 759 transitions. [2020-10-19 22:28:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:18,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-19 22:28:18,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:18,095 INFO L225 Difference]: With dead ends: 495 [2020-10-19 22:28:18,095 INFO L226 Difference]: Without dead ends: 280 [2020-10-19 22:28:18,096 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 22:28:18,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-19 22:28:18,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 234. [2020-10-19 22:28:18,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-19 22:28:18,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 359 transitions. [2020-10-19 22:28:18,103 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 359 transitions. Word has length 88 [2020-10-19 22:28:18,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:18,104 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 359 transitions. [2020-10-19 22:28:18,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:18,104 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 359 transitions. [2020-10-19 22:28:18,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 22:28:18,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:18,106 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] [2020-10-19 22:28:18,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 22:28:18,106 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:18,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:18,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1807744591, now seen corresponding path program 1 times [2020-10-19 22:28:18,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:18,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349278067] [2020-10-19 22:28:18,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:18,175 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 22:28:18,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349278067] [2020-10-19 22:28:18,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:18,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:18,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063251096] [2020-10-19 22:28:18,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:18,177 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:18,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:18,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:18,180 INFO L87 Difference]: Start difference. First operand 234 states and 359 transitions. Second operand 4 states. [2020-10-19 22:28:18,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:18,640 INFO L93 Difference]: Finished difference Result 494 states and 756 transitions. [2020-10-19 22:28:18,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:18,641 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-19 22:28:18,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:18,644 INFO L225 Difference]: With dead ends: 494 [2020-10-19 22:28:18,644 INFO L226 Difference]: Without dead ends: 279 [2020-10-19 22:28:18,645 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 22:28:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-19 22:28:18,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 234. [2020-10-19 22:28:18,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2020-10-19 22:28:18,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 358 transitions. [2020-10-19 22:28:18,653 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 358 transitions. Word has length 88 [2020-10-19 22:28:18,653 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:18,653 INFO L481 AbstractCegarLoop]: Abstraction has 234 states and 358 transitions. [2020-10-19 22:28:18,653 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:18,653 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 358 transitions. [2020-10-19 22:28:18,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 22:28:18,654 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:18,655 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] [2020-10-19 22:28:18,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 22:28:18,655 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:18,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:18,656 INFO L82 PathProgramCache]: Analyzing trace with hash -1418559526, now seen corresponding path program 1 times [2020-10-19 22:28:18,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:18,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395735413] [2020-10-19 22:28:18,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:18,756 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 22:28:18,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395735413] [2020-10-19 22:28:18,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:18,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:28:18,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130144164] [2020-10-19 22:28:18,757 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:28:18,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:18,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:28:18,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:28:18,758 INFO L87 Difference]: Start difference. First operand 234 states and 358 transitions. Second operand 5 states. [2020-10-19 22:28:19,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:19,266 INFO L93 Difference]: Finished difference Result 470 states and 724 transitions. [2020-10-19 22:28:19,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:28:19,267 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 88 [2020-10-19 22:28:19,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:19,269 INFO L225 Difference]: With dead ends: 470 [2020-10-19 22:28:19,270 INFO L226 Difference]: Without dead ends: 255 [2020-10-19 22:28:19,272 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 22:28:19,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-19 22:28:19,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 254. [2020-10-19 22:28:19,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:19,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 384 transitions. [2020-10-19 22:28:19,283 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 384 transitions. Word has length 88 [2020-10-19 22:28:19,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:19,284 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 384 transitions. [2020-10-19 22:28:19,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:28:19,284 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 384 transitions. [2020-10-19 22:28:19,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 22:28:19,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:19,286 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] [2020-10-19 22:28:19,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 22:28:19,287 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:19,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:19,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1593988851, now seen corresponding path program 1 times [2020-10-19 22:28:19,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:19,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807562528] [2020-10-19 22:28:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:19,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:19,388 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 22:28:19,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807562528] [2020-10-19 22:28:19,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:19,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:19,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531966504] [2020-10-19 22:28:19,391 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:19,391 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:19,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:19,392 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:19,392 INFO L87 Difference]: Start difference. First operand 254 states and 384 transitions. Second operand 4 states. [2020-10-19 22:28:19,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:19,796 INFO L93 Difference]: Finished difference Result 512 states and 776 transitions. [2020-10-19 22:28:19,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:19,797 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-19 22:28:19,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:19,799 INFO L225 Difference]: With dead ends: 512 [2020-10-19 22:28:19,799 INFO L226 Difference]: Without dead ends: 277 [2020-10-19 22:28:19,800 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 22:28:19,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2020-10-19 22:28:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 254. [2020-10-19 22:28:19,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:19,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 383 transitions. [2020-10-19 22:28:19,807 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 383 transitions. Word has length 88 [2020-10-19 22:28:19,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:19,807 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 383 transitions. [2020-10-19 22:28:19,808 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:19,808 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 383 transitions. [2020-10-19 22:28:19,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-19 22:28:19,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:19,809 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] [2020-10-19 22:28:19,810 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 22:28:19,810 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:19,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:19,810 INFO L82 PathProgramCache]: Analyzing trace with hash 2134134323, now seen corresponding path program 1 times [2020-10-19 22:28:19,811 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:19,811 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1694503506] [2020-10-19 22:28:19,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:19,867 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 22:28:19,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1694503506] [2020-10-19 22:28:19,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:19,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:19,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373430118] [2020-10-19 22:28:19,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:19,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:19,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:19,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:19,870 INFO L87 Difference]: Start difference. First operand 254 states and 383 transitions. Second operand 4 states. [2020-10-19 22:28:20,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:20,243 INFO L93 Difference]: Finished difference Result 511 states and 773 transitions. [2020-10-19 22:28:20,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:20,244 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 88 [2020-10-19 22:28:20,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:20,245 INFO L225 Difference]: With dead ends: 511 [2020-10-19 22:28:20,246 INFO L226 Difference]: Without dead ends: 276 [2020-10-19 22:28:20,247 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 22:28:20,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-19 22:28:20,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-10-19 22:28:20,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:20,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 382 transitions. [2020-10-19 22:28:20,254 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 382 transitions. Word has length 88 [2020-10-19 22:28:20,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:20,254 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 382 transitions. [2020-10-19 22:28:20,255 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:20,255 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 382 transitions. [2020-10-19 22:28:20,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-19 22:28:20,256 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:20,256 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] [2020-10-19 22:28:20,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 22:28:20,257 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:20,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:20,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1582169212, now seen corresponding path program 1 times [2020-10-19 22:28:20,258 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:20,258 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574496672] [2020-10-19 22:28:20,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:20,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:20,314 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 22:28:20,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574496672] [2020-10-19 22:28:20,315 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:20,315 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:20,315 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [901759364] [2020-10-19 22:28:20,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:20,316 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:20,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:20,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:20,317 INFO L87 Difference]: Start difference. First operand 254 states and 382 transitions. Second operand 4 states. [2020-10-19 22:28:20,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:20,787 INFO L93 Difference]: Finished difference Result 534 states and 801 transitions. [2020-10-19 22:28:20,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:20,787 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-19 22:28:20,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:20,790 INFO L225 Difference]: With dead ends: 534 [2020-10-19 22:28:20,790 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:28:20,791 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 22:28:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:28:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2020-10-19 22:28:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:20,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 381 transitions. [2020-10-19 22:28:20,798 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 381 transitions. Word has length 89 [2020-10-19 22:28:20,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:20,799 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 381 transitions. [2020-10-19 22:28:20,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:20,799 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 381 transitions. [2020-10-19 22:28:20,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-19 22:28:20,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:20,801 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] [2020-10-19 22:28:20,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 22:28:20,801 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:20,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:20,801 INFO L82 PathProgramCache]: Analyzing trace with hash 356992834, now seen corresponding path program 1 times [2020-10-19 22:28:20,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:20,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866697425] [2020-10-19 22:28:20,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:20,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:20,854 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 22:28:20,854 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866697425] [2020-10-19 22:28:20,855 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:20,855 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:20,855 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273827132] [2020-10-19 22:28:20,856 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:20,856 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:20,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:20,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:20,857 INFO L87 Difference]: Start difference. First operand 254 states and 381 transitions. Second operand 4 states. [2020-10-19 22:28:21,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:21,214 INFO L93 Difference]: Finished difference Result 511 states and 769 transitions. [2020-10-19 22:28:21,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:21,215 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 89 [2020-10-19 22:28:21,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:21,217 INFO L225 Difference]: With dead ends: 511 [2020-10-19 22:28:21,217 INFO L226 Difference]: Without dead ends: 276 [2020-10-19 22:28:21,218 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 22:28:21,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-19 22:28:21,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-10-19 22:28:21,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:21,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 380 transitions. [2020-10-19 22:28:21,226 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 380 transitions. Word has length 89 [2020-10-19 22:28:21,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:21,227 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 380 transitions. [2020-10-19 22:28:21,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:21,227 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 380 transitions. [2020-10-19 22:28:21,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-19 22:28:21,228 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:21,228 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] [2020-10-19 22:28:21,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 22:28:21,229 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:21,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:21,229 INFO L82 PathProgramCache]: Analyzing trace with hash -2129784979, now seen corresponding path program 1 times [2020-10-19 22:28:21,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:21,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020822064] [2020-10-19 22:28:21,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:21,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:21,285 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 22:28:21,285 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020822064] [2020-10-19 22:28:21,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:21,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:21,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [267178572] [2020-10-19 22:28:21,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:21,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:21,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:21,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:21,287 INFO L87 Difference]: Start difference. First operand 254 states and 380 transitions. Second operand 4 states. [2020-10-19 22:28:21,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:21,747 INFO L93 Difference]: Finished difference Result 534 states and 797 transitions. [2020-10-19 22:28:21,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:21,747 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-19 22:28:21,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:21,749 INFO L225 Difference]: With dead ends: 534 [2020-10-19 22:28:21,749 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:28:21,750 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 22:28:21,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:28:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2020-10-19 22:28:21,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:21,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 379 transitions. [2020-10-19 22:28:21,758 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 379 transitions. Word has length 90 [2020-10-19 22:28:21,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:21,759 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 379 transitions. [2020-10-19 22:28:21,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:21,759 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 379 transitions. [2020-10-19 22:28:21,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-19 22:28:21,760 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:21,760 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] [2020-10-19 22:28:21,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 22:28:21,761 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:21,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:21,761 INFO L82 PathProgramCache]: Analyzing trace with hash -2145303697, now seen corresponding path program 1 times [2020-10-19 22:28:21,761 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:21,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648797838] [2020-10-19 22:28:21,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:21,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:21,828 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 22:28:21,828 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648797838] [2020-10-19 22:28:21,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:21,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:21,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296516409] [2020-10-19 22:28:21,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:21,831 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:21,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:21,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:21,831 INFO L87 Difference]: Start difference. First operand 254 states and 379 transitions. Second operand 4 states. [2020-10-19 22:28:22,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:22,187 INFO L93 Difference]: Finished difference Result 511 states and 765 transitions. [2020-10-19 22:28:22,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:22,189 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 90 [2020-10-19 22:28:22,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:22,191 INFO L225 Difference]: With dead ends: 511 [2020-10-19 22:28:22,191 INFO L226 Difference]: Without dead ends: 276 [2020-10-19 22:28:22,192 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 22:28:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-19 22:28:22,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-10-19 22:28:22,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:22,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 378 transitions. [2020-10-19 22:28:22,199 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 378 transitions. Word has length 90 [2020-10-19 22:28:22,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:22,199 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 378 transitions. [2020-10-19 22:28:22,199 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:22,199 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 378 transitions. [2020-10-19 22:28:22,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-19 22:28:22,200 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:22,201 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] [2020-10-19 22:28:22,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 22:28:22,201 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:22,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:22,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1086928127, now seen corresponding path program 1 times [2020-10-19 22:28:22,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:22,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127580852] [2020-10-19 22:28:22,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:22,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:22,258 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 22:28:22,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127580852] [2020-10-19 22:28:22,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:22,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:22,259 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48753918] [2020-10-19 22:28:22,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:22,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:22,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:22,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:22,261 INFO L87 Difference]: Start difference. First operand 254 states and 378 transitions. Second operand 4 states. [2020-10-19 22:28:22,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:22,773 INFO L93 Difference]: Finished difference Result 534 states and 793 transitions. [2020-10-19 22:28:22,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:22,774 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-19 22:28:22,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:22,776 INFO L225 Difference]: With dead ends: 534 [2020-10-19 22:28:22,776 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:28:22,776 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 22:28:22,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:28:22,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 254. [2020-10-19 22:28:22,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:22,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 377 transitions. [2020-10-19 22:28:22,784 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 377 transitions. Word has length 91 [2020-10-19 22:28:22,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:22,784 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 377 transitions. [2020-10-19 22:28:22,784 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:22,784 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 377 transitions. [2020-10-19 22:28:22,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-19 22:28:22,785 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:22,785 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] [2020-10-19 22:28:22,785 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 22:28:22,785 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:22,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:22,786 INFO L82 PathProgramCache]: Analyzing trace with hash 605847869, now seen corresponding path program 1 times [2020-10-19 22:28:22,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:22,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185689337] [2020-10-19 22:28:22,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:22,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:22,869 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 22:28:22,869 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185689337] [2020-10-19 22:28:22,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:22,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:22,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519489793] [2020-10-19 22:28:22,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:22,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:22,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:22,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:22,875 INFO L87 Difference]: Start difference. First operand 254 states and 377 transitions. Second operand 4 states. [2020-10-19 22:28:23,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:23,257 INFO L93 Difference]: Finished difference Result 511 states and 761 transitions. [2020-10-19 22:28:23,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:23,259 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 91 [2020-10-19 22:28:23,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:23,260 INFO L225 Difference]: With dead ends: 511 [2020-10-19 22:28:23,260 INFO L226 Difference]: Without dead ends: 276 [2020-10-19 22:28:23,261 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 22:28:23,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-19 22:28:23,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 254. [2020-10-19 22:28:23,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:23,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 376 transitions. [2020-10-19 22:28:23,268 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 376 transitions. Word has length 91 [2020-10-19 22:28:23,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:23,269 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 376 transitions. [2020-10-19 22:28:23,269 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:23,269 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 376 transitions. [2020-10-19 22:28:23,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-19 22:28:23,270 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:23,270 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] [2020-10-19 22:28:23,271 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-19 22:28:23,271 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:23,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:23,271 INFO L82 PathProgramCache]: Analyzing trace with hash 738752008, now seen corresponding path program 1 times [2020-10-19 22:28:23,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:23,272 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [395296498] [2020-10-19 22:28:23,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:23,329 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 22:28:23,330 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [395296498] [2020-10-19 22:28:23,330 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:23,331 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:23,331 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788997053] [2020-10-19 22:28:23,331 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:23,331 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:23,332 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:23,332 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:23,332 INFO L87 Difference]: Start difference. First operand 254 states and 376 transitions. Second operand 4 states. [2020-10-19 22:28:23,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:23,778 INFO L93 Difference]: Finished difference Result 524 states and 777 transitions. [2020-10-19 22:28:23,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:23,778 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-19 22:28:23,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:23,781 INFO L225 Difference]: With dead ends: 524 [2020-10-19 22:28:23,781 INFO L226 Difference]: Without dead ends: 289 [2020-10-19 22:28:23,782 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 22:28:23,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-19 22:28:23,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2020-10-19 22:28:23,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:23,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 375 transitions. [2020-10-19 22:28:23,799 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 375 transitions. Word has length 92 [2020-10-19 22:28:23,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:23,799 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 375 transitions. [2020-10-19 22:28:23,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:23,799 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 375 transitions. [2020-10-19 22:28:23,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-19 22:28:23,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:23,801 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] [2020-10-19 22:28:23,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 22:28:23,801 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:23,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:23,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1289834102, now seen corresponding path program 1 times [2020-10-19 22:28:23,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:23,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047005352] [2020-10-19 22:28:23,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:23,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:23,889 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 22:28:23,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047005352] [2020-10-19 22:28:23,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:23,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:23,890 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476810395] [2020-10-19 22:28:23,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:23,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:23,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:23,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:23,892 INFO L87 Difference]: Start difference. First operand 254 states and 375 transitions. Second operand 4 states. [2020-10-19 22:28:24,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:24,232 INFO L93 Difference]: Finished difference Result 501 states and 745 transitions. [2020-10-19 22:28:24,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:24,233 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 92 [2020-10-19 22:28:24,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:24,235 INFO L225 Difference]: With dead ends: 501 [2020-10-19 22:28:24,235 INFO L226 Difference]: Without dead ends: 266 [2020-10-19 22:28:24,236 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 22:28:24,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-19 22:28:24,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 254. [2020-10-19 22:28:24,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:24,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 374 transitions. [2020-10-19 22:28:24,244 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 374 transitions. Word has length 92 [2020-10-19 22:28:24,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:24,244 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 374 transitions. [2020-10-19 22:28:24,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:24,245 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 374 transitions. [2020-10-19 22:28:24,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-19 22:28:24,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:24,246 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] [2020-10-19 22:28:24,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-19 22:28:24,246 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:24,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:24,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1110599922, now seen corresponding path program 1 times [2020-10-19 22:28:24,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:24,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194453455] [2020-10-19 22:28:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:24,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:24,302 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 22:28:24,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194453455] [2020-10-19 22:28:24,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:24,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:28:24,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495580677] [2020-10-19 22:28:24,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:24,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:24,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:24,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:24,305 INFO L87 Difference]: Start difference. First operand 254 states and 374 transitions. Second operand 4 states. [2020-10-19 22:28:24,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:24,722 INFO L93 Difference]: Finished difference Result 524 states and 773 transitions. [2020-10-19 22:28:24,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:24,733 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 96 [2020-10-19 22:28:24,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:24,734 INFO L225 Difference]: With dead ends: 524 [2020-10-19 22:28:24,734 INFO L226 Difference]: Without dead ends: 289 [2020-10-19 22:28:24,735 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 22:28:24,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-19 22:28:24,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 254. [2020-10-19 22:28:24,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 254 states. [2020-10-19 22:28:24,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 373 transitions. [2020-10-19 22:28:24,743 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 373 transitions. Word has length 96 [2020-10-19 22:28:24,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:24,743 INFO L481 AbstractCegarLoop]: Abstraction has 254 states and 373 transitions. [2020-10-19 22:28:24,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:24,743 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 373 transitions. [2020-10-19 22:28:24,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-19 22:28:24,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:24,745 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] [2020-10-19 22:28:24,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-19 22:28:24,745 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:24,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:24,746 INFO L82 PathProgramCache]: Analyzing trace with hash 276185488, now seen corresponding path program 1 times [2020-10-19 22:28:24,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:24,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521674087] [2020-10-19 22:28:24,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:24,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:24,806 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 22:28:24,807 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521674087] [2020-10-19 22:28:24,807 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:24,808 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:28:24,808 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190456184] [2020-10-19 22:28:24,808 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:28:24,808 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:24,809 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:28:24,809 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:28:24,809 INFO L87 Difference]: Start difference. First operand 254 states and 373 transitions. Second operand 3 states. [2020-10-19 22:28:24,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:24,934 INFO L93 Difference]: Finished difference Result 719 states and 1071 transitions. [2020-10-19 22:28:24,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:28:24,935 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-10-19 22:28:24,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:24,938 INFO L225 Difference]: With dead ends: 719 [2020-10-19 22:28:24,938 INFO L226 Difference]: Without dead ends: 484 [2020-10-19 22:28:24,939 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 22:28:24,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2020-10-19 22:28:24,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 484. [2020-10-19 22:28:24,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 484 states. [2020-10-19 22:28:24,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 484 states to 484 states and 710 transitions. [2020-10-19 22:28:24,952 INFO L78 Accepts]: Start accepts. Automaton has 484 states and 710 transitions. Word has length 96 [2020-10-19 22:28:24,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:24,952 INFO L481 AbstractCegarLoop]: Abstraction has 484 states and 710 transitions. [2020-10-19 22:28:24,952 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:28:24,953 INFO L276 IsEmpty]: Start isEmpty. Operand 484 states and 710 transitions. [2020-10-19 22:28:24,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-19 22:28:24,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:24,954 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] [2020-10-19 22:28:24,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-19 22:28:24,955 INFO L429 AbstractCegarLoop]: === Iteration 42 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:24,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:24,955 INFO L82 PathProgramCache]: Analyzing trace with hash 1537102738, now seen corresponding path program 1 times [2020-10-19 22:28:24,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:24,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938049401] [2020-10-19 22:28:24,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:24,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:25,009 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 22:28:25,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938049401] [2020-10-19 22:28:25,010 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:25,010 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:28:25,010 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052062722] [2020-10-19 22:28:25,011 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:28:25,011 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:25,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:28:25,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:28:25,012 INFO L87 Difference]: Start difference. First operand 484 states and 710 transitions. Second operand 3 states. [2020-10-19 22:28:25,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:25,085 INFO L93 Difference]: Finished difference Result 976 states and 1435 transitions. [2020-10-19 22:28:25,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:28:25,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-10-19 22:28:25,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:25,088 INFO L225 Difference]: With dead ends: 976 [2020-10-19 22:28:25,088 INFO L226 Difference]: Without dead ends: 511 [2020-10-19 22:28:25,089 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 22:28:25,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-19 22:28:25,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 511. [2020-10-19 22:28:25,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 511 states. [2020-10-19 22:28:25,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 745 transitions. [2020-10-19 22:28:25,104 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 745 transitions. Word has length 96 [2020-10-19 22:28:25,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:25,104 INFO L481 AbstractCegarLoop]: Abstraction has 511 states and 745 transitions. [2020-10-19 22:28:25,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:28:25,104 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 745 transitions. [2020-10-19 22:28:25,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-19 22:28:25,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:25,106 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] [2020-10-19 22:28:25,106 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-19 22:28:25,106 INFO L429 AbstractCegarLoop]: === Iteration 43 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:25,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:25,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1564168340, now seen corresponding path program 1 times [2020-10-19 22:28:25,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:25,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978986120] [2020-10-19 22:28:25,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:25,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:25,145 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 22:28:25,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978986120] [2020-10-19 22:28:25,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:25,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:28:25,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601367393] [2020-10-19 22:28:25,148 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:28:25,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:25,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:28:25,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:28:25,149 INFO L87 Difference]: Start difference. First operand 511 states and 745 transitions. Second operand 3 states. [2020-10-19 22:28:25,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:25,186 INFO L93 Difference]: Finished difference Result 1005 states and 1471 transitions. [2020-10-19 22:28:25,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:28:25,187 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 96 [2020-10-19 22:28:25,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:25,190 INFO L225 Difference]: With dead ends: 1005 [2020-10-19 22:28:25,190 INFO L226 Difference]: Without dead ends: 513 [2020-10-19 22:28:25,192 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 22:28:25,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2020-10-19 22:28:25,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 513. [2020-10-19 22:28:25,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 513 states. [2020-10-19 22:28:25,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 513 states to 513 states and 747 transitions. [2020-10-19 22:28:25,206 INFO L78 Accepts]: Start accepts. Automaton has 513 states and 747 transitions. Word has length 96 [2020-10-19 22:28:25,206 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:25,207 INFO L481 AbstractCegarLoop]: Abstraction has 513 states and 747 transitions. [2020-10-19 22:28:25,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:28:25,208 INFO L276 IsEmpty]: Start isEmpty. Operand 513 states and 747 transitions. [2020-10-19 22:28:25,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:28:25,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:25,209 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] [2020-10-19 22:28:25,210 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-19 22:28:25,210 INFO L429 AbstractCegarLoop]: === Iteration 44 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:25,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:25,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1173556134, now seen corresponding path program 1 times [2020-10-19 22:28:25,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:25,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128176510] [2020-10-19 22:28:25,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:25,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:25,263 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-19 22:28:25,264 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128176510] [2020-10-19 22:28:25,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:25,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:28:25,264 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424893036] [2020-10-19 22:28:25,265 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:28:25,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:25,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:28:25,265 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:28:25,266 INFO L87 Difference]: Start difference. First operand 513 states and 747 transitions. Second operand 3 states. [2020-10-19 22:28:25,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:25,335 INFO L93 Difference]: Finished difference Result 1240 states and 1821 transitions. [2020-10-19 22:28:25,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:28:25,336 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 98 [2020-10-19 22:28:25,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:25,339 INFO L225 Difference]: With dead ends: 1240 [2020-10-19 22:28:25,340 INFO L226 Difference]: Without dead ends: 748 [2020-10-19 22:28:25,341 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 22:28:25,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 748 states. [2020-10-19 22:28:25,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 748 to 746. [2020-10-19 22:28:25,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 746 states. [2020-10-19 22:28:25,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 746 states to 746 states and 1095 transitions. [2020-10-19 22:28:25,361 INFO L78 Accepts]: Start accepts. Automaton has 746 states and 1095 transitions. Word has length 98 [2020-10-19 22:28:25,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:25,361 INFO L481 AbstractCegarLoop]: Abstraction has 746 states and 1095 transitions. [2020-10-19 22:28:25,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:28:25,361 INFO L276 IsEmpty]: Start isEmpty. Operand 746 states and 1095 transitions. [2020-10-19 22:28:25,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-19 22:28:25,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:25,363 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] [2020-10-19 22:28:25,364 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-19 22:28:25,364 INFO L429 AbstractCegarLoop]: === Iteration 45 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:25,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:25,364 INFO L82 PathProgramCache]: Analyzing trace with hash -1825940577, now seen corresponding path program 1 times [2020-10-19 22:28:25,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:25,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158122786] [2020-10-19 22:28:25,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:25,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:25,427 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-19 22:28:25,428 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158122786] [2020-10-19 22:28:25,428 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:25,428 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:28:25,429 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126460618] [2020-10-19 22:28:25,429 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:28:25,429 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:25,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:28:25,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:28:25,430 INFO L87 Difference]: Start difference. First operand 746 states and 1095 transitions. Second operand 3 states. [2020-10-19 22:28:25,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:25,511 INFO L93 Difference]: Finished difference Result 1706 states and 2515 transitions. [2020-10-19 22:28:25,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:28:25,511 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 105 [2020-10-19 22:28:25,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:25,517 INFO L225 Difference]: With dead ends: 1706 [2020-10-19 22:28:25,518 INFO L226 Difference]: Without dead ends: 981 [2020-10-19 22:28:25,519 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 22:28:25,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2020-10-19 22:28:25,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 979. [2020-10-19 22:28:25,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 979 states. [2020-10-19 22:28:25,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 979 states to 979 states and 1429 transitions. [2020-10-19 22:28:25,549 INFO L78 Accepts]: Start accepts. Automaton has 979 states and 1429 transitions. Word has length 105 [2020-10-19 22:28:25,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:25,549 INFO L481 AbstractCegarLoop]: Abstraction has 979 states and 1429 transitions. [2020-10-19 22:28:25,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:28:25,550 INFO L276 IsEmpty]: Start isEmpty. Operand 979 states and 1429 transitions. [2020-10-19 22:28:25,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-19 22:28:25,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:25,554 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] [2020-10-19 22:28:25,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-19 22:28:25,555 INFO L429 AbstractCegarLoop]: === Iteration 46 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:25,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:25,555 INFO L82 PathProgramCache]: Analyzing trace with hash 315775349, now seen corresponding path program 1 times [2020-10-19 22:28:25,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:25,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961833302] [2020-10-19 22:28:25,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:25,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:25,659 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-19 22:28:25,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961833302] [2020-10-19 22:28:25,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:25,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:28:25,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187333943] [2020-10-19 22:28:25,661 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:28:25,661 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:28:25,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:28:25,661 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:28:25,662 INFO L87 Difference]: Start difference. First operand 979 states and 1429 transitions. Second operand 3 states. [2020-10-19 22:28:25,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:25,765 INFO L93 Difference]: Finished difference Result 2170 states and 3182 transitions. [2020-10-19 22:28:25,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:28:25,766 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 122 [2020-10-19 22:28:25,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:25,772 INFO L225 Difference]: With dead ends: 2170 [2020-10-19 22:28:25,773 INFO L226 Difference]: Without dead ends: 1212 [2020-10-19 22:28:25,774 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 22:28:25,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1212 states. [2020-10-19 22:28:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1212 to 1212. [2020-10-19 22:28:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1212 states. [2020-10-19 22:28:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1774 transitions. [2020-10-19 22:28:25,818 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1774 transitions. Word has length 122 [2020-10-19 22:28:25,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:25,819 INFO L481 AbstractCegarLoop]: Abstraction has 1212 states and 1774 transitions. [2020-10-19 22:28:25,819 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:28:25,819 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1774 transitions. [2020-10-19 22:28:25,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-19 22:28:25,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:25,822 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:28:25,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-19 22:28:25,823 INFO L429 AbstractCegarLoop]: === Iteration 47 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:25,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:25,823 INFO L82 PathProgramCache]: Analyzing trace with hash -799556719, now seen corresponding path program 1 times [2020-10-19 22:28:25,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:28:25,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [699078231] [2020-10-19 22:28:25,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:28:26,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:28:26,016 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:28:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:28:26,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:28:26,316 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:28:26,317 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:28:26,317 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-19 22:28:26,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:28:26 BoogieIcfgContainer [2020-10-19 22:28:26,536 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:28:26,537 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:28:26,537 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:28:26,537 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:28:26,538 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:28:02" (3/4) ... [2020-10-19 22:28:26,541 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:28:26,542 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:28:26,544 INFO L168 Benchmark]: Toolchain (without parser) took 26235.91 ms. Allocated memory was 35.7 MB in the beginning and 140.5 MB in the end (delta: 104.9 MB). Free memory was 10.8 MB in the beginning and 103.2 MB in the end (delta: -92.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,545 INFO L168 Benchmark]: CDTParser took 0.91 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 27.1 kB). Peak memory consumption was 27.1 kB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 856.50 ms. Allocated memory was 35.7 MB in the beginning and 45.1 MB in the end (delta: 9.4 MB). Free memory was 9.9 MB in the beginning and 18.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 116.26 ms. Allocated memory is still 45.1 MB. Free memory was 18.4 MB in the beginning and 13.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,546 INFO L168 Benchmark]: Boogie Preprocessor took 164.82 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 13.6 MB in the beginning and 19.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,547 INFO L168 Benchmark]: RCFGBuilder took 1310.52 ms. Allocated memory was 46.1 MB in the beginning and 55.6 MB in the end (delta: 9.4 MB). Free memory was 19.9 MB in the beginning and 21.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,548 INFO L168 Benchmark]: TraceAbstraction took 23771.64 ms. Allocated memory was 55.6 MB in the beginning and 140.5 MB in the end (delta: 84.9 MB). Free memory was 21.2 MB in the beginning and 105.2 MB in the end (delta: -84.0 MB). Peak memory consumption was 99.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,548 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 140.5 MB. Free memory was 105.2 MB in the beginning and 103.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:26,552 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.91 ms. Allocated memory is still 34.1 MB. Free memory was 19.3 MB in the beginning and 19.2 MB in the end (delta: 27.1 kB). Peak memory consumption was 27.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 856.50 ms. Allocated memory was 35.7 MB in the beginning and 45.1 MB in the end (delta: 9.4 MB). Free memory was 9.9 MB in the beginning and 18.6 MB in the end (delta: -8.7 MB). Peak memory consumption was 9.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 116.26 ms. Allocated memory is still 45.1 MB. Free memory was 18.4 MB in the beginning and 13.6 MB in the end (delta: 4.7 MB). Peak memory consumption was 4.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 164.82 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 13.6 MB in the beginning and 19.9 MB in the end (delta: -6.3 MB). Peak memory consumption was 5.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1310.52 ms. Allocated memory was 46.1 MB in the beginning and 55.6 MB in the end (delta: 9.4 MB). Free memory was 19.9 MB in the beginning and 21.6 MB in the end (delta: -1.7 MB). Peak memory consumption was 17.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 23771.64 ms. Allocated memory was 55.6 MB in the beginning and 140.5 MB in the end (delta: 84.9 MB). Free memory was 21.2 MB in the beginning and 105.2 MB in the end (delta: -84.0 MB). Peak memory consumption was 99.6 MB. Max. memory is 14.3 GB. * Witness Printer took 5.11 ms. Allocated memory is still 140.5 MB. Free memory was 105.2 MB in the beginning and 103.2 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. 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 1446. 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)) [L1082] BUF_MEM *buf ; [L1083] unsigned long l ; [L1084] unsigned long Time ; [L1085] unsigned long tmp ; [L1086] void (*cb)() ; [L1087] long num1 ; [L1088] int ret ; [L1089] int new_state ; [L1090] int state ; [L1091] int skip ; [L1092] int got_new_session ; [L1093] int tmp___1 = __VERIFIER_nondet_int() ; [L1094] int tmp___2 = __VERIFIER_nondet_int() ; [L1095] int tmp___3 = __VERIFIER_nondet_int() ; [L1096] int tmp___4 = __VERIFIER_nondet_int() ; [L1097] int tmp___5 = __VERIFIER_nondet_int() ; [L1098] int tmp___6 = __VERIFIER_nondet_int() ; [L1099] int tmp___7 ; [L1100] long tmp___8 = __VERIFIER_nondet_long() ; [L1101] int tmp___9 = __VERIFIER_nondet_int() ; [L1102] int tmp___10 = __VERIFIER_nondet_int() ; [L1103] int blastFlag ; [L1107] s->state = 8464 [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={6:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={6:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={6:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={6:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={6:0}] [L1349] COND FALSE !(ret <= 0) [L1354] s->hit VAL [init=1, SSLv3_server_data={6:0}] [L1354] COND FALSE !(s->hit) [L1357] s->state = 8512 VAL [init=1, SSLv3_server_data={6:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND TRUE s->state == 8512 [L1363] EXPR s->s3 [L1363] EXPR (s->s3)->tmp.new_cipher [L1363] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={6:0}] [L1363] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1366] ret = __VERIFIER_nondet_int() [L1367] COND TRUE blastFlag == 2 [L1368] blastFlag = 6 VAL [init=1, SSLv3_server_data={6:0}] [L1372] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={6:0}] [L1378] s->state = 8528 [L1379] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND TRUE s->state == 8528 [L1383] EXPR s->s3 [L1383] EXPR (s->s3)->tmp.new_cipher [L1383] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1383] l = ((s->s3)->tmp.new_cipher)->algorithms [L1384] EXPR s->options VAL [init=1, SSLv3_server_data={6:0}] [L1384] COND TRUE s->options & 2097152UL [L1385] EXPR s->s3 [L1385] (s->s3)->tmp.use_rsa_tmp = 1 [L1389] EXPR s->s3 [L1389] (s->s3)->tmp.use_rsa_tmp VAL [init=1, SSLv3_server_data={6:0}] [L1389] COND TRUE (s->s3)->tmp.use_rsa_tmp [L1407] ret = __VERIFIER_nondet_int() [L1408] COND TRUE blastFlag == 6 [L1409] blastFlag = 7 VAL [init=1, SSLv3_server_data={6:0}] [L1413] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={6:0}] [L1430] s->state = 8544 [L1431] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={6:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1192] COND TRUE s->state == 8544 [L1435] EXPR s->verify_mode VAL [init=1, SSLv3_server_data={6:0}] [L1435] COND TRUE s->verify_mode & 1 [L1436] EXPR s->session [L1436] EXPR (s->session)->peer VAL [init=1, SSLv3_server_data={6:0}] [L1436] COND FALSE !((unsigned long )(s->session)->peer != (unsigned long )((void *)0)) [L1446] EXPR s->s3 [L1446] EXPR (s->s3)->tmp.new_cipher [L1446] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={6:0}] [L1446] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1456] EXPR s->s3 [L1456] (s->s3)->tmp.cert_request = 1 [L1457] ret = __VERIFIER_nondet_int() [L1458] COND TRUE blastFlag == 7 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.11.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.4s, OverallIterations: 47, TraceHistogramMax: 5, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9301 SDtfs, 2847 SDslu, 13200 SDs, 0 SdLazy, 7617 SolverSat, 406 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 252 GetRequests, 92 SyntacticMatches, 32 SemanticMatches, 128 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1212occurred in iteration=46, 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, 46 MinimizatonAttempts, 1099 StatesRemovedByMinimization, 42 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 3665 NumberOfCodeBlocks, 3665 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 3492 ConstructedInterpolants, 0 QuantifiedInterpolants, 799416 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 46 InterpolantComputations, 46 PerfectInterpolantSequences, 2126/2126 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 22:28:28,698 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:28:28,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:28:28,724 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:28:28,724 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:28:28,725 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:28:28,726 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:28:28,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:28:28,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:28:28,739 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:28:28,740 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:28:28,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:28:28,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:28:28,742 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:28:28,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:28:28,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:28:28,745 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:28:28,746 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:28:28,748 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:28:28,750 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:28:28,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:28:28,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:28:28,754 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:28:28,755 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:28:28,757 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:28:28,758 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:28:28,758 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:28:28,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:28:28,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:28:28,760 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:28:28,760 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:28:28,761 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:28:28,762 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:28:28,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:28:28,763 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:28:28,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:28:28,764 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:28:28,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:28:28,765 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:28:28,766 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:28:28,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:28:28,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:28:28,791 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:28:28,792 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:28:28,793 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:28:28,793 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:28:28,793 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:28:28,793 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:28:28,794 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:28:28,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:28:28,794 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:28:28,794 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:28:28,794 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:28:28,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:28:28,795 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:28:28,795 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:28:28,795 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:28:28,795 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:28:28,796 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:28:28,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:28:28,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:28:28,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:28:28,796 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:28:28,797 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:28:28,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:28:28,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:28:28,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:28:28,797 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:28:28,798 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:28:28,798 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:28:28,798 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:28:28,798 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:28:28,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:28:28,798 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 -> 70c3bc063fdec0bf22217db797a4f26edc24e29e [2020-10-19 22:28:29,007 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:28:29,020 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:28:29,023 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:28:29,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:28:29,025 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:28:29,026 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-10-19 22:28:29,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3207913e0/bec18da00d1b431f9854271cecbaadb2/FLAG418a781c4 [2020-10-19 22:28:29,752 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:28:29,753 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.11.i.cil-1.c [2020-10-19 22:28:29,787 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3207913e0/bec18da00d1b431f9854271cecbaadb2/FLAG418a781c4 [2020-10-19 22:28:29,963 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3207913e0/bec18da00d1b431f9854271cecbaadb2 [2020-10-19 22:28:29,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:28:29,975 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:28:29,976 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:28:29,976 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:28:29,984 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:28:29,985 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:28:29" (1/1) ... [2020-10-19 22:28:29,989 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a2cb95d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:29, skipping insertion in model container [2020-10-19 22:28:29,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:28:29" (1/1) ... [2020-10-19 22:28:30,005 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:28:30,098 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:28:30,797 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:28:30,828 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:28:31,037 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:28:31,072 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:28:31,073 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31 WrapperNode [2020-10-19 22:28:31,074 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:28:31,075 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:28:31,075 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:28:31,077 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:28:31,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,143 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,213 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:28:31,214 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:28:31,214 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:28:31,214 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:28:31,224 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,232 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,233 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,275 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (1/1) ... [2020-10-19 22:28:31,296 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:28:31,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:28:31,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:28:31,298 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:28:31,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (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 22:28:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:28:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:28:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:28:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 22:28:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:28:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:28:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:28:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:28:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 22:28:31,654 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:28:35,204 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:28:35,204 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:28:35,217 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:28:35,218 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:28:35,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:28:35 BoogieIcfgContainer [2020-10-19 22:28:35,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:28:35,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:28:35,222 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:28:35,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:28:35,226 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:28:29" (1/3) ... [2020-10-19 22:28:35,227 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ebb025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:28:35, skipping insertion in model container [2020-10-19 22:28:35,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:28:31" (2/3) ... [2020-10-19 22:28:35,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71ebb025 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:28:35, skipping insertion in model container [2020-10-19 22:28:35,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:28:35" (3/3) ... [2020-10-19 22:28:35,230 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.11.i.cil-1.c [2020-10-19 22:28:35,243 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:28:35,252 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:28:35,268 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:28:35,297 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:28:35,297 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:28:35,298 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:28:35,298 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:28:35,298 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:28:35,298 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:28:35,298 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:28:35,298 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:28:35,318 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-10-19 22:28:35,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 22:28:35,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:35,329 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] [2020-10-19 22:28:35,329 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:35,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:35,336 INFO L82 PathProgramCache]: Analyzing trace with hash -2031756972, now seen corresponding path program 1 times [2020-10-19 22:28:35,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:28:35,352 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1920901482] [2020-10-19 22:28:35,353 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 22:28:35,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:35,599 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:28:35,607 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:28:35,668 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 22:28:35,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:28:35,691 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 22:28:35,693 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1920901482] [2020-10-19 22:28:35,694 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:35,694 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:28:35,695 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260007282] [2020-10-19 22:28:35,700 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:35,701 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:28:35,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:35,717 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:35,719 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 4 states. [2020-10-19 22:28:35,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:35,963 INFO L93 Difference]: Finished difference Result 562 states and 958 transitions. [2020-10-19 22:28:35,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:35,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-10-19 22:28:35,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:35,985 INFO L225 Difference]: With dead ends: 562 [2020-10-19 22:28:35,986 INFO L226 Difference]: Without dead ends: 382 [2020-10-19 22:28:35,990 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 66 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 22:28:36,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2020-10-19 22:28:36,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 380. [2020-10-19 22:28:36,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 380 states. [2020-10-19 22:28:36,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 579 transitions. [2020-10-19 22:28:36,077 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 579 transitions. Word has length 35 [2020-10-19 22:28:36,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:36,078 INFO L481 AbstractCegarLoop]: Abstraction has 380 states and 579 transitions. [2020-10-19 22:28:36,078 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:36,078 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 579 transitions. [2020-10-19 22:28:36,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:28:36,082 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:36,083 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] [2020-10-19 22:28:36,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:28:36,297 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:36,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:36,297 INFO L82 PathProgramCache]: Analyzing trace with hash -1192573563, now seen corresponding path program 1 times [2020-10-19 22:28:36,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:28:36,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1597703067] [2020-10-19 22:28:36,299 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 22:28:36,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:36,531 INFO L263 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:28:36,535 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:28:36,562 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 22:28:36,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:28:36,606 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 22:28:36,607 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1597703067] [2020-10-19 22:28:36,607 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:36,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:28:36,608 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751005972] [2020-10-19 22:28:36,609 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:36,610 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:28:36,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:36,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:36,610 INFO L87 Difference]: Start difference. First operand 380 states and 579 transitions. Second operand 4 states. [2020-10-19 22:28:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:37,073 INFO L93 Difference]: Finished difference Result 876 states and 1345 transitions. [2020-10-19 22:28:37,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:37,074 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:28:37,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:37,078 INFO L225 Difference]: With dead ends: 876 [2020-10-19 22:28:37,079 INFO L226 Difference]: Without dead ends: 628 [2020-10-19 22:28:37,081 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 114 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 22:28:37,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2020-10-19 22:28:37,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 626. [2020-10-19 22:28:37,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 626 states. [2020-10-19 22:28:37,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 626 states to 626 states and 950 transitions. [2020-10-19 22:28:37,157 INFO L78 Accepts]: Start accepts. Automaton has 626 states and 950 transitions. Word has length 59 [2020-10-19 22:28:37,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:37,159 INFO L481 AbstractCegarLoop]: Abstraction has 626 states and 950 transitions. [2020-10-19 22:28:37,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:37,160 INFO L276 IsEmpty]: Start isEmpty. Operand 626 states and 950 transitions. [2020-10-19 22:28:37,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:28:37,173 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:37,173 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:28:37,374 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:28:37,375 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:37,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:37,375 INFO L82 PathProgramCache]: Analyzing trace with hash 1680839393, now seen corresponding path program 1 times [2020-10-19 22:28:37,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:28:37,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549397929] [2020-10-19 22:28:37,379 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 22:28:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:37,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:28:37,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:28:37,661 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:28:37,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:28:37,719 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 77 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:28:37,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549397929] [2020-10-19 22:28:37,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:37,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:28:37,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334771515] [2020-10-19 22:28:37,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:28:37,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:28:37,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:28:37,724 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:28:37,724 INFO L87 Difference]: Start difference. First operand 626 states and 950 transitions. Second operand 4 states. [2020-10-19 22:28:38,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:38,673 INFO L93 Difference]: Finished difference Result 1366 states and 2085 transitions. [2020-10-19 22:28:38,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:28:38,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-19 22:28:38,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:38,679 INFO L225 Difference]: With dead ends: 1366 [2020-10-19 22:28:38,679 INFO L226 Difference]: Without dead ends: 872 [2020-10-19 22:28:38,681 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 202 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 22:28:38,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2020-10-19 22:28:38,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 872. [2020-10-19 22:28:38,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 872 states. [2020-10-19 22:28:38,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1320 transitions. [2020-10-19 22:28:38,719 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1320 transitions. Word has length 103 [2020-10-19 22:28:38,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:38,720 INFO L481 AbstractCegarLoop]: Abstraction has 872 states and 1320 transitions. [2020-10-19 22:28:38,720 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:28:38,720 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1320 transitions. [2020-10-19 22:28:38,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-19 22:28:38,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:38,723 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:28:38,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:28:38,931 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:38,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:38,932 INFO L82 PathProgramCache]: Analyzing trace with hash 1159018067, now seen corresponding path program 1 times [2020-10-19 22:28:38,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:28:38,934 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [722942482] [2020-10-19 22:28:38,934 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 22:28:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:28:39,384 INFO L263 TraceCheckSpWp]: Trace formula consists of 328 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:28:39,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:28:39,467 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-10-19 22:28:39,467 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:28:39,472 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:28:39,472 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:28:39,473 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-10-19 22:28:39,517 INFO L350 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2020-10-19 22:28:39,518 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 24 [2020-10-19 22:28:39,519 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:28:39,530 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:28:39,531 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:28:39,531 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:19 [2020-10-19 22:28:39,568 INFO L350 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2020-10-19 22:28:39,569 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 12 [2020-10-19 22:28:39,571 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-19 22:28:39,573 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-19 22:28:39,573 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-19 22:28:39,574 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:30, output treesize:5 [2020-10-19 22:28:39,634 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-19 22:28:39,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:28:39,723 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-10-19 22:28:39,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [722942482] [2020-10-19 22:28:39,723 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:28:39,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 7 [2020-10-19 22:28:39,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270234087] [2020-10-19 22:28:39,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:28:39,725 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:28:39,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:28:39,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:28:39,725 INFO L87 Difference]: Start difference. First operand 872 states and 1320 transitions. Second operand 7 states. [2020-10-19 22:28:51,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:28:51,369 INFO L93 Difference]: Finished difference Result 3288 states and 4998 transitions. [2020-10-19 22:28:51,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:28:51,370 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 127 [2020-10-19 22:28:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:28:51,386 INFO L225 Difference]: With dead ends: 3288 [2020-10-19 22:28:51,387 INFO L226 Difference]: Without dead ends: 2424 [2020-10-19 22:28:51,391 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 246 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:28:51,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2424 states. [2020-10-19 22:28:51,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2424 to 1046. [2020-10-19 22:28:51,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1046 states. [2020-10-19 22:28:51,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1046 states to 1046 states and 1620 transitions. [2020-10-19 22:28:51,459 INFO L78 Accepts]: Start accepts. Automaton has 1046 states and 1620 transitions. Word has length 127 [2020-10-19 22:28:51,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:28:51,460 INFO L481 AbstractCegarLoop]: Abstraction has 1046 states and 1620 transitions. [2020-10-19 22:28:51,460 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:28:51,460 INFO L276 IsEmpty]: Start isEmpty. Operand 1046 states and 1620 transitions. [2020-10-19 22:28:51,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-19 22:28:51,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:28:51,465 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:28:51,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-10-19 22:28:51,666 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:28:51,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:28:51,667 INFO L82 PathProgramCache]: Analyzing trace with hash -799556719, now seen corresponding path program 1 times [2020-10-19 22:28:51,669 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:28:51,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [107375570] [2020-10-19 22:28:51,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-10-19 22:28:52,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:28:52,118 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:28:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:28:52,498 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:28:52,805 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:28:52,805 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:28:53,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-10-19 22:28:53,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:28:53 BoogieIcfgContainer [2020-10-19 22:28:53,190 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:28:53,191 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:28:53,191 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:28:53,191 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:28:53,192 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:28:35" (3/4) ... [2020-10-19 22:28:53,194 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:28:53,337 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:28:53,337 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:28:53,338 INFO L168 Benchmark]: Toolchain (without parser) took 23370.36 ms. Allocated memory was 35.1 MB in the beginning and 101.7 MB in the end (delta: 66.6 MB). Free memory was 9.6 MB in the beginning and 28.4 MB in the end (delta: -18.8 MB). Peak memory consumption was 47.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,339 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.6 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,339 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1097.85 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 8.8 MB in the beginning and 14.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,340 INFO L168 Benchmark]: Boogie Procedure Inliner took 138.55 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 14.9 MB in the beginning and 24.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,340 INFO L168 Benchmark]: Boogie Preprocessor took 83.12 ms. Allocated memory is still 46.7 MB. Free memory was 24.3 MB in the beginning and 17.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,340 INFO L168 Benchmark]: RCFGBuilder took 3923.45 ms. Allocated memory was 46.7 MB in the beginning and 56.1 MB in the end (delta: 9.4 MB). Free memory was 16.8 MB in the beginning and 19.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,341 INFO L168 Benchmark]: TraceAbstraction took 17968.22 ms. Allocated memory was 56.1 MB in the beginning and 101.7 MB in the end (delta: 45.6 MB). Free memory was 19.5 MB in the beginning and 47.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 44.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,341 INFO L168 Benchmark]: Witness Printer took 146.34 ms. Allocated memory is still 101.7 MB. Free memory was 47.3 MB in the beginning and 28.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:28:53,344 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 33.6 MB. Free memory was 18.6 MB in the beginning and 18.6 MB in the end (delta: 41.9 kB). Peak memory consumption was 41.9 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 1097.85 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 8.8 MB in the beginning and 14.9 MB in the end (delta: -6.2 MB). Peak memory consumption was 8.7 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 138.55 ms. Allocated memory was 45.1 MB in the beginning and 46.7 MB in the end (delta: 1.6 MB). Free memory was 14.9 MB in the beginning and 24.3 MB in the end (delta: -9.3 MB). Peak memory consumption was 4.9 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 83.12 ms. Allocated memory is still 46.7 MB. Free memory was 24.3 MB in the beginning and 17.1 MB in the end (delta: 7.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3923.45 ms. Allocated memory was 46.7 MB in the beginning and 56.1 MB in the end (delta: 9.4 MB). Free memory was 16.8 MB in the beginning and 19.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 14.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 17968.22 ms. Allocated memory was 56.1 MB in the beginning and 101.7 MB in the end (delta: 45.6 MB). Free memory was 19.5 MB in the beginning and 47.3 MB in the end (delta: -27.8 MB). Peak memory consumption was 44.0 MB. Max. memory is 14.3 GB. * Witness Printer took 146.34 ms. Allocated memory is still 101.7 MB. Free memory was 47.3 MB in the beginning and 28.4 MB in the end (delta: 18.9 MB). Peak memory consumption was 18.9 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)) [L1082] BUF_MEM *buf ; [L1083] unsigned long l ; [L1084] unsigned long Time ; [L1085] unsigned long tmp ; [L1086] void (*cb)() ; [L1087] long num1 ; [L1088] int ret ; [L1089] int new_state ; [L1090] int state ; [L1091] int skip ; [L1092] int got_new_session ; [L1093] int tmp___1 = __VERIFIER_nondet_int() ; [L1094] int tmp___2 = __VERIFIER_nondet_int() ; [L1095] int tmp___3 = __VERIFIER_nondet_int() ; [L1096] int tmp___4 = __VERIFIER_nondet_int() ; [L1097] int tmp___5 = __VERIFIER_nondet_int() ; [L1098] int tmp___6 = __VERIFIER_nondet_int() ; [L1099] int tmp___7 ; [L1100] long tmp___8 = __VERIFIER_nondet_long() ; [L1101] int tmp___9 = __VERIFIER_nondet_int() ; [L1102] int tmp___10 = __VERIFIER_nondet_int() ; [L1103] int blastFlag ; [L1107] s->state = 8464 [L1108] blastFlag = 0 [L1109] s->hit=__VERIFIER_nondet_int () [L1110] s->state = 8464 [L1111] tmp = __VERIFIER_nondet_int() [L1112] Time = tmp [L1113] cb = (void (*)())((void *)0) [L1114] ret = -1 [L1115] skip = 0 [L1116] got_new_session = 0 [L1117] EXPR s->info_callback VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1117] COND TRUE (unsigned long )s->info_callback != (unsigned long )((void *)0) [L1118] EXPR s->info_callback [L1118] cb = s->info_callback [L1122] EXPR s->in_handshake [L1122] s->in_handshake += 1 [L1123] COND FALSE !(tmp___1 & 12288) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] EXPR s->cert VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1132] COND FALSE !((unsigned long )s->cert == (unsigned long )((void *)0)) [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND TRUE s->state == 8464 [L1325] s->shutdown = 0 [L1326] ret = __VERIFIER_nondet_int() [L1327] COND TRUE blastFlag == 0 [L1328] blastFlag = 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1332] COND FALSE !(ret <= 0) [L1337] got_new_session = 1 [L1338] s->state = 8496 [L1339] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND TRUE s->state == 8496 [L1343] ret = __VERIFIER_nondet_int() [L1344] COND TRUE blastFlag == 1 [L1345] blastFlag = 2 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1349] COND FALSE !(ret <= 0) [L1354] s->hit VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1354] COND FALSE !(s->hit) [L1357] s->state = 8512 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1359] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND TRUE s->state == 8512 [L1363] EXPR s->s3 [L1363] EXPR (s->s3)->tmp.new_cipher [L1363] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1363] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1366] ret = __VERIFIER_nondet_int() [L1367] COND TRUE blastFlag == 2 [L1368] blastFlag = 6 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1372] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1378] s->state = 8528 [L1379] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND TRUE s->state == 8528 [L1383] EXPR s->s3 [L1383] EXPR (s->s3)->tmp.new_cipher [L1383] EXPR ((s->s3)->tmp.new_cipher)->algorithms [L1383] l = ((s->s3)->tmp.new_cipher)->algorithms [L1384] EXPR s->options VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1384] COND TRUE s->options & 2097152UL [L1385] EXPR s->s3 [L1385] (s->s3)->tmp.use_rsa_tmp = 1 [L1389] EXPR s->s3 [L1389] (s->s3)->tmp.use_rsa_tmp VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1389] COND TRUE (s->s3)->tmp.use_rsa_tmp [L1407] ret = __VERIFIER_nondet_int() [L1408] COND TRUE blastFlag == 6 [L1409] blastFlag = 7 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1413] COND FALSE !(ret <= 0) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1430] s->state = 8544 [L1431] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] EXPR s->s3 [L1687] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1687] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1716] skip = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1138] COND TRUE 1 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1140] EXPR s->state [L1140] state = s->state [L1141] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1141] COND FALSE !(s->state == 12292) [L1144] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1144] COND FALSE !(s->state == 16384) [L1147] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1147] COND FALSE !(s->state == 8192) [L1150] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1150] COND FALSE !(s->state == 24576) [L1153] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1153] COND FALSE !(s->state == 8195) [L1156] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1156] COND FALSE !(s->state == 8480) [L1159] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1159] COND FALSE !(s->state == 8481) [L1162] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1162] COND FALSE !(s->state == 8482) [L1165] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1165] COND FALSE !(s->state == 8464) [L1168] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1168] COND FALSE !(s->state == 8465) [L1171] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1171] COND FALSE !(s->state == 8466) [L1174] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1174] COND FALSE !(s->state == 8496) [L1177] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1177] COND FALSE !(s->state == 8497) [L1180] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1180] COND FALSE !(s->state == 8512) [L1183] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1183] COND FALSE !(s->state == 8513) [L1186] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1186] COND FALSE !(s->state == 8528) [L1189] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1189] COND FALSE !(s->state == 8529) [L1192] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1192] COND TRUE s->state == 8544 [L1435] EXPR s->verify_mode VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1435] COND TRUE s->verify_mode & 1 [L1436] EXPR s->session [L1436] EXPR (s->session)->peer VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1436] COND FALSE !((unsigned long )(s->session)->peer != (unsigned long )((void *)0)) [L1446] EXPR s->s3 [L1446] EXPR (s->s3)->tmp.new_cipher [L1446] EXPR ((s->s3)->tmp.new_cipher)->algorithms VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1446] COND FALSE !(((s->s3)->tmp.new_cipher)->algorithms & 256UL) [L1456] EXPR s->s3 [L1456] (s->s3)->tmp.cert_request = 1 [L1457] ret = __VERIFIER_nondet_int() [L1458] COND TRUE blastFlag == 7 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.11.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 149 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.7s, OverallIterations: 5, TraceHistogramMax: 5, AutomataDifference: 13.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1143 SDtfs, 1401 SDslu, 1742 SDs, 0 SdLazy, 887 SolverSat, 152 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 642 GetRequests, 628 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1046occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 4 MinimizatonAttempts, 1382 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 451 NumberOfCodeBlocks, 451 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 640 ConstructedInterpolants, 0 QuantifiedInterpolants, 190428 SizeOfPredicates, 5 NumberOfNonLiveVariables, 929 ConjunctsInSsa, 10 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 506/506 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...