./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl/s3_srvr.blast.02.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.02.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 102517b0f8c706bb18ba594655c7ea5e5902e987 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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.02.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 102517b0f8c706bb18ba594655c7ea5e5902e987 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:26:48,506 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:26:48,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:26:48,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:26:48,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:26:48,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:26:48,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:26:48,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:26:48,575 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:26:48,579 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:26:48,581 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:26:48,582 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:26:48,582 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:26:48,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:26:48,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:26:48,592 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:26:48,594 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:26:48,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:26:48,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:26:48,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:26:48,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:26:48,612 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:26:48,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:26:48,615 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:26:48,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:26:48,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:26:48,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:26:48,634 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:26:48,635 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:26:48,635 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:26:48,636 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:26:48,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:26:48,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:26:48,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:26:48,638 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:26:48,639 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:26:48,639 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:26:48,639 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:26:48,640 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:26:48,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:26:48,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:26:48,642 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:26:48,669 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:26:48,669 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:26:48,671 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:26:48,672 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:26:48,672 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:26:48,672 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:26:48,673 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:26:48,673 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:26:48,673 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:26:48,673 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:26:48,674 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:26:48,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:26:48,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:26:48,676 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:26:48,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:26:48,676 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:26:48,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:26:48,677 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:26:48,678 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:26:48,678 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:26:48,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:26:48,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:26:48,679 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:26:48,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:26:48,680 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:26:48,680 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:26:48,680 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:26:48,680 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:26:48,681 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:26:48,681 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 -> 102517b0f8c706bb18ba594655c7ea5e5902e987 [2020-10-19 22:26:48,961 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:26:48,982 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:26:48,988 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:26:48,990 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:26:48,993 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:26:48,994 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-10-19 22:26:49,060 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de285fef8/3270839d0805486d8dc9c50cd44c493b/FLAG54b7bc11e [2020-10-19 22:26:49,730 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:26:49,731 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-10-19 22:26:49,751 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de285fef8/3270839d0805486d8dc9c50cd44c493b/FLAG54b7bc11e [2020-10-19 22:26:49,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/de285fef8/3270839d0805486d8dc9c50cd44c493b [2020-10-19 22:26:50,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:26:50,096 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:26:50,097 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:26:50,098 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:26:50,103 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:26:50,104 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:26:49" (1/1) ... [2020-10-19 22:26:50,108 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60ca2645 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:50, skipping insertion in model container [2020-10-19 22:26:50,109 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:26:49" (1/1) ... [2020-10-19 22:26:50,119 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:26:50,203 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:26:50,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:26:50,832 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:26:50,976 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:26:51,009 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:26:51,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51 WrapperNode [2020-10-19 22:26:51,011 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:26:51,012 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:26:51,012 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:26:51,013 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:26:51,023 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,162 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:26:51,163 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:26:51,163 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:26:51,163 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:26:51,177 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,184 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,230 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,245 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,252 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... [2020-10-19 22:26:51,265 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:26:51,269 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:26:51,269 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:26:51,269 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:26:51,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:26:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:26:51,387 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:26:51,388 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-19 22:26:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-19 22:26:51,389 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:26:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:26:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:26:51,390 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:26:51,405 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:26:51,796 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:26:52,652 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:26:52,652 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:26:52,664 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:26:52,665 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:26:52,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:26:52 BoogieIcfgContainer [2020-10-19 22:26:52,667 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:26:52,668 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:26:52,669 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:26:52,672 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:26:52,672 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:26:49" (1/3) ... [2020-10-19 22:26:52,673 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69790489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:26:52, skipping insertion in model container [2020-10-19 22:26:52,673 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:26:51" (2/3) ... [2020-10-19 22:26:52,674 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@69790489 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:26:52, skipping insertion in model container [2020-10-19 22:26:52,674 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:26:52" (3/3) ... [2020-10-19 22:26:52,676 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-1.c [2020-10-19 22:26:52,688 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:26:52,697 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:26:52,712 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:26:52,740 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:26:52,740 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:26:52,740 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:26:52,740 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:26:52,740 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:26:52,740 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:26:52,741 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:26:52,741 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:26:52,762 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-19 22:26:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:26:52,772 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:52,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:52,774 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:52,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:52,781 INFO L82 PathProgramCache]: Analyzing trace with hash 522836684, now seen corresponding path program 1 times [2020-10-19 22:26:52,792 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:52,792 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [72199070] [2020-10-19 22:26:52,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:53,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:53,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:53,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [72199070] [2020-10-19 22:26:53,223 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:53,224 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:53,225 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87629589] [2020-10-19 22:26:53,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:53,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:53,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:53,249 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:53,252 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-10-19 22:26:54,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:54,041 INFO L93 Difference]: Finished difference Result 314 states and 528 transitions. [2020-10-19 22:26:54,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:54,043 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:26:54,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:54,058 INFO L225 Difference]: With dead ends: 314 [2020-10-19 22:26:54,059 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:26:54,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:54,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:26:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 22:26:54,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:54,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 216 transitions. [2020-10-19 22:26:54,115 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 216 transitions. Word has length 45 [2020-10-19 22:26:54,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:54,116 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 216 transitions. [2020-10-19 22:26:54,116 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:54,116 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 216 transitions. [2020-10-19 22:26:54,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 22:26:54,119 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:54,120 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:54,120 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:26:54,120 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:54,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:54,121 INFO L82 PathProgramCache]: Analyzing trace with hash 968097209, now seen corresponding path program 1 times [2020-10-19 22:26:54,121 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:54,121 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [858898299] [2020-10-19 22:26:54,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:54,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:54,285 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:54,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [858898299] [2020-10-19 22:26:54,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:54,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:54,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065239560] [2020-10-19 22:26:54,288 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:54,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:54,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:54,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:54,290 INFO L87 Difference]: Start difference. First operand 141 states and 216 transitions. Second operand 4 states. [2020-10-19 22:26:54,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:54,764 INFO L93 Difference]: Finished difference Result 280 states and 423 transitions. [2020-10-19 22:26:54,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:54,765 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-10-19 22:26:54,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:54,767 INFO L225 Difference]: With dead ends: 280 [2020-10-19 22:26:54,767 INFO L226 Difference]: Without dead ends: 158 [2020-10-19 22:26:54,768 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:54,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-19 22:26:54,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 141. [2020-10-19 22:26:54,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:54,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 215 transitions. [2020-10-19 22:26:54,782 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 215 transitions. Word has length 58 [2020-10-19 22:26:54,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:54,783 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 215 transitions. [2020-10-19 22:26:54,783 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:54,783 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 215 transitions. [2020-10-19 22:26:54,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:26:54,786 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:54,786 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:54,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:26:54,786 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:54,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:54,787 INFO L82 PathProgramCache]: Analyzing trace with hash -461266997, now seen corresponding path program 1 times [2020-10-19 22:26:54,787 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:54,788 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546425701] [2020-10-19 22:26:54,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:54,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:54,882 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546425701] [2020-10-19 22:26:54,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:54,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:54,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994301573] [2020-10-19 22:26:54,888 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:54,889 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:54,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:54,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:54,891 INFO L87 Difference]: Start difference. First operand 141 states and 215 transitions. Second operand 4 states. [2020-10-19 22:26:55,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:55,408 INFO L93 Difference]: Finished difference Result 279 states and 421 transitions. [2020-10-19 22:26:55,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:55,409 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:26:55,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:55,412 INFO L225 Difference]: With dead ends: 279 [2020-10-19 22:26:55,412 INFO L226 Difference]: Without dead ends: 157 [2020-10-19 22:26:55,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:55,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-19 22:26:55,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 141. [2020-10-19 22:26:55,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:55,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 214 transitions. [2020-10-19 22:26:55,447 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 214 transitions. Word has length 59 [2020-10-19 22:26:55,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:55,447 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 214 transitions. [2020-10-19 22:26:55,447 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:55,448 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 214 transitions. [2020-10-19 22:26:55,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:26:55,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:55,454 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:55,455 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:26:55,455 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:55,456 INFO L82 PathProgramCache]: Analyzing trace with hash 881926454, now seen corresponding path program 1 times [2020-10-19 22:26:55,456 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:55,457 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985223005] [2020-10-19 22:26:55,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:55,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:55,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:55,620 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985223005] [2020-10-19 22:26:55,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:55,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:55,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874752874] [2020-10-19 22:26:55,622 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:55,622 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:55,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:55,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:55,623 INFO L87 Difference]: Start difference. First operand 141 states and 214 transitions. Second operand 4 states. [2020-10-19 22:26:56,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:56,038 INFO L93 Difference]: Finished difference Result 277 states and 418 transitions. [2020-10-19 22:26:56,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:56,039 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:26:56,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:56,041 INFO L225 Difference]: With dead ends: 277 [2020-10-19 22:26:56,041 INFO L226 Difference]: Without dead ends: 155 [2020-10-19 22:26:56,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:56,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-19 22:26:56,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 141. [2020-10-19 22:26:56,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:56,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 213 transitions. [2020-10-19 22:26:56,052 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 213 transitions. Word has length 59 [2020-10-19 22:26:56,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:56,053 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 213 transitions. [2020-10-19 22:26:56,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:56,053 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 213 transitions. [2020-10-19 22:26:56,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:26:56,055 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:56,055 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:56,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:26:56,056 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:56,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:56,056 INFO L82 PathProgramCache]: Analyzing trace with hash 1831274614, now seen corresponding path program 1 times [2020-10-19 22:26:56,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:56,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1427561019] [2020-10-19 22:26:56,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:56,164 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:56,164 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1427561019] [2020-10-19 22:26:56,165 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:56,165 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:56,165 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112369966] [2020-10-19 22:26:56,166 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:56,166 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:56,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:56,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:56,166 INFO L87 Difference]: Start difference. First operand 141 states and 213 transitions. Second operand 4 states. [2020-10-19 22:26:56,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:56,576 INFO L93 Difference]: Finished difference Result 276 states and 416 transitions. [2020-10-19 22:26:56,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:56,577 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:26:56,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:56,579 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:26:56,579 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:26:56,580 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:56,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:26:56,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:26:56,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:56,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 212 transitions. [2020-10-19 22:26:56,590 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 212 transitions. Word has length 59 [2020-10-19 22:26:56,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:56,590 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 212 transitions. [2020-10-19 22:26:56,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:56,591 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 212 transitions. [2020-10-19 22:26:56,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:26:56,592 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:56,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:56,593 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:26:56,593 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:56,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:56,594 INFO L82 PathProgramCache]: Analyzing trace with hash 376743775, now seen corresponding path program 1 times [2020-10-19 22:26:56,594 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:56,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395429277] [2020-10-19 22:26:56,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:56,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:56,728 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:56,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395429277] [2020-10-19 22:26:56,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:56,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:56,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712667116] [2020-10-19 22:26:56,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:56,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:56,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:56,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:56,731 INFO L87 Difference]: Start difference. First operand 141 states and 212 transitions. Second operand 4 states. [2020-10-19 22:26:57,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:57,129 INFO L93 Difference]: Finished difference Result 276 states and 415 transitions. [2020-10-19 22:26:57,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:57,130 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 59 [2020-10-19 22:26:57,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:57,131 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:26:57,131 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:26:57,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:26:57,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:26:57,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:57,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 211 transitions. [2020-10-19 22:26:57,139 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 211 transitions. Word has length 59 [2020-10-19 22:26:57,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:57,139 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 211 transitions. [2020-10-19 22:26:57,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:57,139 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 211 transitions. [2020-10-19 22:26:57,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-19 22:26:57,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:57,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:57,141 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:26:57,141 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:57,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:57,141 INFO L82 PathProgramCache]: Analyzing trace with hash 1718254146, now seen corresponding path program 1 times [2020-10-19 22:26:57,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:57,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [232847000] [2020-10-19 22:26:57,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:57,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:57,368 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:57,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [232847000] [2020-10-19 22:26:57,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:57,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:57,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433585128] [2020-10-19 22:26:57,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:57,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:57,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:57,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:57,371 INFO L87 Difference]: Start difference. First operand 141 states and 211 transitions. Second operand 4 states. [2020-10-19 22:26:57,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:57,792 INFO L93 Difference]: Finished difference Result 276 states and 414 transitions. [2020-10-19 22:26:57,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:57,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-19 22:26:57,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:57,794 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:26:57,794 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:26:57,795 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:57,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:26:57,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:26:57,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:57,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 210 transitions. [2020-10-19 22:26:57,801 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 210 transitions. Word has length 60 [2020-10-19 22:26:57,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:57,801 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 210 transitions. [2020-10-19 22:26:57,801 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:57,801 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 210 transitions. [2020-10-19 22:26:57,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-19 22:26:57,802 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:57,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:57,803 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:26:57,803 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:57,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:57,803 INFO L82 PathProgramCache]: Analyzing trace with hash 316605892, now seen corresponding path program 1 times [2020-10-19 22:26:57,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:57,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860502471] [2020-10-19 22:26:57,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:57,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:57,858 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:57,858 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860502471] [2020-10-19 22:26:57,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:57,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:57,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307887558] [2020-10-19 22:26:57,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:57,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:57,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:57,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:57,860 INFO L87 Difference]: Start difference. First operand 141 states and 210 transitions. Second operand 4 states. [2020-10-19 22:26:58,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:58,279 INFO L93 Difference]: Finished difference Result 276 states and 413 transitions. [2020-10-19 22:26:58,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:58,280 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-19 22:26:58,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:58,282 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:26:58,282 INFO L226 Difference]: Without dead ends: 154 [2020-10-19 22:26:58,283 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:58,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-19 22:26:58,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 141. [2020-10-19 22:26:58,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:58,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 209 transitions. [2020-10-19 22:26:58,288 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 209 transitions. Word has length 61 [2020-10-19 22:26:58,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:58,289 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 209 transitions. [2020-10-19 22:26:58,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:58,289 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 209 transitions. [2020-10-19 22:26:58,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:26:58,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:58,290 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:58,290 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:26:58,290 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:58,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:58,291 INFO L82 PathProgramCache]: Analyzing trace with hash -223613817, now seen corresponding path program 1 times [2020-10-19 22:26:58,291 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:58,291 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [757445956] [2020-10-19 22:26:58,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:58,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:58,360 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:58,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [757445956] [2020-10-19 22:26:58,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:58,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:58,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1274411691] [2020-10-19 22:26:58,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:58,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:58,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:58,363 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:58,363 INFO L87 Difference]: Start difference. First operand 141 states and 209 transitions. Second operand 4 states. [2020-10-19 22:26:58,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:58,720 INFO L93 Difference]: Finished difference Result 266 states and 399 transitions. [2020-10-19 22:26:58,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:58,720 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:26:58,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:58,722 INFO L225 Difference]: With dead ends: 266 [2020-10-19 22:26:58,722 INFO L226 Difference]: Without dead ends: 144 [2020-10-19 22:26:58,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:58,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-10-19 22:26:58,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 141. [2020-10-19 22:26:58,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-10-19 22:26:58,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 208 transitions. [2020-10-19 22:26:58,732 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 208 transitions. Word has length 62 [2020-10-19 22:26:58,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:58,733 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 208 transitions. [2020-10-19 22:26:58,733 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:58,733 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 208 transitions. [2020-10-19 22:26:58,734 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:26:58,734 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:58,734 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:58,735 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:26:58,736 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:58,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:58,737 INFO L82 PathProgramCache]: Analyzing trace with hash 176537583, now seen corresponding path program 1 times [2020-10-19 22:26:58,737 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:58,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208090104] [2020-10-19 22:26:58,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:58,859 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:58,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208090104] [2020-10-19 22:26:58,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:58,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:58,869 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284469047] [2020-10-19 22:26:58,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:58,870 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:58,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:58,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:58,870 INFO L87 Difference]: Start difference. First operand 141 states and 208 transitions. Second operand 4 states. [2020-10-19 22:26:59,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:26:59,429 INFO L93 Difference]: Finished difference Result 307 states and 462 transitions. [2020-10-19 22:26:59,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:26:59,430 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 62 [2020-10-19 22:26:59,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:26:59,432 INFO L225 Difference]: With dead ends: 307 [2020-10-19 22:26:59,432 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:26:59,433 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:26:59,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:26:59,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 163. [2020-10-19 22:26:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:26:59,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 246 transitions. [2020-10-19 22:26:59,441 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 246 transitions. Word has length 62 [2020-10-19 22:26:59,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:26:59,442 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 246 transitions. [2020-10-19 22:26:59,442 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:26:59,442 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 246 transitions. [2020-10-19 22:26:59,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 22:26:59,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:26:59,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:26:59,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:26:59,445 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:26:59,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:26:59,446 INFO L82 PathProgramCache]: Analyzing trace with hash 551995766, now seen corresponding path program 1 times [2020-10-19 22:26:59,447 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:26:59,447 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332499533] [2020-10-19 22:26:59,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:26:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:26:59,522 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:26:59,522 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332499533] [2020-10-19 22:26:59,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:26:59,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:26:59,524 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327664647] [2020-10-19 22:26:59,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:26:59,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:26:59,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:26:59,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:26:59,526 INFO L87 Difference]: Start difference. First operand 163 states and 246 transitions. Second operand 4 states. [2020-10-19 22:27:00,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:00,127 INFO L93 Difference]: Finished difference Result 329 states and 499 transitions. [2020-10-19 22:27:00,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:00,128 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 75 [2020-10-19 22:27:00,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:00,130 INFO L225 Difference]: With dead ends: 329 [2020-10-19 22:27:00,130 INFO L226 Difference]: Without dead ends: 185 [2020-10-19 22:27:00,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:00,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-19 22:27:00,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 163. [2020-10-19 22:27:00,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:00,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 245 transitions. [2020-10-19 22:27:00,137 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 245 transitions. Word has length 75 [2020-10-19 22:27:00,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:00,138 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 245 transitions. [2020-10-19 22:27:00,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:00,138 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 245 transitions. [2020-10-19 22:27:00,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:00,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:00,140 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:00,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:27:00,141 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:00,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:00,141 INFO L82 PathProgramCache]: Analyzing trace with hash -475509842, now seen corresponding path program 1 times [2020-10-19 22:27:00,142 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:00,142 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912681470] [2020-10-19 22:27:00,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:00,196 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 22:27:00,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912681470] [2020-10-19 22:27:00,198 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:00,198 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:00,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987785434] [2020-10-19 22:27:00,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:00,199 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:00,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:00,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:00,201 INFO L87 Difference]: Start difference. First operand 163 states and 245 transitions. Second operand 4 states. [2020-10-19 22:27:00,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:00,611 INFO L93 Difference]: Finished difference Result 328 states and 496 transitions. [2020-10-19 22:27:00,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:00,612 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:00,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:00,613 INFO L225 Difference]: With dead ends: 328 [2020-10-19 22:27:00,614 INFO L226 Difference]: Without dead ends: 184 [2020-10-19 22:27:00,615 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:00,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-10-19 22:27:00,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 163. [2020-10-19 22:27:00,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:00,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 244 transitions. [2020-10-19 22:27:00,621 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 244 transitions. Word has length 76 [2020-10-19 22:27:00,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:00,622 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 244 transitions. [2020-10-19 22:27:00,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:00,622 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 244 transitions. [2020-10-19 22:27:00,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:00,623 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:00,623 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:00,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:27:00,624 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:00,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:00,624 INFO L82 PathProgramCache]: Analyzing trace with hash 867683609, now seen corresponding path program 1 times [2020-10-19 22:27:00,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:00,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747397290] [2020-10-19 22:27:00,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:00,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:00,685 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 22:27:00,686 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747397290] [2020-10-19 22:27:00,686 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:00,686 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:00,686 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169118096] [2020-10-19 22:27:00,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:00,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:00,687 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:00,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:00,688 INFO L87 Difference]: Start difference. First operand 163 states and 244 transitions. Second operand 4 states. [2020-10-19 22:27:01,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:01,103 INFO L93 Difference]: Finished difference Result 326 states and 492 transitions. [2020-10-19 22:27:01,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:01,105 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:01,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:01,108 INFO L225 Difference]: With dead ends: 326 [2020-10-19 22:27:01,108 INFO L226 Difference]: Without dead ends: 182 [2020-10-19 22:27:01,109 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:01,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-10-19 22:27:01,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 163. [2020-10-19 22:27:01,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:01,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 243 transitions. [2020-10-19 22:27:01,126 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 243 transitions. Word has length 76 [2020-10-19 22:27:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:01,128 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 243 transitions. [2020-10-19 22:27:01,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 243 transitions. [2020-10-19 22:27:01,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:01,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:01,131 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:01,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:27:01,132 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:01,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:01,133 INFO L82 PathProgramCache]: Analyzing trace with hash 1817031769, now seen corresponding path program 1 times [2020-10-19 22:27:01,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:01,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1276185465] [2020-10-19 22:27:01,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:01,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:01,228 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 22:27:01,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1276185465] [2020-10-19 22:27:01,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:01,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:01,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569667019] [2020-10-19 22:27:01,231 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:01,231 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:01,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:01,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:01,232 INFO L87 Difference]: Start difference. First operand 163 states and 243 transitions. Second operand 4 states. [2020-10-19 22:27:01,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:01,663 INFO L93 Difference]: Finished difference Result 325 states and 489 transitions. [2020-10-19 22:27:01,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:01,664 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:01,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:01,666 INFO L225 Difference]: With dead ends: 325 [2020-10-19 22:27:01,666 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:27:01,667 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:01,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:27:01,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-10-19 22:27:01,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:01,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 242 transitions. [2020-10-19 22:27:01,674 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 242 transitions. Word has length 76 [2020-10-19 22:27:01,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:01,675 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 242 transitions. [2020-10-19 22:27:01,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:01,675 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 242 transitions. [2020-10-19 22:27:01,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-19 22:27:01,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:01,676 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:01,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:27:01,677 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:01,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:01,677 INFO L82 PathProgramCache]: Analyzing trace with hash 362500930, now seen corresponding path program 1 times [2020-10-19 22:27:01,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:01,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563490444] [2020-10-19 22:27:01,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:01,731 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 22:27:01,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563490444] [2020-10-19 22:27:01,733 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:01,733 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:01,733 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1195709107] [2020-10-19 22:27:01,734 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:01,734 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:01,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:01,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:01,736 INFO L87 Difference]: Start difference. First operand 163 states and 242 transitions. Second operand 4 states. [2020-10-19 22:27:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:02,155 INFO L93 Difference]: Finished difference Result 325 states and 487 transitions. [2020-10-19 22:27:02,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:02,156 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 76 [2020-10-19 22:27:02,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:02,157 INFO L225 Difference]: With dead ends: 325 [2020-10-19 22:27:02,158 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:27:02,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:02,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:27:02,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-10-19 22:27:02,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:02,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 241 transitions. [2020-10-19 22:27:02,165 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 241 transitions. Word has length 76 [2020-10-19 22:27:02,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:02,166 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 241 transitions. [2020-10-19 22:27:02,166 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:02,166 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 241 transitions. [2020-10-19 22:27:02,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-10-19 22:27:02,167 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:02,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:02,168 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:27:02,168 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:02,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:02,169 INFO L82 PathProgramCache]: Analyzing trace with hash 1276725951, now seen corresponding path program 1 times [2020-10-19 22:27:02,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:02,170 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1698253143] [2020-10-19 22:27:02,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:02,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:02,227 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 22:27:02,227 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1698253143] [2020-10-19 22:27:02,228 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:02,228 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:02,228 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580017006] [2020-10-19 22:27:02,229 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:02,229 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:02,230 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:02,230 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:02,230 INFO L87 Difference]: Start difference. First operand 163 states and 241 transitions. Second operand 4 states. [2020-10-19 22:27:02,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:02,686 INFO L93 Difference]: Finished difference Result 325 states and 485 transitions. [2020-10-19 22:27:02,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:02,687 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 77 [2020-10-19 22:27:02,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:02,689 INFO L225 Difference]: With dead ends: 325 [2020-10-19 22:27:02,689 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:27:02,690 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:02,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:27:02,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-10-19 22:27:02,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:02,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 240 transitions. [2020-10-19 22:27:02,706 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 240 transitions. Word has length 77 [2020-10-19 22:27:02,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:02,707 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 240 transitions. [2020-10-19 22:27:02,707 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:02,707 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 240 transitions. [2020-10-19 22:27:02,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-19 22:27:02,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:02,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:02,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:27:02,710 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:02,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:02,710 INFO L82 PathProgramCache]: Analyzing trace with hash -485866265, now seen corresponding path program 1 times [2020-10-19 22:27:02,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:02,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1467393322] [2020-10-19 22:27:02,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:02,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:02,762 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 22:27:02,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1467393322] [2020-10-19 22:27:02,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:02,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:02,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461787573] [2020-10-19 22:27:02,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:02,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:02,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:02,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:02,766 INFO L87 Difference]: Start difference. First operand 163 states and 240 transitions. Second operand 4 states. [2020-10-19 22:27:03,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:03,193 INFO L93 Difference]: Finished difference Result 325 states and 483 transitions. [2020-10-19 22:27:03,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:03,194 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-10-19 22:27:03,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:03,197 INFO L225 Difference]: With dead ends: 325 [2020-10-19 22:27:03,197 INFO L226 Difference]: Without dead ends: 181 [2020-10-19 22:27:03,198 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:03,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-19 22:27:03,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 163. [2020-10-19 22:27:03,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:03,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 239 transitions. [2020-10-19 22:27:03,205 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 239 transitions. Word has length 78 [2020-10-19 22:27:03,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:03,205 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 239 transitions. [2020-10-19 22:27:03,205 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:03,206 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 239 transitions. [2020-10-19 22:27:03,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-19 22:27:03,207 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:03,207 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:03,207 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:27:03,208 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:03,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:03,208 INFO L82 PathProgramCache]: Analyzing trace with hash 669553092, now seen corresponding path program 1 times [2020-10-19 22:27:03,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:03,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383059036] [2020-10-19 22:27:03,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:03,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:03,282 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 22:27:03,282 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383059036] [2020-10-19 22:27:03,283 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:03,283 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:03,283 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355324878] [2020-10-19 22:27:03,283 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:03,283 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:03,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:03,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:03,284 INFO L87 Difference]: Start difference. First operand 163 states and 239 transitions. Second operand 4 states. [2020-10-19 22:27:03,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:03,660 INFO L93 Difference]: Finished difference Result 315 states and 468 transitions. [2020-10-19 22:27:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:03,661 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 79 [2020-10-19 22:27:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:03,662 INFO L225 Difference]: With dead ends: 315 [2020-10-19 22:27:03,663 INFO L226 Difference]: Without dead ends: 171 [2020-10-19 22:27:03,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:03,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-19 22:27:03,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 163. [2020-10-19 22:27:03,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-10-19 22:27:03,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 238 transitions. [2020-10-19 22:27:03,670 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 238 transitions. Word has length 79 [2020-10-19 22:27:03,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:03,670 INFO L481 AbstractCegarLoop]: Abstraction has 163 states and 238 transitions. [2020-10-19 22:27:03,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:03,671 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 238 transitions. [2020-10-19 22:27:03,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:03,672 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:03,672 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:03,672 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:27:03,673 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:03,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:03,673 INFO L82 PathProgramCache]: Analyzing trace with hash 719124867, now seen corresponding path program 1 times [2020-10-19 22:27:03,673 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:03,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949018243] [2020-10-19 22:27:03,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:03,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:03,798 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:03,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949018243] [2020-10-19 22:27:03,799 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:03,799 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:03,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419416539] [2020-10-19 22:27:03,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:03,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:03,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:03,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:03,803 INFO L87 Difference]: Start difference. First operand 163 states and 238 transitions. Second operand 4 states. [2020-10-19 22:27:04,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:04,541 INFO L93 Difference]: Finished difference Result 403 states and 603 transitions. [2020-10-19 22:27:04,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:04,543 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:04,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:04,545 INFO L225 Difference]: With dead ends: 403 [2020-10-19 22:27:04,545 INFO L226 Difference]: Without dead ends: 259 [2020-10-19 22:27:04,546 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:04,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2020-10-19 22:27:04,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 206. [2020-10-19 22:27:04,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-19 22:27:04,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 316 transitions. [2020-10-19 22:27:04,556 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 316 transitions. Word has length 84 [2020-10-19 22:27:04,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:04,557 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 316 transitions. [2020-10-19 22:27:04,557 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:04,558 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 316 transitions. [2020-10-19 22:27:04,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:27:04,559 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:04,560 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:04,560 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:27:04,561 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:04,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:04,561 INFO L82 PathProgramCache]: Analyzing trace with hash -178268411, now seen corresponding path program 1 times [2020-10-19 22:27:04,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:04,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688016330] [2020-10-19 22:27:04,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:04,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:04,643 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:04,644 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688016330] [2020-10-19 22:27:04,645 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:04,645 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:04,645 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550151447] [2020-10-19 22:27:04,646 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:04,646 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:04,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:04,647 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:04,647 INFO L87 Difference]: Start difference. First operand 206 states and 316 transitions. Second operand 4 states. [2020-10-19 22:27:05,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:05,165 INFO L93 Difference]: Finished difference Result 443 states and 687 transitions. [2020-10-19 22:27:05,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:05,166 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 84 [2020-10-19 22:27:05,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:05,168 INFO L225 Difference]: With dead ends: 443 [2020-10-19 22:27:05,168 INFO L226 Difference]: Without dead ends: 256 [2020-10-19 22:27:05,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:05,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-19 22:27:05,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 230. [2020-10-19 22:27:05,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:05,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 358 transitions. [2020-10-19 22:27:05,177 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 358 transitions. Word has length 84 [2020-10-19 22:27:05,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:05,177 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 358 transitions. [2020-10-19 22:27:05,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:05,178 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 358 transitions. [2020-10-19 22:27:05,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:05,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:05,179 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:05,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:27:05,180 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:05,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:05,180 INFO L82 PathProgramCache]: Analyzing trace with hash 2081210466, now seen corresponding path program 1 times [2020-10-19 22:27:05,181 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:05,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1906563904] [2020-10-19 22:27:05,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:05,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:05,277 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1906563904] [2020-10-19 22:27:05,277 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:05,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:05,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487772613] [2020-10-19 22:27:05,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:05,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:05,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:05,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:05,283 INFO L87 Difference]: Start difference. First operand 230 states and 358 transitions. Second operand 4 states. [2020-10-19 22:27:06,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:06,027 INFO L93 Difference]: Finished difference Result 494 states and 764 transitions. [2020-10-19 22:27:06,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:06,028 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:06,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:06,030 INFO L225 Difference]: With dead ends: 494 [2020-10-19 22:27:06,030 INFO L226 Difference]: Without dead ends: 283 [2020-10-19 22:27:06,031 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:06,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2020-10-19 22:27:06,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 230. [2020-10-19 22:27:06,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:06,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 357 transitions. [2020-10-19 22:27:06,039 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 357 transitions. Word has length 97 [2020-10-19 22:27:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:06,040 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 357 transitions. [2020-10-19 22:27:06,040 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:06,040 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 357 transitions. [2020-10-19 22:27:06,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-19 22:27:06,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:06,042 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:06,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:27:06,042 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:06,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:06,043 INFO L82 PathProgramCache]: Analyzing trace with hash 2121885216, now seen corresponding path program 1 times [2020-10-19 22:27:06,044 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:06,045 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372457064] [2020-10-19 22:27:06,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:06,156 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:06,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372457064] [2020-10-19 22:27:06,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:06,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:06,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023905149] [2020-10-19 22:27:06,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:06,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:06,158 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:06,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:06,159 INFO L87 Difference]: Start difference. First operand 230 states and 357 transitions. Second operand 4 states. [2020-10-19 22:27:06,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:06,599 INFO L93 Difference]: Finished difference Result 467 states and 726 transitions. [2020-10-19 22:27:06,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:06,602 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 97 [2020-10-19 22:27:06,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:06,604 INFO L225 Difference]: With dead ends: 467 [2020-10-19 22:27:06,604 INFO L226 Difference]: Without dead ends: 256 [2020-10-19 22:27:06,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:06,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-10-19 22:27:06,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 230. [2020-10-19 22:27:06,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:06,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 356 transitions. [2020-10-19 22:27:06,612 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 356 transitions. Word has length 97 [2020-10-19 22:27:06,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:06,612 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 356 transitions. [2020-10-19 22:27:06,612 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:06,612 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 356 transitions. [2020-10-19 22:27:06,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:06,614 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:06,614 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:06,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:27:06,614 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:06,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:06,615 INFO L82 PathProgramCache]: Analyzing trace with hash -314494398, now seen corresponding path program 1 times [2020-10-19 22:27:06,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:06,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649688086] [2020-10-19 22:27:06,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:06,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:06,697 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:06,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649688086] [2020-10-19 22:27:06,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:06,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:06,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216008158] [2020-10-19 22:27:06,698 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:06,698 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:06,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:06,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:06,699 INFO L87 Difference]: Start difference. First operand 230 states and 356 transitions. Second operand 4 states. [2020-10-19 22:27:07,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:07,344 INFO L93 Difference]: Finished difference Result 493 states and 759 transitions. [2020-10-19 22:27:07,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:07,345 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:07,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:07,347 INFO L225 Difference]: With dead ends: 493 [2020-10-19 22:27:07,347 INFO L226 Difference]: Without dead ends: 282 [2020-10-19 22:27:07,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:07,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-10-19 22:27:07,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 230. [2020-10-19 22:27:07,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:07,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 355 transitions. [2020-10-19 22:27:07,356 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 355 transitions. Word has length 98 [2020-10-19 22:27:07,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:07,357 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 355 transitions. [2020-10-19 22:27:07,357 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:07,357 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 355 transitions. [2020-10-19 22:27:07,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:07,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:07,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:07,359 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:27:07,359 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:07,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:07,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1028699053, now seen corresponding path program 1 times [2020-10-19 22:27:07,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:07,360 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747664112] [2020-10-19 22:27:07,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:07,457 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:07,457 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747664112] [2020-10-19 22:27:07,457 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:07,458 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:07,458 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121623639] [2020-10-19 22:27:07,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:07,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:07,462 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:07,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:07,462 INFO L87 Difference]: Start difference. First operand 230 states and 355 transitions. Second operand 4 states. [2020-10-19 22:27:07,998 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:07,999 INFO L93 Difference]: Finished difference Result 491 states and 755 transitions. [2020-10-19 22:27:08,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:08,001 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:08,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:08,003 INFO L225 Difference]: With dead ends: 491 [2020-10-19 22:27:08,003 INFO L226 Difference]: Without dead ends: 280 [2020-10-19 22:27:08,004 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:08,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 280 states. [2020-10-19 22:27:08,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 280 to 230. [2020-10-19 22:27:08,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:08,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 354 transitions. [2020-10-19 22:27:08,015 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 354 transitions. Word has length 98 [2020-10-19 22:27:08,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:08,015 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 354 transitions. [2020-10-19 22:27:08,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:08,016 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 354 transitions. [2020-10-19 22:27:08,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:08,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:08,017 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:08,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:27:08,019 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:08,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:08,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1978047213, now seen corresponding path program 1 times [2020-10-19 22:27:08,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:08,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989725745] [2020-10-19 22:27:08,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:08,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:08,096 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989725745] [2020-10-19 22:27:08,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:08,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:08,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210976722] [2020-10-19 22:27:08,097 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:08,097 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:08,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:08,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:08,098 INFO L87 Difference]: Start difference. First operand 230 states and 354 transitions. Second operand 4 states. [2020-10-19 22:27:08,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:08,599 INFO L93 Difference]: Finished difference Result 490 states and 752 transitions. [2020-10-19 22:27:08,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:08,600 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:08,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:08,603 INFO L225 Difference]: With dead ends: 490 [2020-10-19 22:27:08,603 INFO L226 Difference]: Without dead ends: 279 [2020-10-19 22:27:08,604 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:08,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 279 states. [2020-10-19 22:27:08,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 279 to 230. [2020-10-19 22:27:08,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 230 states. [2020-10-19 22:27:08,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 353 transitions. [2020-10-19 22:27:08,610 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 353 transitions. Word has length 98 [2020-10-19 22:27:08,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:08,611 INFO L481 AbstractCegarLoop]: Abstraction has 230 states and 353 transitions. [2020-10-19 22:27:08,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:08,611 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 353 transitions. [2020-10-19 22:27:08,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:08,612 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:08,612 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:08,612 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:27:08,612 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:08,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:08,613 INFO L82 PathProgramCache]: Analyzing trace with hash 523516374, now seen corresponding path program 1 times [2020-10-19 22:27:08,613 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:08,613 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71131761] [2020-10-19 22:27:08,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:08,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:08,701 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-19 22:27:08,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71131761] [2020-10-19 22:27:08,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:08,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:27:08,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78148761] [2020-10-19 22:27:08,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:27:08,702 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:08,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:27:08,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:08,703 INFO L87 Difference]: Start difference. First operand 230 states and 353 transitions. Second operand 5 states. [2020-10-19 22:27:09,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:09,232 INFO L93 Difference]: Finished difference Result 462 states and 714 transitions. [2020-10-19 22:27:09,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:27:09,233 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 98 [2020-10-19 22:27:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:09,235 INFO L225 Difference]: With dead ends: 462 [2020-10-19 22:27:09,235 INFO L226 Difference]: Without dead ends: 251 [2020-10-19 22:27:09,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:27:09,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-10-19 22:27:09,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 250. [2020-10-19 22:27:09,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:09,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 379 transitions. [2020-10-19 22:27:09,244 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 379 transitions. Word has length 98 [2020-10-19 22:27:09,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:09,244 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 379 transitions. [2020-10-19 22:27:09,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:27:09,244 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 379 transitions. [2020-10-19 22:27:09,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:09,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,246 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:09,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:27:09,246 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,247 INFO L82 PathProgramCache]: Analyzing trace with hash -2005350993, now seen corresponding path program 1 times [2020-10-19 22:27:09,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788788753] [2020-10-19 22:27:09,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:09,317 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 61 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:09,318 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788788753] [2020-10-19 22:27:09,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:09,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:09,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152218803] [2020-10-19 22:27:09,319 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:09,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:09,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:09,319 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:09,319 INFO L87 Difference]: Start difference. First operand 250 states and 379 transitions. Second operand 4 states. [2020-10-19 22:27:09,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:09,723 INFO L93 Difference]: Finished difference Result 504 states and 766 transitions. [2020-10-19 22:27:09,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:09,724 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:09,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:09,726 INFO L225 Difference]: With dead ends: 504 [2020-10-19 22:27:09,726 INFO L226 Difference]: Without dead ends: 273 [2020-10-19 22:27:09,727 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-10-19 22:27:09,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 250. [2020-10-19 22:27:09,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:09,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 378 transitions. [2020-10-19 22:27:09,735 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 378 transitions. Word has length 98 [2020-10-19 22:27:09,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:09,736 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 378 transitions. [2020-10-19 22:27:09,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:09,736 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 378 transitions. [2020-10-19 22:27:09,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-19 22:27:09,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:09,737 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:09,737 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-19 22:27:09,737 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:09,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:09,738 INFO L82 PathProgramCache]: Analyzing trace with hash -1056002833, now seen corresponding path program 1 times [2020-10-19 22:27:09,738 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:09,738 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354118137] [2020-10-19 22:27:09,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:09,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:09,805 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:09,805 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354118137] [2020-10-19 22:27:09,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:09,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:09,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988935763] [2020-10-19 22:27:09,806 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:09,806 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:09,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:09,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:09,807 INFO L87 Difference]: Start difference. First operand 250 states and 378 transitions. Second operand 4 states. [2020-10-19 22:27:10,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:10,207 INFO L93 Difference]: Finished difference Result 503 states and 763 transitions. [2020-10-19 22:27:10,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:10,208 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 98 [2020-10-19 22:27:10,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:10,210 INFO L225 Difference]: With dead ends: 503 [2020-10-19 22:27:10,210 INFO L226 Difference]: Without dead ends: 272 [2020-10-19 22:27:10,211 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:10,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-19 22:27:10,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-10-19 22:27:10,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:10,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 377 transitions. [2020-10-19 22:27:10,219 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 377 transitions. Word has length 98 [2020-10-19 22:27:10,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:10,219 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 377 transitions. [2020-10-19 22:27:10,219 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:10,219 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 377 transitions. [2020-10-19 22:27:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:10,220 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:10,220 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:10,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-19 22:27:10,221 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:10,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1449434210, now seen corresponding path program 1 times [2020-10-19 22:27:10,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:10,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942664920] [2020-10-19 22:27:10,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,295 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:10,296 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942664920] [2020-10-19 22:27:10,296 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,296 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:10,296 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496033235] [2020-10-19 22:27:10,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:10,297 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:10,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:10,298 INFO L87 Difference]: Start difference. First operand 250 states and 377 transitions. Second operand 4 states. [2020-10-19 22:27:10,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:10,852 INFO L93 Difference]: Finished difference Result 530 states and 797 transitions. [2020-10-19 22:27:10,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:10,853 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:27:10,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:10,855 INFO L225 Difference]: With dead ends: 530 [2020-10-19 22:27:10,855 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:27:10,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:10,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:27:10,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-10-19 22:27:10,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:10,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 376 transitions. [2020-10-19 22:27:10,863 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 376 transitions. Word has length 99 [2020-10-19 22:27:10,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:10,864 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 376 transitions. [2020-10-19 22:27:10,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:10,864 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 376 transitions. [2020-10-19 22:27:10,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-19 22:27:10,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:10,865 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:10,865 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-19 22:27:10,865 INFO L429 AbstractCegarLoop]: === Iteration 30 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:10,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:10,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1015705124, now seen corresponding path program 1 times [2020-10-19 22:27:10,866 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:10,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1197832619] [2020-10-19 22:27:10,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:10,930 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:10,930 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1197832619] [2020-10-19 22:27:10,931 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:10,931 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:10,931 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609411923] [2020-10-19 22:27:10,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:10,932 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:10,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:10,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:10,932 INFO L87 Difference]: Start difference. First operand 250 states and 376 transitions. Second operand 4 states. [2020-10-19 22:27:11,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,339 INFO L93 Difference]: Finished difference Result 503 states and 759 transitions. [2020-10-19 22:27:11,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:11,340 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 99 [2020-10-19 22:27:11,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,342 INFO L225 Difference]: With dead ends: 503 [2020-10-19 22:27:11,342 INFO L226 Difference]: Without dead ends: 272 [2020-10-19 22:27:11,342 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:11,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-19 22:27:11,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-10-19 22:27:11,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:11,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 375 transitions. [2020-10-19 22:27:11,349 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 375 transitions. Word has length 99 [2020-10-19 22:27:11,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,350 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 375 transitions. [2020-10-19 22:27:11,350 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:11,350 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 375 transitions. [2020-10-19 22:27:11,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:11,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,358 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:11,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-19 22:27:11,358 INFO L429 AbstractCegarLoop]: === Iteration 31 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,359 INFO L82 PathProgramCache]: Analyzing trace with hash 542245225, now seen corresponding path program 1 times [2020-10-19 22:27:11,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [669105068] [2020-10-19 22:27:11,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:11,420 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:11,420 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [669105068] [2020-10-19 22:27:11,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:11,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:11,421 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337178326] [2020-10-19 22:27:11,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:11,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:11,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:11,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:11,422 INFO L87 Difference]: Start difference. First operand 250 states and 375 transitions. Second operand 4 states. [2020-10-19 22:27:11,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:11,927 INFO L93 Difference]: Finished difference Result 530 states and 793 transitions. [2020-10-19 22:27:11,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:11,928 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:11,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:11,930 INFO L225 Difference]: With dead ends: 530 [2020-10-19 22:27:11,931 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:27:11,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:11,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:27:11,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-10-19 22:27:11,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:11,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 374 transitions. [2020-10-19 22:27:11,938 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 374 transitions. Word has length 100 [2020-10-19 22:27:11,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:11,939 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 374 transitions. [2020-10-19 22:27:11,939 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:11,939 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 374 transitions. [2020-10-19 22:27:11,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-10-19 22:27:11,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:11,940 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:11,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-19 22:27:11,941 INFO L429 AbstractCegarLoop]: === Iteration 32 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:11,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:11,941 INFO L82 PathProgramCache]: Analyzing trace with hash 1102945003, now seen corresponding path program 1 times [2020-10-19 22:27:11,941 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:11,941 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020609235] [2020-10-19 22:27:11,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:11,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:12,016 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:12,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020609235] [2020-10-19 22:27:12,017 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:12,017 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:12,017 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742466918] [2020-10-19 22:27:12,018 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:12,019 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:12,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:12,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:12,021 INFO L87 Difference]: Start difference. First operand 250 states and 374 transitions. Second operand 4 states. [2020-10-19 22:27:12,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:12,427 INFO L93 Difference]: Finished difference Result 503 states and 755 transitions. [2020-10-19 22:27:12,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:12,429 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 100 [2020-10-19 22:27:12,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:12,431 INFO L225 Difference]: With dead ends: 503 [2020-10-19 22:27:12,431 INFO L226 Difference]: Without dead ends: 272 [2020-10-19 22:27:12,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:12,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-19 22:27:12,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-10-19 22:27:12,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:12,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 373 transitions. [2020-10-19 22:27:12,439 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 373 transitions. Word has length 100 [2020-10-19 22:27:12,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:12,439 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 373 transitions. [2020-10-19 22:27:12,439 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:12,439 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 373 transitions. [2020-10-19 22:27:12,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:12,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:12,440 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:12,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-19 22:27:12,440 INFO L429 AbstractCegarLoop]: === Iteration 33 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:12,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:12,441 INFO L82 PathProgramCache]: Analyzing trace with hash 952064921, now seen corresponding path program 1 times [2020-10-19 22:27:12,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:12,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961193759] [2020-10-19 22:27:12,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:12,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:12,510 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:12,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961193759] [2020-10-19 22:27:12,512 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:12,512 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:12,512 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369018253] [2020-10-19 22:27:12,513 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:12,513 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:12,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:12,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:12,513 INFO L87 Difference]: Start difference. First operand 250 states and 373 transitions. Second operand 4 states. [2020-10-19 22:27:13,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:13,003 INFO L93 Difference]: Finished difference Result 530 states and 789 transitions. [2020-10-19 22:27:13,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:13,004 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:13,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:13,005 INFO L225 Difference]: With dead ends: 530 [2020-10-19 22:27:13,005 INFO L226 Difference]: Without dead ends: 299 [2020-10-19 22:27:13,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:13,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2020-10-19 22:27:13,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 250. [2020-10-19 22:27:13,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:13,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 372 transitions. [2020-10-19 22:27:13,013 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 372 transitions. Word has length 101 [2020-10-19 22:27:13,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:13,014 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 372 transitions. [2020-10-19 22:27:13,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:13,014 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 372 transitions. [2020-10-19 22:27:13,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:27:13,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:13,015 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:13,015 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-19 22:27:13,015 INFO L429 AbstractCegarLoop]: === Iteration 34 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:13,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:13,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1153888855, now seen corresponding path program 1 times [2020-10-19 22:27:13,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:13,016 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085561757] [2020-10-19 22:27:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:13,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:13,080 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:13,081 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085561757] [2020-10-19 22:27:13,081 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:13,081 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:13,081 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636544332] [2020-10-19 22:27:13,082 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:13,082 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:13,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:13,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:13,082 INFO L87 Difference]: Start difference. First operand 250 states and 372 transitions. Second operand 4 states. [2020-10-19 22:27:13,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:13,486 INFO L93 Difference]: Finished difference Result 503 states and 751 transitions. [2020-10-19 22:27:13,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:13,487 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 101 [2020-10-19 22:27:13,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:13,488 INFO L225 Difference]: With dead ends: 503 [2020-10-19 22:27:13,489 INFO L226 Difference]: Without dead ends: 272 [2020-10-19 22:27:13,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:13,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2020-10-19 22:27:13,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 250. [2020-10-19 22:27:13,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:13,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 371 transitions. [2020-10-19 22:27:13,497 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 371 transitions. Word has length 101 [2020-10-19 22:27:13,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:13,497 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 371 transitions. [2020-10-19 22:27:13,497 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:13,497 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 371 transitions. [2020-10-19 22:27:13,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:13,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:13,499 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:13,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-19 22:27:13,499 INFO L429 AbstractCegarLoop]: === Iteration 35 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:13,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:13,499 INFO L82 PathProgramCache]: Analyzing trace with hash -431127036, now seen corresponding path program 1 times [2020-10-19 22:27:13,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:13,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2097729891] [2020-10-19 22:27:13,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:13,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:13,562 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:13,562 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2097729891] [2020-10-19 22:27:13,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:13,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:13,563 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792943316] [2020-10-19 22:27:13,563 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:13,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:13,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:13,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:13,564 INFO L87 Difference]: Start difference. First operand 250 states and 371 transitions. Second operand 4 states. [2020-10-19 22:27:14,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:14,039 INFO L93 Difference]: Finished difference Result 520 states and 773 transitions. [2020-10-19 22:27:14,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:14,040 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:14,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:14,041 INFO L225 Difference]: With dead ends: 520 [2020-10-19 22:27:14,041 INFO L226 Difference]: Without dead ends: 289 [2020-10-19 22:27:14,042 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:14,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-19 22:27:14,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-10-19 22:27:14,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:14,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 370 transitions. [2020-10-19 22:27:14,062 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 370 transitions. Word has length 102 [2020-10-19 22:27:14,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:14,062 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 370 transitions. [2020-10-19 22:27:14,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:14,063 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 370 transitions. [2020-10-19 22:27:14,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:27:14,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:14,064 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:14,066 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-19 22:27:14,066 INFO L429 AbstractCegarLoop]: === Iteration 36 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:14,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:14,067 INFO L82 PathProgramCache]: Analyzing trace with hash 1530447622, now seen corresponding path program 1 times [2020-10-19 22:27:14,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:14,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931042912] [2020-10-19 22:27:14,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:14,139 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:14,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931042912] [2020-10-19 22:27:14,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:14,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:14,140 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452498456] [2020-10-19 22:27:14,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:14,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:14,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:14,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:14,141 INFO L87 Difference]: Start difference. First operand 250 states and 370 transitions. Second operand 4 states. [2020-10-19 22:27:14,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:14,492 INFO L93 Difference]: Finished difference Result 493 states and 735 transitions. [2020-10-19 22:27:14,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:14,493 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 102 [2020-10-19 22:27:14,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:14,496 INFO L225 Difference]: With dead ends: 493 [2020-10-19 22:27:14,496 INFO L226 Difference]: Without dead ends: 262 [2020-10-19 22:27:14,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:14,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2020-10-19 22:27:14,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 250. [2020-10-19 22:27:14,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:14,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 369 transitions. [2020-10-19 22:27:14,505 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 369 transitions. Word has length 102 [2020-10-19 22:27:14,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:14,505 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 369 transitions. [2020-10-19 22:27:14,505 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:14,505 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 369 transitions. [2020-10-19 22:27:14,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:14,506 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:14,507 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:14,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-19 22:27:14,507 INFO L429 AbstractCegarLoop]: === Iteration 37 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:14,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:14,507 INFO L82 PathProgramCache]: Analyzing trace with hash 1853395595, now seen corresponding path program 1 times [2020-10-19 22:27:14,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:14,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032312318] [2020-10-19 22:27:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:14,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:14,617 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-19 22:27:14,618 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032312318] [2020-10-19 22:27:14,618 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:14,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:27:14,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306844861] [2020-10-19 22:27:14,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:14,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:14,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:14,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:14,620 INFO L87 Difference]: Start difference. First operand 250 states and 369 transitions. Second operand 4 states. [2020-10-19 22:27:15,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,114 INFO L93 Difference]: Finished difference Result 520 states and 769 transitions. [2020-10-19 22:27:15,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:15,115 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 106 [2020-10-19 22:27:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,117 INFO L225 Difference]: With dead ends: 520 [2020-10-19 22:27:15,117 INFO L226 Difference]: Without dead ends: 289 [2020-10-19 22:27:15,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:27:15,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-10-19 22:27:15,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 250. [2020-10-19 22:27:15,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 250 states. [2020-10-19 22:27:15,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 368 transitions. [2020-10-19 22:27:15,126 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 368 transitions. Word has length 106 [2020-10-19 22:27:15,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,127 INFO L481 AbstractCegarLoop]: Abstraction has 250 states and 368 transitions. [2020-10-19 22:27:15,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:15,127 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 368 transitions. [2020-10-19 22:27:15,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-19 22:27:15,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,128 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:15,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-19 22:27:15,129 INFO L429 AbstractCegarLoop]: === Iteration 38 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,129 INFO L82 PathProgramCache]: Analyzing trace with hash 167215757, now seen corresponding path program 1 times [2020-10-19 22:27:15,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079714931] [2020-10-19 22:27:15,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,198 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:27:15,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079714931] [2020-10-19 22:27:15,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:15,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991879771] [2020-10-19 22:27:15,199 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:15,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:15,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:15,200 INFO L87 Difference]: Start difference. First operand 250 states and 368 transitions. Second operand 3 states. [2020-10-19 22:27:15,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,265 INFO L93 Difference]: Finished difference Result 708 states and 1057 transitions. [2020-10-19 22:27:15,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:15,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 106 [2020-10-19 22:27:15,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,268 INFO L225 Difference]: With dead ends: 708 [2020-10-19 22:27:15,268 INFO L226 Difference]: Without dead ends: 477 [2020-10-19 22:27:15,269 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:15,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2020-10-19 22:27:15,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 477. [2020-10-19 22:27:15,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 477 states. [2020-10-19 22:27:15,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 477 states to 477 states and 706 transitions. [2020-10-19 22:27:15,284 INFO L78 Accepts]: Start accepts. Automaton has 477 states and 706 transitions. Word has length 106 [2020-10-19 22:27:15,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,284 INFO L481 AbstractCegarLoop]: Abstraction has 477 states and 706 transitions. [2020-10-19 22:27:15,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:15,285 INFO L276 IsEmpty]: Start isEmpty. Operand 477 states and 706 transitions. [2020-10-19 22:27:15,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-19 22:27:15,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,286 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:15,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-19 22:27:15,287 INFO L429 AbstractCegarLoop]: === Iteration 39 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,287 INFO L82 PathProgramCache]: Analyzing trace with hash -1521078267, now seen corresponding path program 1 times [2020-10-19 22:27:15,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,287 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462230974] [2020-10-19 22:27:15,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,350 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-19 22:27:15,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462230974] [2020-10-19 22:27:15,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:15,351 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1917083250] [2020-10-19 22:27:15,351 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:15,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:15,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:15,352 INFO L87 Difference]: Start difference. First operand 477 states and 706 transitions. Second operand 3 states. [2020-10-19 22:27:15,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,413 INFO L93 Difference]: Finished difference Result 962 states and 1427 transitions. [2020-10-19 22:27:15,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:15,413 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-10-19 22:27:15,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,416 INFO L225 Difference]: With dead ends: 962 [2020-10-19 22:27:15,416 INFO L226 Difference]: Without dead ends: 504 [2020-10-19 22:27:15,417 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:15,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 504 states. [2020-10-19 22:27:15,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 504 to 504. [2020-10-19 22:27:15,429 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 504 states. [2020-10-19 22:27:15,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 504 states to 504 states and 741 transitions. [2020-10-19 22:27:15,430 INFO L78 Accepts]: Start accepts. Automaton has 504 states and 741 transitions. Word has length 107 [2020-10-19 22:27:15,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,430 INFO L481 AbstractCegarLoop]: Abstraction has 504 states and 741 transitions. [2020-10-19 22:27:15,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:15,431 INFO L276 IsEmpty]: Start isEmpty. Operand 504 states and 741 transitions. [2020-10-19 22:27:15,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-19 22:27:15,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,432 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:15,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-19 22:27:15,432 INFO L429 AbstractCegarLoop]: === Iteration 40 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1779195331, now seen corresponding path program 1 times [2020-10-19 22:27:15,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [13552329] [2020-10-19 22:27:15,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:15,469 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-10-19 22:27:15,470 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [13552329] [2020-10-19 22:27:15,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:15,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:27:15,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134501077] [2020-10-19 22:27:15,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:27:15,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:27:15,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:27:15,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:15,471 INFO L87 Difference]: Start difference. First operand 504 states and 741 transitions. Second operand 3 states. [2020-10-19 22:27:15,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:15,498 INFO L93 Difference]: Finished difference Result 991 states and 1463 transitions. [2020-10-19 22:27:15,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:27:15,499 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 107 [2020-10-19 22:27:15,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:15,501 INFO L225 Difference]: With dead ends: 991 [2020-10-19 22:27:15,502 INFO L226 Difference]: Without dead ends: 506 [2020-10-19 22:27:15,503 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:27:15,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 506 states. [2020-10-19 22:27:15,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 506 to 506. [2020-10-19 22:27:15,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 506 states. [2020-10-19 22:27:15,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 743 transitions. [2020-10-19 22:27:15,517 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 743 transitions. Word has length 107 [2020-10-19 22:27:15,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:15,518 INFO L481 AbstractCegarLoop]: Abstraction has 506 states and 743 transitions. [2020-10-19 22:27:15,518 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:27:15,518 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 743 transitions. [2020-10-19 22:27:15,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:27:15,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:15,520 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:15,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-19 22:27:15,520 INFO L429 AbstractCegarLoop]: === Iteration 41 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:15,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:15,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1381936186, now seen corresponding path program 1 times [2020-10-19 22:27:15,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:27:15,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865466758] [2020-10-19 22:27:15,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:27:15,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:15,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:15,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:15,820 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:27:15,821 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:15,821 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-19 22:27:15,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:15 BoogieIcfgContainer [2020-10-19 22:27:15,968 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:15,968 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:15,968 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:15,969 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:15,969 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:26:52" (3/4) ... [2020-10-19 22:27:15,973 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-10-19 22:27:15,974 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:15,976 INFO L168 Benchmark]: Toolchain (without parser) took 25973.03 ms. Allocated memory was 35.7 MB in the beginning and 141.6 MB in the end (delta: 105.9 MB). Free memory was 4.8 MB in the beginning and 82.0 MB in the end (delta: -77.2 MB). Peak memory consumption was 28.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:15,977 INFO L168 Benchmark]: CDTParser took 1.09 ms. Allocated memory is still 35.1 MB. Free memory is still 11.2 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:27:15,977 INFO L168 Benchmark]: CACSL2BoogieTranslator took 914.12 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 26.4 MB in the beginning and 24.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:15,977 INFO L168 Benchmark]: Boogie Procedure Inliner took 150.52 ms. Allocated memory is still 47.2 MB. Free memory was 23.7 MB in the beginning and 19.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:15,978 INFO L168 Benchmark]: Boogie Preprocessor took 105.51 ms. Allocated memory is still 47.2 MB. Free memory was 19.2 MB in the beginning and 12.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:15,978 INFO L168 Benchmark]: RCFGBuilder took 1398.71 ms. Allocated memory was 47.2 MB in the beginning and 55.1 MB in the end (delta: 7.9 MB). Free memory was 11.9 MB in the beginning and 22.8 MB in the end (delta: -10.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:15,979 INFO L168 Benchmark]: TraceAbstraction took 23299.21 ms. Allocated memory was 55.1 MB in the beginning and 141.6 MB in the end (delta: 86.5 MB). Free memory was 22.4 MB in the beginning and 82.0 MB in the end (delta: -59.6 MB). Peak memory consumption was 95.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:15,979 INFO L168 Benchmark]: Witness Printer took 5.59 ms. Allocated memory is still 141.6 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:27:15,982 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.09 ms. Allocated memory is still 35.1 MB. Free memory is still 11.2 MB. There was no memory consumed. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 914.12 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 26.4 MB in the beginning and 24.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 19.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 150.52 ms. Allocated memory is still 47.2 MB. Free memory was 23.7 MB in the beginning and 19.2 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 105.51 ms. Allocated memory is still 47.2 MB. Free memory was 19.2 MB in the beginning and 12.1 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 14.3 GB. * RCFGBuilder took 1398.71 ms. Allocated memory was 47.2 MB in the beginning and 55.1 MB in the end (delta: 7.9 MB). Free memory was 11.9 MB in the beginning and 22.8 MB in the end (delta: -10.9 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 23299.21 ms. Allocated memory was 55.1 MB in the beginning and 141.6 MB in the end (delta: 86.5 MB). Free memory was 22.4 MB in the beginning and 82.0 MB in the end (delta: -59.6 MB). Peak memory consumption was 95.3 MB. Max. memory is 14.3 GB. * Witness Printer took 5.59 ms. Allocated memory is still 141.6 MB. Free memory is still 82.0 MB. There was no memory consumed. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 3]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: overapproximation of bitwiseAnd at line 1123. Possible FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={6:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf ; [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 = __VERIFIER_nondet_int() ; [L1097] int tmp___4 = __VERIFIER_nondet_int() ; [L1098] int tmp___5 = __VERIFIER_nondet_int() ; [L1099] int tmp___6 = __VERIFIER_nondet_int() ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 = __VERIFIER_nondet_int() ; [L1103] int tmp___10 = __VERIFIER_nondet_int() ; [L1104] int blastFlag ; [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}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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}] [L1353] COND FALSE !(ret <= 0) [L1358] s->hit VAL [init=1, SSLv3_server_data={6:0}] [L1358] COND TRUE s->hit [L1359] s->state = 8656 VAL [init=1, SSLv3_server_data={6:0}] [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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 FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1231] COND TRUE s->state == 8656 [L1556] EXPR s->session [L1556] EXPR s->s3 [L1556] EXPR (s->s3)->tmp.new_cipher [L1556] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1557] COND FALSE !(! tmp___9) [L1563] ret = __VERIFIER_nondet_int() [L1564] COND TRUE blastFlag == 2 [L1565] blastFlag = 3 VAL [init=1, SSLv3_server_data={6:0}] [L1569] COND FALSE !(ret <= 0) [L1574] s->state = 8672 [L1575] s->init_num = 0 VAL [init=1, SSLv3_server_data={6:0}] [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={6:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={6:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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 FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1231] COND FALSE !(s->state == 8656) [L1234] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1234] COND FALSE !(s->state == 8657) [L1237] EXPR s->state VAL [init=1, SSLv3_server_data={6:0}] [L1237] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={6:0}] [L3] __assert_fail("0", "s3_srvr.blast.02.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={6:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 23.0s, OverallIterations: 41, TraceHistogramMax: 4, AutomataDifference: 18.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 7552 SDtfs, 2146 SDslu, 11009 SDs, 0 SdLazy, 6885 SolverSat, 340 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 13.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 225 GetRequests, 80 SyntacticMatches, 29 SemanticMatches, 116 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=506occurred in iteration=40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 40 MinimizatonAttempts, 941 StatesRemovedByMinimization, 37 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 3502 NumberOfCodeBlocks, 3502 NumberOfCodeBlocksAsserted, 41 NumberOfCheckSat, 3337 ConstructedInterpolants, 0 QuantifiedInterpolants, 763647 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 40 InterpolantComputations, 40 PerfectInterpolantSequences, 1736/1736 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.1.25-9a8b2e8 [2020-10-19 22:27:18,216 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:27:18,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:27:18,243 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:27:18,243 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:27:18,244 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:27:18,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:27:18,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:27:18,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:27:18,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:27:18,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:27:18,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:27:18,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:27:18,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:27:18,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:27:18,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:27:18,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:27:18,387 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:27:18,392 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:27:18,394 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:27:18,395 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:27:18,396 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:27:18,398 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:27:18,399 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:27:18,404 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:27:18,404 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:27:18,404 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:27:18,406 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:27:18,409 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:27:18,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:27:18,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:27:18,412 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:27:18,412 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:27:18,413 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:27:18,414 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:27:18,414 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:27:18,415 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:27:18,415 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:27:18,415 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:27:18,416 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:27:18,417 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:27:18,418 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Bitvector.epf [2020-10-19 22:27:18,441 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:27:18,441 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:27:18,442 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:27:18,442 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:27:18,443 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:27:18,443 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:27:18,443 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:27:18,443 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:27:18,443 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:27:18,444 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:27:18,444 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:27:18,444 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:27:18,444 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-10-19 22:27:18,444 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-10-19 22:27:18,444 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:27:18,445 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:27:18,445 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:27:18,445 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:27:18,445 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:27:18,445 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:27:18,446 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:27:18,446 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:27:18,446 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:18,446 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:27:18,446 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:27:18,446 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:27:18,447 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2020-10-19 22:27:18,447 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2020-10-19 22:27:18,447 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:27:18,447 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:27:18,447 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-19 22:27:18,448 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 -> 102517b0f8c706bb18ba594655c7ea5e5902e987 [2020-10-19 22:27:18,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:27:18,677 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:27:18,681 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:27:18,682 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:27:18,683 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:27:18,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-10-19 22:27:18,765 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50020425d/aa145f7f87c8404c92ed99fe807a2831/FLAG6870f4051 [2020-10-19 22:27:19,357 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:27:19,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl/s3_srvr.blast.02.i.cil-1.c [2020-10-19 22:27:19,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50020425d/aa145f7f87c8404c92ed99fe807a2831/FLAG6870f4051 [2020-10-19 22:27:19,541 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/50020425d/aa145f7f87c8404c92ed99fe807a2831 [2020-10-19 22:27:19,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:27:19,552 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:27:19,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:19,554 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:27:19,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:27:19,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:19" (1/1) ... [2020-10-19 22:27:19,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ccf283e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:19, skipping insertion in model container [2020-10-19 22:27:19,566 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:27:19" (1/1) ... [2020-10-19 22:27:19,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:27:19,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:27:20,516 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:20,566 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:27:20,787 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:27:20,817 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:27:20,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20 WrapperNode [2020-10-19 22:27:20,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:27:20,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:20,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:27:20,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:27:20,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:20,860 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:20,934 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:27:20,934 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:27:20,934 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:27:20,935 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:27:20,950 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:20,951 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:20,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:20,976 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:21,061 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:21,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:21,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... [2020-10-19 22:27:21,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:27:21,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:27:21,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:27:21,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:27:21,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:27:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-10-19 22:27:21,148 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-19 22:27:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:27:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2020-10-19 22:27:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-19 22:27:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-19 22:27:21,149 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:27:21,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:27:21,150 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2020-10-19 22:27:21,359 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:27:24,363 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##87: assume false; [2020-10-19 22:27:24,363 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##88: assume !false; [2020-10-19 22:27:24,380 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:27:24,380 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:27:24,385 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:24 BoogieIcfgContainer [2020-10-19 22:27:24,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:27:24,408 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:27:24,408 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:27:24,412 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:27:24,414 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:27:19" (1/3) ... [2020-10-19 22:27:24,415 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85eb9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:24, skipping insertion in model container [2020-10-19 22:27:24,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:27:20" (2/3) ... [2020-10-19 22:27:24,416 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@85eb9fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:27:24, skipping insertion in model container [2020-10-19 22:27:24,416 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:24" (3/3) ... [2020-10-19 22:27:24,418 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr.blast.02.i.cil-1.c [2020-10-19 22:27:24,429 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:27:24,437 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:27:24,449 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:27:24,475 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:27:24,475 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:27:24,475 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:27:24,475 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:27:24,475 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:27:24,475 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:27:24,475 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:27:24,476 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:27:24,492 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states. [2020-10-19 22:27:24,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:27:24,501 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:24,502 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:24,503 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:24,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:24,508 INFO L82 PathProgramCache]: Analyzing trace with hash 522836684, now seen corresponding path program 1 times [2020-10-19 22:27:24,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:24,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1986925768] [2020-10-19 22:27:24,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:24,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:24,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:24,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:24,824 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:24,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:24,894 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1986925768] [2020-10-19 22:27:24,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:24,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:24,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474356698] [2020-10-19 22:27:24,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:24,903 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:24,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:24,918 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:24,920 INFO L87 Difference]: Start difference. First operand 144 states. Second operand 4 states. [2020-10-19 22:27:25,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:25,045 INFO L93 Difference]: Finished difference Result 538 states and 913 transitions. [2020-10-19 22:27:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:25,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-19 22:27:25,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:25,066 INFO L225 Difference]: With dead ends: 538 [2020-10-19 22:27:25,066 INFO L226 Difference]: Without dead ends: 363 [2020-10-19 22:27:25,071 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:25,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2020-10-19 22:27:25,139 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 363. [2020-10-19 22:27:25,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 363 states. [2020-10-19 22:27:25,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 363 states to 363 states and 551 transitions. [2020-10-19 22:27:25,145 INFO L78 Accepts]: Start accepts. Automaton has 363 states and 551 transitions. Word has length 45 [2020-10-19 22:27:25,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:25,145 INFO L481 AbstractCegarLoop]: Abstraction has 363 states and 551 transitions. [2020-10-19 22:27:25,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:25,146 INFO L276 IsEmpty]: Start isEmpty. Operand 363 states and 551 transitions. [2020-10-19 22:27:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2020-10-19 22:27:25,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:25,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-19 22:27:25,388 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-10-19 22:27:25,389 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:25,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:25,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1786835122, now seen corresponding path program 1 times [2020-10-19 22:27:25,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:25,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [549096080] [2020-10-19 22:27:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:27:25,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 2 conjunts are in the unsatisfiable core [2020-10-19 22:27:25,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:27:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:25,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-10-19 22:27:25,774 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:27:25,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [549096080] [2020-10-19 22:27:25,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:27:25,776 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2020-10-19 22:27:25,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366879006] [2020-10-19 22:27:25,780 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:27:25,780 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2020-10-19 22:27:25,781 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:27:25,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:27:25,781 INFO L87 Difference]: Start difference. First operand 363 states and 551 transitions. Second operand 4 states. [2020-10-19 22:27:26,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:27:26,446 INFO L93 Difference]: Finished difference Result 833 states and 1271 transitions. [2020-10-19 22:27:26,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:27:26,447 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 103 [2020-10-19 22:27:26,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:27:26,451 INFO L225 Difference]: With dead ends: 833 [2020-10-19 22:27:26,451 INFO L226 Difference]: Without dead ends: 597 [2020-10-19 22:27:26,455 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 22:27:26,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2020-10-19 22:27:26,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 597. [2020-10-19 22:27:26,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 597 states. [2020-10-19 22:27:26,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 905 transitions. [2020-10-19 22:27:26,541 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 905 transitions. Word has length 103 [2020-10-19 22:27:26,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:27:26,542 INFO L481 AbstractCegarLoop]: Abstraction has 597 states and 905 transitions. [2020-10-19 22:27:26,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:27:26,545 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 905 transitions. [2020-10-19 22:27:26,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-19 22:27:26,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:27:26,552 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:27:26,754 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-10-19 22:27:26,755 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:27:26,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:27:26,756 INFO L82 PathProgramCache]: Analyzing trace with hash 1381936186, now seen corresponding path program 1 times [2020-10-19 22:27:26,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy WOLF [2020-10-19 22:27:26,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1654681396] [2020-10-19 22:27:26,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-10-19 22:27:27,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:27,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:27,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:27:27,681 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:27:27,953 INFO L173 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2020-10-19 22:27:27,953 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:27:28,166 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-10-19 22:27:28,339 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:27:28 BoogieIcfgContainer [2020-10-19 22:27:28,340 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:27:28,340 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:27:28,340 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:27:28,341 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:27:28,341 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:27:24" (3/4) ... [2020-10-19 22:27:28,344 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:27:28,496 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:27:28,496 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:27:28,499 INFO L168 Benchmark]: Toolchain (without parser) took 8951.83 ms. Allocated memory was 35.1 MB in the beginning and 72.9 MB in the end (delta: 37.7 MB). Free memory was 12.9 MB in the beginning and 19.0 MB in the end (delta: -6.1 MB). Peak memory consumption was 31.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,500 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 32.5 MB. Free memory was 8.7 MB in the beginning and 8.7 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,500 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1265.79 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 11.9 MB in the beginning and 18.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,501 INFO L168 Benchmark]: Boogie Procedure Inliner took 114.02 ms. Allocated memory is still 45.1 MB. Free memory was 18.1 MB in the beginning and 13.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,501 INFO L168 Benchmark]: Boogie Preprocessor took 146.08 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 13.3 MB in the beginning and 21.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,502 INFO L168 Benchmark]: RCFGBuilder took 3304.62 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 21.1 MB in the beginning and 10.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,502 INFO L168 Benchmark]: TraceAbstraction took 3932.31 ms. Allocated memory was 54.5 MB in the beginning and 72.9 MB in the end (delta: 18.4 MB). Free memory was 30.8 MB in the beginning and 38.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 38.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,503 INFO L168 Benchmark]: Witness Printer took 156.30 ms. Allocated memory is still 72.9 MB. Free memory was 38.1 MB in the beginning and 19.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:27:28,506 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 32.5 MB. Free memory was 8.7 MB in the beginning and 8.7 MB in the end (delta: 45.7 kB). Peak memory consumption was 45.7 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 1265.79 ms. Allocated memory was 35.1 MB in the beginning and 45.1 MB in the end (delta: 10.0 MB). Free memory was 11.9 MB in the beginning and 18.1 MB in the end (delta: -6.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 114.02 ms. Allocated memory is still 45.1 MB. Free memory was 18.1 MB in the beginning and 13.3 MB in the end (delta: 4.8 MB). Peak memory consumption was 4.8 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 146.08 ms. Allocated memory was 45.1 MB in the beginning and 46.1 MB in the end (delta: 1.0 MB). Free memory was 13.3 MB in the beginning and 21.1 MB in the end (delta: -7.8 MB). Peak memory consumption was 5.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 3304.62 ms. Allocated memory was 46.1 MB in the beginning and 54.0 MB in the end (delta: 7.9 MB). Free memory was 21.1 MB in the beginning and 10.5 MB in the end (delta: 10.6 MB). Peak memory consumption was 18.7 MB. Max. memory is 14.3 GB. * TraceAbstraction took 3932.31 ms. Allocated memory was 54.5 MB in the beginning and 72.9 MB in the end (delta: 18.4 MB). Free memory was 30.8 MB in the beginning and 38.1 MB in the end (delta: -7.3 MB). Peak memory consumption was 38.4 MB. Max. memory is 14.3 GB. * Witness Printer took 156.30 ms. Allocated memory is still 72.9 MB. Free memory was 38.1 MB in the beginning and 19.0 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1044] static int init = 1; [L1045] static SSL_METHOD SSLv3_server_data ; VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1067] SSL *s ; [L1068] int tmp ; [L1072] s = malloc(sizeof(SSL)) [L1073] s->s3 = malloc(sizeof(struct ssl3_state_st)) [L1074] s->ctx = malloc(sizeof(SSL_CTX)) [L1075] s->session = malloc(sizeof(SSL_SESSION)) [L1076] s->state = 8464 [L1083] BUF_MEM *buf ; [L1084] unsigned long l ; [L1085] unsigned long Time ; [L1086] unsigned long tmp ; [L1087] void (*cb)() ; [L1088] long num1 ; [L1089] int ret ; [L1090] int new_state ; [L1091] int state ; [L1092] int skip ; [L1093] int got_new_session ; [L1094] int tmp___1 = __VERIFIER_nondet_int() ; [L1095] int tmp___2 = __VERIFIER_nondet_int() ; [L1096] int tmp___3 = __VERIFIER_nondet_int() ; [L1097] int tmp___4 = __VERIFIER_nondet_int() ; [L1098] int tmp___5 = __VERIFIER_nondet_int() ; [L1099] int tmp___6 = __VERIFIER_nondet_int() ; [L1100] int tmp___7 ; [L1101] long tmp___8 = __VERIFIER_nondet_long() ; [L1102] int tmp___9 = __VERIFIER_nondet_int() ; [L1103] int tmp___10 = __VERIFIER_nondet_int() ; [L1104] int blastFlag ; [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}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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}] [L1353] COND FALSE !(ret <= 0) [L1358] s->hit VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1358] COND TRUE s->hit [L1359] s->state = 8656 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1363] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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 FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1231] COND TRUE s->state == 8656 [L1556] EXPR s->session [L1556] EXPR s->s3 [L1556] EXPR (s->s3)->tmp.new_cipher [L1556] (s->session)->cipher = (s->s3)->tmp.new_cipher [L1557] COND FALSE !(! tmp___9) [L1563] ret = __VERIFIER_nondet_int() [L1564] COND TRUE blastFlag == 2 [L1565] blastFlag = 3 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1569] COND FALSE !(ret <= 0) [L1574] s->state = 8672 [L1575] s->init_num = 0 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1576] COND FALSE !(! tmp___10) VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] EXPR s->s3 [L1663] EXPR (s->s3)->tmp.reuse_message VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1663] COND FALSE !(! (s->s3)->tmp.reuse_message) [L1692] 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 FALSE !(s->state == 8544) [L1195] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1195] COND FALSE !(s->state == 8545) [L1198] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1198] COND FALSE !(s->state == 8560) [L1201] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1201] COND FALSE !(s->state == 8561) [L1204] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1204] COND FALSE !(s->state == 8448) [L1207] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1207] COND FALSE !(s->state == 8576) [L1210] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1210] COND FALSE !(s->state == 8577) [L1213] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1213] COND FALSE !(s->state == 8592) [L1216] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1216] COND FALSE !(s->state == 8593) [L1219] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1219] COND FALSE !(s->state == 8608) [L1222] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1222] COND FALSE !(s->state == 8609) [L1225] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1225] COND FALSE !(s->state == 8640) [L1228] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1228] COND FALSE !(s->state == 8641) [L1231] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1231] COND FALSE !(s->state == 8656) [L1234] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1234] COND FALSE !(s->state == 8657) [L1237] EXPR s->state VAL [init=1, SSLv3_server_data={-2147483617:0}] [L1237] COND TRUE s->state == 8672 [L1585] ret = __VERIFIER_nondet_int() [L1586] COND TRUE blastFlag == 3 VAL [init=1, SSLv3_server_data={-2147483617:0}] [L3] __assert_fail("0", "s3_srvr.blast.02.i.cil-1.c", 3, "reach_error") VAL [init=1, SSLv3_server_data={-2147483617:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 144 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 3.6s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 588 SDtfs, 843 SDslu, 783 SDs, 0 SdLazy, 48 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 292 GetRequests, 288 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=597occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 273 NumberOfCodeBlocks, 273 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 292 ConstructedInterpolants, 0 QuantifiedInterpolants, 74336 SizeOfPredicates, 1 NumberOfNonLiveVariables, 427 ConjunctsInSsa, 4 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 116/116 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...