/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:22:45,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:22:45,848 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:22:45,868 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 17:22:45,894 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:22:45,896 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:22:45,898 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:22:45,899 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:22:45,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:22:45,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:22:45,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:22:45,908 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:22:45,913 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:22:45,917 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:22:45,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:22:45,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:22:45,921 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:22:45,931 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 17:22:45,931 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 17:22:45,933 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 17:22:45,934 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 17:22:45,970 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:22:45,970 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:22:45,973 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:22:45,973 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:22:45,974 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:22:45,974 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:22:45,974 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:22:45,974 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:22:45,975 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:22:45,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:22:45,978 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:22:45,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:22:45,979 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:22:45,979 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:22:45,979 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:22:45,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:22:45,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:22:45,980 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:22:45,980 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:22:45,981 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:22:45,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:22:45,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:22:45,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:22:45,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:22:45,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:22:45,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:22:45,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:45,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:22:45,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:22:45,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 17:22:46,272 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:22:46,283 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:22:46,286 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:22:46,288 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:22:46,288 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:22:46,289 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-07-20 17:22:46,346 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6240a795/7b0c4c63d20546cf931665f1af4e5c9d/FLAGfb5d183f3 [2020-07-20 17:22:46,926 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:22:46,927 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label39.c [2020-07-20 17:22:46,942 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6240a795/7b0c4c63d20546cf931665f1af4e5c9d/FLAGfb5d183f3 [2020-07-20 17:22:47,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6240a795/7b0c4c63d20546cf931665f1af4e5c9d [2020-07-20 17:22:47,181 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:22:47,184 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:22:47,185 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:22:47,185 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:22:47,188 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:22:47,190 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:22:47" (1/1) ... [2020-07-20 17:22:47,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@520ecaff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:47, skipping insertion in model container [2020-07-20 17:22:47,193 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:22:47" (1/1) ... [2020-07-20 17:22:47,200 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:22:47,260 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:22:47,942 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:22:47,947 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:22:48,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:22:48,091 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:22:48,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48 WrapperNode [2020-07-20 17:22:48,092 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:22:48,093 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:22:48,093 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:22:48,093 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:22:48,108 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (1/1) ... [2020-07-20 17:22:48,110 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (1/1) ... [2020-07-20 17:22:48,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (1/1) ... [2020-07-20 17:22:48,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (1/1) ... [2020-07-20 17:22:48,186 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (1/1) ... [2020-07-20 17:22:48,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (1/1) ... [2020-07-20 17:22:48,220 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (1/1) ... [2020-07-20 17:22:48,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:22:48,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:22:48,237 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:22:48,237 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:22:48,238 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (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 [2020-07-20 17:22:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:22:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:22:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 17:22:48,330 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:22:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 17:22:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:22:48,331 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 17:22:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 17:22:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:22:48,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:22:48,333 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:22:49,509 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:22:49,510 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 17:22:49,516 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:22:49 BoogieIcfgContainer [2020-07-20 17:22:49,516 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:22:49,518 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:22:49,518 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:22:49,521 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:22:49,521 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:22:47" (1/3) ... [2020-07-20 17:22:49,522 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7721ed2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:22:49, skipping insertion in model container [2020-07-20 17:22:49,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:22:48" (2/3) ... [2020-07-20 17:22:49,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7721ed2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:22:49, skipping insertion in model container [2020-07-20 17:22:49,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:22:49" (3/3) ... [2020-07-20 17:22:49,525 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label39.c [2020-07-20 17:22:49,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:22:49,545 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:22:49,561 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:22:49,589 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:22:49,589 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:22:49,589 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:22:49,589 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:22:49,590 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:22:49,590 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:22:49,590 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:22:49,590 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:22:49,616 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 17:22:49,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-07-20 17:22:49,632 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:22:49,633 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:22:49,633 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:22:49,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:22:49,640 INFO L82 PathProgramCache]: Analyzing trace with hash -223585418, now seen corresponding path program 1 times [2020-07-20 17:22:49,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:22:49,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [267301] [2020-07-20 17:22:49,650 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:49,868 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:22:49,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:22:49,872 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 17:22:49,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:22:50,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:22:50,012 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:22:50,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [267301] [2020-07-20 17:22:50,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:22:50,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:22:50,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104203497] [2020-07-20 17:22:50,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:22:50,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:22:50,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:22:50,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:50,040 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 17:22:50,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:22:50,928 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-20 17:22:50,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:22:50,930 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 138 [2020-07-20 17:22:50,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:22:50,946 INFO L225 Difference]: With dead ends: 547 [2020-07-20 17:22:50,946 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 17:22:50,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:50,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 17:22:51,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 17:22:51,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 17:22:51,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 394 transitions. [2020-07-20 17:22:51,023 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 394 transitions. Word has length 138 [2020-07-20 17:22:51,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:22:51,024 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 394 transitions. [2020-07-20 17:22:51,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:22:51,025 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 394 transitions. [2020-07-20 17:22:51,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-07-20 17:22:51,029 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:22:51,030 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:22:51,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:51,245 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:22:51,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:22:51,246 INFO L82 PathProgramCache]: Analyzing trace with hash -940546995, now seen corresponding path program 1 times [2020-07-20 17:22:51,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:22:51,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [853451570] [2020-07-20 17:22:51,247 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:51,404 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:22:51,404 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:22:51,406 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:22:51,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:22:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:22:51,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:22:51,469 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [853451570] [2020-07-20 17:22:51,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:22:51,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:22:51,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020477957] [2020-07-20 17:22:51,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:22:51,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:22:51,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:22:51,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:51,473 INFO L87 Difference]: Start difference. First operand 278 states and 394 transitions. Second operand 3 states. [2020-07-20 17:22:52,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:22:52,015 INFO L93 Difference]: Finished difference Result 820 states and 1181 transitions. [2020-07-20 17:22:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:22:52,015 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 148 [2020-07-20 17:22:52,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:22:52,021 INFO L225 Difference]: With dead ends: 820 [2020-07-20 17:22:52,022 INFO L226 Difference]: Without dead ends: 548 [2020-07-20 17:22:52,024 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 147 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:52,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 548 states. [2020-07-20 17:22:52,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 548 to 548. [2020-07-20 17:22:52,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 548 states. [2020-07-20 17:22:52,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 734 transitions. [2020-07-20 17:22:52,058 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 734 transitions. Word has length 148 [2020-07-20 17:22:52,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:22:52,078 INFO L479 AbstractCegarLoop]: Abstraction has 548 states and 734 transitions. [2020-07-20 17:22:52,079 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:22:52,079 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 734 transitions. [2020-07-20 17:22:52,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-20 17:22:52,089 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:22:52,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:22:52,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:52,293 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:22:52,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:22:52,294 INFO L82 PathProgramCache]: Analyzing trace with hash 938454151, now seen corresponding path program 1 times [2020-07-20 17:22:52,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:22:52,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080959070] [2020-07-20 17:22:52,295 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:52,417 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:22:52,417 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:22:52,418 INFO L263 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:22:52,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:22:52,487 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:22:52,487 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:22:52,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080959070] [2020-07-20 17:22:52,488 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:22:52,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:22:52,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624884447] [2020-07-20 17:22:52,491 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:22:52,491 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:22:52,492 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:22:52,492 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:52,501 INFO L87 Difference]: Start difference. First operand 548 states and 734 transitions. Second operand 3 states. [2020-07-20 17:22:53,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:22:53,149 INFO L93 Difference]: Finished difference Result 1360 states and 1855 transitions. [2020-07-20 17:22:53,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:22:53,150 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 153 [2020-07-20 17:22:53,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:22:53,157 INFO L225 Difference]: With dead ends: 1360 [2020-07-20 17:22:53,157 INFO L226 Difference]: Without dead ends: 818 [2020-07-20 17:22:53,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 818 states. [2020-07-20 17:22:53,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 818 to 818. [2020-07-20 17:22:53,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 818 states. [2020-07-20 17:22:53,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 818 states to 818 states and 1060 transitions. [2020-07-20 17:22:53,209 INFO L78 Accepts]: Start accepts. Automaton has 818 states and 1060 transitions. Word has length 153 [2020-07-20 17:22:53,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:22:53,231 INFO L479 AbstractCegarLoop]: Abstraction has 818 states and 1060 transitions. [2020-07-20 17:22:53,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:22:53,231 INFO L276 IsEmpty]: Start isEmpty. Operand 818 states and 1060 transitions. [2020-07-20 17:22:53,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-07-20 17:22:53,235 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:22:53,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:22:53,448 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:53,449 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:22:53,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:22:53,449 INFO L82 PathProgramCache]: Analyzing trace with hash 1348840640, now seen corresponding path program 1 times [2020-07-20 17:22:53,450 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:22:53,450 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883765092] [2020-07-20 17:22:53,450 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:53,574 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:22:53,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:22:53,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 457 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:22:53,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:22:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-07-20 17:22:53,631 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:22:53,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883765092] [2020-07-20 17:22:53,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:22:53,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:22:53,632 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794129515] [2020-07-20 17:22:53,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:22:53,633 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:22:53,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:22:53,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:53,634 INFO L87 Difference]: Start difference. First operand 818 states and 1060 transitions. Second operand 3 states. [2020-07-20 17:22:54,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:22:54,277 INFO L93 Difference]: Finished difference Result 2035 states and 2696 transitions. [2020-07-20 17:22:54,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:22:54,278 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 171 [2020-07-20 17:22:54,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:22:54,285 INFO L225 Difference]: With dead ends: 2035 [2020-07-20 17:22:54,285 INFO L226 Difference]: Without dead ends: 1223 [2020-07-20 17:22:54,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:54,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2020-07-20 17:22:54,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 1088. [2020-07-20 17:22:54,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1088 states. [2020-07-20 17:22:54,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1409 transitions. [2020-07-20 17:22:54,328 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1409 transitions. Word has length 171 [2020-07-20 17:22:54,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:22:54,329 INFO L479 AbstractCegarLoop]: Abstraction has 1088 states and 1409 transitions. [2020-07-20 17:22:54,329 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:22:54,329 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1409 transitions. [2020-07-20 17:22:54,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-20 17:22:54,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:22:54,335 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:22:54,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:54,542 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:22:54,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:22:54,543 INFO L82 PathProgramCache]: Analyzing trace with hash -167136995, now seen corresponding path program 1 times [2020-07-20 17:22:54,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:22:54,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1219258940] [2020-07-20 17:22:54,545 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:54,673 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:22:54,673 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:22:54,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:22:54,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:22:54,740 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:22:54,741 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:22:54,741 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1219258940] [2020-07-20 17:22:54,741 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:22:54,742 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 17:22:54,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829209151] [2020-07-20 17:22:54,743 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 17:22:54,743 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:22:54,744 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 17:22:54,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:54,746 INFO L87 Difference]: Start difference. First operand 1088 states and 1409 transitions. Second operand 3 states. [2020-07-20 17:22:55,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:22:55,331 INFO L93 Difference]: Finished difference Result 2303 states and 3005 transitions. [2020-07-20 17:22:55,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 17:22:55,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 172 [2020-07-20 17:22:55,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:22:55,332 INFO L225 Difference]: With dead ends: 2303 [2020-07-20 17:22:55,332 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 17:22:55,337 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 17:22:55,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 17:22:55,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 17:22:55,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 17:22:55,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 17:22:55,338 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 172 [2020-07-20 17:22:55,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:22:55,338 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 17:22:55,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 17:22:55,338 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 17:22:55,338 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 17:22:55,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:22:55,541 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 17:22:55,862 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:22:55,863 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:22:55,863 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:22:55,863 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 17:22:55,863 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 17:22:55,863 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,863 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,863 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,864 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,864 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,864 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,864 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 17:22:55,864 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 17:22:55,864 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 17:22:55,864 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 17:22:55,865 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 17:22:55,865 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 17:22:55,865 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 17:22:55,865 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 17:22:55,865 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 17:22:55,865 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 17:22:55,865 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,866 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,866 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,866 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,866 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,866 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,866 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 17:22:55,866 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 17:22:55,867 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 17:22:55,867 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 17:22:55,867 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 17:22:55,867 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 17:22:55,867 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 17:22:55,867 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 17:22:55,867 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 17:22:55,868 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 17:22:55,868 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 17:22:55,868 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 572) no Hoare annotation was computed. [2020-07-20 17:22:55,868 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 17:22:55,868 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 17:22:55,868 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 17:22:55,869 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 17:22:55,870 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 17:22:55,871 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 17:22:55,872 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 17:22:55,872 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 17:22:55,872 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 17:22:55,872 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 17:22:55,872 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 17:22:55,872 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 17:22:55,872 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,873 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 17:22:55,874 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 17:22:55,875 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 17:22:55,876 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,877 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,878 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 17:22:55,878 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 17:22:55,878 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 17:22:55,878 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 17:22:55,878 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 17:22:55,878 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 17:22:55,878 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 17:22:55,879 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 17:22:55,879 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,879 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,879 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,879 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,879 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,879 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 17:22:55,880 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 17:22:55,881 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 17:22:55,881 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (and (or (not (<= |old(~a16~0)| 4)) (<= ~a16~0 4)) (or (not (<= 14 |old(~a8~0)|)) (<= 14 ~a8~0)) (or (not (<= |old(~a21~0)| 0)) (<= ~a21~0 0)) (or (<= 6 ~a16~0) (not (<= 6 |old(~a16~0)|))) (or (not (<= 15 |old(~a8~0)|)) (<= 15 ~a8~0))) [2020-07-20 17:22:55,881 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 17:22:55,881 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,881 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,881 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,881 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 17:22:55,882 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 17:22:55,883 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 17:22:55,883 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 17:22:55,883 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 17:22:55,883 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 17:22:55,883 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 17:22:55,883 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 17:22:55,883 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,884 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 17:22:55,885 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,886 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 17:22:55,887 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 17:22:55,888 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 17:22:55,888 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 17:22:55,888 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 17:22:55,888 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 17:22:55,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 17:22:55,888 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (<= 15 ~a8~0) [2020-07-20 17:22:55,888 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 17:22:55,888 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 17:22:55,889 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (<= 15 ~a8~0)) [2020-07-20 17:22:55,889 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 17:22:55,889 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (<= ~a21~0 0) (<= 6 ~a16~0) (<= 14 ~a8~0) (<= ~a16~0 4)) [2020-07-20 17:22:55,889 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 17:22:55,889 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 17:22:55,889 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (or (not (<= 15 |old(~a8~0)|)) (<= ~a21~0 0) (<= 6 ~a16~0) (<= 14 ~a8~0) (<= ~a16~0 4)) [2020-07-20 17:22:55,889 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 17:22:55,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:22:55 BoogieIcfgContainer [2020-07-20 17:22:55,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:22:55,910 INFO L168 Benchmark]: Toolchain (without parser) took 8727.61 ms. Allocated memory was 144.2 MB in the beginning and 318.8 MB in the end (delta: 174.6 MB). Free memory was 100.3 MB in the beginning and 251.6 MB in the end (delta: -151.3 MB). Peak memory consumption was 187.3 MB. Max. memory is 7.1 GB. [2020-07-20 17:22:55,911 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 17:22:55,912 INFO L168 Benchmark]: CACSL2BoogieTranslator took 908.04 ms. Allocated memory was 144.2 MB in the beginning and 207.1 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 172.2 MB in the end (delta: -72.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. [2020-07-20 17:22:55,913 INFO L168 Benchmark]: Boogie Preprocessor took 143.21 ms. Allocated memory is still 207.1 MB. Free memory was 172.2 MB in the beginning and 167.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-20 17:22:55,914 INFO L168 Benchmark]: RCFGBuilder took 1280.00 ms. Allocated memory was 207.1 MB in the beginning and 237.5 MB in the end (delta: 30.4 MB). Free memory was 167.1 MB in the beginning and 181.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. [2020-07-20 17:22:55,915 INFO L168 Benchmark]: TraceAbstraction took 6390.22 ms. Allocated memory was 237.5 MB in the beginning and 318.8 MB in the end (delta: 81.3 MB). Free memory was 181.0 MB in the beginning and 251.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 174.7 MB. Max. memory is 7.1 GB. [2020-07-20 17:22:55,919 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 144.2 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 908.04 ms. Allocated memory was 144.2 MB in the beginning and 207.1 MB in the end (delta: 62.9 MB). Free memory was 99.9 MB in the beginning and 172.2 MB in the end (delta: -72.3 MB). Peak memory consumption was 30.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.21 ms. Allocated memory is still 207.1 MB. Free memory was 172.2 MB in the beginning and 167.1 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1280.00 ms. Allocated memory was 207.1 MB in the beginning and 237.5 MB in the end (delta: 30.4 MB). Free memory was 167.1 MB in the beginning and 181.0 MB in the end (delta: -13.9 MB). Peak memory consumption was 84.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6390.22 ms. Allocated memory was 237.5 MB in the beginning and 318.8 MB in the end (delta: 81.3 MB). Free memory was 181.0 MB in the beginning and 251.6 MB in the end (delta: -70.6 MB). Peak memory consumption was 174.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 572]: 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: 583]: Loop Invariant Derived loop invariant: (((!(15 <= \old(a8)) || a21 <= 0) || 6 <= a16) || 14 <= a8) || a16 <= 4 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 3.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 757 SDtfs, 83 SDslu, 70 SDs, 0 SdLazy, 1795 SolverSat, 309 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 777 GetRequests, 772 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1088occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 135 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 36 PreInvPairs, 54 NumberOfFragments, 88 HoareAnnotationTreeSize, 36 FomulaSimplifications, 96 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 7 FomulaSimplificationsInter, 124 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 782 NumberOfCodeBlocks, 782 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 777 ConstructedInterpolants, 0 QuantifiedInterpolants, 330133 SizeOfPredicates, 11 NumberOfNonLiveVariables, 1946 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 5 InterpolantComputations, 5 PerfectInterpolantSequences, 87/87 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...