./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.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-simplified/s3_srvr_13.cil.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 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 22:24:13,729 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:24:13,731 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:24:13,756 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:24:13,756 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:24:13,757 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:24:13,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:24:13,760 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:24:13,762 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:24:13,770 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:24:13,771 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:24:13,772 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:24:13,773 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:24:13,774 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:24:13,775 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:24:13,776 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:24:13,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:24:13,778 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:24:13,779 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:24:13,781 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:24:13,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:24:13,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:24:13,785 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:24:13,785 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:24:13,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:24:13,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:24:13,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:24:13,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:24:13,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:24:13,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:24:13,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:24:13,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:24:13,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:24:13,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:24:13,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:24:13,795 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:24:13,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:24:13,796 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:24:13,796 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:24:13,797 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:24:13,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:24:13,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:24:13,821 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:24:13,822 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:24:13,823 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:24:13,823 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:24:13,823 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:24:13,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:24:13,824 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:24:13,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:24:13,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:24:13,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:24:13,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:24:13,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:24:13,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:24:13,826 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:24:13,826 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:24:13,826 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:24:13,826 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:24:13,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:24:13,827 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:24:13,827 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:24:13,827 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:24:13,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:24:13,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:24:13,828 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:24:13,828 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:24:13,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:24:13,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:24:13,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:24:13,829 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:24:13,830 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 -> 390f2eba6fdf8824b99921adcaaa6cdc728c2d2b [2020-10-19 22:24:14,024 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:24:14,041 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:24:14,045 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:24:14,047 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:24:14,047 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:24:14,048 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-10-19 22:24:14,119 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cef392fb0/ed070b0f28d546b7ba1944ee277540a9/FLAGb0f5e5146 [2020-10-19 22:24:14,620 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:24:14,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/openssl-simplified/s3_srvr_13.cil.c [2020-10-19 22:24:14,645 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cef392fb0/ed070b0f28d546b7ba1944ee277540a9/FLAGb0f5e5146 [2020-10-19 22:24:14,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cef392fb0/ed070b0f28d546b7ba1944ee277540a9 [2020-10-19 22:24:14,922 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:24:14,931 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:24:14,934 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:14,934 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:24:14,938 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:24:14,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e9372f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:14, skipping insertion in model container [2020-10-19 22:24:14,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:24:14" (1/1) ... [2020-10-19 22:24:14,952 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:24:14,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:24:15,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:15,323 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:24:15,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:24:15,402 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:24:15,403 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15 WrapperNode [2020-10-19 22:24:15,403 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:24:15,404 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:15,404 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:24:15,404 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:24:15,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,428 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,484 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:24:15,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:24:15,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:24:15,487 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:24:15,495 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,495 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,499 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,509 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,520 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,523 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (1/1) ... [2020-10-19 22:24:15,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:24:15,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:24:15,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:24:15,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:24:15,531 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (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 22:24:15,611 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:24:15,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:24:15,612 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:24:15,612 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:24:15,762 WARN L798 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-10-19 22:24:16,369 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##90: assume false; [2020-10-19 22:24:16,369 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##91: assume !false; [2020-10-19 22:24:16,382 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:24:16,382 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-10-19 22:24:16,384 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:16 BoogieIcfgContainer [2020-10-19 22:24:16,385 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:24:16,386 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:24:16,386 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:24:16,390 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:24:16,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:24:14" (1/3) ... [2020-10-19 22:24:16,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d3cf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:16, skipping insertion in model container [2020-10-19 22:24:16,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:24:15" (2/3) ... [2020-10-19 22:24:16,392 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@21d3cf51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:24:16, skipping insertion in model container [2020-10-19 22:24:16,392 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:16" (3/3) ... [2020-10-19 22:24:16,394 INFO L111 eAbstractionObserver]: Analyzing ICFG s3_srvr_13.cil.c [2020-10-19 22:24:16,414 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:24:16,422 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:24:16,437 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:24:16,464 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:24:16,465 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:24:16,465 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:24:16,465 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:24:16,466 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:24:16,466 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:24:16,466 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:24:16,466 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:24:16,485 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states. [2020-10-19 22:24:16,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-19 22:24:16,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:16,493 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] [2020-10-19 22:24:16,494 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:16,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:16,498 INFO L82 PathProgramCache]: Analyzing trace with hash -651780530, now seen corresponding path program 1 times [2020-10-19 22:24:16,505 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:16,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911990752] [2020-10-19 22:24:16,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:16,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:16,709 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 22:24:16,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911990752] [2020-10-19 22:24:16,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:16,712 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:16,713 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264465626] [2020-10-19 22:24:16,719 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:16,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:16,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:16,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:16,740 INFO L87 Difference]: Start difference. First operand 154 states. Second operand 3 states. [2020-10-19 22:24:16,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:16,983 INFO L93 Difference]: Finished difference Result 326 states and 558 transitions. [2020-10-19 22:24:16,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:16,985 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-10-19 22:24:16,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:16,999 INFO L225 Difference]: With dead ends: 326 [2020-10-19 22:24:17,000 INFO L226 Difference]: Without dead ends: 160 [2020-10-19 22:24:17,004 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 22:24:17,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-19 22:24:17,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 158. [2020-10-19 22:24:17,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-10-19 22:24:17,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 249 transitions. [2020-10-19 22:24:17,070 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 249 transitions. Word has length 26 [2020-10-19 22:24:17,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,071 INFO L481 AbstractCegarLoop]: Abstraction has 158 states and 249 transitions. [2020-10-19 22:24:17,071 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:17,071 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 249 transitions. [2020-10-19 22:24:17,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:17,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,073 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] [2020-10-19 22:24:17,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:24:17,074 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,075 INFO L82 PathProgramCache]: Analyzing trace with hash 490720896, now seen corresponding path program 1 times [2020-10-19 22:24:17,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368587586] [2020-10-19 22:24:17,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,137 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 22:24:17,137 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368587586] [2020-10-19 22:24:17,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:17,138 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428709277] [2020-10-19 22:24:17,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:17,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:17,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:17,141 INFO L87 Difference]: Start difference. First operand 158 states and 249 transitions. Second operand 3 states. [2020-10-19 22:24:17,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:17,290 INFO L93 Difference]: Finished difference Result 330 states and 519 transitions. [2020-10-19 22:24:17,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:17,291 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:17,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:17,300 INFO L225 Difference]: With dead ends: 330 [2020-10-19 22:24:17,301 INFO L226 Difference]: Without dead ends: 180 [2020-10-19 22:24:17,302 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 22:24:17,303 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-19 22:24:17,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2020-10-19 22:24:17,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-19 22:24:17,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 279 transitions. [2020-10-19 22:24:17,321 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 279 transitions. Word has length 27 [2020-10-19 22:24:17,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,321 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 279 transitions. [2020-10-19 22:24:17,322 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:17,322 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 279 transitions. [2020-10-19 22:24:17,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:17,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,326 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] [2020-10-19 22:24:17,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:24:17,327 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,328 INFO L82 PathProgramCache]: Analyzing trace with hash 1046842997, now seen corresponding path program 1 times [2020-10-19 22:24:17,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,328 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044497793] [2020-10-19 22:24:17,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,391 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 22:24:17,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044497793] [2020-10-19 22:24:17,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:17,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092623085] [2020-10-19 22:24:17,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:17,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:17,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:17,394 INFO L87 Difference]: Start difference. First operand 180 states and 279 transitions. Second operand 3 states. [2020-10-19 22:24:17,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:17,562 INFO L93 Difference]: Finished difference Result 360 states and 560 transitions. [2020-10-19 22:24:17,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:17,562 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:17,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:17,564 INFO L225 Difference]: With dead ends: 360 [2020-10-19 22:24:17,565 INFO L226 Difference]: Without dead ends: 188 [2020-10-19 22:24:17,570 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 22:24:17,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-19 22:24:17,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-10-19 22:24:17,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-10-19 22:24:17,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 290 transitions. [2020-10-19 22:24:17,589 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 290 transitions. Word has length 27 [2020-10-19 22:24:17,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,590 INFO L481 AbstractCegarLoop]: Abstraction has 186 states and 290 transitions. [2020-10-19 22:24:17,590 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:17,590 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 290 transitions. [2020-10-19 22:24:17,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:24:17,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,592 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] [2020-10-19 22:24:17,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:24:17,592 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1631613131, now seen corresponding path program 1 times [2020-10-19 22:24:17,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,593 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742951430] [2020-10-19 22:24:17,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,642 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 22:24:17,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742951430] [2020-10-19 22:24:17,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:17,643 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1296414120] [2020-10-19 22:24:17,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:17,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:17,644 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:17,644 INFO L87 Difference]: Start difference. First operand 186 states and 290 transitions. Second operand 3 states. [2020-10-19 22:24:17,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:17,801 INFO L93 Difference]: Finished difference Result 365 states and 570 transitions. [2020-10-19 22:24:17,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:17,802 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:24:17,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:17,804 INFO L225 Difference]: With dead ends: 365 [2020-10-19 22:24:17,804 INFO L226 Difference]: Without dead ends: 187 [2020-10-19 22:24:17,805 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 22:24:17,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-19 22:24:17,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-10-19 22:24:17,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-19 22:24:17,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 291 transitions. [2020-10-19 22:24:17,817 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 291 transitions. Word has length 27 [2020-10-19 22:24:17,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:17,817 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 291 transitions. [2020-10-19 22:24:17,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:17,818 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 291 transitions. [2020-10-19 22:24:17,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-19 22:24:17,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:17,819 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] [2020-10-19 22:24:17,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:24:17,820 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:17,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:17,820 INFO L82 PathProgramCache]: Analyzing trace with hash -431278894, now seen corresponding path program 1 times [2020-10-19 22:24:17,820 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:17,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [460815902] [2020-10-19 22:24:17,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:17,857 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 22:24:17,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [460815902] [2020-10-19 22:24:17,858 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:17,858 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:17,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1869969524] [2020-10-19 22:24:17,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:17,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:17,860 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:17,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:17,861 INFO L87 Difference]: Start difference. First operand 187 states and 291 transitions. Second operand 3 states. [2020-10-19 22:24:18,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:18,008 INFO L93 Difference]: Finished difference Result 376 states and 582 transitions. [2020-10-19 22:24:18,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:18,009 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-10-19 22:24:18,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:18,010 INFO L225 Difference]: With dead ends: 376 [2020-10-19 22:24:18,011 INFO L226 Difference]: Without dead ends: 197 [2020-10-19 22:24:18,011 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 22:24:18,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-19 22:24:18,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-10-19 22:24:18,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-19 22:24:18,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 289 transitions. [2020-10-19 22:24:18,022 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 289 transitions. Word has length 28 [2020-10-19 22:24:18,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:18,022 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 289 transitions. [2020-10-19 22:24:18,022 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:18,022 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 289 transitions. [2020-10-19 22:24:18,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-19 22:24:18,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:18,024 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] [2020-10-19 22:24:18,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:24:18,025 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:18,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:18,025 INFO L82 PathProgramCache]: Analyzing trace with hash 1682017785, now seen corresponding path program 1 times [2020-10-19 22:24:18,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:18,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887294342] [2020-10-19 22:24:18,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:18,079 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 22:24:18,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887294342] [2020-10-19 22:24:18,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:18,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:18,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779266359] [2020-10-19 22:24:18,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:18,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:18,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:18,083 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:18,083 INFO L87 Difference]: Start difference. First operand 187 states and 289 transitions. Second operand 3 states. [2020-10-19 22:24:18,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:18,240 INFO L93 Difference]: Finished difference Result 376 states and 578 transitions. [2020-10-19 22:24:18,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:18,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-10-19 22:24:18,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:18,242 INFO L225 Difference]: With dead ends: 376 [2020-10-19 22:24:18,242 INFO L226 Difference]: Without dead ends: 197 [2020-10-19 22:24:18,243 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 22:24:18,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-19 22:24:18,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-10-19 22:24:18,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-19 22:24:18,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 287 transitions. [2020-10-19 22:24:18,252 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 287 transitions. Word has length 29 [2020-10-19 22:24:18,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:18,252 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 287 transitions. [2020-10-19 22:24:18,252 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:18,253 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 287 transitions. [2020-10-19 22:24:18,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:24:18,254 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:18,254 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] [2020-10-19 22:24:18,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-19 22:24:18,255 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:18,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:18,255 INFO L82 PathProgramCache]: Analyzing trace with hash -1452653961, now seen corresponding path program 1 times [2020-10-19 22:24:18,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:18,256 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773732] [2020-10-19 22:24:18,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:18,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:18,285 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 22:24:18,286 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773732] [2020-10-19 22:24:18,286 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:18,286 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:18,286 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307395309] [2020-10-19 22:24:18,287 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:18,287 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:18,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:18,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:18,288 INFO L87 Difference]: Start difference. First operand 187 states and 287 transitions. Second operand 3 states. [2020-10-19 22:24:18,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:18,409 INFO L93 Difference]: Finished difference Result 376 states and 574 transitions. [2020-10-19 22:24:18,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:18,410 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-19 22:24:18,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:18,412 INFO L225 Difference]: With dead ends: 376 [2020-10-19 22:24:18,412 INFO L226 Difference]: Without dead ends: 197 [2020-10-19 22:24:18,412 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 22:24:18,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-19 22:24:18,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 187. [2020-10-19 22:24:18,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-19 22:24:18,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 285 transitions. [2020-10-19 22:24:18,431 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 285 transitions. Word has length 30 [2020-10-19 22:24:18,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:18,431 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 285 transitions. [2020-10-19 22:24:18,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:18,432 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 285 transitions. [2020-10-19 22:24:18,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:24:18,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:18,433 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] [2020-10-19 22:24:18,434 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-19 22:24:18,434 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:18,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:18,435 INFO L82 PathProgramCache]: Analyzing trace with hash -1026970664, now seen corresponding path program 1 times [2020-10-19 22:24:18,435 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:18,435 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479047627] [2020-10-19 22:24:18,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:18,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:18,505 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 22:24:18,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479047627] [2020-10-19 22:24:18,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:18,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:24:18,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169746208] [2020-10-19 22:24:18,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:24:18,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:18,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:24:18,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:24:18,508 INFO L87 Difference]: Start difference. First operand 187 states and 285 transitions. Second operand 4 states. [2020-10-19 22:24:18,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:18,771 INFO L93 Difference]: Finished difference Result 572 states and 871 transitions. [2020-10-19 22:24:18,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:24:18,772 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-10-19 22:24:18,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:18,774 INFO L225 Difference]: With dead ends: 572 [2020-10-19 22:24:18,775 INFO L226 Difference]: Without dead ends: 393 [2020-10-19 22:24:18,775 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 22:24:18,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2020-10-19 22:24:18,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 357. [2020-10-19 22:24:18,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-10-19 22:24:18,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 543 transitions. [2020-10-19 22:24:18,792 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 543 transitions. Word has length 30 [2020-10-19 22:24:18,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:18,793 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 543 transitions. [2020-10-19 22:24:18,793 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:24:18,793 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 543 transitions. [2020-10-19 22:24:18,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 22:24:18,794 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:18,795 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] [2020-10-19 22:24:18,795 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-19 22:24:18,795 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:18,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:18,796 INFO L82 PathProgramCache]: Analyzing trace with hash -1801233473, now seen corresponding path program 1 times [2020-10-19 22:24:18,796 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:18,796 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69531640] [2020-10-19 22:24:18,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:18,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:18,826 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 22:24:18,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69531640] [2020-10-19 22:24:18,827 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:18,827 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:18,827 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878579846] [2020-10-19 22:24:18,827 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:18,828 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:18,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:18,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:18,828 INFO L87 Difference]: Start difference. First operand 357 states and 543 transitions. Second operand 3 states. [2020-10-19 22:24:19,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,000 INFO L93 Difference]: Finished difference Result 781 states and 1197 transitions. [2020-10-19 22:24:19,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,001 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-10-19 22:24:19,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,004 INFO L225 Difference]: With dead ends: 781 [2020-10-19 22:24:19,004 INFO L226 Difference]: Without dead ends: 432 [2020-10-19 22:24:19,005 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 22:24:19,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 432 states. [2020-10-19 22:24:19,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 432 to 412. [2020-10-19 22:24:19,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 412 states. [2020-10-19 22:24:19,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 630 transitions. [2020-10-19 22:24:19,022 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 630 transitions. Word has length 33 [2020-10-19 22:24:19,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,023 INFO L481 AbstractCegarLoop]: Abstraction has 412 states and 630 transitions. [2020-10-19 22:24:19,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,023 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 630 transitions. [2020-10-19 22:24:19,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-19 22:24:19,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,024 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] [2020-10-19 22:24:19,024 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-19 22:24:19,025 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,025 INFO L82 PathProgramCache]: Analyzing trace with hash -979083784, now seen corresponding path program 1 times [2020-10-19 22:24:19,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354901901] [2020-10-19 22:24:19,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,053 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 22:24:19,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354901901] [2020-10-19 22:24:19,053 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:19,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:19,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053297741] [2020-10-19 22:24:19,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:19,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:19,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:19,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:19,055 INFO L87 Difference]: Start difference. First operand 412 states and 630 transitions. Second operand 3 states. [2020-10-19 22:24:19,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,232 INFO L93 Difference]: Finished difference Result 858 states and 1321 transitions. [2020-10-19 22:24:19,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,233 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-10-19 22:24:19,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,236 INFO L225 Difference]: With dead ends: 858 [2020-10-19 22:24:19,236 INFO L226 Difference]: Without dead ends: 454 [2020-10-19 22:24:19,237 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 22:24:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2020-10-19 22:24:19,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 434. [2020-10-19 22:24:19,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 434 states. [2020-10-19 22:24:19,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 670 transitions. [2020-10-19 22:24:19,253 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 670 transitions. Word has length 34 [2020-10-19 22:24:19,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,254 INFO L481 AbstractCegarLoop]: Abstraction has 434 states and 670 transitions. [2020-10-19 22:24:19,254 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,254 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 670 transitions. [2020-10-19 22:24:19,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-19 22:24:19,255 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,255 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] [2020-10-19 22:24:19,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-19 22:24:19,256 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,256 INFO L82 PathProgramCache]: Analyzing trace with hash 1380253332, now seen corresponding path program 1 times [2020-10-19 22:24:19,256 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,257 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157978072] [2020-10-19 22:24:19,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,288 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 22:24:19,288 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157978072] [2020-10-19 22:24:19,289 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:19,289 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:19,289 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381307673] [2020-10-19 22:24:19,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:19,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:19,290 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:19,290 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:19,291 INFO L87 Difference]: Start difference. First operand 434 states and 670 transitions. Second operand 3 states. [2020-10-19 22:24:19,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,476 INFO L93 Difference]: Finished difference Result 925 states and 1433 transitions. [2020-10-19 22:24:19,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,477 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-10-19 22:24:19,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,480 INFO L225 Difference]: With dead ends: 925 [2020-10-19 22:24:19,480 INFO L226 Difference]: Without dead ends: 499 [2020-10-19 22:24:19,482 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 22:24:19,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2020-10-19 22:24:19,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 489. [2020-10-19 22:24:19,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 489 states. [2020-10-19 22:24:19,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 760 transitions. [2020-10-19 22:24:19,500 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 760 transitions. Word has length 40 [2020-10-19 22:24:19,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,501 INFO L481 AbstractCegarLoop]: Abstraction has 489 states and 760 transitions. [2020-10-19 22:24:19,501 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,501 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 760 transitions. [2020-10-19 22:24:19,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 22:24:19,502 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,503 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] [2020-10-19 22:24:19,503 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-19 22:24:19,503 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,504 INFO L82 PathProgramCache]: Analyzing trace with hash -168828106, now seen corresponding path program 1 times [2020-10-19 22:24:19,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28738868] [2020-10-19 22:24:19,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,546 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 22:24:19,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28738868] [2020-10-19 22:24:19,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:19,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:19,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959255620] [2020-10-19 22:24:19,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:19,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:19,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:19,548 INFO L87 Difference]: Start difference. First operand 489 states and 760 transitions. Second operand 3 states. [2020-10-19 22:24:19,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:19,747 INFO L93 Difference]: Finished difference Result 992 states and 1545 transitions. [2020-10-19 22:24:19,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:19,748 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 41 [2020-10-19 22:24:19,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:19,751 INFO L225 Difference]: With dead ends: 992 [2020-10-19 22:24:19,752 INFO L226 Difference]: Without dead ends: 511 [2020-10-19 22:24:19,753 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 22:24:19,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 511 states. [2020-10-19 22:24:19,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 511 to 501. [2020-10-19 22:24:19,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-19 22:24:19,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 782 transitions. [2020-10-19 22:24:19,772 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 782 transitions. Word has length 41 [2020-10-19 22:24:19,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:19,772 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 782 transitions. [2020-10-19 22:24:19,772 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:19,773 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 782 transitions. [2020-10-19 22:24:19,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-19 22:24:19,775 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:19,775 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-19 22:24:19,775 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:24:19,776 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:19,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:19,776 INFO L82 PathProgramCache]: Analyzing trace with hash -2051620392, now seen corresponding path program 1 times [2020-10-19 22:24:19,776 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:19,777 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1039422572] [2020-10-19 22:24:19,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:19,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:19,844 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:19,845 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1039422572] [2020-10-19 22:24:19,845 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:19,846 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:19,846 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [570983401] [2020-10-19 22:24:19,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:19,848 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:19,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:19,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:19,850 INFO L87 Difference]: Start difference. First operand 501 states and 782 transitions. Second operand 3 states. [2020-10-19 22:24:20,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,016 INFO L93 Difference]: Finished difference Result 1008 states and 1575 transitions. [2020-10-19 22:24:20,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,018 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 61 [2020-10-19 22:24:20,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,021 INFO L225 Difference]: With dead ends: 1008 [2020-10-19 22:24:20,021 INFO L226 Difference]: Without dead ends: 515 [2020-10-19 22:24:20,022 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 22:24:20,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2020-10-19 22:24:20,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 501. [2020-10-19 22:24:20,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-19 22:24:20,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 778 transitions. [2020-10-19 22:24:20,042 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 778 transitions. Word has length 61 [2020-10-19 22:24:20,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,045 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 778 transitions. [2020-10-19 22:24:20,045 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,046 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 778 transitions. [2020-10-19 22:24:20,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:24:20,047 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,047 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-19 22:24:20,048 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-19 22:24:20,048 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1852313784, now seen corresponding path program 1 times [2020-10-19 22:24:20,049 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,053 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876391008] [2020-10-19 22:24:20,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:20,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:20,099 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 22:24:20,099 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876391008] [2020-10-19 22:24:20,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224534588] [2020-10-19 22:24:20,101 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,102 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,102 INFO L87 Difference]: Start difference. First operand 501 states and 778 transitions. Second operand 3 states. [2020-10-19 22:24:20,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,269 INFO L93 Difference]: Finished difference Result 1032 states and 1601 transitions. [2020-10-19 22:24:20,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,269 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-10-19 22:24:20,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,272 INFO L225 Difference]: With dead ends: 1032 [2020-10-19 22:24:20,272 INFO L226 Difference]: Without dead ends: 539 [2020-10-19 22:24:20,274 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 22:24:20,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 539 states. [2020-10-19 22:24:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 539 to 539. [2020-10-19 22:24:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 539 states. [2020-10-19 22:24:20,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 832 transitions. [2020-10-19 22:24:20,294 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 832 transitions. Word has length 62 [2020-10-19 22:24:20,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,295 INFO L481 AbstractCegarLoop]: Abstraction has 539 states and 832 transitions. [2020-10-19 22:24:20,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,296 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 832 transitions. [2020-10-19 22:24:20,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-19 22:24:20,297 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,297 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:20,297 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-19 22:24:20,298 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,298 INFO L82 PathProgramCache]: Analyzing trace with hash 932372046, now seen corresponding path program 1 times [2020-10-19 22:24:20,298 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820345031] [2020-10-19 22:24:20,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:20,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:20,341 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 22:24:20,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820345031] [2020-10-19 22:24:20,342 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,342 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393324392] [2020-10-19 22:24:20,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,344 INFO L87 Difference]: Start difference. First operand 539 states and 832 transitions. Second operand 3 states. [2020-10-19 22:24:20,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,503 INFO L93 Difference]: Finished difference Result 1112 states and 1713 transitions. [2020-10-19 22:24:20,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,504 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 62 [2020-10-19 22:24:20,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,507 INFO L225 Difference]: With dead ends: 1112 [2020-10-19 22:24:20,507 INFO L226 Difference]: Without dead ends: 581 [2020-10-19 22:24:20,510 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 22:24:20,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-19 22:24:20,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-10-19 22:24:20,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-19 22:24:20,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 874 transitions. [2020-10-19 22:24:20,534 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 874 transitions. Word has length 62 [2020-10-19 22:24:20,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,534 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 874 transitions. [2020-10-19 22:24:20,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,535 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 874 transitions. [2020-10-19 22:24:20,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-19 22:24:20,536 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,536 INFO L422 BasicCegarLoop]: trace histogram [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 22:24:20,536 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-19 22:24:20,537 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,537 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,537 INFO L82 PathProgramCache]: Analyzing trace with hash -394487435, now seen corresponding path program 1 times [2020-10-19 22:24:20,537 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,538 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738441936] [2020-10-19 22:24:20,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:20,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:20,569 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-19 22:24:20,570 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738441936] [2020-10-19 22:24:20,572 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [215044897] [2020-10-19 22:24:20,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,574 INFO L87 Difference]: Start difference. First operand 571 states and 874 transitions. Second operand 3 states. [2020-10-19 22:24:20,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,729 INFO L93 Difference]: Finished difference Result 1144 states and 1750 transitions. [2020-10-19 22:24:20,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,729 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-10-19 22:24:20,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,732 INFO L225 Difference]: With dead ends: 1144 [2020-10-19 22:24:20,733 INFO L226 Difference]: Without dead ends: 581 [2020-10-19 22:24:20,734 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 22:24:20,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2020-10-19 22:24:20,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 571. [2020-10-19 22:24:20,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 571 states. [2020-10-19 22:24:20,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 869 transitions. [2020-10-19 22:24:20,753 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 869 transitions. Word has length 63 [2020-10-19 22:24:20,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,753 INFO L481 AbstractCegarLoop]: Abstraction has 571 states and 869 transitions. [2020-10-19 22:24:20,753 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,753 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 869 transitions. [2020-10-19 22:24:20,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-19 22:24:20,755 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,755 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:20,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-19 22:24:20,755 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,756 INFO L82 PathProgramCache]: Analyzing trace with hash 408970087, now seen corresponding path program 1 times [2020-10-19 22:24:20,756 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898054034] [2020-10-19 22:24:20,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:20,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:20,784 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 29 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:24:20,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898054034] [2020-10-19 22:24:20,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:20,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:20,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062065217] [2020-10-19 22:24:20,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:20,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:20,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:20,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:20,787 INFO L87 Difference]: Start difference. First operand 571 states and 869 transitions. Second operand 3 states. [2020-10-19 22:24:20,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:20,967 INFO L93 Difference]: Finished difference Result 1181 states and 1794 transitions. [2020-10-19 22:24:20,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:20,967 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 74 [2020-10-19 22:24:20,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:20,971 INFO L225 Difference]: With dead ends: 1181 [2020-10-19 22:24:20,971 INFO L226 Difference]: Without dead ends: 618 [2020-10-19 22:24:20,972 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 22:24:20,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-19 22:24:20,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2020-10-19 22:24:20,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-19 22:24:20,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 930 transitions. [2020-10-19 22:24:20,992 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 930 transitions. Word has length 74 [2020-10-19 22:24:20,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:20,992 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 930 transitions. [2020-10-19 22:24:20,992 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:20,992 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 930 transitions. [2020-10-19 22:24:20,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-19 22:24:20,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:20,994 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:24:20,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-19 22:24:20,994 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:20,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:20,994 INFO L82 PathProgramCache]: Analyzing trace with hash -1646674903, now seen corresponding path program 1 times [2020-10-19 22:24:20,995 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:20,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375012140] [2020-10-19 22:24:20,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:21,023 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 22:24:21,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375012140] [2020-10-19 22:24:21,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:21,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:21,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317574354] [2020-10-19 22:24:21,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:21,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:21,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:21,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:21,025 INFO L87 Difference]: Start difference. First operand 614 states and 930 transitions. Second operand 3 states. [2020-10-19 22:24:21,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,190 INFO L93 Difference]: Finished difference Result 1224 states and 1852 transitions. [2020-10-19 22:24:21,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,191 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 75 [2020-10-19 22:24:21,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,195 INFO L225 Difference]: With dead ends: 1224 [2020-10-19 22:24:21,195 INFO L226 Difference]: Without dead ends: 618 [2020-10-19 22:24:21,197 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 22:24:21,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2020-10-19 22:24:21,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 614. [2020-10-19 22:24:21,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 614 states. [2020-10-19 22:24:21,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 614 states to 614 states and 927 transitions. [2020-10-19 22:24:21,229 INFO L78 Accepts]: Start accepts. Automaton has 614 states and 927 transitions. Word has length 75 [2020-10-19 22:24:21,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:21,229 INFO L481 AbstractCegarLoop]: Abstraction has 614 states and 927 transitions. [2020-10-19 22:24:21,229 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:21,230 INFO L276 IsEmpty]: Start isEmpty. Operand 614 states and 927 transitions. [2020-10-19 22:24:21,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-19 22:24:21,231 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:21,231 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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] [2020-10-19 22:24:21,232 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-19 22:24:21,232 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:21,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:21,232 INFO L82 PathProgramCache]: Analyzing trace with hash -1588112316, now seen corresponding path program 1 times [2020-10-19 22:24:21,233 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:21,233 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060742123] [2020-10-19 22:24:21,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:21,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:21,258 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 22:24:21,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060742123] [2020-10-19 22:24:21,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:21,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:21,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632704992] [2020-10-19 22:24:21,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:21,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:21,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:21,261 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:21,261 INFO L87 Difference]: Start difference. First operand 614 states and 927 transitions. Second operand 3 states. [2020-10-19 22:24:21,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,398 INFO L93 Difference]: Finished difference Result 1256 states and 1895 transitions. [2020-10-19 22:24:21,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,399 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 84 [2020-10-19 22:24:21,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,402 INFO L225 Difference]: With dead ends: 1256 [2020-10-19 22:24:21,403 INFO L226 Difference]: Without dead ends: 650 [2020-10-19 22:24:21,404 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 22:24:21,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-19 22:24:21,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 642. [2020-10-19 22:24:21,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-19 22:24:21,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 961 transitions. [2020-10-19 22:24:21,426 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 961 transitions. Word has length 84 [2020-10-19 22:24:21,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:21,427 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 961 transitions. [2020-10-19 22:24:21,427 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:21,427 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 961 transitions. [2020-10-19 22:24:21,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-19 22:24:21,429 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:21,429 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-19 22:24:21,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-19 22:24:21,430 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:21,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:21,430 INFO L82 PathProgramCache]: Analyzing trace with hash 474906507, now seen corresponding path program 1 times [2020-10-19 22:24:21,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:21,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437633571] [2020-10-19 22:24:21,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:21,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:21,465 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 22:24:21,465 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437633571] [2020-10-19 22:24:21,465 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:21,466 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:21,466 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111905646] [2020-10-19 22:24:21,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:21,467 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:21,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:21,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:21,468 INFO L87 Difference]: Start difference. First operand 642 states and 961 transitions. Second operand 3 states. [2020-10-19 22:24:21,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,669 INFO L93 Difference]: Finished difference Result 1284 states and 1922 transitions. [2020-10-19 22:24:21,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,670 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 85 [2020-10-19 22:24:21,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,675 INFO L225 Difference]: With dead ends: 1284 [2020-10-19 22:24:21,675 INFO L226 Difference]: Without dead ends: 650 [2020-10-19 22:24:21,677 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 22:24:21,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 650 states. [2020-10-19 22:24:21,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 650 to 642. [2020-10-19 22:24:21,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 642 states. [2020-10-19 22:24:21,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 954 transitions. [2020-10-19 22:24:21,705 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 954 transitions. Word has length 85 [2020-10-19 22:24:21,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:21,705 INFO L481 AbstractCegarLoop]: Abstraction has 642 states and 954 transitions. [2020-10-19 22:24:21,706 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:21,706 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 954 transitions. [2020-10-19 22:24:21,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-19 22:24:21,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:21,709 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-19 22:24:21,710 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:24:21,710 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:21,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:21,711 INFO L82 PathProgramCache]: Analyzing trace with hash -282694335, now seen corresponding path program 1 times [2020-10-19 22:24:21,711 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:21,711 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039391475] [2020-10-19 22:24:21,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:21,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:21,755 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 22:24:21,756 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039391475] [2020-10-19 22:24:21,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:21,757 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:21,757 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498554527] [2020-10-19 22:24:21,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:21,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:21,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:21,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:21,767 INFO L87 Difference]: Start difference. First operand 642 states and 954 transitions. Second operand 3 states. [2020-10-19 22:24:21,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:21,983 INFO L93 Difference]: Finished difference Result 1316 states and 1949 transitions. [2020-10-19 22:24:21,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:21,984 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 89 [2020-10-19 22:24:21,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:21,989 INFO L225 Difference]: With dead ends: 1316 [2020-10-19 22:24:21,989 INFO L226 Difference]: Without dead ends: 682 [2020-10-19 22:24:21,991 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 22:24:21,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-19 22:24:22,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 678. [2020-10-19 22:24:22,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-10-19 22:24:22,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 998 transitions. [2020-10-19 22:24:22,025 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 998 transitions. Word has length 89 [2020-10-19 22:24:22,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:22,025 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 998 transitions. [2020-10-19 22:24:22,025 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:22,026 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 998 transitions. [2020-10-19 22:24:22,028 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-10-19 22:24:22,028 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:22,029 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-19 22:24:22,029 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-19 22:24:22,029 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:22,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:22,030 INFO L82 PathProgramCache]: Analyzing trace with hash 1446327258, now seen corresponding path program 1 times [2020-10-19 22:24:22,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:22,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394532760] [2020-10-19 22:24:22,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:22,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:22,073 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-19 22:24:22,074 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394532760] [2020-10-19 22:24:22,074 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:22,074 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:22,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984615557] [2020-10-19 22:24:22,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:22,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:22,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:22,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:22,076 INFO L87 Difference]: Start difference. First operand 678 states and 998 transitions. Second operand 3 states. [2020-10-19 22:24:22,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:22,273 INFO L93 Difference]: Finished difference Result 1352 states and 1988 transitions. [2020-10-19 22:24:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:22,275 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 90 [2020-10-19 22:24:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:22,280 INFO L225 Difference]: With dead ends: 1352 [2020-10-19 22:24:22,280 INFO L226 Difference]: Without dead ends: 682 [2020-10-19 22:24:22,282 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 22:24:22,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 682 states. [2020-10-19 22:24:22,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 682 to 678. [2020-10-19 22:24:22,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-10-19 22:24:22,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 993 transitions. [2020-10-19 22:24:22,319 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 993 transitions. Word has length 90 [2020-10-19 22:24:22,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:22,319 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 993 transitions. [2020-10-19 22:24:22,320 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:22,320 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 993 transitions. [2020-10-19 22:24:22,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:24:22,323 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:22,323 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-19 22:24:22,323 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-19 22:24:22,324 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:22,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:22,325 INFO L82 PathProgramCache]: Analyzing trace with hash 1209412422, now seen corresponding path program 1 times [2020-10-19 22:24:22,325 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:22,325 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369522964] [2020-10-19 22:24:22,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:22,373 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-19 22:24:22,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369522964] [2020-10-19 22:24:22,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:22,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:22,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113175358] [2020-10-19 22:24:22,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:22,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:22,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:22,376 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:22,377 INFO L87 Difference]: Start difference. First operand 678 states and 993 transitions. Second operand 3 states. [2020-10-19 22:24:22,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:22,445 INFO L93 Difference]: Finished difference Result 2004 states and 2929 transitions. [2020-10-19 22:24:22,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:22,446 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-10-19 22:24:22,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:22,455 INFO L225 Difference]: With dead ends: 2004 [2020-10-19 22:24:22,455 INFO L226 Difference]: Without dead ends: 1334 [2020-10-19 22:24:22,457 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 22:24:22,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1334 states. [2020-10-19 22:24:22,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1334 to 680. [2020-10-19 22:24:22,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 680 states. [2020-10-19 22:24:22,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 680 states to 680 states and 995 transitions. [2020-10-19 22:24:22,526 INFO L78 Accepts]: Start accepts. Automaton has 680 states and 995 transitions. Word has length 101 [2020-10-19 22:24:22,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:22,527 INFO L481 AbstractCegarLoop]: Abstraction has 680 states and 995 transitions. [2020-10-19 22:24:22,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:22,527 INFO L276 IsEmpty]: Start isEmpty. Operand 680 states and 995 transitions. [2020-10-19 22:24:22,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-19 22:24:22,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:22,531 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-19 22:24:22,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-19 22:24:22,532 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:22,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:22,532 INFO L82 PathProgramCache]: Analyzing trace with hash -70451256, now seen corresponding path program 1 times [2020-10-19 22:24:22,533 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:22,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081876312] [2020-10-19 22:24:22,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:22,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:22,581 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-19 22:24:22,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081876312] [2020-10-19 22:24:22,582 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:22,583 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:22,583 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318602346] [2020-10-19 22:24:22,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:22,584 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:22,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:22,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:22,585 INFO L87 Difference]: Start difference. First operand 680 states and 995 transitions. Second operand 3 states. [2020-10-19 22:24:22,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:22,638 INFO L93 Difference]: Finished difference Result 1363 states and 1993 transitions. [2020-10-19 22:24:22,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:22,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 101 [2020-10-19 22:24:22,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:22,644 INFO L225 Difference]: With dead ends: 1363 [2020-10-19 22:24:22,644 INFO L226 Difference]: Without dead ends: 691 [2020-10-19 22:24:22,646 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 22:24:22,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-10-19 22:24:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 678. [2020-10-19 22:24:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 678 states. [2020-10-19 22:24:22,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 678 states to 678 states and 988 transitions. [2020-10-19 22:24:22,686 INFO L78 Accepts]: Start accepts. Automaton has 678 states and 988 transitions. Word has length 101 [2020-10-19 22:24:22,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:22,687 INFO L481 AbstractCegarLoop]: Abstraction has 678 states and 988 transitions. [2020-10-19 22:24:22,687 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:22,688 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states and 988 transitions. [2020-10-19 22:24:22,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:24:22,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:22,691 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-19 22:24:22,692 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-19 22:24:22,692 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:22,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:22,693 INFO L82 PathProgramCache]: Analyzing trace with hash 1334267025, now seen corresponding path program 1 times [2020-10-19 22:24:22,693 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:22,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281249159] [2020-10-19 22:24:22,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:22,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:24:22,763 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-19 22:24:22,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281249159] [2020-10-19 22:24:22,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:24:22,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:24:22,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068181457] [2020-10-19 22:24:22,765 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:24:22,765 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:24:22,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:24:22,765 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:24:22,765 INFO L87 Difference]: Start difference. First operand 678 states and 988 transitions. Second operand 3 states. [2020-10-19 22:24:22,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:24:22,885 INFO L93 Difference]: Finished difference Result 1989 states and 2896 transitions. [2020-10-19 22:24:22,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:24:22,886 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 102 [2020-10-19 22:24:22,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:24:22,894 INFO L225 Difference]: With dead ends: 1989 [2020-10-19 22:24:22,895 INFO L226 Difference]: Without dead ends: 1319 [2020-10-19 22:24:22,897 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 22:24:22,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1319 states. [2020-10-19 22:24:22,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1319 to 1317. [2020-10-19 22:24:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-10-19 22:24:22,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1903 transitions. [2020-10-19 22:24:22,982 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1903 transitions. Word has length 102 [2020-10-19 22:24:22,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:24:22,983 INFO L481 AbstractCegarLoop]: Abstraction has 1317 states and 1903 transitions. [2020-10-19 22:24:22,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:24:22,984 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1903 transitions. [2020-10-19 22:24:22,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-19 22:24:22,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:24:22,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-10-19 22:24:22,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-19 22:24:22,991 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:24:22,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:24:22,992 INFO L82 PathProgramCache]: Analyzing trace with hash 747461011, now seen corresponding path program 1 times [2020-10-19 22:24:22,992 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:24:22,992 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [20930177] [2020-10-19 22:24:22,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:24:23,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:24:23,038 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:24:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:24:23,085 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:24:23,195 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:24:23,196 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:24:23,196 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-19 22:24:23,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:24:23 BoogieIcfgContainer [2020-10-19 22:24:23,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:24:23,382 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:24:23,383 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:24:23,383 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:24:23,384 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:24:16" (3/4) ... [2020-10-19 22:24:23,386 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:24:23,544 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:24:23,545 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:24:23,547 INFO L168 Benchmark]: Toolchain (without parser) took 8621.14 ms. Allocated memory was 35.7 MB in the beginning and 110.1 MB in the end (delta: 74.4 MB). Free memory was 13.2 MB in the beginning and 74.8 MB in the end (delta: -61.6 MB). Peak memory consumption was 86.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,548 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 34.1 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 34.9 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,548 INFO L168 Benchmark]: CACSL2BoogieTranslator took 470.03 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 12.3 MB in the beginning and 21.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,549 INFO L168 Benchmark]: Boogie Procedure Inliner took 81.82 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 18.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,549 INFO L168 Benchmark]: Boogie Preprocessor took 42.96 ms. Allocated memory is still 44.0 MB. Free memory was 18.5 MB in the beginning and 16.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,550 INFO L168 Benchmark]: RCFGBuilder took 855.34 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 16.0 MB in the beginning and 11.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,550 INFO L168 Benchmark]: TraceAbstraction took 6996.13 ms. Allocated memory was 47.2 MB in the beginning and 110.1 MB in the end (delta: 62.9 MB). Free memory was 10.6 MB in the beginning and 6.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 66.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,550 INFO L168 Benchmark]: Witness Printer took 162.46 ms. Allocated memory is still 110.1 MB. Free memory was 6.9 MB in the beginning and 74.8 MB in the end (delta: -67.9 MB). Peak memory consumption was 5.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:24:23,554 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 34.1 MB. Free memory was 19.8 MB in the beginning and 19.8 MB in the end (delta: 34.9 kB). Peak memory consumption was 3.1 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 470.03 ms. Allocated memory was 35.7 MB in the beginning and 44.0 MB in the end (delta: 8.4 MB). Free memory was 12.3 MB in the beginning and 21.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 9.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 81.82 ms. Allocated memory is still 44.0 MB. Free memory was 21.7 MB in the beginning and 18.5 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 42.96 ms. Allocated memory is still 44.0 MB. Free memory was 18.5 MB in the beginning and 16.0 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * RCFGBuilder took 855.34 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 16.0 MB in the beginning and 11.0 MB in the end (delta: 5.0 MB). Peak memory consumption was 12.5 MB. Max. memory is 14.3 GB. * TraceAbstraction took 6996.13 ms. Allocated memory was 47.2 MB in the beginning and 110.1 MB in the end (delta: 62.9 MB). Free memory was 10.6 MB in the beginning and 6.9 MB in the end (delta: 3.8 MB). Peak memory consumption was 66.7 MB. Max. memory is 14.3 GB. * Witness Printer took 162.46 ms. Allocated memory is still 110.1 MB. Free memory was 6.9 MB in the beginning and 74.8 MB in the end (delta: -67.9 MB). Peak memory consumption was 5.6 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: [L649] int s ; [L650] int tmp ; [L654] s = 8464 [L13] int s__info_callback = __VERIFIER_nondet_int() ; [L14] int s__in_handshake = __VERIFIER_nondet_int() ; [L15] int s__state ; [L16] int s__new_session ; [L17] int s__server ; [L18] int s__version = __VERIFIER_nondet_int() ; [L19] int s__type ; [L20] int s__init_num ; [L21] int s__hit = __VERIFIER_nondet_int() ; [L22] int s__rwstate ; [L23] int s__init_buf___0 = 1; [L24] int s__debug = __VERIFIER_nondet_int() ; [L25] int s__shutdown ; [L26] int s__cert = __VERIFIER_nondet_int() ; [L27] int s__options = __VERIFIER_nondet_int() ; [L28] int s__verify_mode = __VERIFIER_nondet_int() ; [L29] int s__session__peer = __VERIFIER_nondet_int() ; [L30] int s__cert__pkeys__AT0__privatekey = __VERIFIER_nondet_int() ; [L31] int s__ctx__info_callback = __VERIFIER_nondet_int() ; [L32] int s__ctx__stats__sess_accept_renegotiate = __VERIFIER_nondet_int() ; [L33] int s__ctx__stats__sess_accept = __VERIFIER_nondet_int() ; [L34] int s__ctx__stats__sess_accept_good = __VERIFIER_nondet_int() ; [L35] int s__s3__tmp__cert_request ; [L36] int s__s3__tmp__reuse_message ; [L37] int s__s3__tmp__use_rsa_tmp ; [L38] int s__s3__tmp__new_cipher = __VERIFIER_nondet_int() ; [L39] int s__s3__tmp__new_cipher__algorithms ; [L40] int s__s3__tmp__next_state___0 ; [L41] int s__s3__tmp__new_cipher__algo_strength ; [L42] int s__session__cipher ; [L43] int buf ; [L44] unsigned long l ; [L45] unsigned long Time ; [L46] unsigned long tmp ; [L47] int cb ; [L48] long num1 = __VERIFIER_nondet_long() ; [L49] int ret ; [L50] int new_state ; [L51] int state ; [L52] int skip ; [L53] int got_new_session ; [L54] int tmp___1 = __VERIFIER_nondet_int() ; [L55] int tmp___2 = __VERIFIER_nondet_int() ; [L56] int tmp___3 = __VERIFIER_nondet_int() ; [L57] int tmp___4 = __VERIFIER_nondet_int() ; [L58] int tmp___5 = __VERIFIER_nondet_int() ; [L59] int tmp___6 = __VERIFIER_nondet_int() ; [L60] int tmp___7 = __VERIFIER_nondet_int() ; [L61] long tmp___8 = __VERIFIER_nondet_long() ; [L62] int tmp___9 = __VERIFIER_nondet_int() ; [L63] int tmp___10 = __VERIFIER_nondet_int() ; [L64] int blastFlag ; [L65] int __cil_tmp55 ; [L66] unsigned long __cil_tmp56 ; [L67] unsigned long __cil_tmp57 ; [L68] unsigned long __cil_tmp58 ; [L69] unsigned long __cil_tmp59 ; [L70] int __cil_tmp60 ; [L71] unsigned long __cil_tmp61 ; [L74] s__state = initial_state [L75] blastFlag = 0 [L76] tmp = __VERIFIER_nondet_int() [L77] Time = tmp [L78] cb = 0 [L79] ret = -1 [L80] skip = 0 [L81] got_new_session = 0 [L82] COND TRUE s__info_callback != 0 [L83] cb = s__info_callback [L89] s__in_handshake ++ [L90] COND FALSE !(tmp___1 + 12288) [L95] COND FALSE !(s__cert == 0) [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND TRUE s__state == 8464 [L272] s__shutdown = 0 [L273] ret = __VERIFIER_nondet_int() [L274] COND TRUE blastFlag == 0 [L275] blastFlag = 1 [L277] COND FALSE !(ret <= 0) [L280] got_new_session = 1 [L281] s__state = 8496 [L282] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND TRUE s__state == 8496 [L286] ret = __VERIFIER_nondet_int() [L287] COND TRUE blastFlag == 1 [L288] blastFlag = 2 [L290] COND FALSE !(ret <= 0) [L293] COND FALSE !(\read(s__hit)) [L296] s__state = 8512 [L298] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND TRUE s__state == 8512 [L303] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L304] __cil_tmp56 = (unsigned long )s__s3__tmp__new_cipher__algorithms [L305] COND TRUE __cil_tmp56 + 256UL [L306] skip = 1 [L317] s__state = 8528 [L318] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND FALSE !(! s__s3__tmp__reuse_message) [L633] skip = 0 [L99] COND TRUE 1 [L101] state = s__state [L102] COND FALSE !(s__state == 12292) [L105] COND FALSE !(s__state == 16384) [L108] COND FALSE !(s__state == 8192) [L111] COND FALSE !(s__state == 24576) [L114] COND FALSE !(s__state == 8195) [L117] COND FALSE !(s__state == 8480) [L120] COND FALSE !(s__state == 8481) [L123] COND FALSE !(s__state == 8482) [L126] COND FALSE !(s__state == 8464) [L129] COND FALSE !(s__state == 8465) [L132] COND FALSE !(s__state == 8466) [L135] COND FALSE !(s__state == 8496) [L138] COND FALSE !(s__state == 8497) [L141] COND FALSE !(s__state == 8512) [L144] COND FALSE !(s__state == 8513) [L147] COND TRUE s__state == 8528 [L322] s__s3__tmp__new_cipher__algorithms = __VERIFIER_nondet_int() [L323] l = (unsigned long )s__s3__tmp__new_cipher__algorithms [L325] __cil_tmp57 = (unsigned long )s__options [L326] COND TRUE __cil_tmp57 + 2097152UL [L327] s__s3__tmp__use_rsa_tmp = 1 [L332] COND TRUE \read(s__s3__tmp__use_rsa_tmp) [L359] ret = __VERIFIER_nondet_int() [L360] COND FALSE !(blastFlag == 6) [L363] COND FALSE !(ret <= 0) [L380] s__state = 8544 [L381] s__init_num = 0 [L601] s__s3__tmp__reuse_message = __VERIFIER_nondet_int() [L602] COND TRUE ! s__s3__tmp__reuse_message [L603] COND TRUE ! skip [L604] COND TRUE state == 8528 [L605] COND TRUE s__state == 8544 [L606] COND TRUE tmp___7 != 1024 [L607] COND TRUE tmp___7 != 512 [L608] COND TRUE __cil_tmp58 != 4294967294 [L609] COND TRUE l != 4294967266 [L3] __assert_fail("0", "s3_srvr_13.cil.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 154 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 6.7s, OverallIterations: 26, TraceHistogramMax: 4, AutomataDifference: 4.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 4418 SDtfs, 4358 SDslu, 1315 SDs, 0 SdLazy, 2050 SolverSat, 916 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 77 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1317occurred in iteration=25, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.6s AutomataMinimizationTime, 25 MinimizatonAttempts, 865 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1523 NumberOfCodeBlocks, 1523 NumberOfCodeBlocksAsserted, 26 NumberOfCheckSat, 1396 ConstructedInterpolants, 0 QuantifiedInterpolants, 183768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 25 PerfectInterpolantSequences, 646/646 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...