/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 BIGGEST_EQUIVALENCE_CLASS --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_label08.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:18:05,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:18:05,861 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:18:05,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 01:18:05,901 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:18:05,904 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:18:05,906 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:18:05,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:18:05,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:18:05,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:18:05,911 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:18:05,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:18:05,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:18:05,918 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:18:05,919 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:18:05,920 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:18:05,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:18:05,928 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:18:05,929 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:18:05,930 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:18:05,931 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 [2020-07-21 01:18:05,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:18:05,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:18:05,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:18:05,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:18:05,946 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:18:05,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:18:05,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:18:05,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:18:05,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:18:05,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:18:05,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:18:05,948 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:18:05,948 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:18:05,948 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:18:05,948 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:18:05,948 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:18:05,949 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:18:05,949 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:18:05,949 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:18:05,949 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:18:05,949 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:18:05,950 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:18:05,950 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:18:05,950 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:18:05,950 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:18:05,950 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:18:05,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:05,951 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:18:05,951 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:18:05,951 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 01:18:06,241 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:18:06,264 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:18:06,268 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:18:06,270 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:18:06,272 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:18:06,274 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-07-21 01:18:06,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7976516d4/be7af18cbd274d678f0521cca854933a/FLAGc2c832146 [2020-07-21 01:18:06,939 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:18:06,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label08.c [2020-07-21 01:18:06,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7976516d4/be7af18cbd274d678f0521cca854933a/FLAGc2c832146 [2020-07-21 01:18:07,242 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7976516d4/be7af18cbd274d678f0521cca854933a [2020-07-21 01:18:07,251 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:18:07,254 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:18:07,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:18:07,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:18:07,259 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:18:07,260 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:07,263 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@137c89f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07, skipping insertion in model container [2020-07-21 01:18:07,263 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:07,271 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:18:07,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:18:07,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:18:07,838 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:18:07,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:18:07,956 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:18:07,956 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07 WrapperNode [2020-07-21 01:18:07,956 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:18:07,957 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:18:07,957 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:18:07,957 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:18:07,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:07,974 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:07,993 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:07,994 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:08,043 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:08,068 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:08,073 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (1/1) ... [2020-07-21 01:18:08,080 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:18:08,081 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:18:08,081 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:18:08,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:18:08,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (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 [2020-07-21 01:18:08,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:18:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:18:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:18:08,159 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:18:08,159 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:18:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:18:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:18:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:18:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:18:08,160 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:18:08,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:18:09,513 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:18:09,514 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:18:09,520 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:18:09 BoogieIcfgContainer [2020-07-21 01:18:09,520 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:18:09,521 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:18:09,522 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:18:09,525 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:18:09,525 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:18:07" (1/3) ... [2020-07-21 01:18:09,526 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc7e3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:18:09, skipping insertion in model container [2020-07-21 01:18:09,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:18:07" (2/3) ... [2020-07-21 01:18:09,527 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fc7e3b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:18:09, skipping insertion in model container [2020-07-21 01:18:09,527 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:18:09" (3/3) ... [2020-07-21 01:18:09,529 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label08.c [2020-07-21 01:18:09,541 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:18:09,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:18:09,567 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:18:09,596 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:18:09,596 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:18:09,596 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:18:09,596 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:18:09,597 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:18:09,597 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:18:09,597 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:18:09,597 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:18:09,623 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:18:09,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-21 01:18:09,640 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:09,642 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] [2020-07-21 01:18:09,642 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:09,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:09,649 INFO L82 PathProgramCache]: Analyzing trace with hash -1920403729, now seen corresponding path program 1 times [2020-07-21 01:18:09,659 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:09,660 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698843120] [2020-07-21 01:18:09,660 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 [2020-07-21 01:18:09,855 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:09,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:09,860 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:18:09,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:10,247 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:18:10,390 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 29 [2020-07-21 01:18:10,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:10,809 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:10,810 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698843120] [2020-07-21 01:18:10,811 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:10,811 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:18:10,812 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627675618] [2020-07-21 01:18:10,817 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:18:10,818 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:10,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:18:10,833 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:10,835 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:18:12,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:12,561 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:18:12,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:12,564 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 119 [2020-07-21 01:18:12,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:12,583 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:18:12,583 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:18:12,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:18:12,609 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:18:12,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:18:12,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:18:12,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:18:12,650 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 119 [2020-07-21 01:18:12,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:12,651 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:18:12,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:18:12,652 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:18:12,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-21 01:18:12,655 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:12,656 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:12,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:12,869 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:12,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:12,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1091899828, now seen corresponding path program 1 times [2020-07-21 01:18:12,870 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:12,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [575788863] [2020-07-21 01:18:12,870 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 [2020-07-21 01:18:12,976 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:12,976 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:12,979 INFO L263 TraceCheckSpWp]: Trace formula consists of 317 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:18:12,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:13,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:13,700 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:18:13,700 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:18:13,798 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:13,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:14,540 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:18:14,697 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:18:14,846 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:18:14,978 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:18:14,983 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:18:14,985 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:18:14,987 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:18:14,989 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:18:14,990 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:14,991 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:18:14,996 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:18:14,997 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:18:14,999 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:15,008 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:15,010 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:15,013 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:18:15,014 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:15,015 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:15,016 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:15,021 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:15,022 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:15,024 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:15,025 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:15,026 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:18:15,027 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:15,037 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:15,038 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:15,043 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:18:15,044 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:18:15,631 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:18:15,635 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:18:15,635 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:18:15,697 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:18:15,698 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:15,794 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:15,818 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:16,010 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [575788863] [2020-07-21 01:18:16,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:16,011 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:18:16,011 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82848826] [2020-07-21 01:18:16,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:18:16,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:16,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:18:16,017 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:18:16,026 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:18:17,115 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:18:17,671 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 01:18:17,977 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:18:18,470 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:18:18,722 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:18:19,199 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:18:21,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:21,791 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 01:18:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:18:21,793 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 127 [2020-07-21 01:18:21,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:21,799 INFO L225 Difference]: With dead ends: 588 [2020-07-21 01:18:21,800 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 01:18:21,802 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 226 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:18:21,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 01:18:21,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 01:18:21,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:18:21,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 01:18:21,862 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 127 [2020-07-21 01:18:21,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:21,862 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 01:18:21,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:18:21,863 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 01:18:21,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-07-21 01:18:21,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:21,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:22,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:22,084 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:22,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:22,085 INFO L82 PathProgramCache]: Analyzing trace with hash -1525536778, now seen corresponding path program 1 times [2020-07-21 01:18:22,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:22,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053630278] [2020-07-21 01:18:22,087 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 [2020-07-21 01:18:22,184 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:18:22,185 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:22,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 364 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:18:22,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:22,215 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:22,216 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:22,216 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053630278] [2020-07-21 01:18:22,216 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:22,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:18:22,217 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416219119] [2020-07-21 01:18:22,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:18:22,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:22,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:18:22,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:22,219 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 01:18:22,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:22,803 INFO L93 Difference]: Finished difference Result 1044 states and 1436 transitions. [2020-07-21 01:18:22,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:18:22,805 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 130 [2020-07-21 01:18:22,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:22,815 INFO L225 Difference]: With dead ends: 1044 [2020-07-21 01:18:22,815 INFO L226 Difference]: Without dead ends: 693 [2020-07-21 01:18:22,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:22,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 693 states. [2020-07-21 01:18:22,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 693 to 691. [2020-07-21 01:18:22,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 01:18:22,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 917 transitions. [2020-07-21 01:18:22,852 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 917 transitions. Word has length 130 [2020-07-21 01:18:22,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:22,853 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 917 transitions. [2020-07-21 01:18:22,853 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:18:22,853 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 917 transitions. [2020-07-21 01:18:22,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-21 01:18:22,859 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:22,860 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:23,072 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:23,072 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:23,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:23,073 INFO L82 PathProgramCache]: Analyzing trace with hash 783313171, now seen corresponding path program 1 times [2020-07-21 01:18:23,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:23,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558503281] [2020-07-21 01:18:23,075 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 [2020-07-21 01:18:23,175 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:18:23,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:23,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:23,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:23,219 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:23,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:23,292 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 27 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:23,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558503281] [2020-07-21 01:18:23,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:23,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 01:18:23,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681897274] [2020-07-21 01:18:23,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:18:23,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:23,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:18:23,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:23,295 INFO L87 Difference]: Start difference. First operand 691 states and 917 transitions. Second operand 8 states. [2020-07-21 01:18:24,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:24,647 INFO L93 Difference]: Finished difference Result 2454 states and 3533 transitions. [2020-07-21 01:18:24,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:18:24,651 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 143 [2020-07-21 01:18:24,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:24,667 INFO L225 Difference]: With dead ends: 2454 [2020-07-21 01:18:24,667 INFO L226 Difference]: Without dead ends: 1829 [2020-07-21 01:18:24,670 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:24,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1829 states. [2020-07-21 01:18:24,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1829 to 1801. [2020-07-21 01:18:24,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1801 states. [2020-07-21 01:18:24,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1801 states to 1801 states and 2419 transitions. [2020-07-21 01:18:24,768 INFO L78 Accepts]: Start accepts. Automaton has 1801 states and 2419 transitions. Word has length 143 [2020-07-21 01:18:24,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:24,773 INFO L479 AbstractCegarLoop]: Abstraction has 1801 states and 2419 transitions. [2020-07-21 01:18:24,774 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:18:24,775 INFO L276 IsEmpty]: Start isEmpty. Operand 1801 states and 2419 transitions. [2020-07-21 01:18:24,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2020-07-21 01:18:24,784 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:24,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:24,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:25,000 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:25,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:25,001 INFO L82 PathProgramCache]: Analyzing trace with hash 509652639, now seen corresponding path program 1 times [2020-07-21 01:18:25,002 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:25,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873936342] [2020-07-21 01:18:25,002 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 [2020-07-21 01:18:25,087 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:18:25,087 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:25,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:25,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:25,137 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:25,137 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:25,219 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 33 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:25,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873936342] [2020-07-21 01:18:25,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:25,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 01:18:25,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101871179] [2020-07-21 01:18:25,224 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:18:25,225 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:25,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:18:25,225 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:25,225 INFO L87 Difference]: Start difference. First operand 1801 states and 2419 transitions. Second operand 8 states. [2020-07-21 01:18:27,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:27,067 INFO L93 Difference]: Finished difference Result 6067 states and 8223 transitions. [2020-07-21 01:18:27,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:18:27,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 149 [2020-07-21 01:18:27,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:27,097 INFO L225 Difference]: With dead ends: 6067 [2020-07-21 01:18:27,097 INFO L226 Difference]: Without dead ends: 4332 [2020-07-21 01:18:27,102 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 305 GetRequests, 295 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:27,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4332 states. [2020-07-21 01:18:27,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4332 to 3447. [2020-07-21 01:18:27,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3447 states. [2020-07-21 01:18:27,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3447 states to 3447 states and 4502 transitions. [2020-07-21 01:18:27,233 INFO L78 Accepts]: Start accepts. Automaton has 3447 states and 4502 transitions. Word has length 149 [2020-07-21 01:18:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:27,234 INFO L479 AbstractCegarLoop]: Abstraction has 3447 states and 4502 transitions. [2020-07-21 01:18:27,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:18:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 3447 states and 4502 transitions. [2020-07-21 01:18:27,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-07-21 01:18:27,246 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:27,246 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 01:18:27,459 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:27,460 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:27,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:27,460 INFO L82 PathProgramCache]: Analyzing trace with hash 941995943, now seen corresponding path program 1 times [2020-07-21 01:18:27,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:27,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2040900494] [2020-07-21 01:18:27,461 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 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:27,588 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:18:27,589 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:27,591 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 01:18:27,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:27,636 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:27,636 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:27,705 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:18:27,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2040900494] [2020-07-21 01:18:27,706 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:27,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:27,709 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910087997] [2020-07-21 01:18:27,710 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:27,710 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:27,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:27,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:27,711 INFO L87 Difference]: Start difference. First operand 3447 states and 4502 transitions. Second operand 7 states. [2020-07-21 01:18:28,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:28,508 INFO L93 Difference]: Finished difference Result 6441 states and 8411 transitions. [2020-07-21 01:18:28,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:18:28,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 153 [2020-07-21 01:18:28,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:28,528 INFO L225 Difference]: With dead ends: 6441 [2020-07-21 01:18:28,529 INFO L226 Difference]: Without dead ends: 3872 [2020-07-21 01:18:28,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 301 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:18:28,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3872 states. [2020-07-21 01:18:28,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3872 to 3451. [2020-07-21 01:18:28,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3451 states. [2020-07-21 01:18:28,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3451 states to 3451 states and 4328 transitions. [2020-07-21 01:18:28,728 INFO L78 Accepts]: Start accepts. Automaton has 3451 states and 4328 transitions. Word has length 153 [2020-07-21 01:18:28,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:28,728 INFO L479 AbstractCegarLoop]: Abstraction has 3451 states and 4328 transitions. [2020-07-21 01:18:28,728 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:28,728 INFO L276 IsEmpty]: Start isEmpty. Operand 3451 states and 4328 transitions. [2020-07-21 01:18:28,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-07-21 01:18:28,738 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:28,738 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:28,951 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:28,952 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:28,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:28,953 INFO L82 PathProgramCache]: Analyzing trace with hash -840958220, now seen corresponding path program 1 times [2020-07-21 01:18:28,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:28,954 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771796768] [2020-07-21 01:18:28,956 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 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:29,039 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:18:29,039 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:29,041 INFO L263 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:29,044 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:29,113 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 54 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:18:29,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:29,330 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:18:29,370 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:29,373 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:29,373 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:29,377 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:29,378 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:29,379 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 01:18:29,380 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:29,498 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 50 proven. 15 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-07-21 01:18:29,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1771796768] [2020-07-21 01:18:29,498 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:29,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:29,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [845792047] [2020-07-21 01:18:29,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:29,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:29,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:29,506 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:29,506 INFO L87 Difference]: Start difference. First operand 3451 states and 4328 transitions. Second operand 7 states. [2020-07-21 01:18:30,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:30,916 INFO L93 Difference]: Finished difference Result 5797 states and 7163 transitions. [2020-07-21 01:18:30,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:18:30,918 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 165 [2020-07-21 01:18:30,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:30,933 INFO L225 Difference]: With dead ends: 5797 [2020-07-21 01:18:30,933 INFO L226 Difference]: Without dead ends: 3085 [2020-07-21 01:18:30,940 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 326 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:18:30,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3085 states. [2020-07-21 01:18:31,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3085 to 2615. [2020-07-21 01:18:31,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2615 states. [2020-07-21 01:18:31,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2615 states to 2615 states and 3087 transitions. [2020-07-21 01:18:31,012 INFO L78 Accepts]: Start accepts. Automaton has 2615 states and 3087 transitions. Word has length 165 [2020-07-21 01:18:31,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:31,013 INFO L479 AbstractCegarLoop]: Abstraction has 2615 states and 3087 transitions. [2020-07-21 01:18:31,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:31,013 INFO L276 IsEmpty]: Start isEmpty. Operand 2615 states and 3087 transitions. [2020-07-21 01:18:31,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-07-21 01:18:31,020 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:31,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:31,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:31,235 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:31,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:31,236 INFO L82 PathProgramCache]: Analyzing trace with hash -1226002440, now seen corresponding path program 1 times [2020-07-21 01:18:31,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:31,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1023362664] [2020-07-21 01:18:31,236 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 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:31,347 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:31,347 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:31,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:31,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:31,419 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 97 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:18:31,419 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:31,624 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:18:31,673 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:31,674 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:31,677 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,679 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:31,680 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:31,796 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 84 proven. 15 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-07-21 01:18:31,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1023362664] [2020-07-21 01:18:31,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:31,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:31,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886101246] [2020-07-21 01:18:31,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:31,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:31,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:31,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:31,799 INFO L87 Difference]: Start difference. First operand 2615 states and 3087 transitions. Second operand 7 states. [2020-07-21 01:18:32,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:32,923 INFO L93 Difference]: Finished difference Result 6423 states and 7719 transitions. [2020-07-21 01:18:32,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:32,924 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 195 [2020-07-21 01:18:32,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:32,940 INFO L225 Difference]: With dead ends: 6423 [2020-07-21 01:18:32,940 INFO L226 Difference]: Without dead ends: 3590 [2020-07-21 01:18:32,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 388 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:32,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3590 states. [2020-07-21 01:18:33,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3590 to 3306. [2020-07-21 01:18:33,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3306 states. [2020-07-21 01:18:33,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3306 states to 3306 states and 3772 transitions. [2020-07-21 01:18:33,035 INFO L78 Accepts]: Start accepts. Automaton has 3306 states and 3772 transitions. Word has length 195 [2020-07-21 01:18:33,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:33,036 INFO L479 AbstractCegarLoop]: Abstraction has 3306 states and 3772 transitions. [2020-07-21 01:18:33,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:33,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3306 states and 3772 transitions. [2020-07-21 01:18:33,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 01:18:33,046 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:33,047 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:18:33,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:33,261 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:33,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1915292355, now seen corresponding path program 1 times [2020-07-21 01:18:33,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:33,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2119456945] [2020-07-21 01:18:33,262 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 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:33,376 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:33,376 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:33,378 INFO L263 TraceCheckSpWp]: Trace formula consists of 485 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:18:33,382 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:33,407 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:18:33,407 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:33,484 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 118 proven. 6 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 01:18:33,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:33,694 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:18:33,745 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:33,746 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,747 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,748 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,749 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 2, 2, 1] term [2020-07-21 01:18:33,749 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:33,751 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:18:33,751 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:33,754 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:33,754 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,755 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,756 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,759 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:33,760 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,787 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:33,840 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:33,842 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:34,013 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 103 proven. 42 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-21 01:18:34,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2119456945] [2020-07-21 01:18:34,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:34,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:18:34,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859093313] [2020-07-21 01:18:34,016 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:18:34,016 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:34,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:18:34,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:18:34,017 INFO L87 Difference]: Start difference. First operand 3306 states and 3772 transitions. Second operand 8 states. [2020-07-21 01:18:35,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:35,057 INFO L93 Difference]: Finished difference Result 5764 states and 6605 transitions. [2020-07-21 01:18:35,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:18:35,058 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 212 [2020-07-21 01:18:35,058 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:35,073 INFO L225 Difference]: With dead ends: 5764 [2020-07-21 01:18:35,073 INFO L226 Difference]: Without dead ends: 3463 [2020-07-21 01:18:35,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 429 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:18:35,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3463 states. [2020-07-21 01:18:35,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3463 to 3167. [2020-07-21 01:18:35,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3167 states. [2020-07-21 01:18:35,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3167 states to 3167 states and 3585 transitions. [2020-07-21 01:18:35,174 INFO L78 Accepts]: Start accepts. Automaton has 3167 states and 3585 transitions. Word has length 212 [2020-07-21 01:18:35,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:35,175 INFO L479 AbstractCegarLoop]: Abstraction has 3167 states and 3585 transitions. [2020-07-21 01:18:35,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:18:35,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3167 states and 3585 transitions. [2020-07-21 01:18:35,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-07-21 01:18:35,185 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:35,185 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:18:35,398 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:35,399 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:35,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:35,400 INFO L82 PathProgramCache]: Analyzing trace with hash -1122904089, now seen corresponding path program 1 times [2020-07-21 01:18:35,400 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:35,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1067107410] [2020-07-21 01:18:35,401 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 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:35,554 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:35,554 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:35,557 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:35,563 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:35,636 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 193 proven. 2 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 01:18:35,637 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:35,745 INFO L134 CoverageAnalysis]: Checked inductivity of 241 backedges. 162 proven. 33 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2020-07-21 01:18:35,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1067107410] [2020-07-21 01:18:35,747 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:35,747 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:35,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287409812] [2020-07-21 01:18:35,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:35,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:35,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:35,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:35,749 INFO L87 Difference]: Start difference. First operand 3167 states and 3585 transitions. Second operand 7 states. [2020-07-21 01:18:36,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:36,889 INFO L93 Difference]: Finished difference Result 6683 states and 7566 transitions. [2020-07-21 01:18:36,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:18:36,896 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-07-21 01:18:36,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:36,909 INFO L225 Difference]: With dead ends: 6683 [2020-07-21 01:18:36,909 INFO L226 Difference]: Without dead ends: 3439 [2020-07-21 01:18:36,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 500 GetRequests, 489 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:36,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3439 states. [2020-07-21 01:18:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3439 to 2754. [2020-07-21 01:18:36,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2754 states. [2020-07-21 01:18:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2754 states to 2754 states and 3023 transitions. [2020-07-21 01:18:36,980 INFO L78 Accepts]: Start accepts. Automaton has 2754 states and 3023 transitions. Word has length 246 [2020-07-21 01:18:36,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:36,981 INFO L479 AbstractCegarLoop]: Abstraction has 2754 states and 3023 transitions. [2020-07-21 01:18:36,981 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:36,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2754 states and 3023 transitions. [2020-07-21 01:18:36,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2020-07-21 01:18:36,990 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:36,990 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:18:37,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:37,204 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:37,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:37,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1100042581, now seen corresponding path program 1 times [2020-07-21 01:18:37,205 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:37,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [119902995] [2020-07-21 01:18:37,206 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:37,326 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:18:37,326 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:37,329 INFO L263 TraceCheckSpWp]: Trace formula consists of 463 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:37,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:37,414 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 215 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-21 01:18:37,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:37,605 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:18:37,647 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:37,648 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:18:37,648 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:37,649 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:37,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:37,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:37,829 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 181 proven. 15 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2020-07-21 01:18:37,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [119902995] [2020-07-21 01:18:37,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:37,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:37,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204848004] [2020-07-21 01:18:37,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:37,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:37,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:37,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:37,831 INFO L87 Difference]: Start difference. First operand 2754 states and 3023 transitions. Second operand 7 states. [2020-07-21 01:18:38,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:38,997 INFO L93 Difference]: Finished difference Result 4912 states and 5401 transitions. [2020-07-21 01:18:38,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:38,999 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 273 [2020-07-21 01:18:38,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:39,011 INFO L225 Difference]: With dead ends: 4912 [2020-07-21 01:18:39,011 INFO L226 Difference]: Without dead ends: 3173 [2020-07-21 01:18:39,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 555 GetRequests, 544 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3173 states. [2020-07-21 01:18:39,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3173 to 3034. [2020-07-21 01:18:39,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3034 states. [2020-07-21 01:18:39,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3034 states to 3034 states and 3336 transitions. [2020-07-21 01:18:39,078 INFO L78 Accepts]: Start accepts. Automaton has 3034 states and 3336 transitions. Word has length 273 [2020-07-21 01:18:39,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:39,078 INFO L479 AbstractCegarLoop]: Abstraction has 3034 states and 3336 transitions. [2020-07-21 01:18:39,078 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:39,078 INFO L276 IsEmpty]: Start isEmpty. Operand 3034 states and 3336 transitions. [2020-07-21 01:18:39,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-21 01:18:39,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:39,088 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:18:39,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:39,303 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:39,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:39,303 INFO L82 PathProgramCache]: Analyzing trace with hash -512887194, now seen corresponding path program 1 times [2020-07-21 01:18:39,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:39,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1037559365] [2020-07-21 01:18:39,304 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 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:39,474 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:39,474 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:39,476 INFO L263 TraceCheckSpWp]: Trace formula consists of 648 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:18:39,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:39,511 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 2, 1] term [2020-07-21 01:18:39,511 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:18:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:39,569 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:39,667 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 3 conjuncts [2020-07-21 01:18:39,668 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:39,706 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:39,940 INFO L134 CoverageAnalysis]: Checked inductivity of 350 backedges. 237 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:39,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1037559365] [2020-07-21 01:18:39,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:39,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:39,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227463289] [2020-07-21 01:18:39,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:39,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:39,943 INFO L87 Difference]: Start difference. First operand 3034 states and 3336 transitions. Second operand 7 states. [2020-07-21 01:18:40,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:40,929 INFO L93 Difference]: Finished difference Result 4944 states and 5463 transitions. [2020-07-21 01:18:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:18:40,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-07-21 01:18:40,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:40,940 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 01:18:40,940 INFO L226 Difference]: Without dead ends: 3062 [2020-07-21 01:18:40,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 577 GetRequests, 568 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:18:40,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3062 states. [2020-07-21 01:18:41,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3062 to 3040. [2020-07-21 01:18:41,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3040 states. [2020-07-21 01:18:41,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3040 states to 3040 states and 3323 transitions. [2020-07-21 01:18:41,009 INFO L78 Accepts]: Start accepts. Automaton has 3040 states and 3323 transitions. Word has length 286 [2020-07-21 01:18:41,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:41,010 INFO L479 AbstractCegarLoop]: Abstraction has 3040 states and 3323 transitions. [2020-07-21 01:18:41,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:41,010 INFO L276 IsEmpty]: Start isEmpty. Operand 3040 states and 3323 transitions. [2020-07-21 01:18:41,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-21 01:18:41,021 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:41,021 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:41,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:41,237 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:41,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:41,238 INFO L82 PathProgramCache]: Analyzing trace with hash 1168988174, now seen corresponding path program 1 times [2020-07-21 01:18:41,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:41,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [286022750] [2020-07-21 01:18:41,238 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 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:41,414 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:41,414 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:41,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 661 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:18:41,421 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:41,496 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:41,497 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:41,611 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:18:41,611 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:41,855 INFO L134 CoverageAnalysis]: Checked inductivity of 410 backedges. 297 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:41,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [286022750] [2020-07-21 01:18:41,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:41,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:18:41,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817940968] [2020-07-21 01:18:41,856 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:18:41,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:41,857 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:18:41,857 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:18:41,857 INFO L87 Difference]: Start difference. First operand 3040 states and 3323 transitions. Second operand 7 states. [2020-07-21 01:18:43,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:43,076 INFO L93 Difference]: Finished difference Result 6018 states and 6579 transitions. [2020-07-21 01:18:43,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:18:43,077 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 306 [2020-07-21 01:18:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:43,086 INFO L225 Difference]: With dead ends: 6018 [2020-07-21 01:18:43,086 INFO L226 Difference]: Without dead ends: 3044 [2020-07-21 01:18:43,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 621 GetRequests, 610 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:43,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3044 states. [2020-07-21 01:18:43,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3044 to 1950. [2020-07-21 01:18:43,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1950 states. [2020-07-21 01:18:43,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1950 states to 1950 states and 2055 transitions. [2020-07-21 01:18:43,140 INFO L78 Accepts]: Start accepts. Automaton has 1950 states and 2055 transitions. Word has length 306 [2020-07-21 01:18:43,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:43,141 INFO L479 AbstractCegarLoop]: Abstraction has 1950 states and 2055 transitions. [2020-07-21 01:18:43,141 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:18:43,141 INFO L276 IsEmpty]: Start isEmpty. Operand 1950 states and 2055 transitions. [2020-07-21 01:18:43,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2020-07-21 01:18:43,149 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:43,150 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:18:43,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:43,364 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:43,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:43,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1620224307, now seen corresponding path program 1 times [2020-07-21 01:18:43,365 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:43,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419437488] [2020-07-21 01:18:43,365 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:43,622 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:18:43,623 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:43,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 811 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:43,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:43,748 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 193 proven. 0 refuted. 0 times theorem prover too weak. 294 trivial. 0 not checked. [2020-07-21 01:18:43,749 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:43,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419437488] [2020-07-21 01:18:43,749 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:43,749 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:18:43,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [718583681] [2020-07-21 01:18:43,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:18:43,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:43,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:18:43,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:43,752 INFO L87 Difference]: Start difference. First operand 1950 states and 2055 transitions. Second operand 3 states. [2020-07-21 01:18:44,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:44,275 INFO L93 Difference]: Finished difference Result 2087 states and 2192 transitions. [2020-07-21 01:18:44,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:18:44,276 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 315 [2020-07-21 01:18:44,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:44,282 INFO L225 Difference]: With dead ends: 2087 [2020-07-21 01:18:44,282 INFO L226 Difference]: Without dead ends: 1948 [2020-07-21 01:18:44,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 313 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:44,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1948 states. [2020-07-21 01:18:44,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1948 to 1948. [2020-07-21 01:18:44,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1948 states. [2020-07-21 01:18:44,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1948 states to 1948 states and 2052 transitions. [2020-07-21 01:18:44,321 INFO L78 Accepts]: Start accepts. Automaton has 1948 states and 2052 transitions. Word has length 315 [2020-07-21 01:18:44,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:44,321 INFO L479 AbstractCegarLoop]: Abstraction has 1948 states and 2052 transitions. [2020-07-21 01:18:44,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:18:44,322 INFO L276 IsEmpty]: Start isEmpty. Operand 1948 states and 2052 transitions. [2020-07-21 01:18:44,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 336 [2020-07-21 01:18:44,330 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:44,331 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:18:44,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:44,544 INFO L427 AbstractCegarLoop]: === Iteration 15 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:44,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:44,544 INFO L82 PathProgramCache]: Analyzing trace with hash 1006740059, now seen corresponding path program 1 times [2020-07-21 01:18:44,545 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:44,545 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879315846] [2020-07-21 01:18:44,545 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 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:44,767 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:18:44,768 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:44,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 735 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 01:18:44,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:44,831 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 01:18:44,831 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:18:44,992 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 434 proven. 6 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:44,993 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:18:45,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:45,110 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:45,111 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:45,111 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:45,115 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:45,143 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:18:45,205 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:45,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:18:45,460 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 407 proven. 33 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:18:45,461 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879315846] [2020-07-21 01:18:45,461 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:18:45,461 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 01:18:45,461 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279676715] [2020-07-21 01:18:45,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:18:45,462 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:45,463 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:18:45,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:18:45,463 INFO L87 Difference]: Start difference. First operand 1948 states and 2052 transitions. Second operand 12 states. [2020-07-21 01:18:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:47,820 INFO L93 Difference]: Finished difference Result 4140 states and 4417 transitions. [2020-07-21 01:18:47,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 01:18:47,821 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 335 [2020-07-21 01:18:47,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:47,827 INFO L225 Difference]: With dead ends: 4140 [2020-07-21 01:18:47,827 INFO L226 Difference]: Without dead ends: 2258 [2020-07-21 01:18:47,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 698 GetRequests, 672 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 125 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=201, Invalid=501, Unknown=0, NotChecked=0, Total=702 [2020-07-21 01:18:47,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2258 states. [2020-07-21 01:18:47,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2258 to 2081. [2020-07-21 01:18:47,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2081 states. [2020-07-21 01:18:47,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2081 states to 2081 states and 2183 transitions. [2020-07-21 01:18:47,877 INFO L78 Accepts]: Start accepts. Automaton has 2081 states and 2183 transitions. Word has length 335 [2020-07-21 01:18:47,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:47,877 INFO L479 AbstractCegarLoop]: Abstraction has 2081 states and 2183 transitions. [2020-07-21 01:18:47,878 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:18:47,878 INFO L276 IsEmpty]: Start isEmpty. Operand 2081 states and 2183 transitions. [2020-07-21 01:18:47,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 356 [2020-07-21 01:18:47,888 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:18:47,888 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 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] [2020-07-21 01:18:48,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:48,103 INFO L427 AbstractCegarLoop]: === Iteration 16 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:18:48,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:18:48,104 INFO L82 PathProgramCache]: Analyzing trace with hash 335958451, now seen corresponding path program 1 times [2020-07-21 01:18:48,104 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:18:48,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192539706] [2020-07-21 01:18:48,104 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:48,344 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:18:48,344 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:18:48,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 849 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:18:48,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:18:48,449 INFO L134 CoverageAnalysis]: Checked inductivity of 627 backedges. 233 proven. 0 refuted. 0 times theorem prover too weak. 394 trivial. 0 not checked. [2020-07-21 01:18:48,450 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:18:48,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192539706] [2020-07-21 01:18:48,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:18:48,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:18:48,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008501247] [2020-07-21 01:18:48,451 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:18:48,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:18:48,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:18:48,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:48,452 INFO L87 Difference]: Start difference. First operand 2081 states and 2183 transitions. Second operand 3 states. [2020-07-21 01:18:49,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:18:49,018 INFO L93 Difference]: Finished difference Result 2081 states and 2183 transitions. [2020-07-21 01:18:49,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:18:49,019 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 355 [2020-07-21 01:18:49,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:18:49,020 INFO L225 Difference]: With dead ends: 2081 [2020-07-21 01:18:49,020 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:18:49,027 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 353 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:18:49,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:18:49,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:18:49,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:18:49,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:18:49,029 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 355 [2020-07-21 01:18:49,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:18:49,030 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:18:49,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:18:49,030 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:18:49,030 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:18:49,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:18:49,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:18:50,222 WARN L193 SmtUtils]: Spent 384.00 ms on a formula simplification. DAG size of input: 280 DAG size of output: 258 [2020-07-21 01:18:50,547 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 282 DAG size of output: 249 [2020-07-21 01:18:53,396 WARN L193 SmtUtils]: Spent 2.71 s on a formula simplification. DAG size of input: 311 DAG size of output: 111 [2020-07-21 01:18:54,754 WARN L193 SmtUtils]: Spent 1.32 s on a formula simplification. DAG size of input: 268 DAG size of output: 73 [2020-07-21 01:18:56,053 WARN L193 SmtUtils]: Spent 1.30 s on a formula simplification. DAG size of input: 259 DAG size of output: 73 [2020-07-21 01:18:56,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:18:56,058 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:18:56,058 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:18:56,058 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:18:56,058 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:18:56,059 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,059 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,059 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,059 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,059 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,059 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,059 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:18:56,060 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:18:56,061 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 515) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:18:56,062 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:18:56,063 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,064 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:18:56,065 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,066 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:18:56,067 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,068 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,069 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,070 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:18:56,071 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse17 (not (< |old(~a16~0)| 6))) (.cse7 (not (<= |old(~a8~0)| 13))) (.cse24 (= 1 |old(~a17~0)|)) (.cse29 (= 1 |old(~a20~0)|))) (let ((.cse28 (= 8 ~a12~0)) (.cse10 (= 1 |old(~a21~0)|)) (.cse11 (not .cse29)) (.cse8 (not .cse24)) (.cse23 (and (or .cse17 (not (< |old(~a8~0)| 15))) .cse7))) (let ((.cse0 (not (<= 15 |old(~a8~0)|))) (.cse2 (<= 15 ~a8~0)) (.cse20 (< 4 ~a16~0)) (.cse18 (not (< 4 |old(~a16~0)|))) (.cse1 (let ((.cse30 (not (= 1 |old(~a7~0)|)))) (and (or .cse30 .cse17) (or .cse30 .cse23)))) (.cse3 (and (or .cse11 .cse8) (or .cse29 .cse24))) (.cse14 (= 1 ~a7~0)) (.cse5 (= ~a17~0 |old(~a17~0)|)) (.cse6 (<= |old(~a16~0)| ~a16~0)) (.cse15 (= 1 ~a21~0)) (.cse27 (not (<= |old(~a16~0)| 5))) (.cse19 (= ~a7~0 |old(~a7~0)|)) (.cse12 (<= ~a8~0 |old(~a8~0)|)) (.cse13 (<= ~a16~0 |old(~a16~0)|)) (.cse16 (= ~a20~0 |old(~a20~0)|)) (.cse21 (= ~a21~0 |old(~a21~0)|)) (.cse25 (not (<= |old(~a7~0)| 0))) (.cse4 (not .cse10)) (.cse26 (not .cse28)) (.cse9 (not (<= |old(~a16~0)| 4)))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4) (or (and .cse5 .cse6) .cse7 .cse8 .cse9 .cse10) (or .cse11 .cse1 (and .cse12 .cse13 .cse14 .cse15 .cse16) .cse4) (or .cse11 .cse17 .cse7 .cse18 .cse8 (and .cse12 .cse19 .cse5 (<= ~a16~0 5) .cse20 .cse16 .cse21)) (or .cse11 (and .cse12 .cse13 .cse19 .cse5 .cse6 .cse16 .cse21) (let ((.cse22 (and (or .cse8 .cse4) (or .cse24 .cse10)))) (and (or .cse22 .cse23 (not (<= 6 |old(~a16~0)|))) (or .cse22 .cse7 .cse9)))) (or .cse0 .cse25 .cse4 (and .cse13 .cse12 .cse19 .cse5 .cse6 .cse2 .cse15 .cse16) .cse26) (or .cse1 (and .cse12 .cse13 .cse14 .cse15 .cse20 .cse16) .cse27 .cse18 .cse4) (or .cse1 (not (<= 14 |old(~a8~0)|)) .cse3 (and .cse12 .cse13 .cse14 .cse5 .cse6 (<= 14 ~a8~0) .cse15 .cse16) .cse4) (or .cse27 (and .cse19 (or (and .cse12 .cse13 (= 1 ~a17~0)) (and .cse12 .cse13 (<= ~a7~0 0) .cse28)) .cse16 .cse21) (and (or .cse25 .cse4 .cse26) (or .cse7 .cse8 .cse9))))))) [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:18:56,072 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:18:56,073 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:18:56,074 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:18:56,075 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:18:56,076 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:18:56,077 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 01:18:56,077 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:18:56,078 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:18:56,078 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (and (<= ~a8~0 |old(~a8~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= 15 ~a8~0) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 5 ~a16~0)) (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (< |old(~a16~0)| 6)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:18:56,078 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:18:56,078 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13)) (.cse1 (= 1 ~a17~0))) (let ((.cse2 (<= ~a16~0 4)) (.cse4 (not .cse1)) (.cse3 (let ((.cse10 (= 1 ~a7~0))) (or (and (< ~a16~0 6) .cse10) (and .cse0 .cse10)))) (.cse9 (<= ~a7~0 0)) (.cse5 (= 1 ~a21~0)) (.cse6 (<= ~a16~0 5)) (.cse8 (= 1 ~a20~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 (<= 14 ~a8~0) .cse5) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and .cse3 .cse6 .cse5 (< 4 ~a16~0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a20~0)|)) (and (let ((.cse7 (or (and .cse4 (not .cse5)) (and .cse1 .cse5)))) (or (and .cse7 .cse0 (<= 6 ~a16~0)) (and .cse7 .cse0 .cse2))) .cse8) (and .cse3 .cse5 .cse8) (and .cse9 (<= 15 ~a8~0) .cse5) (not (< |old(~a16~0)| 6)) (and .cse9 .cse6 .cse5) (and .cse0 .cse1 .cse6 .cse8) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:18:56,078 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:18:56,078 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:18:56,079 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse0 (<= ~a8~0 13)) (.cse1 (= 1 ~a17~0))) (let ((.cse2 (<= ~a16~0 4)) (.cse4 (not .cse1)) (.cse3 (let ((.cse10 (= 1 ~a7~0))) (or (and (< ~a16~0 6) .cse10) (and .cse0 .cse10)))) (.cse9 (<= ~a7~0 0)) (.cse5 (= 1 ~a21~0)) (.cse6 (<= ~a16~0 5)) (.cse8 (= 1 ~a20~0))) (or (and .cse0 .cse1 .cse2) (and .cse3 .cse4 (<= 14 ~a8~0) .cse5) (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (and .cse3 .cse6 .cse5 (< 4 ~a16~0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a20~0)|)) (and (let ((.cse7 (or (and .cse4 (not .cse5)) (and .cse1 .cse5)))) (or (and .cse7 .cse0 (<= 6 ~a16~0)) (and .cse7 .cse0 .cse2))) .cse8) (and .cse3 .cse5 .cse8) (and .cse9 (<= 15 ~a8~0) .cse5) (not (< |old(~a16~0)| 6)) (and .cse9 .cse6 .cse5) (and .cse0 .cse1 .cse6 .cse8) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))))) [2020-07-21 01:18:56,079 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:18:56,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:18:56 BoogieIcfgContainer [2020-07-21 01:18:56,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:18:56,121 INFO L168 Benchmark]: Toolchain (without parser) took 48868.63 ms. Allocated memory was 137.4 MB in the beginning and 792.7 MB in the end (delta: 655.4 MB). Free memory was 100.4 MB in the beginning and 241.2 MB in the end (delta: -140.8 MB). Peak memory consumption was 679.8 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:56,126 INFO L168 Benchmark]: CDTParser took 0.56 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 01:18:56,126 INFO L168 Benchmark]: CACSL2BoogieTranslator took 701.82 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.0 MB in the beginning and 169.8 MB in the end (delta: -69.8 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:56,127 INFO L168 Benchmark]: Boogie Preprocessor took 123.24 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 164.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:56,127 INFO L168 Benchmark]: RCFGBuilder took 1439.49 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 164.7 MB in the beginning and 178.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:56,130 INFO L168 Benchmark]: TraceAbstraction took 46597.45 ms. Allocated memory was 234.9 MB in the beginning and 792.7 MB in the end (delta: 557.8 MB). Free memory was 177.3 MB in the beginning and 241.2 MB in the end (delta: -63.9 MB). Peak memory consumption was 659.2 MB. Max. memory is 7.1 GB. [2020-07-21 01:18:56,133 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.56 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 701.82 ms. Allocated memory was 137.4 MB in the beginning and 203.9 MB in the end (delta: 66.6 MB). Free memory was 100.0 MB in the beginning and 169.8 MB in the end (delta: -69.8 MB). Peak memory consumption was 34.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.24 ms. Allocated memory is still 203.9 MB. Free memory was 169.8 MB in the beginning and 164.7 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1439.49 ms. Allocated memory was 203.9 MB in the beginning and 234.9 MB in the end (delta: 30.9 MB). Free memory was 164.7 MB in the beginning and 178.8 MB in the end (delta: -14.1 MB). Peak memory consumption was 84.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 46597.45 ms. Allocated memory was 234.9 MB in the beginning and 792.7 MB in the end (delta: 557.8 MB). Free memory was 177.3 MB in the beginning and 241.2 MB in the end (delta: -63.9 MB). Peak memory consumption was 659.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 515]: 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: ((((((((((((((((a8 <= 13 && 1 == a17) && a16 <= 4) || (((((a16 < 6 && 1 == a7) || (a8 <= 13 && 1 == a7)) && !(1 == a17)) && 14 <= a8) && 1 == a21)) || !(15 == \old(a8))) || !(\old(a7) <= 0)) || (((((a16 < 6 && 1 == a7) || (a8 <= 13 && 1 == a7)) && a16 <= 5) && 1 == a21) && 4 < a16)) || !(4 < \old(a16))) || !(1 == \old(a17))) || !(1 == \old(a20))) || ((((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && 6 <= a16) || ((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && a16 <= 4)) && 1 == a20)) || ((((a16 < 6 && 1 == a7) || (a8 <= 13 && 1 == a7)) && 1 == a21) && 1 == a20)) || ((a7 <= 0 && 15 <= a8) && 1 == a21)) || !(\old(a16) < 6)) || ((a7 <= 0 && a16 <= 5) && 1 == a21)) || (((a8 <= 13 && 1 == a17) && a16 <= 5) && 1 == a20)) || !(1 == \old(a21))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 39.6s, OverallIterations: 16, TraceHistogramMax: 7, AutomataDifference: 23.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 614 SDtfs, 8083 SDslu, 901 SDs, 0 SdLazy, 16747 SolverSat, 1902 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 14.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6213 GetRequests, 6022 SyntacticMatches, 12 SemanticMatches, 179 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 747 ImplicationChecksByTransitivity, 6.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3451occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 4537 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 214 PreInvPairs, 260 NumberOfFragments, 1022 HoareAnnotationTreeSize, 214 FomulaSimplifications, 29394 FormulaSimplificationTreeSizeReduction, 1.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 48201 FormulaSimplificationTreeSizeReductionInter, 5.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 8.4s InterpolantComputationTime, 3509 NumberOfCodeBlocks, 2306 NumberOfCodeBlocksAsserted, 39 NumberOfCheckSat, 6071 ConstructedInterpolants, 0 QuantifiedInterpolants, 5603550 SizeOfPredicates, 67 NumberOfNonLiveVariables, 7659 ConjunctsInSsa, 242 ConjunctsInUnsatCore, 28 InterpolantComputations, 4 PerfectInterpolantSequences, 5513/5710 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...