./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 54858612 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/bitvector/soft_float_2a.c.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 09f813c788ce76f2fed6ff9e53c54c81ca842bfc ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-5485861 [2020-10-25 19:36:40,986 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-25 19:36:40,996 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-25 19:36:41,029 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-25 19:36:41,030 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-25 19:36:41,031 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-25 19:36:41,033 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-25 19:36:41,035 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-25 19:36:41,038 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-25 19:36:41,039 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-25 19:36:41,040 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-25 19:36:41,042 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-25 19:36:41,042 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-25 19:36:41,044 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-25 19:36:41,045 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-25 19:36:41,046 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-25 19:36:41,047 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-25 19:36:41,049 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-25 19:36:41,051 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-25 19:36:41,060 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-25 19:36:41,062 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-25 19:36:41,063 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-25 19:36:41,065 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-25 19:36:41,066 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-25 19:36:41,069 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-25 19:36:41,069 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-25 19:36:41,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-25 19:36:41,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-25 19:36:41,071 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-25 19:36:41,072 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-25 19:36:41,073 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-25 19:36:41,074 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-25 19:36:41,075 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-25 19:36:41,076 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-25 19:36:41,077 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-25 19:36:41,077 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-25 19:36:41,078 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-25 19:36:41,079 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-25 19:36:41,079 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-25 19:36:41,080 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-25 19:36:41,081 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-25 19:36:41,082 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-25 19:36:41,120 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-25 19:36:41,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-25 19:36:41,123 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-25 19:36:41,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-25 19:36:41,124 INFO L138 SettingsManager]: * Use SBE=true [2020-10-25 19:36:41,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-25 19:36:41,125 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-25 19:36:41,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-25 19:36:41,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-25 19:36:41,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-25 19:36:41,127 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-25 19:36:41,127 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-25 19:36:41,127 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-25 19:36:41,128 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-25 19:36:41,128 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-25 19:36:41,128 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-25 19:36:41,129 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-25 19:36:41,129 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-25 19:36:41,129 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-25 19:36:41,129 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-25 19:36:41,130 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-25 19:36:41,130 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-25 19:36:41,130 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-25 19:36:41,130 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-25 19:36:41,131 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-25 19:36:41,131 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-25 19:36:41,131 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-25 19:36:41,131 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-25 19:36:41,132 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-25 19:36:41,132 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2020-10-25 19:36:41,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-25 19:36:41,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-25 19:36:41,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-25 19:36:41,582 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-25 19:36:41,585 INFO L275 PluginConnector]: CDTParser initialized [2020-10-25 19:36:41,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-25 19:36:41,682 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98842996b/da72ddd901ac4c0da44885e2cb619e54/FLAG9526e500b [2020-10-25 19:36:42,376 INFO L306 CDTParser]: Found 1 translation units. [2020-10-25 19:36:42,376 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-25 19:36:42,392 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98842996b/da72ddd901ac4c0da44885e2cb619e54/FLAG9526e500b [2020-10-25 19:36:42,737 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/98842996b/da72ddd901ac4c0da44885e2cb619e54 [2020-10-25 19:36:42,740 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-25 19:36:42,748 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-25 19:36:42,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:42,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-25 19:36:42,757 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-25 19:36:42,758 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:42" (1/1) ... [2020-10-25 19:36:42,761 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e6fee23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:42, skipping insertion in model container [2020-10-25 19:36:42,762 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.10 07:36:42" (1/1) ... [2020-10-25 19:36:42,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-25 19:36:42,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-25 19:36:43,076 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:43,088 INFO L203 MainTranslator]: Completed pre-run [2020-10-25 19:36:43,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-25 19:36:43,163 INFO L208 MainTranslator]: Completed translation [2020-10-25 19:36:43,164 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43 WrapperNode [2020-10-25 19:36:43,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-25 19:36:43,166 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:43,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-25 19:36:43,167 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-25 19:36:43,177 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,189 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,225 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-25 19:36:43,226 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-25 19:36:43,226 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-25 19:36:43,226 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-25 19:36:43,238 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,251 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,264 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (1/1) ... [2020-10-25 19:36:43,268 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-25 19:36:43,270 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-25 19:36:43,270 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-25 19:36:43,270 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-25 19:36:43,271 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (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 [2020-10-25 19:36:43,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-25 19:36:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-25 19:36:43,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-25 19:36:43,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-25 19:36:44,353 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-25 19:36:44,354 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-25 19:36:44,356 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:44 BoogieIcfgContainer [2020-10-25 19:36:44,356 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-25 19:36:44,358 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-25 19:36:44,358 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-25 19:36:44,362 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-25 19:36:44,363 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.10 07:36:42" (1/3) ... [2020-10-25 19:36:44,364 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72dd8dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:44, skipping insertion in model container [2020-10-25 19:36:44,364 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.10 07:36:43" (2/3) ... [2020-10-25 19:36:44,365 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@72dd8dd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.10 07:36:44, skipping insertion in model container [2020-10-25 19:36:44,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:44" (3/3) ... [2020-10-25 19:36:44,368 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-25 19:36:44,383 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-25 19:36:44,389 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-25 19:36:44,404 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-25 19:36:44,434 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-25 19:36:44,434 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-25 19:36:44,435 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-25 19:36:44,435 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-25 19:36:44,435 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-25 19:36:44,435 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-25 19:36:44,435 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-25 19:36:44,435 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-25 19:36:44,458 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-25 19:36:44,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-25 19:36:44,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:44,467 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] [2020-10-25 19:36:44,467 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:44,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:44,474 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-10-25 19:36:44,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:44,486 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444556918] [2020-10-25 19:36:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:44,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:44,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:44,801 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444556918] [2020-10-25 19:36:44,802 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:44,802 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:36:44,804 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299433592] [2020-10-25 19:36:44,809 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:36:44,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:44,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:36:44,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:36:44,834 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-25 19:36:44,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:44,897 INFO L93 Difference]: Finished difference Result 151 states and 252 transitions. [2020-10-25 19:36:44,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:36:44,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-25 19:36:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:44,917 INFO L225 Difference]: With dead ends: 151 [2020-10-25 19:36:44,917 INFO L226 Difference]: Without dead ends: 68 [2020-10-25 19:36:44,922 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 [2020-10-25 19:36:44,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-25 19:36:44,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-25 19:36:44,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-25 19:36:44,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-10-25 19:36:44,972 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-10-25 19:36:44,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:44,972 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-10-25 19:36:44,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:36:44,973 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-10-25 19:36:44,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 19:36:44,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:44,974 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] [2020-10-25 19:36:44,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-25 19:36:44,975 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:44,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:44,976 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-10-25 19:36:44,976 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:44,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833355506] [2020-10-25 19:36:44,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:45,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:45,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:45,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833355506] [2020-10-25 19:36:45,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:45,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:36:45,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217959644] [2020-10-25 19:36:45,085 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:36:45,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:45,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:36:45,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:36:45,087 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-10-25 19:36:45,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:45,195 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-10-25 19:36:45,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:36:45,196 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-25 19:36:45,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:45,199 INFO L225 Difference]: With dead ends: 88 [2020-10-25 19:36:45,199 INFO L226 Difference]: Without dead ends: 68 [2020-10-25 19:36:45,200 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 [2020-10-25 19:36:45,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-25 19:36:45,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-25 19:36:45,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-25 19:36:45,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-10-25 19:36:45,213 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-10-25 19:36:45,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:45,213 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-10-25 19:36:45,213 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:36:45,213 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-10-25 19:36:45,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-25 19:36:45,215 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:45,215 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] [2020-10-25 19:36:45,216 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-25 19:36:45,216 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:45,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:45,217 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-10-25 19:36:45,218 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:45,218 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818870426] [2020-10-25 19:36:45,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:45,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:45,322 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:45,323 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818870426] [2020-10-25 19:36:45,323 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:45,323 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:36:45,323 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238365831] [2020-10-25 19:36:45,324 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:36:45,324 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:45,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:36:45,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:36:45,325 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-10-25 19:36:45,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:45,500 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-10-25 19:36:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:36:45,501 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-25 19:36:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:45,503 INFO L225 Difference]: With dead ends: 119 [2020-10-25 19:36:45,503 INFO L226 Difference]: Without dead ends: 69 [2020-10-25 19:36:45,504 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 [2020-10-25 19:36:45,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-25 19:36:45,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-25 19:36:45,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-25 19:36:45,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-10-25 19:36:45,514 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-10-25 19:36:45,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:45,515 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-10-25 19:36:45,515 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:36:45,515 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-10-25 19:36:45,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-25 19:36:45,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:45,520 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] [2020-10-25 19:36:45,520 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-25 19:36:45,520 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:45,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:45,521 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-10-25 19:36:45,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:45,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1819907691] [2020-10-25 19:36:45,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:45,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:45,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:45,573 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1819907691] [2020-10-25 19:36:45,573 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:45,573 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:36:45,573 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758576949] [2020-10-25 19:36:45,574 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:36:45,574 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:45,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:36:45,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:36:45,576 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-10-25 19:36:45,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:45,647 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-10-25 19:36:45,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:36:45,649 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-25 19:36:45,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:45,650 INFO L225 Difference]: With dead ends: 129 [2020-10-25 19:36:45,651 INFO L226 Difference]: Without dead ends: 75 [2020-10-25 19:36:45,652 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 [2020-10-25 19:36:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-25 19:36:45,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-10-25 19:36:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-25 19:36:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-10-25 19:36:45,663 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-10-25 19:36:45,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:45,663 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-10-25 19:36:45,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:36:45,663 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-10-25 19:36:45,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-25 19:36:45,665 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:45,665 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] [2020-10-25 19:36:45,665 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-25 19:36:45,666 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:45,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:45,667 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-10-25 19:36:45,667 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:45,667 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [690412206] [2020-10-25 19:36:45,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:45,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:45,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:45,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [690412206] [2020-10-25 19:36:45,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:45,812 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-25 19:36:45,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219449644] [2020-10-25 19:36:45,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-25 19:36:45,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:45,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-25 19:36:45,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:36:45,815 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-10-25 19:36:46,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:46,001 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-10-25 19:36:46,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-25 19:36:46,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-25 19:36:46,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:46,004 INFO L225 Difference]: With dead ends: 136 [2020-10-25 19:36:46,004 INFO L226 Difference]: Without dead ends: 73 [2020-10-25 19:36:46,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-25 19:36:46,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-25 19:36:46,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-10-25 19:36:46,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-25 19:36:46,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-10-25 19:36:46,015 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-10-25 19:36:46,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:46,015 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-10-25 19:36:46,015 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-25 19:36:46,015 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-10-25 19:36:46,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-25 19:36:46,017 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:46,017 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:46,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-25 19:36:46,018 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:46,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:46,019 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-10-25 19:36:46,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:46,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877337144] [2020-10-25 19:36:46,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:46,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:46,086 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:46,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877337144] [2020-10-25 19:36:46,087 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [588907860] [2020-10-25 19:36:46,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:46,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-25 19:36:46,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:46,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:46,290 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:46,290 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-25 19:36:46,290 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136914266] [2020-10-25 19:36:46,291 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:46,291 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:46,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:46,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:46,293 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-10-25 19:36:46,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:46,421 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-10-25 19:36:46,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:36:46,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-25 19:36:46,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:46,425 INFO L225 Difference]: With dead ends: 160 [2020-10-25 19:36:46,425 INFO L226 Difference]: Without dead ends: 103 [2020-10-25 19:36:46,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:46,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-25 19:36:46,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-25 19:36:46,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-25 19:36:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-10-25 19:36:46,441 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-10-25 19:36:46,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:46,441 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-10-25 19:36:46,441 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-10-25 19:36:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-25 19:36:46,443 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:46,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:46,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-25 19:36:46,657 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:46,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:46,659 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-10-25 19:36:46,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:46,660 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487639442] [2020-10-25 19:36:46,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:46,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:46,872 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:46,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487639442] [2020-10-25 19:36:46,873 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1754972402] [2020-10-25 19:36:46,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:47,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:47,005 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 19:36:47,010 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:47,152 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:47,153 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:47,153 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-25 19:36:47,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881024609] [2020-10-25 19:36:47,154 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:47,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:47,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:47,156 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:47,156 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2020-10-25 19:36:47,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:47,348 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2020-10-25 19:36:47,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:47,349 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-25 19:36:47,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:47,350 INFO L225 Difference]: With dead ends: 126 [2020-10-25 19:36:47,350 INFO L226 Difference]: Without dead ends: 79 [2020-10-25 19:36:47,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:47,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-25 19:36:47,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-10-25 19:36:47,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-25 19:36:47,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2020-10-25 19:36:47,359 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 35 [2020-10-25 19:36:47,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:47,360 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2020-10-25 19:36:47,360 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:47,360 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2020-10-25 19:36:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-25 19:36:47,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:47,362 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-25 19:36:47,576 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:47,577 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:47,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:47,578 INFO L82 PathProgramCache]: Analyzing trace with hash -2010695315, now seen corresponding path program 2 times [2020-10-25 19:36:47,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:47,579 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102346079] [2020-10-25 19:36:47,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:47,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:47,646 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:47,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2102346079] [2020-10-25 19:36:47,646 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1339415081] [2020-10-25 19:36:47,646 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:47,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-25 19:36:47,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:36:47,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:36:47,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:47,867 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-25 19:36:47,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:36:47,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-10-25 19:36:47,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269615592] [2020-10-25 19:36:47,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:47,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:47,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:47,870 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:47,870 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 6 states. [2020-10-25 19:36:48,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:48,340 INFO L93 Difference]: Finished difference Result 265 states and 356 transitions. [2020-10-25 19:36:48,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-25 19:36:48,341 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-25 19:36:48,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:48,344 INFO L225 Difference]: With dead ends: 265 [2020-10-25 19:36:48,344 INFO L226 Difference]: Without dead ends: 261 [2020-10-25 19:36:48,345 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-25 19:36:48,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-25 19:36:48,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 127. [2020-10-25 19:36:48,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-25 19:36:48,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-10-25 19:36:48,384 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 36 [2020-10-25 19:36:48,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:48,386 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-10-25 19:36:48,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-10-25 19:36:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-25 19:36:48,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:48,388 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-25 19:36:48,599 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:48,600 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:48,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:48,602 INFO L82 PathProgramCache]: Analyzing trace with hash 508659463, now seen corresponding path program 1 times [2020-10-25 19:36:48,602 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:48,603 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1495037459] [2020-10-25 19:36:48,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:48,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:48,665 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:48,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1495037459] [2020-10-25 19:36:48,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1209960404] [2020-10-25 19:36:48,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:48,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-25 19:36:48,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:48,817 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:48,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:48,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-25 19:36:48,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386472866] [2020-10-25 19:36:48,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:48,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:48,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:48,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:48,832 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 6 states. [2020-10-25 19:36:48,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:48,930 INFO L93 Difference]: Finished difference Result 288 states and 395 transitions. [2020-10-25 19:36:48,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:48,931 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-25 19:36:48,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:48,933 INFO L225 Difference]: With dead ends: 288 [2020-10-25 19:36:48,933 INFO L226 Difference]: Without dead ends: 188 [2020-10-25 19:36:48,936 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-25 19:36:48,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-25 19:36:48,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 134. [2020-10-25 19:36:48,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-25 19:36:48,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 182 transitions. [2020-10-25 19:36:48,955 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 182 transitions. Word has length 38 [2020-10-25 19:36:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:48,956 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 182 transitions. [2020-10-25 19:36:48,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:48,959 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 182 transitions. [2020-10-25 19:36:48,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-25 19:36:48,970 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:48,970 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:49,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:49,184 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:49,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:49,185 INFO L82 PathProgramCache]: Analyzing trace with hash 1319305574, now seen corresponding path program 1 times [2020-10-25 19:36:49,185 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:49,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610237588] [2020-10-25 19:36:49,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610237588] [2020-10-25 19:36:49,297 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746985580] [2020-10-25 19:36:49,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:49,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:49,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 19:36:49,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:49,454 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:49,454 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-25 19:36:49,454 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062815396] [2020-10-25 19:36:49,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:49,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:49,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:49,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:49,456 INFO L87 Difference]: Start difference. First operand 134 states and 182 transitions. Second operand 7 states. [2020-10-25 19:36:49,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:49,717 INFO L93 Difference]: Finished difference Result 234 states and 325 transitions. [2020-10-25 19:36:49,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:36:49,719 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-25 19:36:49,719 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:49,721 INFO L225 Difference]: With dead ends: 234 [2020-10-25 19:36:49,721 INFO L226 Difference]: Without dead ends: 146 [2020-10-25 19:36:49,722 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 38 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:49,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-25 19:36:49,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2020-10-25 19:36:49,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-25 19:36:49,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2020-10-25 19:36:49,735 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 40 [2020-10-25 19:36:49,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:49,736 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2020-10-25 19:36:49,736 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:49,736 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2020-10-25 19:36:49,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-25 19:36:49,737 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:49,737 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:49,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-25 19:36:49,952 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:49,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:49,952 INFO L82 PathProgramCache]: Analyzing trace with hash -976708544, now seen corresponding path program 2 times [2020-10-25 19:36:49,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:49,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599395351] [2020-10-25 19:36:49,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:49,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:50,016 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [599395351] [2020-10-25 19:36:50,019 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1214005075] [2020-10-25 19:36:50,020 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:50,087 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-25 19:36:50,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:36:50,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 19:36:50,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:50,122 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-25 19:36:50,122 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:36:50,122 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-10-25 19:36:50,123 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264547369] [2020-10-25 19:36:50,123 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:50,123 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:50,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:50,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:50,124 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand 5 states. [2020-10-25 19:36:50,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:50,185 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2020-10-25 19:36:50,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:36:50,186 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-25 19:36:50,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:50,187 INFO L225 Difference]: With dead ends: 155 [2020-10-25 19:36:50,187 INFO L226 Difference]: Without dead ends: 150 [2020-10-25 19:36:50,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-10-25 19:36:50,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-25 19:36:50,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2020-10-25 19:36:50,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-25 19:36:50,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 194 transitions. [2020-10-25 19:36:50,197 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 194 transitions. Word has length 41 [2020-10-25 19:36:50,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:50,197 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 194 transitions. [2020-10-25 19:36:50,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:50,198 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 194 transitions. [2020-10-25 19:36:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-25 19:36:50,198 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:50,198 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:50,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:50,413 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:50,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:50,414 INFO L82 PathProgramCache]: Analyzing trace with hash -974861502, now seen corresponding path program 1 times [2020-10-25 19:36:50,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:50,415 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722001381] [2020-10-25 19:36:50,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:50,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:50,467 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-25 19:36:50,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722001381] [2020-10-25 19:36:50,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:50,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-25 19:36:50,468 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1004005383] [2020-10-25 19:36:50,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-25 19:36:50,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:50,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-25 19:36:50,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-25 19:36:50,469 INFO L87 Difference]: Start difference. First operand 145 states and 194 transitions. Second operand 5 states. [2020-10-25 19:36:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:50,520 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2020-10-25 19:36:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-25 19:36:50,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-25 19:36:50,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:50,522 INFO L225 Difference]: With dead ends: 150 [2020-10-25 19:36:50,522 INFO L226 Difference]: Without dead ends: 140 [2020-10-25 19:36:50,523 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:50,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-25 19:36:50,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-25 19:36:50,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-25 19:36:50,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-10-25 19:36:50,533 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 41 [2020-10-25 19:36:50,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:50,533 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-10-25 19:36:50,533 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-25 19:36:50,533 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-10-25 19:36:50,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-25 19:36:50,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:50,535 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:50,535 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-25 19:36:50,535 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:50,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:50,536 INFO L82 PathProgramCache]: Analyzing trace with hash -543462300, now seen corresponding path program 1 times [2020-10-25 19:36:50,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:50,536 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85421081] [2020-10-25 19:36:50,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:50,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85421081] [2020-10-25 19:36:50,628 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1830980520] [2020-10-25 19:36:50,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:50,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-25 19:36:50,708 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:50,729 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:50,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:50,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-25 19:36:50,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1103102612] [2020-10-25 19:36:50,730 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:50,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:50,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:50,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:50,731 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 7 states. [2020-10-25 19:36:50,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:50,822 INFO L93 Difference]: Finished difference Result 315 states and 414 transitions. [2020-10-25 19:36:50,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-25 19:36:50,823 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-25 19:36:50,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:50,824 INFO L225 Difference]: With dead ends: 315 [2020-10-25 19:36:50,825 INFO L226 Difference]: Without dead ends: 208 [2020-10-25 19:36:50,825 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-25 19:36:50,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-25 19:36:50,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2020-10-25 19:36:50,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-25 19:36:50,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2020-10-25 19:36:50,835 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 42 [2020-10-25 19:36:50,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:50,835 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2020-10-25 19:36:50,835 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:50,835 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2020-10-25 19:36:50,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-25 19:36:50,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:50,836 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:51,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:51,050 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:51,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:51,051 INFO L82 PathProgramCache]: Analyzing trace with hash -1931714523, now seen corresponding path program 1 times [2020-10-25 19:36:51,051 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:51,051 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418267555] [2020-10-25 19:36:51,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:51,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:51,218 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:51,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418267555] [2020-10-25 19:36:51,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2030736816] [2020-10-25 19:36:51,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:51,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:51,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-25 19:36:51,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:51,394 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:51,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:51,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-25 19:36:51,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479320631] [2020-10-25 19:36:51,396 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 19:36:51,396 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:51,396 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 19:36:51,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:51,397 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand 8 states. [2020-10-25 19:36:51,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:51,691 INFO L93 Difference]: Finished difference Result 251 states and 337 transitions. [2020-10-25 19:36:51,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:36:51,692 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-25 19:36:51,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:51,693 INFO L225 Difference]: With dead ends: 251 [2020-10-25 19:36:51,693 INFO L226 Difference]: Without dead ends: 159 [2020-10-25 19:36:51,694 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:51,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-25 19:36:51,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-10-25 19:36:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-25 19:36:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-10-25 19:36:51,703 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 44 [2020-10-25 19:36:51,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:51,703 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-10-25 19:36:51,703 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 19:36:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-10-25 19:36:51,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-25 19:36:51,704 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:51,704 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:51,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-25 19:36:51,918 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:51,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:51,919 INFO L82 PathProgramCache]: Analyzing trace with hash 514014493, now seen corresponding path program 2 times [2020-10-25 19:36:51,919 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:51,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991645261] [2020-10-25 19:36:51,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:51,995 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:51,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991645261] [2020-10-25 19:36:51,995 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1626721349] [2020-10-25 19:36:51,996 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:52,063 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-25 19:36:52,063 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:36:52,065 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-25 19:36:52,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:52,129 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-25 19:36:52,129 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:36:52,129 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-10-25 19:36:52,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [452922727] [2020-10-25 19:36:52,130 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-25 19:36:52,130 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:52,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-25 19:36:52,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-25 19:36:52,131 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 6 states. [2020-10-25 19:36:52,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:52,254 INFO L93 Difference]: Finished difference Result 211 states and 269 transitions. [2020-10-25 19:36:52,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-25 19:36:52,255 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-25 19:36:52,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:52,256 INFO L225 Difference]: With dead ends: 211 [2020-10-25 19:36:52,257 INFO L226 Difference]: Without dead ends: 171 [2020-10-25 19:36:52,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-25 19:36:52,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-25 19:36:52,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 157. [2020-10-25 19:36:52,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-25 19:36:52,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 201 transitions. [2020-10-25 19:36:52,267 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 201 transitions. Word has length 45 [2020-10-25 19:36:52,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:52,267 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 201 transitions. [2020-10-25 19:36:52,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-25 19:36:52,267 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 201 transitions. [2020-10-25 19:36:52,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-25 19:36:52,268 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:52,268 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:52,482 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-25 19:36:52,483 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:52,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:52,484 INFO L82 PathProgramCache]: Analyzing trace with hash 1892120530, now seen corresponding path program 1 times [2020-10-25 19:36:52,484 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:52,484 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408110913] [2020-10-25 19:36:52,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:52,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:52,546 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:52,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408110913] [2020-10-25 19:36:52,547 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1587846905] [2020-10-25 19:36:52,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:52,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:52,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-25 19:36:52,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:52,646 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:52,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:52,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-25 19:36:52,647 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409073201] [2020-10-25 19:36:52,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 19:36:52,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:52,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 19:36:52,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:52,649 INFO L87 Difference]: Start difference. First operand 157 states and 201 transitions. Second operand 8 states. [2020-10-25 19:36:52,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:52,764 INFO L93 Difference]: Finished difference Result 346 states and 442 transitions. [2020-10-25 19:36:52,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-25 19:36:52,764 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-25 19:36:52,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:52,766 INFO L225 Difference]: With dead ends: 346 [2020-10-25 19:36:52,766 INFO L226 Difference]: Without dead ends: 228 [2020-10-25 19:36:52,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-25 19:36:52,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-25 19:36:52,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 164. [2020-10-25 19:36:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-25 19:36:52,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2020-10-25 19:36:52,782 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 49 [2020-10-25 19:36:52,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:52,782 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2020-10-25 19:36:52,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 19:36:52,782 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2020-10-25 19:36:52,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-25 19:36:52,783 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:52,783 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:52,998 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-25 19:36:52,999 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:52,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:53,000 INFO L82 PathProgramCache]: Analyzing trace with hash -260802349, now seen corresponding path program 1 times [2020-10-25 19:36:53,001 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:53,001 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1633021503] [2020-10-25 19:36:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:53,117 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:53,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1633021503] [2020-10-25 19:36:53,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027466998] [2020-10-25 19:36:53,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:53,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:53,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-25 19:36:53,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:53,301 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:53,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:53,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-25 19:36:53,302 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17190673] [2020-10-25 19:36:53,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:36:53,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:53,303 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:36:53,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:53,303 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand 9 states. [2020-10-25 19:36:53,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:53,592 INFO L93 Difference]: Finished difference Result 276 states and 359 transitions. [2020-10-25 19:36:53,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 19:36:53,593 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-25 19:36:53,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:53,594 INFO L225 Difference]: With dead ends: 276 [2020-10-25 19:36:53,594 INFO L226 Difference]: Without dead ends: 176 [2020-10-25 19:36:53,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 47 SyntacticMatches, 4 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:53,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-25 19:36:53,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2020-10-25 19:36:53,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-25 19:36:53,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2020-10-25 19:36:53,604 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 51 [2020-10-25 19:36:53,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:53,604 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2020-10-25 19:36:53,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:36:53,604 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2020-10-25 19:36:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-25 19:36:53,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:53,605 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:53,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-25 19:36:53,821 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:53,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:53,822 INFO L82 PathProgramCache]: Analyzing trace with hash -1844505351, now seen corresponding path program 2 times [2020-10-25 19:36:53,822 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:53,822 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088422694] [2020-10-25 19:36:53,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:53,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:53,891 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:53,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088422694] [2020-10-25 19:36:53,891 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1211145958] [2020-10-25 19:36:53,891 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:53,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-25 19:36:53,964 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:36:53,965 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-25 19:36:53,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:54,042 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-25 19:36:54,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:36:54,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2020-10-25 19:36:54,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1479982906] [2020-10-25 19:36:54,043 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-25 19:36:54,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:54,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-25 19:36:54,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-25 19:36:54,045 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand 7 states. [2020-10-25 19:36:54,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:54,281 INFO L93 Difference]: Finished difference Result 222 states and 273 transitions. [2020-10-25 19:36:54,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 19:36:54,282 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-25 19:36:54,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:54,283 INFO L225 Difference]: With dead ends: 222 [2020-10-25 19:36:54,284 INFO L226 Difference]: Without dead ends: 186 [2020-10-25 19:36:54,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-10-25 19:36:54,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-25 19:36:54,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2020-10-25 19:36:54,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-25 19:36:54,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 207 transitions. [2020-10-25 19:36:54,294 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 207 transitions. Word has length 52 [2020-10-25 19:36:54,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:54,295 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 207 transitions. [2020-10-25 19:36:54,295 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-25 19:36:54,295 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 207 transitions. [2020-10-25 19:36:54,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-25 19:36:54,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:54,296 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:54,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-25 19:36:54,512 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:54,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:54,512 INFO L82 PathProgramCache]: Analyzing trace with hash 365328708, now seen corresponding path program 1 times [2020-10-25 19:36:54,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:54,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1832056380] [2020-10-25 19:36:54,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:54,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:54,581 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:54,581 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1832056380] [2020-10-25 19:36:54,582 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1561955328] [2020-10-25 19:36:54,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:54,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:54,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-25 19:36:54,658 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:54,683 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:54,684 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:54,684 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-25 19:36:54,684 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838853418] [2020-10-25 19:36:54,684 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-25 19:36:54,684 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:54,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-25 19:36:54,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:54,685 INFO L87 Difference]: Start difference. First operand 166 states and 207 transitions. Second operand 9 states. [2020-10-25 19:36:54,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:54,782 INFO L93 Difference]: Finished difference Result 361 states and 450 transitions. [2020-10-25 19:36:54,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-25 19:36:54,782 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-25 19:36:54,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:54,784 INFO L225 Difference]: With dead ends: 361 [2020-10-25 19:36:54,784 INFO L226 Difference]: Without dead ends: 240 [2020-10-25 19:36:54,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-25 19:36:54,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-25 19:36:54,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 173. [2020-10-25 19:36:54,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-25 19:36:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2020-10-25 19:36:54,796 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 54 [2020-10-25 19:36:54,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:54,797 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2020-10-25 19:36:54,797 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-25 19:36:54,797 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2020-10-25 19:36:54,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-25 19:36:54,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:54,804 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:55,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:55,018 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:55,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:55,020 INFO L82 PathProgramCache]: Analyzing trace with hash 520464227, now seen corresponding path program 1 times [2020-10-25 19:36:55,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:55,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802774954] [2020-10-25 19:36:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-25 19:36:55,078 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802774954] [2020-10-25 19:36:55,078 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-25 19:36:55,079 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-25 19:36:55,079 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081559466] [2020-10-25 19:36:55,079 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-25 19:36:55,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:55,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-25 19:36:55,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:36:55,080 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand 3 states. [2020-10-25 19:36:55,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:55,147 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2020-10-25 19:36:55,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-25 19:36:55,148 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-10-25 19:36:55,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:55,149 INFO L225 Difference]: With dead ends: 244 [2020-10-25 19:36:55,149 INFO L226 Difference]: Without dead ends: 74 [2020-10-25 19:36:55,150 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-25 19:36:55,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-25 19:36:55,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-25 19:36:55,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-25 19:36:55,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-25 19:36:55,156 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 56 [2020-10-25 19:36:55,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:55,157 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-25 19:36:55,157 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-25 19:36:55,157 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-25 19:36:55,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-25 19:36:55,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:55,163 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:55,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-25 19:36:55,163 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:55,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:55,164 INFO L82 PathProgramCache]: Analyzing trace with hash -408520283, now seen corresponding path program 1 times [2020-10-25 19:36:55,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:55,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179459712] [2020-10-25 19:36:55,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:55,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:55,320 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:55,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179459712] [2020-10-25 19:36:55,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1918652125] [2020-10-25 19:36:55,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:55,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:55,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-25 19:36:55,397 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:55,522 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:55,522 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:55,522 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-25 19:36:55,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298716199] [2020-10-25 19:36:55,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 19:36:55,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:55,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 19:36:55,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:36:55,526 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 10 states. [2020-10-25 19:36:55,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:55,836 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-10-25 19:36:55,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 19:36:55,837 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-25 19:36:55,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:55,838 INFO L225 Difference]: With dead ends: 126 [2020-10-25 19:36:55,838 INFO L226 Difference]: Without dead ends: 79 [2020-10-25 19:36:55,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 53 SyntacticMatches, 5 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:36:55,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-25 19:36:55,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-10-25 19:36:55,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-25 19:36:55,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-10-25 19:36:55,850 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 58 [2020-10-25 19:36:55,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:55,850 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-10-25 19:36:55,850 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 19:36:55,851 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-10-25 19:36:55,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-25 19:36:55,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:55,852 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:56,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:56,066 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:56,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:56,066 INFO L82 PathProgramCache]: Analyzing trace with hash -807057443, now seen corresponding path program 1 times [2020-10-25 19:36:56,067 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:56,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923956738] [2020-10-25 19:36:56,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:56,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:56,159 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:56,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923956738] [2020-10-25 19:36:56,160 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [776143747] [2020-10-25 19:36:56,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:56,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-25 19:36:56,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:56,266 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:56,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-25 19:36:56,267 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-25 19:36:56,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065741440] [2020-10-25 19:36:56,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-25 19:36:56,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:56,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-25 19:36:56,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:36:56,270 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 10 states. [2020-10-25 19:36:56,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:56,345 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-10-25 19:36:56,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-25 19:36:56,347 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-25 19:36:56,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:56,347 INFO L225 Difference]: With dead ends: 149 [2020-10-25 19:36:56,347 INFO L226 Difference]: Without dead ends: 103 [2020-10-25 19:36:56,348 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-25 19:36:56,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-25 19:36:56,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2020-10-25 19:36:56,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-25 19:36:56,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2020-10-25 19:36:56,355 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 59 [2020-10-25 19:36:56,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:56,356 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2020-10-25 19:36:56,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-25 19:36:56,356 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2020-10-25 19:36:56,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-25 19:36:56,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-25 19:36:56,357 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-25 19:36:56,572 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-25 19:36:56,573 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-25 19:36:56,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-25 19:36:56,574 INFO L82 PathProgramCache]: Analyzing trace with hash -2016429986, now seen corresponding path program 2 times [2020-10-25 19:36:56,574 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-25 19:36:56,574 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [316828782] [2020-10-25 19:36:56,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-25 19:36:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-25 19:36:56,723 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-25 19:36:56,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [316828782] [2020-10-25 19:36:56,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1747768211] [2020-10-25 19:36:56,723 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:56,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-25 19:36:56,933 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-25 19:36:56,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-25 19:36:56,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-25 19:36:57,146 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-25 19:36:57,147 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-25 19:36:57,147 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2020-10-25 19:36:57,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131815981] [2020-10-25 19:36:57,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-25 19:36:57,148 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-25 19:36:57,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-25 19:36:57,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-25 19:36:57,149 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 8 states. [2020-10-25 19:36:57,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-25 19:36:57,402 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-10-25 19:36:57,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-25 19:36:57,402 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-25 19:36:57,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-25 19:36:57,403 INFO L225 Difference]: With dead ends: 80 [2020-10-25 19:36:57,403 INFO L226 Difference]: Without dead ends: 0 [2020-10-25 19:36:57,403 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 55 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=430, Unknown=0, NotChecked=0, Total=506 [2020-10-25 19:36:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-25 19:36:57,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-25 19:36:57,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-25 19:36:57,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-25 19:36:57,404 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-10-25 19:36:57,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-25 19:36:57,405 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-25 19:36:57,405 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-25 19:36:57,405 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-25 19:36:57,405 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-25 19:36:57,605 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-25 19:36:57,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-25 19:36:58,116 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-25 19:36:58,117 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-25 19:36:58,117 INFO L274 CegarLoopResult]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-10-25 19:36:58,117 INFO L274 CegarLoopResult]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-10-25 19:36:58,117 INFO L274 CegarLoopResult]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-10-25 19:36:58,117 INFO L274 CegarLoopResult]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-10-25 19:36:58,117 INFO L274 CegarLoopResult]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-10-25 19:36:58,117 INFO L274 CegarLoopResult]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-10-25 19:36:58,118 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-10-25 19:36:58,118 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-10-25 19:36:58,118 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-10-25 19:36:58,118 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-10-25 19:36:58,119 INFO L270 CegarLoopResult]: At program point L71(lines 20 73) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-10-25 19:36:58,119 INFO L270 CegarLoopResult]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-25 19:36:58,119 INFO L270 CegarLoopResult]: At program point L71-2(lines 20 73) the Hoare annotation is: (or (= ULTIMATE.start_main_~zero~0 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) [2020-10-25 19:36:58,119 INFO L270 CegarLoopResult]: At program point L71-3(lines 20 73) the Hoare annotation is: (or (and (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-25 19:36:58,119 INFO L274 CegarLoopResult]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-10-25 19:36:58,120 INFO L274 CegarLoopResult]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-10-25 19:36:58,120 INFO L270 CegarLoopResult]: At program point L72(lines 16 74) the Hoare annotation is: (and (= ULTIMATE.start_base2flt_~e 0) (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0) (= ULTIMATE.start_base2flt_~m 0)) [2020-10-25 19:36:58,120 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-10-25 19:36:58,120 INFO L270 CegarLoopResult]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-25 19:36:58,120 INFO L270 CegarLoopResult]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-10-25 19:36:58,120 INFO L270 CegarLoopResult]: At program point L72-2(lines 16 74) the Hoare annotation is: (or (and (= |ULTIMATE.start_base2flt_#res| 0) (= ULTIMATE.start_base2flt_~__retres4~0 0)) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-25 19:36:58,120 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-10-25 19:36:58,120 INFO L270 CegarLoopResult]: At program point L72-3(lines 16 74) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0) (and (= |ULTIMATE.start_base2flt_#res| 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= ULTIMATE.start_base2flt_~__retres4~0 0))) [2020-10-25 19:36:58,120 INFO L270 CegarLoopResult]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-25 19:36:58,121 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-10-25 19:36:58,121 INFO L270 CegarLoopResult]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-25 19:36:58,121 INFO L274 CegarLoopResult]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-10-25 19:36:58,121 INFO L270 CegarLoopResult]: At program point L39-7(lines 29 44) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-25 19:36:58,121 INFO L274 CegarLoopResult]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-10-25 19:36:58,121 INFO L274 CegarLoopResult]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-10-25 19:36:58,121 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-10-25 19:36:58,121 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-25 19:36:58,122 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-25 19:36:58,123 INFO L270 CegarLoopResult]: At program point L208(lines 149 210) the Hoare annotation is: (or (and (= ULTIMATE.start_main_~sa~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2020-10-25 19:36:58,123 INFO L274 CegarLoopResult]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L270 CegarLoopResult]: At program point L209(lines 139 211) the Hoare annotation is: (or (and (= ULTIMATE.start_mulflt_~__retres10~1 0) (<= (mod ULTIMATE.start_main_~zero~0 4294967296) 0) (= |ULTIMATE.start_mulflt_#res| 0)) (and (= ULTIMATE.start_main_~sa~0 1) (= ULTIMATE.start_main_~tmp~2 1)) (<= (+ ULTIMATE.start_main_~sa~0 1) 0)) [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L274 CegarLoopResult]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-10-25 19:36:58,124 INFO L270 CegarLoopResult]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-10-25 19:36:58,124 INFO L270 CegarLoopResult]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-25 19:36:58,125 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-25 19:36:58,125 INFO L270 CegarLoopResult]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-25 19:36:58,125 INFO L270 CegarLoopResult]: At program point L65-3(lines 27 67) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-25 19:36:58,125 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-25 19:36:58,125 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-10-25 19:36:58,125 INFO L270 CegarLoopResult]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-10-25 19:36:58,125 INFO L270 CegarLoopResult]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-25 19:36:58,125 INFO L270 CegarLoopResult]: At program point L49-11(lines 49 64) the Hoare annotation is: (or (= ULTIMATE.start_main_~a~0 0) (= ULTIMATE.start_main_~zero~0 0)) [2020-10-25 19:36:58,125 INFO L274 CegarLoopResult]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-10-25 19:36:58,125 INFO L277 CegarLoopResult]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-10-25 19:36:58,125 INFO L274 CegarLoopResult]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,126 INFO L274 CegarLoopResult]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,126 INFO L274 CegarLoopResult]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,126 INFO L274 CegarLoopResult]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,126 INFO L274 CegarLoopResult]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L274 CegarLoopResult]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L274 CegarLoopResult]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L274 CegarLoopResult]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L274 CegarLoopResult]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L274 CegarLoopResult]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L274 CegarLoopResult]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L274 CegarLoopResult]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-10-25 19:36:58,127 INFO L277 CegarLoopResult]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-10-25 19:36:58,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.10 07:36:58 BoogieIcfgContainer [2020-10-25 19:36:58,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-25 19:36:58,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-25 19:36:58,177 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-25 19:36:58,177 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-25 19:36:58,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.10 07:36:44" (3/4) ... [2020-10-25 19:36:58,186 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-25 19:36:58,215 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-25 19:36:58,216 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-25 19:36:58,216 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:36:58,217 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-25 19:36:58,255 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 [2020-10-25 19:36:58,257 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0 && __retres4 == 0) || zero == 0 [2020-10-25 19:36:58,259 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (a == 0 || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-10-25 19:36:58,261 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sa == 1 && tmp == 1)) || sa + 1 <= 0 [2020-10-25 19:36:58,325 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-25 19:36:58,325 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-25 19:36:58,327 INFO L168 Benchmark]: Toolchain (without parser) took 15584.19 ms. Allocated memory was 48.2 MB in the beginning and 104.9 MB in the end (delta: 56.6 MB). Free memory was 25.6 MB in the beginning and 76.0 MB in the end (delta: -50.4 MB). Peak memory consumption was 8.0 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:58,328 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:36:58,328 INFO L168 Benchmark]: CACSL2BoogieTranslator took 415.48 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 26.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:58,328 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.85 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 24.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:58,329 INFO L168 Benchmark]: Boogie Preprocessor took 43.01 ms. Allocated memory is still 48.2 MB. Free memory was 24.0 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-10-25 19:36:58,329 INFO L168 Benchmark]: RCFGBuilder took 1086.63 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.1 MB in the beginning and 30.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:58,330 INFO L168 Benchmark]: TraceAbstraction took 13818.47 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 29.7 MB in the beginning and 82.3 MB in the end (delta: -52.6 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:58,330 INFO L168 Benchmark]: Witness Printer took 148.14 ms. Allocated memory is still 104.9 MB. Free memory was 82.3 MB in the beginning and 76.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-10-25 19:36:58,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 48.2 MB. Free memory was 35.5 MB in the beginning and 35.4 MB in the end (delta: 50.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 415.48 ms. Allocated memory is still 48.2 MB. Free memory was 25.0 MB in the beginning and 26.1 MB in the end (delta: -1.1 MB). Peak memory consumption was 5.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 58.85 ms. Allocated memory is still 48.2 MB. Free memory was 26.1 MB in the beginning and 24.0 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 43.01 ms. Allocated memory is still 48.2 MB. Free memory was 24.0 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 1086.63 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 22.1 MB in the beginning and 30.2 MB in the end (delta: -8.0 MB). Peak memory consumption was 8.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 13818.47 ms. Allocated memory was 58.7 MB in the beginning and 104.9 MB in the end (delta: 46.1 MB). Free memory was 29.7 MB in the beginning and 82.3 MB in the end (delta: -52.6 MB). Peak memory consumption was 50.4 MB. Max. memory is 16.1 GB. * Witness Printer took 148.14 ms. Allocated memory is still 104.9 MB. Free memory was 82.3 MB in the beginning and 76.0 MB in the end (delta: 6.3 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 || __retres4 == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (a == 0 || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) - InvariantResult [Line: 149]: Loop Invariant Derived loop invariant: ((sa == 1 && tmp == 1) || (__retres10 == 0 && zero % 4294967296 <= 0)) || sa + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: (\result == 0 && __retres4 == 0) || zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: a == 0 || zero == 0 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sa == 1 && tmp == 1)) || sa + 1 <= 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: (e == 0 && __retres4 == 0) && m == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 16]: Loop Invariant Derived loop invariant: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: a == 0 || zero == 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 212]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: a == 0 || zero == 0 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 49]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 248]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - InvariantResult [Line: 20]: Loop Invariant Derived loop invariant: ((zero % 4294967296 <= 0 && __retres4 == 0) || a == 0) || zero == 0 - InvariantResult [Line: 29]: Loop Invariant Derived loop invariant: zero == 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 73 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.1s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2070 SDtfs, 1284 SDslu, 5197 SDs, 0 SdLazy, 1986 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 891 GetRequests, 724 SyntacticMatches, 17 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 2.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=173occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 23 MinimizatonAttempts, 529 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 24 LocationsWithAnnotation, 24 PreInvPairs, 68 NumberOfFragments, 171 HoareAnnotationTreeSize, 24 FomulaSimplifications, 20959 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 24 FomulaSimplificationsInter, 163 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.0s SatisfiabilityAnalysisTime, 3.0s InterpolantComputationTime, 1714 NumberOfCodeBlocks, 1654 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 1675 ConstructedInterpolants, 0 QuantifiedInterpolants, 169770 SizeOfPredicates, 46 NumberOfNonLiveVariables, 2685 ConjunctsInSsa, 156 ConjunctsInUnsatCore, 39 InterpolantComputations, 12 PerfectInterpolantSequences, 211/866 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 correct! Received shutdown request...