/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/Problem10_label44.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:30:05,217 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:30:05,219 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:30:05,231 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 01:30:05,241 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:30:05,242 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:30:05,243 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:30:05,244 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:30:05,245 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:30:05,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:30:05,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:30:05,249 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:30:05,251 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:30:05,252 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:30:05,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:30:05,254 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:30:05,257 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:30:05,264 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:30:05,265 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:30:05,266 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:30:05,267 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 01:30:05,281 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:30:05,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:30:05,283 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:30:05,283 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:30:05,283 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:30:05,284 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:30:05,284 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:30:05,284 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:30:05,284 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:30:05,284 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:30:05,285 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:30:05,285 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:30:05,285 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:30:05,285 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:30:05,285 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:30:05,285 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:30:05,286 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:30:05,286 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:30:05,286 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:30:05,286 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:30:05,286 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:30:05,287 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:30:05,287 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:30:05,287 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:30:05,287 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:30:05,287 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:30:05,288 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:05,288 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:30:05,288 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:30:05,288 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 01:30:05,595 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:30:05,609 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:30:05,612 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:30:05,613 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:30:05,614 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:30:05,615 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-07-21 01:30:05,676 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3117b19c9/f430c4a67bea4f8f8fac13e0a7a97457/FLAG5fd4ff92e [2020-07-21 01:30:06,236 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:30:06,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label44.c [2020-07-21 01:30:06,257 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3117b19c9/f430c4a67bea4f8f8fac13e0a7a97457/FLAG5fd4ff92e [2020-07-21 01:30:06,465 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3117b19c9/f430c4a67bea4f8f8fac13e0a7a97457 [2020-07-21 01:30:06,476 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:30:06,480 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:30:06,481 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:30:06,481 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:30:06,485 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:30:06,486 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:30:06" (1/1) ... [2020-07-21 01:30:06,489 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5046c280 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:06, skipping insertion in model container [2020-07-21 01:30:06,490 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:30:06" (1/1) ... [2020-07-21 01:30:06,498 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:30:06,544 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:30:07,003 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:30:07,008 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:30:07,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:30:07,236 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:30:07,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07 WrapperNode [2020-07-21 01:30:07,236 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:30:07,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:30:07,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:30:07,237 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:30:07,255 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (1/1) ... [2020-07-21 01:30:07,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (1/1) ... [2020-07-21 01:30:07,274 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (1/1) ... [2020-07-21 01:30:07,275 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (1/1) ... [2020-07-21 01:30:07,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (1/1) ... [2020-07-21 01:30:07,345 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (1/1) ... [2020-07-21 01:30:07,358 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (1/1) ... [2020-07-21 01:30:07,370 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:30:07,371 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:30:07,371 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:30:07,372 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:30:07,373 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (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 01:30:07,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:30:07,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:30:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:30:07,450 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:30:07,450 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:30:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:30:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:30:07,451 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:30:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:30:07,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:30:07,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:30:08,746 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:30:08,746 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:30:08,752 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:30:08 BoogieIcfgContainer [2020-07-21 01:30:08,752 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:30:08,754 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:30:08,754 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:30:08,757 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:30:08,758 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:30:06" (1/3) ... [2020-07-21 01:30:08,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8330b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:30:08, skipping insertion in model container [2020-07-21 01:30:08,759 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:30:07" (2/3) ... [2020-07-21 01:30:08,759 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b8330b8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:30:08, skipping insertion in model container [2020-07-21 01:30:08,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:30:08" (3/3) ... [2020-07-21 01:30:08,762 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label44.c [2020-07-21 01:30:08,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:30:08,783 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:30:08,802 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:30:08,832 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:30:08,832 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:30:08,833 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:30:08,833 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:30:08,833 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:30:08,834 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:30:08,834 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:30:08,834 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:30:08,860 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 01:30:08,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-07-21 01:30:08,872 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:08,873 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] [2020-07-21 01:30:08,873 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:08,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:08,882 INFO L82 PathProgramCache]: Analyzing trace with hash 745509942, now seen corresponding path program 1 times [2020-07-21 01:30:08,892 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:08,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864192546] [2020-07-21 01:30:08,894 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 01:30:09,051 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:30:09,051 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:09,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 163 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:30:09,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:09,133 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 01:30:09,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:30:09,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [864192546] [2020-07-21 01:30:09,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:30:09,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:30:09,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238772148] [2020-07-21 01:30:09,142 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:30:09,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:09,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:30:09,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:30:09,160 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 01:30:10,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:10,266 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 01:30:10,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:30:10,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 63 [2020-07-21 01:30:10,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:10,288 INFO L225 Difference]: With dead ends: 571 [2020-07-21 01:30:10,289 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 01:30:10,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 61 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 01:30:10,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 01:30:10,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 01:30:10,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 01:30:10,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 391 transitions. [2020-07-21 01:30:10,421 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 391 transitions. Word has length 63 [2020-07-21 01:30:10,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:10,422 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 391 transitions. [2020-07-21 01:30:10,423 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:30:10,423 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 391 transitions. [2020-07-21 01:30:10,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 01:30:10,433 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:10,434 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:30:10,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:10,648 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:10,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:10,649 INFO L82 PathProgramCache]: Analyzing trace with hash -825362990, now seen corresponding path program 1 times [2020-07-21 01:30:10,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:10,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518879763] [2020-07-21 01:30:10,650 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 01:30:10,751 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:30:10,752 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:10,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 01:30:10,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:10,817 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 53 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:30:10,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:30:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 01:30:10,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518879763] [2020-07-21 01:30:10,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:30:10,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2020-07-21 01:30:10,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940692791] [2020-07-21 01:30:10,934 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 01:30:10,935 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:10,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 01:30:10,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:30:10,935 INFO L87 Difference]: Start difference. First operand 294 states and 391 transitions. Second operand 4 states. [2020-07-21 01:30:11,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:11,684 INFO L93 Difference]: Finished difference Result 586 states and 788 transitions. [2020-07-21 01:30:11,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 01:30:11,685 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 133 [2020-07-21 01:30:11,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:11,696 INFO L225 Difference]: With dead ends: 586 [2020-07-21 01:30:11,697 INFO L226 Difference]: Without dead ends: 584 [2020-07-21 01:30:11,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 258 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:30:11,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2020-07-21 01:30:11,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2020-07-21 01:30:11,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-21 01:30:11,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 786 transitions. [2020-07-21 01:30:11,737 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 786 transitions. Word has length 133 [2020-07-21 01:30:11,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:11,738 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 786 transitions. [2020-07-21 01:30:11,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 01:30:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 786 transitions. [2020-07-21 01:30:11,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-07-21 01:30:11,741 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:11,742 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:30:11,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:11,955 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:11,956 INFO L82 PathProgramCache]: Analyzing trace with hash -1989249747, now seen corresponding path program 1 times [2020-07-21 01:30:11,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:11,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870550219] [2020-07-21 01:30:11,958 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 01:30:12,055 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:30:12,055 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:12,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 01:30:12,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:12,125 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:30:12,125 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:30:12,125 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870550219] [2020-07-21 01:30:12,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:30:12,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:30:12,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1905091697] [2020-07-21 01:30:12,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:30:12,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:12,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:30:12,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:30:12,128 INFO L87 Difference]: Start difference. First operand 584 states and 786 transitions. Second operand 5 states. [2020-07-21 01:30:13,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:13,131 INFO L93 Difference]: Finished difference Result 1321 states and 1762 transitions. [2020-07-21 01:30:13,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:30:13,132 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 136 [2020-07-21 01:30:13,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:13,140 INFO L225 Difference]: With dead ends: 1321 [2020-07-21 01:30:13,141 INFO L226 Difference]: Without dead ends: 743 [2020-07-21 01:30:13,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 132 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:30:13,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2020-07-21 01:30:13,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 596. [2020-07-21 01:30:13,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 596 states. [2020-07-21 01:30:13,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 596 states to 596 states and 794 transitions. [2020-07-21 01:30:13,197 INFO L78 Accepts]: Start accepts. Automaton has 596 states and 794 transitions. Word has length 136 [2020-07-21 01:30:13,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:13,198 INFO L479 AbstractCegarLoop]: Abstraction has 596 states and 794 transitions. [2020-07-21 01:30:13,198 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:30:13,199 INFO L276 IsEmpty]: Start isEmpty. Operand 596 states and 794 transitions. [2020-07-21 01:30:13,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-07-21 01:30:13,201 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:13,202 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:30:13,412 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:13,413 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:13,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:13,414 INFO L82 PathProgramCache]: Analyzing trace with hash -1901765607, now seen corresponding path program 1 times [2020-07-21 01:30:13,415 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:13,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080862825] [2020-07-21 01:30:13,416 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 01:30:13,521 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:30:13,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:13,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 238 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 01:30:13,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:13,579 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:30:13,581 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:30:33,767 WARN L193 SmtUtils]: Spent 20.15 s on a formula simplification that was a NOOP. DAG size: 39 [2020-07-21 01:30:33,827 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:30:34,071 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 39 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:30:34,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:30:34,118 INFO L501 QuantifierPusher]: Distributing 5 disjuncts over 2 conjuncts [2020-07-21 01:30:34,226 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:34,227 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:34,229 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:30:34,230 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:30:34,232 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:34,233 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:34,235 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:30:34,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:30:40,412 WARN L193 SmtUtils]: Spent 6.11 s on a formula simplification. DAG size of input: 37 DAG size of output: 20 [2020-07-21 01:30:40,413 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080862825] [2020-07-21 01:30:40,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:30:40,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-21 01:30:40,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503129037] [2020-07-21 01:30:40,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:30:40,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:40,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:30:40,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:30:40,416 INFO L87 Difference]: Start difference. First operand 596 states and 794 transitions. Second operand 6 states. [2020-07-21 01:30:41,202 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 31 [2020-07-21 01:30:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:50,520 INFO L93 Difference]: Finished difference Result 1539 states and 2219 transitions. [2020-07-21 01:30:50,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:30:50,522 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 142 [2020-07-21 01:30:50,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:50,532 INFO L225 Difference]: With dead ends: 1539 [2020-07-21 01:30:50,532 INFO L226 Difference]: Without dead ends: 1065 [2020-07-21 01:30:50,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 193 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 26.8s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:30:50,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1065 states. [2020-07-21 01:30:50,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1065 to 1049. [2020-07-21 01:30:50,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1049 states. [2020-07-21 01:30:50,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1049 states to 1049 states and 1465 transitions. [2020-07-21 01:30:50,612 INFO L78 Accepts]: Start accepts. Automaton has 1049 states and 1465 transitions. Word has length 142 [2020-07-21 01:30:50,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:50,613 INFO L479 AbstractCegarLoop]: Abstraction has 1049 states and 1465 transitions. [2020-07-21 01:30:50,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:30:50,613 INFO L276 IsEmpty]: Start isEmpty. Operand 1049 states and 1465 transitions. [2020-07-21 01:30:50,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2020-07-21 01:30:50,621 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:50,621 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 01:30:50,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:50,822 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:50,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:50,823 INFO L82 PathProgramCache]: Analyzing trace with hash -1171294982, now seen corresponding path program 1 times [2020-07-21 01:30:50,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:50,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1851400806] [2020-07-21 01:30:50,824 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 01:30:50,949 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:30:50,949 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:50,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 01:30:50,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:51,019 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:30:51,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:30:51,019 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1851400806] [2020-07-21 01:30:51,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:30:51,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 01:30:51,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519301060] [2020-07-21 01:30:51,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:30:51,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:51,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:30:51,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 01:30:51,022 INFO L87 Difference]: Start difference. First operand 1049 states and 1465 transitions. Second operand 5 states. [2020-07-21 01:30:52,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:52,888 INFO L93 Difference]: Finished difference Result 2442 states and 3670 transitions. [2020-07-21 01:30:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:30:52,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 185 [2020-07-21 01:30:52,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:52,908 INFO L225 Difference]: With dead ends: 2442 [2020-07-21 01:30:52,909 INFO L226 Difference]: Without dead ends: 1542 [2020-07-21 01:30:52,913 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:30:52,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1542 states. [2020-07-21 01:30:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1542 to 1506. [2020-07-21 01:30:52,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1506 states. [2020-07-21 01:30:52,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2009 transitions. [2020-07-21 01:30:52,999 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2009 transitions. Word has length 185 [2020-07-21 01:30:53,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:53,000 INFO L479 AbstractCegarLoop]: Abstraction has 1506 states and 2009 transitions. [2020-07-21 01:30:53,001 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:30:53,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2009 transitions. [2020-07-21 01:30:53,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-07-21 01:30:53,005 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:53,005 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 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] [2020-07-21 01:30:53,219 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:53,220 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:53,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:53,221 INFO L82 PathProgramCache]: Analyzing trace with hash -1905070339, now seen corresponding path program 1 times [2020-07-21 01:30:53,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:53,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1921150305] [2020-07-21 01:30:53,222 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 01:30:53,329 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:30:53,329 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:53,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:30:53,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:53,392 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:30:53,392 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:30:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:30:53,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1921150305] [2020-07-21 01:30:53,507 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:30:53,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:30:53,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [678642217] [2020-07-21 01:30:53,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:30:53,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:53,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:30:53,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:30:53,509 INFO L87 Difference]: Start difference. First operand 1506 states and 2009 transitions. Second operand 7 states. [2020-07-21 01:30:56,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:56,315 INFO L93 Difference]: Finished difference Result 3475 states and 4853 transitions. [2020-07-21 01:30:56,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:30:56,317 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 212 [2020-07-21 01:30:56,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:56,329 INFO L225 Difference]: With dead ends: 3475 [2020-07-21 01:30:56,330 INFO L226 Difference]: Without dead ends: 2118 [2020-07-21 01:30:56,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 422 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:30:56,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2118 states. [2020-07-21 01:30:56,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2118 to 1951. [2020-07-21 01:30:56,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1951 states. [2020-07-21 01:30:56,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1951 states to 1951 states and 2540 transitions. [2020-07-21 01:30:56,399 INFO L78 Accepts]: Start accepts. Automaton has 1951 states and 2540 transitions. Word has length 212 [2020-07-21 01:30:56,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:56,400 INFO L479 AbstractCegarLoop]: Abstraction has 1951 states and 2540 transitions. [2020-07-21 01:30:56,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:30:56,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1951 states and 2540 transitions. [2020-07-21 01:30:56,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-07-21 01:30:56,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:56,405 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 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] [2020-07-21 01:30:56,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:56,621 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:56,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:56,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1173404218, now seen corresponding path program 1 times [2020-07-21 01:30:56,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:56,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557655662] [2020-07-21 01:30:56,622 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 01:30:56,755 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:30:56,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:56,757 INFO L263 TraceCheckSpWp]: Trace formula consists of 329 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:30:56,760 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:56,839 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:30:56,839 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:30:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 182 backedges. 180 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:30:57,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [557655662] [2020-07-21 01:30:57,008 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:30:57,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:30:57,009 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438370100] [2020-07-21 01:30:57,010 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:30:57,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:30:57,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:30:57,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:30:57,012 INFO L87 Difference]: Start difference. First operand 1951 states and 2540 transitions. Second operand 7 states. [2020-07-21 01:30:59,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:30:59,292 INFO L93 Difference]: Finished difference Result 4496 states and 5943 transitions. [2020-07-21 01:30:59,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 01:30:59,293 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 215 [2020-07-21 01:30:59,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:30:59,305 INFO L225 Difference]: With dead ends: 4496 [2020-07-21 01:30:59,306 INFO L226 Difference]: Without dead ends: 2694 [2020-07-21 01:30:59,310 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 436 GetRequests, 425 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:30:59,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2694 states. [2020-07-21 01:30:59,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2694 to 2398. [2020-07-21 01:30:59,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2398 states. [2020-07-21 01:30:59,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2398 states to 2398 states and 2894 transitions. [2020-07-21 01:30:59,375 INFO L78 Accepts]: Start accepts. Automaton has 2398 states and 2894 transitions. Word has length 215 [2020-07-21 01:30:59,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:30:59,376 INFO L479 AbstractCegarLoop]: Abstraction has 2398 states and 2894 transitions. [2020-07-21 01:30:59,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:30:59,376 INFO L276 IsEmpty]: Start isEmpty. Operand 2398 states and 2894 transitions. [2020-07-21 01:30:59,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 299 [2020-07-21 01:30:59,383 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:30:59,384 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:30:59,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:30:59,598 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:30:59,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:30:59,599 INFO L82 PathProgramCache]: Analyzing trace with hash 1481429953, now seen corresponding path program 1 times [2020-07-21 01:30:59,599 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:30:59,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1704217520] [2020-07-21 01:30:59,600 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 01:30:59,739 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:30:59,739 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:30:59,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 17 conjunts are in the unsatisfiable core [2020-07-21 01:30:59,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:30:59,918 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 24 [2020-07-21 01:30:59,987 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 01:30:59,988 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:30:59,989 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:31:00,045 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:31:00,151 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 261 proven. 69 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-21 01:31:00,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:31:00,324 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:00,325 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:00,326 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:00,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:00,367 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:00,367 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:00,552 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-07-21 01:31:00,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:00,680 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:00,828 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:00,829 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:01,206 INFO L134 CoverageAnalysis]: Checked inductivity of 387 backedges. 173 proven. 210 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 01:31:01,207 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1704217520] [2020-07-21 01:31:01,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:31:01,207 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2020-07-21 01:31:01,208 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729944274] [2020-07-21 01:31:01,208 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-21 01:31:01,209 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:31:01,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-21 01:31:01,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-07-21 01:31:01,209 INFO L87 Difference]: Start difference. First operand 2398 states and 2894 transitions. Second operand 13 states. [2020-07-21 01:31:06,961 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 32 [2020-07-21 01:31:11,735 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 34 [2020-07-21 01:31:13,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:31:13,308 INFO L93 Difference]: Finished difference Result 6600 states and 8287 transitions. [2020-07-21 01:31:13,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-07-21 01:31:13,309 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 298 [2020-07-21 01:31:13,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:31:13,361 INFO L225 Difference]: With dead ends: 6600 [2020-07-21 01:31:13,361 INFO L226 Difference]: Without dead ends: 4351 [2020-07-21 01:31:13,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 648 GetRequests, 609 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 323 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=398, Invalid=1162, Unknown=0, NotChecked=0, Total=1560 [2020-07-21 01:31:13,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4351 states. [2020-07-21 01:31:13,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4351 to 3880. [2020-07-21 01:31:13,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3880 states. [2020-07-21 01:31:13,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3880 states to 3880 states and 4687 transitions. [2020-07-21 01:31:13,467 INFO L78 Accepts]: Start accepts. Automaton has 3880 states and 4687 transitions. Word has length 298 [2020-07-21 01:31:13,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:31:13,468 INFO L479 AbstractCegarLoop]: Abstraction has 3880 states and 4687 transitions. [2020-07-21 01:31:13,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-21 01:31:13,468 INFO L276 IsEmpty]: Start isEmpty. Operand 3880 states and 4687 transitions. [2020-07-21 01:31:13,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2020-07-21 01:31:13,479 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:31:13,480 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:31:13,695 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:31:13,696 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:31:13,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:31:13,697 INFO L82 PathProgramCache]: Analyzing trace with hash -878123566, now seen corresponding path program 1 times [2020-07-21 01:31:13,698 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:31:13,698 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [288772455] [2020-07-21 01:31:13,698 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 01:31:13,853 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:31:13,853 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:31:13,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 424 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 01:31:13,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:31:13,914 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:31:13,915 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:31:13,916 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:31:13,916 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,917 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,923 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,924 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:31:13,928 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,930 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,932 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,933 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:31:13,934 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:31:13,934 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,936 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:31:13,937 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,942 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,943 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,945 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,947 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:31:13,948 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,949 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 01:31:13,951 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,953 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,955 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:13,957 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:31:13,958 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 01:31:38,529 WARN L193 SmtUtils]: Spent 24.50 s on a formula simplification. DAG size of input: 69 DAG size of output: 38 [2020-07-21 01:31:38,575 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:31:38,778 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 01:31:39,121 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 358 proven. 4 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-07-21 01:31:39,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:31:39,272 INFO L501 QuantifierPusher]: Distributing 4 disjuncts over 2 conjuncts [2020-07-21 01:31:39,615 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:39,616 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,621 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,622 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,622 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,624 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,625 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,627 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,627 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,631 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,632 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,634 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,639 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,640 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,641 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,643 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,649 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,654 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,655 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,657 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,658 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,659 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,660 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,662 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,663 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,665 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:31:39,666 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:39,667 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,673 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,676 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,681 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,681 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,684 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,685 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,686 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,687 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,688 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,689 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,690 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,691 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,692 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,693 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,694 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,695 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,697 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,697 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,700 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,701 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,702 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,704 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:39,705 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,705 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,706 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,707 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,708 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,709 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,710 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,711 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,712 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,713 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,714 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,717 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,718 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,719 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,720 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,721 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,724 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,725 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,727 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,730 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,731 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 01:31:39,732 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,733 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,736 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,738 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:31:39,739 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,739 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:31:39,740 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:31:39,741 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,742 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,743 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,745 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,746 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:31:39,747 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,748 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,751 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,753 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:31:39,753 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,754 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 01:31:39,755 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,756 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,756 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:39,759 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,760 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,760 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:31:39,761 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:31:53,796 WARN L193 SmtUtils]: Spent 13.80 s on a formula simplification. DAG size of input: 109 DAG size of output: 25 [2020-07-21 01:31:53,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [288772455] [2020-07-21 01:31:53,798 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:31:53,798 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-21 01:31:53,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463906827] [2020-07-21 01:31:53,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 01:31:53,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:31:53,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 01:31:53,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2020-07-21 01:31:53,801 INFO L87 Difference]: Start difference. First operand 3880 states and 4687 transitions. Second operand 9 states. [2020-07-21 01:31:57,164 WARN L193 SmtUtils]: Spent 2.26 s on a formula simplification. DAG size of input: 57 DAG size of output: 43 [2020-07-21 01:33:13,370 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 58 DAG size of output: 40 [2020-07-21 01:33:47,517 WARN L193 SmtUtils]: Spent 22.93 s on a formula simplification. DAG size of input: 48 DAG size of output: 48 [2020-07-21 01:33:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:33:47,687 INFO L93 Difference]: Finished difference Result 7929 states and 9688 transitions. [2020-07-21 01:33:47,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-21 01:33:47,691 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 347 [2020-07-21 01:33:47,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:33:47,711 INFO L225 Difference]: With dead ends: 7929 [2020-07-21 01:33:47,711 INFO L226 Difference]: Without dead ends: 4200 [2020-07-21 01:33:47,723 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 561 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 67.1s TimeCoverageRelationStatistics Valid=223, Invalid=533, Unknown=0, NotChecked=0, Total=756 [2020-07-21 01:33:47,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2020-07-21 01:33:47,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 4180. [2020-07-21 01:33:47,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4180 states. [2020-07-21 01:33:47,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4180 states to 4180 states and 5017 transitions. [2020-07-21 01:33:47,859 INFO L78 Accepts]: Start accepts. Automaton has 4180 states and 5017 transitions. Word has length 347 [2020-07-21 01:33:47,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:33:47,860 INFO L479 AbstractCegarLoop]: Abstraction has 4180 states and 5017 transitions. [2020-07-21 01:33:47,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 01:33:47,860 INFO L276 IsEmpty]: Start isEmpty. Operand 4180 states and 5017 transitions. [2020-07-21 01:33:47,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-07-21 01:33:47,881 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:33:47,883 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 01:33:48,097 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:33:48,098 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:33:48,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:33:48,099 INFO L82 PathProgramCache]: Analyzing trace with hash 878111809, now seen corresponding path program 1 times [2020-07-21 01:33:48,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:33:48,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [664296934] [2020-07-21 01:33:48,101 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 01:33:48,386 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:33:48,387 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:33:48,389 INFO L263 TraceCheckSpWp]: Trace formula consists of 575 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:33:48,395 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:33:48,480 INFO L134 CoverageAnalysis]: Checked inductivity of 419 backedges. 174 proven. 0 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2020-07-21 01:33:48,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:33:48,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [664296934] [2020-07-21 01:33:48,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:33:48,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:33:48,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584937107] [2020-07-21 01:33:48,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:33:48,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:33:48,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:33:48,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:33:48,482 INFO L87 Difference]: Start difference. First operand 4180 states and 5017 transitions. Second operand 3 states. [2020-07-21 01:33:50,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:33:50,167 INFO L93 Difference]: Finished difference Result 8928 states and 10741 transitions. [2020-07-21 01:33:50,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:33:50,173 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 366 [2020-07-21 01:33:50,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:33:50,189 INFO L225 Difference]: With dead ends: 8928 [2020-07-21 01:33:50,189 INFO L226 Difference]: Without dead ends: 3884 [2020-07-21 01:33:50,201 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 364 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 01:33:50,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3884 states. [2020-07-21 01:33:50,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3884 to 3884. [2020-07-21 01:33:50,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3884 states. [2020-07-21 01:33:50,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 4630 transitions. [2020-07-21 01:33:50,283 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 4630 transitions. Word has length 366 [2020-07-21 01:33:50,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:33:50,283 INFO L479 AbstractCegarLoop]: Abstraction has 3884 states and 4630 transitions. [2020-07-21 01:33:50,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:33:50,284 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 4630 transitions. [2020-07-21 01:33:50,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 440 [2020-07-21 01:33:50,300 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:33:50,301 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-07-21 01:33:50,513 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:33:50,514 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:33:50,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:33:50,515 INFO L82 PathProgramCache]: Analyzing trace with hash -22718950, now seen corresponding path program 1 times [2020-07-21 01:33:50,515 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:33:50,515 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962638229] [2020-07-21 01:33:50,516 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 01:33:50,720 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:33:50,721 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:33:50,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 526 conjuncts, 23 conjunts are in the unsatisfiable core [2020-07-21 01:33:50,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:33:51,737 WARN L193 SmtUtils]: Spent 867.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 38 [2020-07-21 01:33:51,884 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-21 01:33:51,884 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:33:51,886 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 01:33:52,000 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:33:52,164 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 404 proven. 167 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-07-21 01:33:52,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:33:52,298 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 15 [2020-07-21 01:33:52,480 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 25 DAG size of output: 23 [2020-07-21 01:33:52,541 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:33:52,542 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:52,543 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:52,544 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:33:52,632 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:52,632 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:33:52,962 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 29 DAG size of output: 25 [2020-07-21 01:33:53,344 WARN L193 SmtUtils]: Spent 173.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2020-07-21 01:33:53,437 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,438 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,439 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,440 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,470 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,471 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,471 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,472 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,473 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,475 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,476 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,477 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:33:53,949 INFO L134 CoverageAnalysis]: Checked inductivity of 699 backedges. 396 proven. 79 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2020-07-21 01:33:53,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962638229] [2020-07-21 01:33:53,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:33:53,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-21 01:33:53,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492937984] [2020-07-21 01:33:53,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:33:53,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:33:53,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:33:53,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:33:53,958 INFO L87 Difference]: Start difference. First operand 3884 states and 4630 transitions. Second operand 12 states. [2020-07-21 01:33:59,873 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 35 [2020-07-21 01:34:00,303 WARN L193 SmtUtils]: Spent 179.00 ms on a formula simplification that was a NOOP. DAG size: 46 [2020-07-21 01:34:03,374 WARN L193 SmtUtils]: Spent 239.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 18 [2020-07-21 01:34:07,400 WARN L193 SmtUtils]: Spent 263.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 26 [2020-07-21 01:34:10,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:10,487 INFO L93 Difference]: Finished difference Result 8235 states and 9979 transitions. [2020-07-21 01:34:10,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 01:34:10,493 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 439 [2020-07-21 01:34:10,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:10,516 INFO L225 Difference]: With dead ends: 8235 [2020-07-21 01:34:10,517 INFO L226 Difference]: Without dead ends: 4502 [2020-07-21 01:34:10,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 906 GetRequests, 877 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.8s TimeCoverageRelationStatistics Valid=155, Invalid=601, Unknown=0, NotChecked=0, Total=756 [2020-07-21 01:34:10,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4502 states. [2020-07-21 01:34:10,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4502 to 4186. [2020-07-21 01:34:10,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4186 states. [2020-07-21 01:34:10,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4186 states to 4186 states and 4886 transitions. [2020-07-21 01:34:10,660 INFO L78 Accepts]: Start accepts. Automaton has 4186 states and 4886 transitions. Word has length 439 [2020-07-21 01:34:10,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:10,661 INFO L479 AbstractCegarLoop]: Abstraction has 4186 states and 4886 transitions. [2020-07-21 01:34:10,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:34:10,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4186 states and 4886 transitions. [2020-07-21 01:34:10,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 452 [2020-07-21 01:34:10,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:10,690 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2020-07-21 01:34:10,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:10,906 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:10,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:10,907 INFO L82 PathProgramCache]: Analyzing trace with hash -2058003474, now seen corresponding path program 1 times [2020-07-21 01:34:10,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:10,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [117138862] [2020-07-21 01:34:10,908 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 01:34:11,271 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:34:11,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:11,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 701 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:34:11,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:11,585 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-07-21 01:34:11,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:34:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 465 proven. 2 refuted. 0 times theorem prover too weak. 247 trivial. 0 not checked. [2020-07-21 01:34:12,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [117138862] [2020-07-21 01:34:12,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:34:12,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 01:34:12,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028595101] [2020-07-21 01:34:12,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 01:34:12,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:12,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 01:34:12,050 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 01:34:12,050 INFO L87 Difference]: Start difference. First operand 4186 states and 4886 transitions. Second operand 6 states. [2020-07-21 01:34:16,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:34:16,235 INFO L93 Difference]: Finished difference Result 8150 states and 9723 transitions. [2020-07-21 01:34:16,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:34:16,239 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 451 [2020-07-21 01:34:16,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:34:16,279 INFO L225 Difference]: With dead ends: 8150 [2020-07-21 01:34:16,280 INFO L226 Difference]: Without dead ends: 4266 [2020-07-21 01:34:16,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 898 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 01:34:16,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4266 states. [2020-07-21 01:34:16,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4266 to 3733. [2020-07-21 01:34:16,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3733 states. [2020-07-21 01:34:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3733 states to 3733 states and 4176 transitions. [2020-07-21 01:34:16,458 INFO L78 Accepts]: Start accepts. Automaton has 3733 states and 4176 transitions. Word has length 451 [2020-07-21 01:34:16,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:34:16,459 INFO L479 AbstractCegarLoop]: Abstraction has 3733 states and 4176 transitions. [2020-07-21 01:34:16,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 01:34:16,460 INFO L276 IsEmpty]: Start isEmpty. Operand 3733 states and 4176 transitions. [2020-07-21 01:34:16,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-07-21 01:34:16,477 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:34:16,478 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 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] [2020-07-21 01:34:16,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:34:16,693 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:34:16,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:34:16,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1482910758, now seen corresponding path program 1 times [2020-07-21 01:34:16,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:34:16,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1001696489] [2020-07-21 01:34:16,695 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 01:34:17,149 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:34:17,149 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:34:17,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 715 conjuncts, 40 conjunts are in the unsatisfiable core [2020-07-21 01:34:17,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:34:17,526 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 25 [2020-07-21 01:34:17,826 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 26 [2020-07-21 01:34:18,203 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2020-07-21 01:34:18,209 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:34:18,211 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 01:34:18,874 WARN L193 SmtUtils]: Spent 390.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 28 [2020-07-21 01:34:20,033 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 0 proven. 479 refuted. 0 times theorem prover too weak. 263 trivial. 0 not checked. [2020-07-21 01:34:20,034 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:34:20,247 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-07-21 01:34:20,480 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:34:20,480 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:34:20,481 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 01:34:20,481 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:34:20,482 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 4 conjuncts [2020-07-21 01:34:20,482 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 5 conjuncts [2020-07-21 01:34:20,851 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 22 [2020-07-21 01:34:20,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1001696489] [2020-07-21 01:34:20,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:34:20,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-07-21 01:34:20,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946967100] [2020-07-21 01:34:20,855 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 01:34:20,856 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:34:20,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 01:34:20,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-07-21 01:34:20,856 INFO L87 Difference]: Start difference. First operand 3733 states and 4176 transitions. Second operand 14 states. [2020-07-21 01:34:23,596 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 25 [2020-07-21 01:34:31,198 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 28 DAG size of output: 19 [2020-07-21 01:34:49,937 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 26 [2020-07-21 01:34:50,829 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 13 [2020-07-21 01:34:57,179 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 28 [2020-07-21 01:35:14,752 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 40 [2020-07-21 01:35:15,046 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 33 DAG size of output: 27 [2020-07-21 01:35:22,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:35:22,225 INFO L93 Difference]: Finished difference Result 9683 states and 10921 transitions. [2020-07-21 01:35:22,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-21 01:35:22,231 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 471 [2020-07-21 01:35:22,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:35:22,250 INFO L225 Difference]: With dead ends: 9683 [2020-07-21 01:35:22,250 INFO L226 Difference]: Without dead ends: 6252 [2020-07-21 01:35:22,259 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 543 GetRequests, 514 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=184, Invalid=686, Unknown=0, NotChecked=0, Total=870 [2020-07-21 01:35:22,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6252 states. [2020-07-21 01:35:22,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6252 to 5803. [2020-07-21 01:35:22,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5803 states. [2020-07-21 01:35:22,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5803 states to 5803 states and 6456 transitions. [2020-07-21 01:35:22,382 INFO L78 Accepts]: Start accepts. Automaton has 5803 states and 6456 transitions. Word has length 471 [2020-07-21 01:35:22,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:35:22,383 INFO L479 AbstractCegarLoop]: Abstraction has 5803 states and 6456 transitions. [2020-07-21 01:35:22,383 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 01:35:22,384 INFO L276 IsEmpty]: Start isEmpty. Operand 5803 states and 6456 transitions. [2020-07-21 01:35:22,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-07-21 01:35:22,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:35:22,402 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 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, 3, 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] [2020-07-21 01:35:22,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:35:22,616 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:35:22,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:35:22,617 INFO L82 PathProgramCache]: Analyzing trace with hash -1114469771, now seen corresponding path program 1 times [2020-07-21 01:35:22,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:35:22,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [806090960] [2020-07-21 01:35:22,618 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 01:35:22,819 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:35:22,819 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:35:22,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 555 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 01:35:22,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:35:22,857 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:35:22,858 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 01:35:23,103 WARN L193 SmtUtils]: Spent 210.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 31 [2020-07-21 01:35:23,137 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:35:25,290 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 01:35:25,290 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:35:25,291 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:35:25,373 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:35:25,822 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 547 proven. 2 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2020-07-21 01:35:25,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:35:26,219 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-07-21 01:35:26,323 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 22 [2020-07-21 01:35:26,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:35:26,328 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:26,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:26,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:35:26,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:26,423 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:35:26,834 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:26,835 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:26,836 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:26,836 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:35:26,844 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:26,845 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:35:27,263 INFO L134 CoverageAnalysis]: Checked inductivity of 742 backedges. 339 proven. 163 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2020-07-21 01:35:27,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [806090960] [2020-07-21 01:35:27,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:35:27,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-21 01:35:27,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [610079702] [2020-07-21 01:35:27,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 01:35:27,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:35:27,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 01:35:27,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=63, Unknown=1, NotChecked=0, Total=90 [2020-07-21 01:35:27,266 INFO L87 Difference]: Start difference. First operand 5803 states and 6456 transitions. Second operand 10 states. [2020-07-21 01:35:27,428 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 27 DAG size of output: 21 [2020-07-21 01:35:59,186 WARN L193 SmtUtils]: Spent 279.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-07-21 01:36:02,596 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-07-21 01:36:15,846 WARN L193 SmtUtils]: Spent 2.31 s on a formula simplification. DAG size of input: 44 DAG size of output: 30 [2020-07-21 01:38:14,035 WARN L193 SmtUtils]: Spent 246.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 23 [2020-07-21 01:38:41,122 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 36 DAG size of output: 21 [2020-07-21 01:38:50,124 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 17 [2020-07-21 01:41:23,847 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:41:23,848 INFO L93 Difference]: Finished difference Result 11870 states and 13284 transitions. [2020-07-21 01:41:23,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-21 01:41:23,858 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 474 [2020-07-21 01:41:23,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:41:23,858 INFO L225 Difference]: With dead ends: 11870 [2020-07-21 01:41:23,859 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:41:23,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 980 GetRequests, 952 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 29.9s TimeCoverageRelationStatistics Valid=186, Invalid=454, Unknown=10, NotChecked=0, Total=650 [2020-07-21 01:41:23,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:41:23,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:41:23,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:41:23,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:41:23,884 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 474 [2020-07-21 01:41:23,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:41:23,885 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:41:23,885 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 01:41:23,885 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:41:23,885 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:41:24,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:41:24,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:41:26,238 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 378 [2020-07-21 01:41:26,872 WARN L193 SmtUtils]: Spent 626.00 ms on a formula simplification. DAG size of input: 412 DAG size of output: 378 [2020-07-21 01:41:27,022 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 16 [2020-07-21 01:41:27,404 WARN L193 SmtUtils]: Spent 375.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 31 [2020-07-21 01:41:36,176 WARN L193 SmtUtils]: Spent 8.75 s on a formula simplification. DAG size of input: 388 DAG size of output: 76 [2020-07-21 01:41:36,335 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification. DAG size of input: 22 DAG size of output: 12 [2020-07-21 01:41:45,646 WARN L193 SmtUtils]: Spent 9.30 s on a formula simplification. DAG size of input: 378 DAG size of output: 61 [2020-07-21 01:41:54,798 WARN L193 SmtUtils]: Spent 9.15 s on a formula simplification. DAG size of input: 378 DAG size of output: 61 [2020-07-21 01:41:54,805 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:41:54,805 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= |old(~a19~0)| ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 01:41:54,805 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:41:54,806 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 01:41:54,806 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,806 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,806 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,806 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,806 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,806 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,807 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 01:41:54,807 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 01:41:54,807 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 01:41:54,807 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 01:41:54,807 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 01:41:54,807 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 01:41:54,807 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 01:41:54,809 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 01:41:54,809 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 01:41:54,809 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 01:41:54,809 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 01:41:54,810 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 01:41:54,811 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 01:41:54,811 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 01:41:54,811 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 01:41:54,811 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 01:41:54,811 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 01:41:54,811 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 01:41:54,811 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 01:41:54,812 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 01:41:54,812 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 01:41:54,812 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-21 01:41:54,812 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 01:41:54,812 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,812 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 01:41:54,813 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,814 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 01:41:54,815 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 01:41:54,816 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 01:41:54,816 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 01:41:54,816 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 01:41:54,816 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 01:41:54,816 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 01:41:54,816 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 01:41:54,817 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,818 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,819 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,819 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,819 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,819 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,819 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 01:41:54,819 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 01:41:54,819 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 01:41:54,820 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,821 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 01:41:54,822 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 01:41:54,823 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 01:41:54,823 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 01:41:54,823 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 01:41:54,823 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 01:41:54,823 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 01:41:54,825 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,825 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 01:41:54,826 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 01:41:54,827 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 01:41:54,827 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 01:41:54,827 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 01:41:54,827 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 01:41:54,827 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 01:41:54,830 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 01:41:54,831 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse4 (<= ~a10~0 |old(~a10~0)|)) (.cse5 (<= |old(~a10~0)| ~a10~0)) (.cse6 (<= ~a19~0 |old(~a19~0)|)) (.cse7 (= ~a1~0 |old(~a1~0)|))) (let ((.cse0 (not (= 0 ~a12~0))) (.cse1 (not (= 14 ~a4~0))) (.cse3 (not (<= |old(~a19~0)| 9))) (.cse2 (and (<= |old(~a19~0)| ~a19~0) .cse4 .cse5 .cse6 .cse7))) (and (or (forall ((v_~a1~0_497 Int)) (or (not (<= 23 v_~a1~0_497)) (not (<= (+ (mod (+ v_~a1~0_497 36) 89) 110) |old(~a1~0)|)) (not (<= 0 (+ v_~a1~0_497 345534))))) .cse0 .cse1 .cse2 .cse3) (or (not (< 0 |old(~a10~0)|)) (and (not (< |old(~a10~0)| 2)) (not (< |old(~a1~0)| 39))) .cse0 (not (<= 9 |old(~a19~0)|)) .cse1 .cse2 (not (<= |old(~a10~0)| 2))) (or (not (<= |old(~a10~0)| 0)) .cse0 .cse1 .cse2 (not (< (div (+ |old(~a1~0)| (- 227431)) 5) 39))) (or (not (<= |old(~a19~0)| 7)) (and .cse4 .cse5 .cse6 .cse7) .cse0 .cse1) (or .cse0 .cse1 .cse3 .cse2 (not (<= 2 |old(~a10~0)|)))))) [2020-07-21 01:41:54,831 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 01:41:54,831 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 01:41:54,831 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 01:41:54,831 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,831 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,831 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,831 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 01:41:54,832 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 01:41:54,833 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 01:41:54,833 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 01:41:54,833 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 01:41:54,833 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 01:41:54,833 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 01:41:54,834 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 01:41:54,835 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,835 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,835 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,835 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,835 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,838 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 01:41:54,839 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,840 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 01:41:54,841 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 01:41:54,842 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 01:41:54,842 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 01:41:54,842 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 01:41:54,842 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:41:54,842 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 0 ~a12~0) (= 23 ~a1~0)) [2020-07-21 01:41:54,842 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:41:54,842 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:41:54,842 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (not (= 14 ~a4~0)) (and (<= |old(~a19~0)| ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-21 01:41:54,843 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:41:54,843 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse1 (<= ~a19~0 9)) (.cse0 (or (< ~a10~0 2) (< ~a1~0 39)))) (or (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (and (exists ((v_~a1~0_497 Int)) (and (<= 0 (+ v_~a1~0_497 345534)) (<= (+ (mod (+ v_~a1~0_497 36) 89) 110) ~a1~0) (<= 23 v_~a1~0_497))) (< 0 ~a10~0) .cse0) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (and (<= ~a10~0 0) .cse1) (not (= 14 ~a4~0)) (and .cse1 (<= 2 ~a10~0)) (not (<= |old(~a19~0)| 9)) (<= ~a19~0 7) (and (<= 9 ~a19~0) .cse0 (<= ~a10~0 2) (< (div (+ ~a1~0 (- 227431)) 5) 39)))) [2020-07-21 01:41:54,843 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 01:41:54,843 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 01:41:54,843 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse1 (<= ~a19~0 9)) (.cse0 (or (< ~a10~0 2) (< ~a1~0 39)))) (or (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (and (exists ((v_~a1~0_497 Int)) (and (<= 0 (+ v_~a1~0_497 345534)) (<= (+ (mod (+ v_~a1~0_497 36) 89) 110) ~a1~0) (<= 23 v_~a1~0_497))) (< 0 ~a10~0) .cse0) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (and (<= ~a10~0 0) .cse1) (not (= 14 ~a4~0)) (and .cse1 (<= 2 ~a10~0)) (not (<= |old(~a19~0)| 9)) (<= ~a19~0 7) (and (<= 9 ~a19~0) .cse0 (<= ~a10~0 2) (< (div (+ ~a1~0 (- 227431)) 5) 39)))) [2020-07-21 01:41:54,844 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 01:41:54,860 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,861 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,862 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,876 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,876 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,877 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,882 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:41:54 BoogieIcfgContainer [2020-07-21 01:41:54,882 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:41:54,886 INFO L168 Benchmark]: Toolchain (without parser) took 708406.50 ms. Allocated memory was 140.5 MB in the beginning and 454.6 MB in the end (delta: 314.0 MB). Free memory was 101.1 MB in the beginning and 175.3 MB in the end (delta: -74.2 MB). Peak memory consumption was 410.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:54,887 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 01:41:54,890 INFO L168 Benchmark]: CACSL2BoogieTranslator took 755.71 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 170.9 MB in the end (delta: -70.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:54,891 INFO L168 Benchmark]: Boogie Preprocessor took 132.86 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 166.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:54,892 INFO L168 Benchmark]: RCFGBuilder took 1381.53 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 182.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:54,892 INFO L168 Benchmark]: TraceAbstraction took 706128.31 ms. Allocated memory was 235.9 MB in the beginning and 454.6 MB in the end (delta: 218.6 MB). Free memory was 181.4 MB in the beginning and 175.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 395.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:41:54,895 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 755.71 ms. Allocated memory was 140.5 MB in the beginning and 204.5 MB in the end (delta: 64.0 MB). Free memory was 100.9 MB in the beginning and 170.9 MB in the end (delta: -70.0 MB). Peak memory consumption was 34.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.86 ms. Allocated memory is still 204.5 MB. Free memory was 170.9 MB in the beginning and 166.6 MB in the end (delta: 4.3 MB). Peak memory consumption was 4.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1381.53 ms. Allocated memory was 204.5 MB in the beginning and 235.9 MB in the end (delta: 31.5 MB). Free memory was 165.8 MB in the beginning and 182.8 MB in the end (delta: -17.0 MB). Peak memory consumption was 84.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 706128.31 ms. Allocated memory was 235.9 MB in the beginning and 454.6 MB in the end (delta: 218.6 MB). Free memory was 181.4 MB in the beginning and 175.3 MB in the end (delta: 6.1 MB). Peak memory consumption was 395.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 175]: 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: 582]: Loop Invariant [2020-07-21 01:41:54,902 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,902 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,903 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] [2020-07-21 01:41:54,904 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_497,QUANTIFIED] Derived loop invariant: (((((((((!(\old(a10) <= 0) || !(23 == \old(a1))) || (((\exists v_~a1~0_497 : int :: (0 <= v_~a1~0_497 + 345534 && (v_~a1~0_497 + 36) % 89 + 110 <= a1) && 23 <= v_~a1~0_497) && 0 < a10) && (a10 < 2 || a1 < 39))) || !(0 == a12)) || !(9 <= \old(a19))) || (a10 <= 0 && a19 <= 9)) || !(14 == a4)) || (a19 <= 9 && 2 <= a10)) || !(\old(a19) <= 9)) || a19 <= 7) || (((9 <= a19 && (a10 < 2 || a1 < 39)) && a10 <= 2) && (a1 + -227431) / 5 < 39) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 675.2s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 586.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 30.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 793 SDtfs, 8621 SDslu, 1053 SDs, 0 SdLazy, 23980 SolverSat, 2849 SolverUnsat, 186 SolverUnknown, 0 SolverNotchecked, 482.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 6660 GetRequests, 6447 SyntacticMatches, 19 SemanticMatches, 194 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 814 ImplicationChecksByTransitivity, 136.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=5803occurred in iteration=13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.2s AutomataMinimizationTime, 14 MinimizatonAttempts, 2451 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 273 PreInvPairs, 383 NumberOfFragments, 457 HoareAnnotationTreeSize, 273 FomulaSimplifications, 70523 FormulaSimplificationTreeSizeReduction, 2.7s HoareSimplificationTime, 7 FomulaSimplificationsInter, 51644 FormulaSimplificationTreeSizeReductionInter, 27.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 2.0s SatisfiabilityAnalysisTime, 81.3s InterpolantComputationTime, 3932 NumberOfCodeBlocks, 3329 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 6133 ConstructedInterpolants, 94 QuantifiedInterpolants, 11319725 SizeOfPredicates, 34 NumberOfNonLiveVariables, 5711 ConjunctsInSsa, 187 ConjunctsInUnsatCore, 21 InterpolantComputations, 5 PerfectInterpolantSequences, 6417/7672 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...