./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/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 0.1.25-9a8b2e8 [2020-10-19 22:22:23,357 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:23,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:23,411 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:23,411 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:23,412 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:23,414 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:23,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:23,418 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:23,419 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:23,420 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:23,421 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:23,422 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:23,423 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:23,424 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:23,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:23,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:23,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:23,437 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:23,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:23,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:23,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:23,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:23,453 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:23,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:23,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:23,459 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:23,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:23,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:23,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:23,464 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:23,465 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:23,466 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:23,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:23,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:23,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:23,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:23,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:23,472 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:23,473 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:23,474 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:23,475 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:22:23,525 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:23,525 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:23,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:23,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:23,529 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:23,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:23,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:23,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:22:23,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:23,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:23,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:23,532 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:23,532 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:23,533 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:23,533 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:23,533 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:23,533 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:23,534 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:23,534 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:23,534 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:23,534 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:23,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:23,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:23,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:23,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:23,536 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:22:23,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:22:23,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:23,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:23,537 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 09f813c788ce76f2fed6ff9e53c54c81ca842bfc [2020-10-19 22:22:23,754 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:23,767 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:23,771 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:23,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:23,784 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:23,785 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-19 22:22:23,862 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e524e54d/c0709be367b4428cbff3e471c768ed89/FLAGe433cb829 [2020-10-19 22:22:24,494 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:24,495 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector/soft_float_2a.c.cil.c [2020-10-19 22:22:24,510 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e524e54d/c0709be367b4428cbff3e471c768ed89/FLAGe433cb829 [2020-10-19 22:22:24,830 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5e524e54d/c0709be367b4428cbff3e471c768ed89 [2020-10-19 22:22:24,834 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:24,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:24,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:24,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:24,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:24,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:24" (1/1) ... [2020-10-19 22:22:24,852 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63a67e0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:24, skipping insertion in model container [2020-10-19 22:22:24,853 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:24" (1/1) ... [2020-10-19 22:22:24,859 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:24,884 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:25,142 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:25,153 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:25,202 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:25,221 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:25,222 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25 WrapperNode [2020-10-19 22:22:25,222 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:25,223 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:25,223 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:25,223 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:25,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,244 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:25,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:25,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:25,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:25,301 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,301 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,305 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,305 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... [2020-10-19 22:22:25,329 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:25,330 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:25,330 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:25,331 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:25,332 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:25,399 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:25,400 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:25,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:25,963 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:25,963 INFO L298 CfgBuilder]: Removed 26 assume(true) statements. [2020-10-19 22:22:25,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:25 BoogieIcfgContainer [2020-10-19 22:22:25,969 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:25,971 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:25,972 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:25,976 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:25,977 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:24" (1/3) ... [2020-10-19 22:22:25,978 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164937d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:25, skipping insertion in model container [2020-10-19 22:22:25,979 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:25" (2/3) ... [2020-10-19 22:22:25,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@164937d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:25, skipping insertion in model container [2020-10-19 22:22:25,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:25" (3/3) ... [2020-10-19 22:22:25,982 INFO L111 eAbstractionObserver]: Analyzing ICFG soft_float_2a.c.cil.c [2020-10-19 22:22:25,995 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:26,005 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:22:26,022 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:22:26,044 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:26,045 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:26,045 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:26,045 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:26,045 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:26,046 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:26,046 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:26,046 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:26,064 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states. [2020-10-19 22:22:26,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-19 22:22:26,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:26,073 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:26,073 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:26,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:26,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1243249868, now seen corresponding path program 1 times [2020-10-19 22:22:26,090 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:26,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821931403] [2020-10-19 22:22:26,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:26,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:26,349 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:26,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821931403] [2020-10-19 22:22:26,351 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:26,351 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:26,352 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68135468] [2020-10-19 22:22:26,358 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:26,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:26,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:26,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:26,377 INFO L87 Difference]: Start difference. First operand 73 states. Second operand 3 states. [2020-10-19 22:22:26,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:26,429 INFO L93 Difference]: Finished difference Result 151 states and 252 transitions. [2020-10-19 22:22:26,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:26,432 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2020-10-19 22:22:26,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:26,445 INFO L225 Difference]: With dead ends: 151 [2020-10-19 22:22:26,445 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 22:22:26,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:26,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 22:22:26,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 22:22:26,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 22:22:26,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 101 transitions. [2020-10-19 22:22:26,497 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 101 transitions. Word has length 25 [2020-10-19 22:22:26,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:26,498 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 101 transitions. [2020-10-19 22:22:26,498 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 101 transitions. [2020-10-19 22:22:26,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:22:26,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:26,500 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:26,501 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:22:26,501 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:26,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:26,502 INFO L82 PathProgramCache]: Analyzing trace with hash 464393210, now seen corresponding path program 1 times [2020-10-19 22:22:26,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:26,503 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756731998] [2020-10-19 22:22:26,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:26,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:26,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756731998] [2020-10-19 22:22:26,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:26,617 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:22:26,617 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625715253] [2020-10-19 22:22:26,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:26,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:26,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:26,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:26,622 INFO L87 Difference]: Start difference. First operand 68 states and 101 transitions. Second operand 4 states. [2020-10-19 22:22:26,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:26,659 INFO L93 Difference]: Finished difference Result 88 states and 129 transitions. [2020-10-19 22:22:26,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:22:26,660 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-19 22:22:26,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:26,662 INFO L225 Difference]: With dead ends: 88 [2020-10-19 22:22:26,662 INFO L226 Difference]: Without dead ends: 68 [2020-10-19 22:22:26,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:26,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-19 22:22:26,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-19 22:22:26,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-19 22:22:26,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 100 transitions. [2020-10-19 22:22:26,674 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 100 transitions. Word has length 27 [2020-10-19 22:22:26,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:26,675 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 100 transitions. [2020-10-19 22:22:26,675 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:26,675 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 100 transitions. [2020-10-19 22:22:26,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-19 22:22:26,677 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:26,677 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:26,678 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-19 22:22:26,678 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:26,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:26,679 INFO L82 PathProgramCache]: Analyzing trace with hash 722558648, now seen corresponding path program 1 times [2020-10-19 22:22:26,679 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:26,679 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1368196679] [2020-10-19 22:22:26,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:26,740 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:26,741 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1368196679] [2020-10-19 22:22:26,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:26,742 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:26,742 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978394941] [2020-10-19 22:22:26,742 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:26,742 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:26,743 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:26,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:26,744 INFO L87 Difference]: Start difference. First operand 68 states and 100 transitions. Second operand 3 states. [2020-10-19 22:22:26,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:26,873 INFO L93 Difference]: Finished difference Result 119 states and 172 transitions. [2020-10-19 22:22:26,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:26,874 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-10-19 22:22:26,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:26,876 INFO L225 Difference]: With dead ends: 119 [2020-10-19 22:22:26,876 INFO L226 Difference]: Without dead ends: 69 [2020-10-19 22:22:26,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:26,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-19 22:22:26,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 65. [2020-10-19 22:22:26,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-19 22:22:26,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 93 transitions. [2020-10-19 22:22:26,886 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 93 transitions. Word has length 27 [2020-10-19 22:22:26,886 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:26,887 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 93 transitions. [2020-10-19 22:22:26,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:26,887 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 93 transitions. [2020-10-19 22:22:26,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-19 22:22:26,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:26,889 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-19 22:22:26,889 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-19 22:22:26,889 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:26,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:26,890 INFO L82 PathProgramCache]: Analyzing trace with hash -1336799219, now seen corresponding path program 1 times [2020-10-19 22:22:26,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:26,891 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119281223] [2020-10-19 22:22:26,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:26,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:26,941 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119281223] [2020-10-19 22:22:26,941 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:26,941 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:26,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473205410] [2020-10-19 22:22:26,942 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:26,942 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:26,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:26,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:26,943 INFO L87 Difference]: Start difference. First operand 65 states and 93 transitions. Second operand 3 states. [2020-10-19 22:22:26,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:26,995 INFO L93 Difference]: Finished difference Result 129 states and 183 transitions. [2020-10-19 22:22:26,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:26,996 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-10-19 22:22:26,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:26,997 INFO L225 Difference]: With dead ends: 129 [2020-10-19 22:22:26,997 INFO L226 Difference]: Without dead ends: 75 [2020-10-19 22:22:26,998 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:26,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-10-19 22:22:27,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 72. [2020-10-19 22:22:27,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 22:22:27,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 101 transitions. [2020-10-19 22:22:27,008 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 101 transitions. Word has length 30 [2020-10-19 22:22:27,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:27,009 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 101 transitions. [2020-10-19 22:22:27,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:27,009 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 101 transitions. [2020-10-19 22:22:27,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-19 22:22:27,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:27,011 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] [2020-10-19 22:22:27,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-19 22:22:27,012 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:27,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:27,012 INFO L82 PathProgramCache]: Analyzing trace with hash 1305570860, now seen corresponding path program 1 times [2020-10-19 22:22:27,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:27,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510569838] [2020-10-19 22:22:27,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:27,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:27,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:27,124 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510569838] [2020-10-19 22:22:27,124 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:27,124 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-19 22:22:27,124 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268368952] [2020-10-19 22:22:27,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-19 22:22:27,125 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:27,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-19 22:22:27,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-10-19 22:22:27,126 INFO L87 Difference]: Start difference. First operand 72 states and 101 transitions. Second operand 4 states. [2020-10-19 22:22:27,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:27,280 INFO L93 Difference]: Finished difference Result 136 states and 189 transitions. [2020-10-19 22:22:27,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-19 22:22:27,281 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-19 22:22:27,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:27,282 INFO L225 Difference]: With dead ends: 136 [2020-10-19 22:22:27,282 INFO L226 Difference]: Without dead ends: 73 [2020-10-19 22:22:27,284 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 [2020-10-19 22:22:27,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-19 22:22:27,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-10-19 22:22:27,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-19 22:22:27,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 92 transitions. [2020-10-19 22:22:27,291 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 92 transitions. Word has length 32 [2020-10-19 22:22:27,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:27,292 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 92 transitions. [2020-10-19 22:22:27,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-19 22:22:27,292 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 92 transitions. [2020-10-19 22:22:27,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-19 22:22:27,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:27,294 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] [2020-10-19 22:22:27,294 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-19 22:22:27,294 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:27,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:27,295 INFO L82 PathProgramCache]: Analyzing trace with hash 734686790, now seen corresponding path program 1 times [2020-10-19 22:22:27,295 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:27,306 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545515846] [2020-10-19 22:22:27,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:27,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:27,351 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:27,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545515846] [2020-10-19 22:22:27,352 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1416372629] [2020-10-19 22:22:27,352 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 [2020-10-19 22:22:27,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:27,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-10-19 22:22:27,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:27,512 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:27,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:27,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2020-10-19 22:22:27,513 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637437135] [2020-10-19 22:22:27,514 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:27,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:27,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:27,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:27,527 INFO L87 Difference]: Start difference. First operand 67 states and 92 transitions. Second operand 5 states. [2020-10-19 22:22:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:27,582 INFO L93 Difference]: Finished difference Result 160 states and 218 transitions. [2020-10-19 22:22:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:27,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-19 22:22:27,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:27,584 INFO L225 Difference]: With dead ends: 160 [2020-10-19 22:22:27,584 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 22:22:27,585 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 [2020-10-19 22:22:27,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 22:22:27,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 72. [2020-10-19 22:22:27,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-19 22:22:27,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 98 transitions. [2020-10-19 22:22:27,593 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 98 transitions. Word has length 33 [2020-10-19 22:22:27,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:27,594 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 98 transitions. [2020-10-19 22:22:27,594 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:27,594 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 98 transitions. [2020-10-19 22:22:27,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-19 22:22:27,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:27,596 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] [2020-10-19 22:22:27,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2020-10-19 22:22:27,813 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:27,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:27,814 INFO L82 PathProgramCache]: Analyzing trace with hash -861199835, now seen corresponding path program 1 times [2020-10-19 22:22:27,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:27,815 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1364981754] [2020-10-19 22:22:27,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:27,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:27,898 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:27,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1364981754] [2020-10-19 22:22:27,899 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1576605751] [2020-10-19 22:22:27,899 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 [2020-10-19 22:22:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:27,994 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:27,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:28,095 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:28,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:28,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 22:22:28,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523868478] [2020-10-19 22:22:28,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:28,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:28,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:28,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:28,098 INFO L87 Difference]: Start difference. First operand 72 states and 98 transitions. Second operand 6 states. [2020-10-19 22:22:28,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:28,219 INFO L93 Difference]: Finished difference Result 126 states and 174 transitions. [2020-10-19 22:22:28,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:28,221 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-10-19 22:22:28,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:28,222 INFO L225 Difference]: With dead ends: 126 [2020-10-19 22:22:28,222 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 22:22:28,222 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 22:22:28,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-10-19 22:22:28,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-19 22:22:28,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 99 transitions. [2020-10-19 22:22:28,238 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 99 transitions. Word has length 35 [2020-10-19 22:22:28,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:28,238 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 99 transitions. [2020-10-19 22:22:28,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:28,238 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 99 transitions. [2020-10-19 22:22:28,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-19 22:22:28,239 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:28,239 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] [2020-10-19 22:22:28,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:28,440 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:28,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:28,441 INFO L82 PathProgramCache]: Analyzing trace with hash -2010695315, now seen corresponding path program 2 times [2020-10-19 22:22:28,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:28,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397913389] [2020-10-19 22:22:28,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:28,490 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397913389] [2020-10-19 22:22:28,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249639672] [2020-10-19 22:22:28,491 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 [2020-10-19 22:22:28,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:28,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:28,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:28,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-19 22:22:28,641 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:28,641 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5] total 9 [2020-10-19 22:22:28,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82689941] [2020-10-19 22:22:28,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:28,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:28,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:28,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:28,643 INFO L87 Difference]: Start difference. First operand 73 states and 99 transitions. Second operand 6 states. [2020-10-19 22:22:28,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:28,925 INFO L93 Difference]: Finished difference Result 265 states and 356 transitions. [2020-10-19 22:22:28,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-19 22:22:28,925 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-10-19 22:22:28,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:28,927 INFO L225 Difference]: With dead ends: 265 [2020-10-19 22:22:28,927 INFO L226 Difference]: Without dead ends: 261 [2020-10-19 22:22:28,928 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2020-10-19 22:22:28,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2020-10-19 22:22:28,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 127. [2020-10-19 22:22:28,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-10-19 22:22:28,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 174 transitions. [2020-10-19 22:22:28,940 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 174 transitions. Word has length 36 [2020-10-19 22:22:28,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:28,940 INFO L481 AbstractCegarLoop]: Abstraction has 127 states and 174 transitions. [2020-10-19 22:22:28,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:28,940 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 174 transitions. [2020-10-19 22:22:28,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-19 22:22:28,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:28,942 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] [2020-10-19 22:22:29,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:29,156 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:29,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:29,156 INFO L82 PathProgramCache]: Analyzing trace with hash 508659463, now seen corresponding path program 1 times [2020-10-19 22:22:29,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:29,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1451263389] [2020-10-19 22:22:29,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:29,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:29,204 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1451263389] [2020-10-19 22:22:29,205 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [986323894] [2020-10-19 22:22:29,205 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 [2020-10-19 22:22:29,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:29,292 INFO L263 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-19 22:22:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:29,346 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:29,347 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:29,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-10-19 22:22:29,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591976567] [2020-10-19 22:22:29,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:29,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:29,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:29,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-10-19 22:22:29,348 INFO L87 Difference]: Start difference. First operand 127 states and 174 transitions. Second operand 6 states. [2020-10-19 22:22:29,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:29,434 INFO L93 Difference]: Finished difference Result 288 states and 395 transitions. [2020-10-19 22:22:29,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:29,434 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-10-19 22:22:29,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:29,436 INFO L225 Difference]: With dead ends: 288 [2020-10-19 22:22:29,436 INFO L226 Difference]: Without dead ends: 188 [2020-10-19 22:22:29,439 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 [2020-10-19 22:22:29,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-19 22:22:29,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 134. [2020-10-19 22:22:29,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-19 22:22:29,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 182 transitions. [2020-10-19 22:22:29,456 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 182 transitions. Word has length 38 [2020-10-19 22:22:29,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:29,457 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 182 transitions. [2020-10-19 22:22:29,459 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:29,459 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 182 transitions. [2020-10-19 22:22:29,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-19 22:22:29,463 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:29,464 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] [2020-10-19 22:22:29,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:29,678 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:29,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:29,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1319305574, now seen corresponding path program 1 times [2020-10-19 22:22:29,678 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:29,678 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177893703] [2020-10-19 22:22:29,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:29,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:29,779 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:29,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177893703] [2020-10-19 22:22:29,780 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1698681981] [2020-10-19 22:22:29,780 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 [2020-10-19 22:22:29,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:29,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:22:29,863 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:29,992 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:29,995 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:29,995 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-19 22:22:29,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403574526] [2020-10-19 22:22:29,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:29,997 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:29,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:29,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:29,998 INFO L87 Difference]: Start difference. First operand 134 states and 182 transitions. Second operand 7 states. [2020-10-19 22:22:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:30,243 INFO L93 Difference]: Finished difference Result 234 states and 325 transitions. [2020-10-19 22:22:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:30,244 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-10-19 22:22:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:30,245 INFO L225 Difference]: With dead ends: 234 [2020-10-19 22:22:30,245 INFO L226 Difference]: Without dead ends: 146 [2020-10-19 22:22:30,246 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 [2020-10-19 22:22:30,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2020-10-19 22:22:30,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 136. [2020-10-19 22:22:30,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-19 22:22:30,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 184 transitions. [2020-10-19 22:22:30,258 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 184 transitions. Word has length 40 [2020-10-19 22:22:30,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:30,259 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 184 transitions. [2020-10-19 22:22:30,259 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:30,259 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 184 transitions. [2020-10-19 22:22:30,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 22:22:30,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:30,260 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] [2020-10-19 22:22:30,473 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2020-10-19 22:22:30,474 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:30,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:30,475 INFO L82 PathProgramCache]: Analyzing trace with hash -976708544, now seen corresponding path program 2 times [2020-10-19 22:22:30,475 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:30,476 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223115623] [2020-10-19 22:22:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:30,526 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:30,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223115623] [2020-10-19 22:22:30,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [686103652] [2020-10-19 22:22:30,526 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 [2020-10-19 22:22:30,593 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:30,593 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:30,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 147 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:22:30,598 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:30,643 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:22:30,643 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:30,644 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2020-10-19 22:22:30,644 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1893967870] [2020-10-19 22:22:30,644 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:30,644 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:30,645 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:30,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:30,645 INFO L87 Difference]: Start difference. First operand 136 states and 184 transitions. Second operand 5 states. [2020-10-19 22:22:30,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:30,697 INFO L93 Difference]: Finished difference Result 155 states and 203 transitions. [2020-10-19 22:22:30,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:30,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-19 22:22:30,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:30,699 INFO L225 Difference]: With dead ends: 155 [2020-10-19 22:22:30,699 INFO L226 Difference]: Without dead ends: 150 [2020-10-19 22:22:30,700 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 [2020-10-19 22:22:30,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-19 22:22:30,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 145. [2020-10-19 22:22:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-19 22:22:30,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 194 transitions. [2020-10-19 22:22:30,708 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 194 transitions. Word has length 41 [2020-10-19 22:22:30,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:30,708 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 194 transitions. [2020-10-19 22:22:30,708 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:30,708 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 194 transitions. [2020-10-19 22:22:30,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-19 22:22:30,709 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:30,709 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] [2020-10-19 22:22:30,909 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:30,910 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:30,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:30,911 INFO L82 PathProgramCache]: Analyzing trace with hash -974861502, now seen corresponding path program 1 times [2020-10-19 22:22:30,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:30,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887290528] [2020-10-19 22:22:30,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:30,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:30,953 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-19 22:22:30,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887290528] [2020-10-19 22:22:30,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:30,954 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-19 22:22:30,954 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161901267] [2020-10-19 22:22:30,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-19 22:22:30,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:30,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-19 22:22:30,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-19 22:22:30,955 INFO L87 Difference]: Start difference. First operand 145 states and 194 transitions. Second operand 5 states. [2020-10-19 22:22:30,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:30,987 INFO L93 Difference]: Finished difference Result 150 states and 198 transitions. [2020-10-19 22:22:30,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-19 22:22:30,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-10-19 22:22:30,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:30,989 INFO L225 Difference]: With dead ends: 150 [2020-10-19 22:22:30,989 INFO L226 Difference]: Without dead ends: 140 [2020-10-19 22:22:30,990 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 [2020-10-19 22:22:30,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-19 22:22:31,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-10-19 22:22:31,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-19 22:22:31,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-10-19 22:22:31,009 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 41 [2020-10-19 22:22:31,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:31,010 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-10-19 22:22:31,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-19 22:22:31,010 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-10-19 22:22:31,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-19 22:22:31,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:31,011 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] [2020-10-19 22:22:31,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-19 22:22:31,012 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:31,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:31,012 INFO L82 PathProgramCache]: Analyzing trace with hash -543462300, now seen corresponding path program 1 times [2020-10-19 22:22:31,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:31,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560055319] [2020-10-19 22:22:31,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:31,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:31,060 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:31,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560055319] [2020-10-19 22:22:31,061 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206980797] [2020-10-19 22:22:31,061 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 [2020-10-19 22:22:31,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:31,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 172 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-19 22:22:31,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:31,144 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:31,144 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:31,144 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-10-19 22:22:31,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641126949] [2020-10-19 22:22:31,145 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:31,145 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:31,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:31,146 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-10-19 22:22:31,146 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 7 states. [2020-10-19 22:22:31,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:31,236 INFO L93 Difference]: Finished difference Result 315 states and 414 transitions. [2020-10-19 22:22:31,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-19 22:22:31,237 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 42 [2020-10-19 22:22:31,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:31,239 INFO L225 Difference]: With dead ends: 315 [2020-10-19 22:22:31,239 INFO L226 Difference]: Without dead ends: 208 [2020-10-19 22:22:31,240 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 [2020-10-19 22:22:31,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 208 states. [2020-10-19 22:22:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 208 to 147. [2020-10-19 22:22:31,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-19 22:22:31,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2020-10-19 22:22:31,248 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 42 [2020-10-19 22:22:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:31,249 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2020-10-19 22:22:31,249 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:31,249 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2020-10-19 22:22:31,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-19 22:22:31,250 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:31,250 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] [2020-10-19 22:22:31,463 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:31,463 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:31,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:31,465 INFO L82 PathProgramCache]: Analyzing trace with hash -1931714523, now seen corresponding path program 1 times [2020-10-19 22:22:31,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:31,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [549654744] [2020-10-19 22:22:31,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:31,553 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:31,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [549654744] [2020-10-19 22:22:31,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219670957] [2020-10-19 22:22:31,554 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 [2020-10-19 22:22:31,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:31,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 13 conjunts are in the unsatisfiable core [2020-10-19 22:22:31,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:31,706 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:31,706 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-19 22:22:31,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632076946] [2020-10-19 22:22:31,707 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:31,707 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:31,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:31,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:31,708 INFO L87 Difference]: Start difference. First operand 147 states and 193 transitions. Second operand 8 states. [2020-10-19 22:22:31,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:31,938 INFO L93 Difference]: Finished difference Result 251 states and 337 transitions. [2020-10-19 22:22:31,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:22:31,939 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 44 [2020-10-19 22:22:31,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:31,940 INFO L225 Difference]: With dead ends: 251 [2020-10-19 22:22:31,941 INFO L226 Difference]: Without dead ends: 159 [2020-10-19 22:22:31,942 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:31,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2020-10-19 22:22:31,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 149. [2020-10-19 22:22:31,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-19 22:22:31,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 195 transitions. [2020-10-19 22:22:31,955 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 195 transitions. Word has length 44 [2020-10-19 22:22:31,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:31,956 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 195 transitions. [2020-10-19 22:22:31,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:31,956 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 195 transitions. [2020-10-19 22:22:31,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-19 22:22:31,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:31,957 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] [2020-10-19 22:22:32,171 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2020-10-19 22:22:32,172 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:32,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:32,172 INFO L82 PathProgramCache]: Analyzing trace with hash 514014493, now seen corresponding path program 2 times [2020-10-19 22:22:32,172 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:32,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059679714] [2020-10-19 22:22:32,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:32,221 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:32,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059679714] [2020-10-19 22:22:32,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1001586602] [2020-10-19 22:22:32,222 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 [2020-10-19 22:22:32,275 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:32,276 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:32,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 11 conjunts are in the unsatisfiable core [2020-10-19 22:22:32,278 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:32,316 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-19 22:22:32,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:32,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2020-10-19 22:22:32,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030495535] [2020-10-19 22:22:32,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-19 22:22:32,320 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:32,320 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-19 22:22:32,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-19 22:22:32,321 INFO L87 Difference]: Start difference. First operand 149 states and 195 transitions. Second operand 6 states. [2020-10-19 22:22:32,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:32,445 INFO L93 Difference]: Finished difference Result 211 states and 269 transitions. [2020-10-19 22:22:32,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-19 22:22:32,446 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 45 [2020-10-19 22:22:32,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:32,447 INFO L225 Difference]: With dead ends: 211 [2020-10-19 22:22:32,448 INFO L226 Difference]: Without dead ends: 171 [2020-10-19 22:22:32,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2020-10-19 22:22:32,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-19 22:22:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 157. [2020-10-19 22:22:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-19 22:22:32,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 201 transitions. [2020-10-19 22:22:32,463 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 201 transitions. Word has length 45 [2020-10-19 22:22:32,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:32,466 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 201 transitions. [2020-10-19 22:22:32,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-19 22:22:32,467 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 201 transitions. [2020-10-19 22:22:32,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-19 22:22:32,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:32,468 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] [2020-10-19 22:22:32,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2020-10-19 22:22:32,682 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:32,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:32,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1892120530, now seen corresponding path program 1 times [2020-10-19 22:22:32,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:32,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370461299] [2020-10-19 22:22:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:32,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:32,733 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:32,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370461299] [2020-10-19 22:22:32,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [345630979] [2020-10-19 22:22:32,734 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 [2020-10-19 22:22:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:32,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-19 22:22:32,806 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:32,828 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:32,829 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:32,829 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 8 [2020-10-19 22:22:32,829 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879241206] [2020-10-19 22:22:32,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:32,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:32,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:32,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-10-19 22:22:32,830 INFO L87 Difference]: Start difference. First operand 157 states and 201 transitions. Second operand 8 states. [2020-10-19 22:22:32,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:32,928 INFO L93 Difference]: Finished difference Result 346 states and 442 transitions. [2020-10-19 22:22:32,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-19 22:22:32,929 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2020-10-19 22:22:32,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:32,930 INFO L225 Difference]: With dead ends: 346 [2020-10-19 22:22:32,931 INFO L226 Difference]: Without dead ends: 228 [2020-10-19 22:22:32,931 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 [2020-10-19 22:22:32,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-19 22:22:32,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 164. [2020-10-19 22:22:32,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-19 22:22:32,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 209 transitions. [2020-10-19 22:22:32,941 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 209 transitions. Word has length 49 [2020-10-19 22:22:32,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:32,941 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 209 transitions. [2020-10-19 22:22:32,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:32,941 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 209 transitions. [2020-10-19 22:22:32,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-19 22:22:32,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:32,942 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] [2020-10-19 22:22:33,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2020-10-19 22:22:33,157 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:33,157 INFO L82 PathProgramCache]: Analyzing trace with hash -260802349, now seen corresponding path program 1 times [2020-10-19 22:22:33,157 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:33,157 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882810839] [2020-10-19 22:22:33,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:33,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:33,253 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:33,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882810839] [2020-10-19 22:22:33,254 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411099606] [2020-10-19 22:22:33,254 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 [2020-10-19 22:22:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:33,324 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 15 conjunts are in the unsatisfiable core [2020-10-19 22:22:33,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:33,413 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:33,413 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:33,413 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-19 22:22:33,413 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376745839] [2020-10-19 22:22:33,414 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:22:33,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:33,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:22:33,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:33,415 INFO L87 Difference]: Start difference. First operand 164 states and 209 transitions. Second operand 9 states. [2020-10-19 22:22:33,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:33,658 INFO L93 Difference]: Finished difference Result 276 states and 359 transitions. [2020-10-19 22:22:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:33,659 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-10-19 22:22:33,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:33,660 INFO L225 Difference]: With dead ends: 276 [2020-10-19 22:22:33,661 INFO L226 Difference]: Without dead ends: 176 [2020-10-19 22:22:33,663 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 [2020-10-19 22:22:33,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-19 22:22:33,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 166. [2020-10-19 22:22:33,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-19 22:22:33,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 211 transitions. [2020-10-19 22:22:33,672 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 211 transitions. Word has length 51 [2020-10-19 22:22:33,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:33,673 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 211 transitions. [2020-10-19 22:22:33,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:22:33,673 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 211 transitions. [2020-10-19 22:22:33,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-19 22:22:33,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:33,674 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] [2020-10-19 22:22:33,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2020-10-19 22:22:33,889 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:33,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:33,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1844505351, now seen corresponding path program 2 times [2020-10-19 22:22:33,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:33,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579519810] [2020-10-19 22:22:33,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:33,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:33,946 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [579519810] [2020-10-19 22:22:33,947 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895393763] [2020-10-19 22:22:33,947 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 [2020-10-19 22:22:34,024 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:34,024 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:34,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 12 conjunts are in the unsatisfiable core [2020-10-19 22:22:34,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:34,087 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-19 22:22:34,087 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:34,087 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2020-10-19 22:22:34,088 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369510952] [2020-10-19 22:22:34,088 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-19 22:22:34,088 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:34,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-19 22:22:34,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-10-19 22:22:34,089 INFO L87 Difference]: Start difference. First operand 166 states and 211 transitions. Second operand 7 states. [2020-10-19 22:22:34,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:34,284 INFO L93 Difference]: Finished difference Result 222 states and 273 transitions. [2020-10-19 22:22:34,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:22:34,284 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-19 22:22:34,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:34,285 INFO L225 Difference]: With dead ends: 222 [2020-10-19 22:22:34,286 INFO L226 Difference]: Without dead ends: 186 [2020-10-19 22:22:34,286 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 [2020-10-19 22:22:34,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2020-10-19 22:22:34,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 166. [2020-10-19 22:22:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-10-19 22:22:34,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 207 transitions. [2020-10-19 22:22:34,300 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 207 transitions. Word has length 52 [2020-10-19 22:22:34,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:34,300 INFO L481 AbstractCegarLoop]: Abstraction has 166 states and 207 transitions. [2020-10-19 22:22:34,300 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-19 22:22:34,300 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 207 transitions. [2020-10-19 22:22:34,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-19 22:22:34,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:34,301 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] [2020-10-19 22:22:34,514 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2020-10-19 22:22:34,514 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:34,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:34,515 INFO L82 PathProgramCache]: Analyzing trace with hash 365328708, now seen corresponding path program 1 times [2020-10-19 22:22:34,515 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:34,516 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473473613] [2020-10-19 22:22:34,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:34,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:34,571 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:34,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473473613] [2020-10-19 22:22:34,572 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [663633644] [2020-10-19 22:22:34,572 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 [2020-10-19 22:22:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:34,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 8 conjunts are in the unsatisfiable core [2020-10-19 22:22:34,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:34,655 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:34,656 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:34,656 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 9 [2020-10-19 22:22:34,656 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1845498499] [2020-10-19 22:22:34,657 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-19 22:22:34,657 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:34,657 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-19 22:22:34,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-10-19 22:22:34,657 INFO L87 Difference]: Start difference. First operand 166 states and 207 transitions. Second operand 9 states. [2020-10-19 22:22:34,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:34,748 INFO L93 Difference]: Finished difference Result 361 states and 450 transitions. [2020-10-19 22:22:34,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-19 22:22:34,749 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-19 22:22:34,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:34,751 INFO L225 Difference]: With dead ends: 361 [2020-10-19 22:22:34,751 INFO L226 Difference]: Without dead ends: 240 [2020-10-19 22:22:34,751 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 [2020-10-19 22:22:34,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2020-10-19 22:22:34,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 173. [2020-10-19 22:22:34,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-19 22:22:34,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 215 transitions. [2020-10-19 22:22:34,761 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 215 transitions. Word has length 54 [2020-10-19 22:22:34,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:34,762 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 215 transitions. [2020-10-19 22:22:34,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-19 22:22:34,762 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 215 transitions. [2020-10-19 22:22:34,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-19 22:22:34,763 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:34,763 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] [2020-10-19 22:22:34,978 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:34,978 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:34,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:34,979 INFO L82 PathProgramCache]: Analyzing trace with hash 520464227, now seen corresponding path program 1 times [2020-10-19 22:22:34,979 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:34,979 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013024250] [2020-10-19 22:22:34,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:35,007 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-19 22:22:35,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013024250] [2020-10-19 22:22:35,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-19 22:22:35,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-19 22:22:35,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73549497] [2020-10-19 22:22:35,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-19 22:22:35,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:35,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-19 22:22:35,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-19 22:22:35,009 INFO L87 Difference]: Start difference. First operand 173 states and 215 transitions. Second operand 3 states. [2020-10-19 22:22:35,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:35,059 INFO L93 Difference]: Finished difference Result 244 states and 300 transitions. [2020-10-19 22:22:35,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-19 22:22:35,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 56 [2020-10-19 22:22:35,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:35,065 INFO L225 Difference]: With dead ends: 244 [2020-10-19 22:22:35,066 INFO L226 Difference]: Without dead ends: 74 [2020-10-19 22:22:35,066 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 [2020-10-19 22:22:35,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-19 22:22:35,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-19 22:22:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-19 22:22:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 88 transitions. [2020-10-19 22:22:35,072 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 88 transitions. Word has length 56 [2020-10-19 22:22:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:35,073 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 88 transitions. [2020-10-19 22:22:35,073 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-19 22:22:35,073 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 88 transitions. [2020-10-19 22:22:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-19 22:22:35,074 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:35,074 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] [2020-10-19 22:22:35,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-19 22:22:35,074 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:35,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:35,075 INFO L82 PathProgramCache]: Analyzing trace with hash -408520283, now seen corresponding path program 1 times [2020-10-19 22:22:35,075 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:35,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755851216] [2020-10-19 22:22:35,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:35,181 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:35,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755851216] [2020-10-19 22:22:35,182 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1159095433] [2020-10-19 22:22:35,182 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 [2020-10-19 22:22:35,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:35,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 17 conjunts are in the unsatisfiable core [2020-10-19 22:22:35,243 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:35,339 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:35,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:35,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-19 22:22:35,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998430220] [2020-10-19 22:22:35,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:22:35,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:35,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:22:35,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:22:35,342 INFO L87 Difference]: Start difference. First operand 74 states and 88 transitions. Second operand 10 states. [2020-10-19 22:22:35,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:35,595 INFO L93 Difference]: Finished difference Result 126 states and 154 transitions. [2020-10-19 22:22:35,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:22:35,596 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 58 [2020-10-19 22:22:35,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:35,597 INFO L225 Difference]: With dead ends: 126 [2020-10-19 22:22:35,597 INFO L226 Difference]: Without dead ends: 79 [2020-10-19 22:22:35,598 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 [2020-10-19 22:22:35,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-19 22:22:35,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 75. [2020-10-19 22:22:35,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-19 22:22:35,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 89 transitions. [2020-10-19 22:22:35,604 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 89 transitions. Word has length 58 [2020-10-19 22:22:35,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:35,604 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 89 transitions. [2020-10-19 22:22:35,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:22:35,605 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 89 transitions. [2020-10-19 22:22:35,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-19 22:22:35,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:35,606 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] [2020-10-19 22:22:35,819 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,15 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:35,820 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:35,821 INFO L82 PathProgramCache]: Analyzing trace with hash -807057443, now seen corresponding path program 1 times [2020-10-19 22:22:35,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:35,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074391907] [2020-10-19 22:22:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:35,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:35,917 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074391907] [2020-10-19 22:22:35,918 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760684784] [2020-10-19 22:22:35,918 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 [2020-10-19 22:22:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:36,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 9 conjunts are in the unsatisfiable core [2020-10-19 22:22:36,001 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:36,028 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:36,028 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-19 22:22:36,029 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 10 [2020-10-19 22:22:36,029 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91376141] [2020-10-19 22:22:36,030 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-19 22:22:36,030 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:36,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-19 22:22:36,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-10-19 22:22:36,031 INFO L87 Difference]: Start difference. First operand 75 states and 89 transitions. Second operand 10 states. [2020-10-19 22:22:36,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:36,111 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-10-19 22:22:36,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-19 22:22:36,112 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 59 [2020-10-19 22:22:36,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:36,113 INFO L225 Difference]: With dead ends: 149 [2020-10-19 22:22:36,113 INFO L226 Difference]: Without dead ends: 103 [2020-10-19 22:22:36,113 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 [2020-10-19 22:22:36,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-19 22:22:36,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 77. [2020-10-19 22:22:36,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-19 22:22:36,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 91 transitions. [2020-10-19 22:22:36,123 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 91 transitions. Word has length 59 [2020-10-19 22:22:36,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:36,124 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 91 transitions. [2020-10-19 22:22:36,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-19 22:22:36,124 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 91 transitions. [2020-10-19 22:22:36,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-19 22:22:36,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:36,126 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] [2020-10-19 22:22:36,339 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2020-10-19 22:22:36,339 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:36,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:36,341 INFO L82 PathProgramCache]: Analyzing trace with hash -2016429986, now seen corresponding path program 2 times [2020-10-19 22:22:36,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:36,341 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587850079] [2020-10-19 22:22:36,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-19 22:22:36,503 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 63 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-19 22:22:36,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587850079] [2020-10-19 22:22:36,504 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154380489] [2020-10-19 22:22:36,505 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 [2020-10-19 22:22:36,721 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2020-10-19 22:22:36,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-19 22:22:36,723 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 14 conjunts are in the unsatisfiable core [2020-10-19 22:22:36,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-19 22:22:36,912 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-19 22:22:36,913 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-10-19 22:22:36,913 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2020-10-19 22:22:36,913 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080951616] [2020-10-19 22:22:36,914 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-19 22:22:36,915 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-19 22:22:36,915 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-19 22:22:36,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-10-19 22:22:36,915 INFO L87 Difference]: Start difference. First operand 77 states and 91 transitions. Second operand 8 states. [2020-10-19 22:22:37,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-19 22:22:37,123 INFO L93 Difference]: Finished difference Result 80 states and 94 transitions. [2020-10-19 22:22:37,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-19 22:22:37,123 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 61 [2020-10-19 22:22:37,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-19 22:22:37,123 INFO L225 Difference]: With dead ends: 80 [2020-10-19 22:22:37,124 INFO L226 Difference]: Without dead ends: 0 [2020-10-19 22:22:37,126 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 [2020-10-19 22:22:37,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-19 22:22:37,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-19 22:22:37,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-19 22:22:37,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-19 22:22:37,127 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-10-19 22:22:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-19 22:22:37,127 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-19 22:22:37,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-19 22:22:37,127 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-19 22:22:37,127 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-19 22:22:37,331 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,17 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-19 22:22:37,333 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-19 22:22:37,693 INFO L274 CegarLoopResult]: For program point L3(line 3) no Hoare annotation was computed. [2020-10-19 22:22:37,693 INFO L274 CegarLoopResult]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L235(lines 235 244) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L235-2(lines 235 244) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L252(lines 252 256) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L186(lines 186 203) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L252-2(lines 252 256) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L186-2(lines 186 203) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L21(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L21-1(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:37,694 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:37,695 INFO L274 CegarLoopResult]: For program point L21-3(lines 21 26) no Hoare annotation was computed. [2020-10-19 22:22:37,695 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)) [2020-10-19 22:22:37,696 INFO L270 CegarLoopResult]: At program point L71-1(lines 20 73) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:37,696 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)) [2020-10-19 22:22:37,697 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)) [2020-10-19 22:22:37,697 INFO L274 CegarLoopResult]: For program point L187(lines 187 192) no Hoare annotation was computed. [2020-10-19 22:22:37,697 INFO L274 CegarLoopResult]: For program point L171(lines 171 176) no Hoare annotation was computed. [2020-10-19 22:22:37,697 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)) [2020-10-19 22:22:37,697 INFO L274 CegarLoopResult]: For program point L39(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:37,698 INFO L270 CegarLoopResult]: At program point L72-1(lines 16 74) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:37,698 INFO L270 CegarLoopResult]: At program point L39-1(lines 29 44) the Hoare annotation is: false [2020-10-19 22:22:37,698 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)) [2020-10-19 22:22:37,698 INFO L274 CegarLoopResult]: For program point L39-2(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:37,698 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))) [2020-10-19 22:22:37,698 INFO L270 CegarLoopResult]: At program point L39-3(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:37,699 INFO L274 CegarLoopResult]: For program point L39-4(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:37,699 INFO L270 CegarLoopResult]: At program point L39-5(lines 29 44) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:37,699 INFO L274 CegarLoopResult]: For program point L39-6(lines 39 43) no Hoare annotation was computed. [2020-10-19 22:22:37,700 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)) [2020-10-19 22:22:37,700 INFO L274 CegarLoopResult]: For program point L238(lines 238 242) no Hoare annotation was computed. [2020-10-19 22:22:37,700 INFO L274 CegarLoopResult]: For program point L238-2(lines 238 242) no Hoare annotation was computed. [2020-10-19 22:22:37,700 INFO L274 CegarLoopResult]: For program point L8(lines 8 10) no Hoare annotation was computed. [2020-10-19 22:22:37,700 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-19 22:22:37,700 INFO L274 CegarLoopResult]: For program point L9(line 9) no Hoare annotation was computed. [2020-10-19 22:22:37,702 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)) [2020-10-19 22:22:37,702 INFO L274 CegarLoopResult]: For program point L27(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:37,702 INFO L274 CegarLoopResult]: For program point L27-1(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:37,702 INFO L274 CegarLoopResult]: For program point L27-2(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:37,703 INFO L274 CegarLoopResult]: For program point L27-3(lines 27 67) no Hoare annotation was computed. [2020-10-19 22:22:37,703 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)) [2020-10-19 22:22:37,703 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-19 22:22:37,703 INFO L274 CegarLoopResult]: For program point L177(lines 177 182) no Hoare annotation was computed. [2020-10-19 22:22:37,703 INFO L274 CegarLoopResult]: For program point L195(lines 195 200) no Hoare annotation was computed. [2020-10-19 22:22:37,703 INFO L274 CegarLoopResult]: For program point L30(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:37,704 INFO L274 CegarLoopResult]: For program point L30-1(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:37,704 INFO L274 CegarLoopResult]: For program point L30-2(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:37,704 INFO L274 CegarLoopResult]: For program point L30-3(lines 29 44) no Hoare annotation was computed. [2020-10-19 22:22:37,704 INFO L270 CegarLoopResult]: At program point L65(lines 27 67) the Hoare annotation is: false [2020-10-19 22:22:37,704 INFO L270 CegarLoopResult]: At program point L65-1(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:37,704 INFO L274 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-10-19 22:22:37,705 INFO L270 CegarLoopResult]: At program point L65-2(lines 27 67) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:37,705 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)) [2020-10-19 22:22:37,705 INFO L274 CegarLoopResult]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-19 22:22:37,705 INFO L270 CegarLoopResult]: At program point L49-2(lines 49 64) the Hoare annotation is: false [2020-10-19 22:22:37,705 INFO L270 CegarLoopResult]: At program point L49-5(lines 49 64) the Hoare annotation is: false [2020-10-19 22:22:37,706 INFO L270 CegarLoopResult]: At program point L49-8(lines 49 64) the Hoare annotation is: (= ULTIMATE.start_main_~zero~0 0) [2020-10-19 22:22:37,706 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)) [2020-10-19 22:22:37,706 INFO L274 CegarLoopResult]: For program point L248(lines 248 264) no Hoare annotation was computed. [2020-10-19 22:22:37,706 INFO L277 CegarLoopResult]: At program point L248-1(lines 248 264) the Hoare annotation is: true [2020-10-19 22:22:37,706 INFO L274 CegarLoopResult]: For program point L50(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,707 INFO L274 CegarLoopResult]: For program point L50-1(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,707 INFO L274 CegarLoopResult]: For program point L50-2(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,707 INFO L274 CegarLoopResult]: For program point L50-3(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,708 INFO L274 CegarLoopResult]: For program point L249(lines 249 258) no Hoare annotation was computed. [2020-10-19 22:22:37,708 INFO L274 CegarLoopResult]: For program point L249-2(lines 249 258) no Hoare annotation was computed. [2020-10-19 22:22:37,708 INFO L274 CegarLoopResult]: For program point L150(lines 150 156) no Hoare annotation was computed. [2020-10-19 22:22:37,708 INFO L274 CegarLoopResult]: For program point L150-2(lines 149 210) no Hoare annotation was computed. [2020-10-19 22:22:37,708 INFO L274 CegarLoopResult]: For program point L51(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,709 INFO L274 CegarLoopResult]: For program point L51-1(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,709 INFO L274 CegarLoopResult]: For program point L51-2(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,709 INFO L274 CegarLoopResult]: For program point L51-3(lines 49 64) no Hoare annotation was computed. [2020-10-19 22:22:37,709 INFO L277 CegarLoopResult]: At program point L266(lines 212 268) the Hoare annotation is: true [2020-10-19 22:22:37,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:37 BoogieIcfgContainer [2020-10-19 22:22:37,757 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:37,758 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:37,758 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:37,758 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:37,759 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:25" (3/4) ... [2020-10-19 22:22:37,764 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-10-19 22:22:37,788 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2020-10-19 22:22:37,789 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-10-19 22:22:37,789 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:22:37,790 INFO L902 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-10-19 22:22:37,831 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: ((e == 0 && \result == 0) && __retres4 == 0) && m == 0 [2020-10-19 22:22:37,834 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (\result == 0 && __retres4 == 0) || zero == 0 [2020-10-19 22:22:37,836 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (a == 0 || zero == 0) || ((\result == 0 && zero % 4294967296 <= 0) && __retres4 == 0) [2020-10-19 22:22:37,837 WARN L221 nessWitnessGenerator]: Not writing invariant because ACSL is forbidden: (((__retres10 == 0 && zero % 4294967296 <= 0) && \result == 0) || (sa == 1 && tmp == 1)) || sa + 1 <= 0 [2020-10-19 22:22:37,907 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:22:37,908 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:37,910 INFO L168 Benchmark]: Toolchain (without parser) took 13074.62 ms. Allocated memory was 39.8 MB in the beginning and 81.3 MB in the end (delta: 41.4 MB). Free memory was 17.4 MB in the beginning and 13.0 MB in the end (delta: 4.4 MB). Peak memory consumption was 45.8 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,911 INFO L168 Benchmark]: CDTParser took 1.01 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.0 MB in the end (delta: 37.8 kB). Peak memory consumption was 37.8 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 380.34 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.5 MB in the beginning and 13.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,912 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.89 ms. Allocated memory is still 40.9 MB. Free memory was 13.4 MB in the beginning and 11.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,913 INFO L168 Benchmark]: Boogie Preprocessor took 47.87 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 11.0 MB in the beginning and 23.3 MB in the end (delta: -12.3 MB). Peak memory consumption was 60.6 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,913 INFO L168 Benchmark]: RCFGBuilder took 639.15 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 23.3 MB in the beginning and 25.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,914 INFO L168 Benchmark]: TraceAbstraction took 11786.90 ms. Allocated memory was 43.0 MB in the beginning and 81.3 MB in the end (delta: 38.3 MB). Free memory was 24.8 MB in the beginning and 19.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 54.2 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,914 INFO L168 Benchmark]: Witness Printer took 149.82 ms. Allocated memory is still 81.3 MB. Free memory was 19.7 MB in the beginning and 13.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:37,918 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.01 ms. Allocated memory is still 30.9 MB. Free memory was 17.1 MB in the beginning and 17.0 MB in the end (delta: 37.8 kB). Peak memory consumption was 37.8 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 380.34 ms. Allocated memory was 39.8 MB in the beginning and 40.9 MB in the end (delta: 1.0 MB). Free memory was 16.5 MB in the beginning and 13.4 MB in the end (delta: 3.1 MB). Peak memory consumption was 6.5 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 58.89 ms. Allocated memory is still 40.9 MB. Free memory was 13.4 MB in the beginning and 11.0 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 47.87 ms. Allocated memory was 40.9 MB in the beginning and 41.4 MB in the end (delta: 524.3 kB). Free memory was 11.0 MB in the beginning and 23.3 MB in the end (delta: -12.3 MB). Peak memory consumption was 60.6 kB. Max. memory is 14.3 GB. * RCFGBuilder took 639.15 ms. Allocated memory was 41.4 MB in the beginning and 43.0 MB in the end (delta: 1.6 MB). Free memory was 23.3 MB in the beginning and 25.3 MB in the end (delta: -2.0 MB). Peak memory consumption was 14.3 MB. Max. memory is 14.3 GB. * TraceAbstraction took 11786.90 ms. Allocated memory was 43.0 MB in the beginning and 81.3 MB in the end (delta: 38.3 MB). Free memory was 24.8 MB in the beginning and 19.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 54.2 MB. Max. memory is 14.3 GB. * Witness Printer took 149.82 ms. Allocated memory is still 81.3 MB. Free memory was 19.7 MB in the beginning and 13.0 MB in the end (delta: 6.7 MB). Peak memory consumption was 6.7 MB. Max. memory is 14.3 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: 11.2s, OverallIterations: 23, TraceHistogramMax: 7, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 2070 SDtfs, 1284 SDslu, 5197 SDs, 0 SdLazy, 1986 SolverSat, 177 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 891 GetRequests, 724 SyntacticMatches, 17 SemanticMatches, 150 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.6s 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, 0.1s HoareSimplificationTime, 24 FomulaSimplificationsInter, 163 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 2.3s 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...