/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_VARIABLES --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 16:36:35,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 16:36:35,456 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 16:36:35,468 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 16:36:35,469 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 16:36:35,470 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 16:36:35,471 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 16:36:35,473 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 16:36:35,475 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 16:36:35,475 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 16:36:35,476 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 16:36:35,477 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 16:36:35,478 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 16:36:35,479 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 16:36:35,480 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 16:36:35,481 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 16:36:35,481 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 16:36:35,482 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 16:36:35,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 16:36:35,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 16:36:35,487 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 16:36:35,488 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 16:36:35,489 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 16:36:35,490 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 16:36:35,492 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 16:36:35,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 16:36:35,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 16:36:35,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 16:36:35,502 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 16:36:35,516 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 16:36:35,516 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 16:36:35,517 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 16:36:35,518 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 16:36:35,518 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 16:36:35,518 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 16:36:35,518 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 16:36:35,518 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 16:36:35,519 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 16:36:35,519 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 16:36:35,519 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 16:36:35,519 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 16:36:35,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 16:36:35,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 16:36:35,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 16:36:35,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 16:36:35,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 16:36:35,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 16:36:35,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 16:36:35,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 16:36:35,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 16:36:35,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 16:36:35,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 16:36:35,522 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 16:36:35,522 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 16:36:35,522 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 16:36:35,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:35,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 16:36:35,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 16:36:35,523 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_VARIABLES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 2 [2020-07-21 16:36:35,803 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 16:36:35,817 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 16:36:35,821 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 16:36:35,822 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 16:36:35,823 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 16:36:35,823 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-07-21 16:36:35,897 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d01e760/3d1e694efe84477fb686b42a30d12270/FLAG4a89f8c38 [2020-07-21 16:36:36,435 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 16:36:36,436 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label38.c [2020-07-21 16:36:36,447 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d01e760/3d1e694efe84477fb686b42a30d12270/FLAG4a89f8c38 [2020-07-21 16:36:36,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7d01e760/3d1e694efe84477fb686b42a30d12270 [2020-07-21 16:36:36,749 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 16:36:36,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 16:36:36,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 16:36:36,754 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 16:36:36,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 16:36:36,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:36:36" (1/1) ... [2020-07-21 16:36:36,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a0172cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:36, skipping insertion in model container [2020-07-21 16:36:36,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:36:36" (1/1) ... [2020-07-21 16:36:36,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 16:36:36,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 16:36:37,312 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:36:37,317 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 16:36:37,620 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 16:36:37,645 INFO L208 MainTranslator]: Completed translation [2020-07-21 16:36:37,646 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37 WrapperNode [2020-07-21 16:36:37,646 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 16:36:37,648 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 16:36:37,648 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 16:36:37,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 16:36:37,667 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (1/1) ... [2020-07-21 16:36:37,669 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (1/1) ... [2020-07-21 16:36:37,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (1/1) ... [2020-07-21 16:36:37,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (1/1) ... [2020-07-21 16:36:37,733 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (1/1) ... [2020-07-21 16:36:37,761 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (1/1) ... [2020-07-21 16:36:37,771 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (1/1) ... [2020-07-21 16:36:37,792 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 16:36:37,792 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 16:36:37,793 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 16:36:37,793 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 16:36:37,798 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (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 16:36:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 16:36:37,877 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 16:36:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 16:36:37,878 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 16:36:37,878 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 16:36:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 16:36:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 16:36:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 16:36:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 16:36:37,879 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 16:36:37,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 16:36:39,152 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 16:36:39,152 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 16:36:39,158 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:36:39 BoogieIcfgContainer [2020-07-21 16:36:39,159 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 16:36:39,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 16:36:39,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 16:36:39,163 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 16:36:39,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:36:36" (1/3) ... [2020-07-21 16:36:39,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da68dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:36:39, skipping insertion in model container [2020-07-21 16:36:39,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:36:37" (2/3) ... [2020-07-21 16:36:39,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da68dc6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:36:39, skipping insertion in model container [2020-07-21 16:36:39,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:36:39" (3/3) ... [2020-07-21 16:36:39,167 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label38.c [2020-07-21 16:36:39,180 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 16:36:39,189 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 16:36:39,206 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 16:36:39,236 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 16:36:39,236 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 16:36:39,236 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 16:36:39,236 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 16:36:39,236 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 16:36:39,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 16:36:39,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 16:36:39,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 16:36:39,262 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 16:36:39,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-21 16:36:39,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:39,272 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] [2020-07-21 16:36:39,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:39,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:39,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1813043417, now seen corresponding path program 1 times [2020-07-21 16:36:39,291 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:39,292 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38712702] [2020-07-21 16:36:39,293 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:39,413 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:39,413 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:39,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 16:36:39,423 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:39,485 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 16:36:39,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:36:39,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38712702] [2020-07-21 16:36:39,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:36:39,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:36:39,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287170291] [2020-07-21 16:36:39,493 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:36:39,494 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:39,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:36:39,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:36:39,510 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 16:36:40,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:40,543 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 16:36:40,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:36:40,545 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 38 [2020-07-21 16:36:40,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:40,561 INFO L225 Difference]: With dead ends: 586 [2020-07-21 16:36:40,561 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 16:36:40,568 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 16:36:40,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 16:36:40,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 16:36:40,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 16:36:40,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 16:36:40,636 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 38 [2020-07-21 16:36:40,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:40,636 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 16:36:40,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:36:40,637 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 16:36:40,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-07-21 16:36:40,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:40,642 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:36:40,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:40,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:40,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:40,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1939889954, now seen corresponding path program 1 times [2020-07-21 16:36:40,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:40,854 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [311447095] [2020-07-21 16:36:40,854 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:40,936 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:40,936 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:40,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:36:40,942 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:40,989 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:36:40,989 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:36:40,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [311447095] [2020-07-21 16:36:40,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:36:40,990 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:36:40,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232233707] [2020-07-21 16:36:40,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:36:40,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:40,993 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:36:40,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:36:40,994 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 3 states. [2020-07-21 16:36:41,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:41,692 INFO L93 Difference]: Finished difference Result 868 states and 1277 transitions. [2020-07-21 16:36:41,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:36:41,693 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 112 [2020-07-21 16:36:41,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:41,698 INFO L225 Difference]: With dead ends: 868 [2020-07-21 16:36:41,698 INFO L226 Difference]: Without dead ends: 580 [2020-07-21 16:36:41,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 111 GetRequests, 110 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 16:36:41,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-21 16:36:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-07-21 16:36:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-21 16:36:41,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 762 transitions. [2020-07-21 16:36:41,747 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 762 transitions. Word has length 112 [2020-07-21 16:36:41,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:41,748 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 762 transitions. [2020-07-21 16:36:41,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:36:41,748 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 762 transitions. [2020-07-21 16:36:41,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-07-21 16:36:41,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:41,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:36:41,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:41,967 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:41,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:41,968 INFO L82 PathProgramCache]: Analyzing trace with hash -444185243, now seen corresponding path program 1 times [2020-07-21 16:36:41,969 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:41,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626969694] [2020-07-21 16:36:41,970 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:42,044 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:42,045 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:42,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:36:42,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:42,081 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:36:42,081 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:36:42,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626969694] [2020-07-21 16:36:42,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:36:42,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:36:42,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130845797] [2020-07-21 16:36:42,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:36:42,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:42,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:36:42,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:36:42,084 INFO L87 Difference]: Start difference. First operand 580 states and 762 transitions. Second operand 3 states. [2020-07-21 16:36:42,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:42,806 INFO L93 Difference]: Finished difference Result 1440 states and 1957 transitions. [2020-07-21 16:36:42,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:36:42,811 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 117 [2020-07-21 16:36:42,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:42,817 INFO L225 Difference]: With dead ends: 1440 [2020-07-21 16:36:42,817 INFO L226 Difference]: Without dead ends: 866 [2020-07-21 16:36:42,819 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 115 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 16:36:42,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2020-07-21 16:36:42,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 866. [2020-07-21 16:36:42,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 866 states. [2020-07-21 16:36:42,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 866 states to 866 states and 1139 transitions. [2020-07-21 16:36:42,855 INFO L78 Accepts]: Start accepts. Automaton has 866 states and 1139 transitions. Word has length 117 [2020-07-21 16:36:42,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:42,856 INFO L479 AbstractCegarLoop]: Abstraction has 866 states and 1139 transitions. [2020-07-21 16:36:42,856 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:36:42,856 INFO L276 IsEmpty]: Start isEmpty. Operand 866 states and 1139 transitions. [2020-07-21 16:36:42,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-21 16:36:42,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:42,860 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:36:43,074 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:43,075 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:43,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:43,076 INFO L82 PathProgramCache]: Analyzing trace with hash 1165296197, now seen corresponding path program 1 times [2020-07-21 16:36:43,076 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:43,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [516063167] [2020-07-21 16:36:43,077 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:43,156 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:43,156 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:43,158 INFO L263 TraceCheckSpWp]: Trace formula consists of 271 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:36:43,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:43,193 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:36:43,193 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:36:43,193 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [516063167] [2020-07-21 16:36:43,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:36:43,194 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:36:43,194 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494679445] [2020-07-21 16:36:43,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:36:43,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:43,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:36:43,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:36:43,196 INFO L87 Difference]: Start difference. First operand 866 states and 1139 transitions. Second operand 3 states. [2020-07-21 16:36:43,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:43,880 INFO L93 Difference]: Finished difference Result 1583 states and 2141 transitions. [2020-07-21 16:36:43,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:36:43,882 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 133 [2020-07-21 16:36:43,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:43,894 INFO L225 Difference]: With dead ends: 1583 [2020-07-21 16:36:43,894 INFO L226 Difference]: Without dead ends: 1581 [2020-07-21 16:36:43,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 131 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 16:36:43,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-07-21 16:36:43,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1295. [2020-07-21 16:36:43,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1295 states. [2020-07-21 16:36:43,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1295 states to 1295 states and 1753 transitions. [2020-07-21 16:36:43,960 INFO L78 Accepts]: Start accepts. Automaton has 1295 states and 1753 transitions. Word has length 133 [2020-07-21 16:36:43,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:43,963 INFO L479 AbstractCegarLoop]: Abstraction has 1295 states and 1753 transitions. [2020-07-21 16:36:43,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:36:43,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1295 states and 1753 transitions. [2020-07-21 16:36:43,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2020-07-21 16:36:43,972 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:43,972 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, 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] [2020-07-21 16:36:44,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:44,186 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:44,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:44,186 INFO L82 PathProgramCache]: Analyzing trace with hash 588392979, now seen corresponding path program 1 times [2020-07-21 16:36:44,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:44,187 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [766763232] [2020-07-21 16:36:44,187 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:44,280 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:44,280 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:44,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 365 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:36:44,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:44,343 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:36:44,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:36:44,507 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 133 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:36:44,507 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [766763232] [2020-07-21 16:36:44,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:36:44,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 16:36:44,508 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115283553] [2020-07-21 16:36:44,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 16:36:44,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:44,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 16:36:44,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 16:36:44,510 INFO L87 Difference]: Start difference. First operand 1295 states and 1753 transitions. Second operand 7 states. [2020-07-21 16:36:45,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:45,989 INFO L93 Difference]: Finished difference Result 3506 states and 4847 transitions. [2020-07-21 16:36:45,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 16:36:45,990 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 190 [2020-07-21 16:36:45,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:46,004 INFO L225 Difference]: With dead ends: 3506 [2020-07-21 16:36:46,004 INFO L226 Difference]: Without dead ends: 1627 [2020-07-21 16:36:46,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 375 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-21 16:36:46,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-07-21 16:36:46,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1599. [2020-07-21 16:36:46,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1599 states. [2020-07-21 16:36:46,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1599 states to 1599 states and 1888 transitions. [2020-07-21 16:36:46,106 INFO L78 Accepts]: Start accepts. Automaton has 1599 states and 1888 transitions. Word has length 190 [2020-07-21 16:36:46,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:46,107 INFO L479 AbstractCegarLoop]: Abstraction has 1599 states and 1888 transitions. [2020-07-21 16:36:46,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 16:36:46,107 INFO L276 IsEmpty]: Start isEmpty. Operand 1599 states and 1888 transitions. [2020-07-21 16:36:46,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-07-21 16:36:46,111 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:46,111 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, 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] [2020-07-21 16:36:46,324 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:46,325 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:46,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:46,325 INFO L82 PathProgramCache]: Analyzing trace with hash -1370569995, now seen corresponding path program 1 times [2020-07-21 16:36:46,326 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:46,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548001893] [2020-07-21 16:36:46,327 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:46,428 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:46,428 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:46,430 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:36:46,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:46,495 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:36:46,495 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 16:36:46,591 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 130 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 16:36:46,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548001893] [2020-07-21 16:36:46,592 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 16:36:46,592 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 16:36:46,592 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209072090] [2020-07-21 16:36:46,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 16:36:46,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:46,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 16:36:46,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 16:36:46,594 INFO L87 Difference]: Start difference. First operand 1599 states and 1888 transitions. Second operand 6 states. [2020-07-21 16:36:47,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:47,473 INFO L93 Difference]: Finished difference Result 3514 states and 4215 transitions. [2020-07-21 16:36:47,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 16:36:47,474 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 206 [2020-07-21 16:36:47,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:47,484 INFO L225 Difference]: With dead ends: 3514 [2020-07-21 16:36:47,485 INFO L226 Difference]: Without dead ends: 1917 [2020-07-21 16:36:47,493 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 415 GetRequests, 406 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 16:36:47,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2020-07-21 16:36:47,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1764. [2020-07-21 16:36:47,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1764 states. [2020-07-21 16:36:47,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1764 states to 1764 states and 2102 transitions. [2020-07-21 16:36:47,548 INFO L78 Accepts]: Start accepts. Automaton has 1764 states and 2102 transitions. Word has length 206 [2020-07-21 16:36:47,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:47,548 INFO L479 AbstractCegarLoop]: Abstraction has 1764 states and 2102 transitions. [2020-07-21 16:36:47,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 16:36:47,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1764 states and 2102 transitions. [2020-07-21 16:36:47,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-07-21 16:36:47,553 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:47,553 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, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 16:36:47,767 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:47,768 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:47,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:47,769 INFO L82 PathProgramCache]: Analyzing trace with hash 24797361, now seen corresponding path program 1 times [2020-07-21 16:36:47,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:47,770 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299573175] [2020-07-21 16:36:47,770 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:47,874 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:47,874 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:47,876 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:36:47,879 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:47,919 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-07-21 16:36:47,919 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:36:47,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299573175] [2020-07-21 16:36:47,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:36:47,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:36:47,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803964126] [2020-07-21 16:36:47,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:36:47,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:47,921 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:36:47,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:36:47,922 INFO L87 Difference]: Start difference. First operand 1764 states and 2102 transitions. Second operand 3 states. [2020-07-21 16:36:48,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:48,449 INFO L93 Difference]: Finished difference Result 1911 states and 2249 transitions. [2020-07-21 16:36:48,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:36:48,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 224 [2020-07-21 16:36:48,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:48,460 INFO L225 Difference]: With dead ends: 1911 [2020-07-21 16:36:48,460 INFO L226 Difference]: Without dead ends: 1760 [2020-07-21 16:36:48,461 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 223 GetRequests, 222 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 16:36:48,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1760 states. [2020-07-21 16:36:48,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1760 to 1760. [2020-07-21 16:36:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1760 states. [2020-07-21 16:36:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1760 states to 1760 states and 2089 transitions. [2020-07-21 16:36:48,501 INFO L78 Accepts]: Start accepts. Automaton has 1760 states and 2089 transitions. Word has length 224 [2020-07-21 16:36:48,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:48,502 INFO L479 AbstractCegarLoop]: Abstraction has 1760 states and 2089 transitions. [2020-07-21 16:36:48,502 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:36:48,502 INFO L276 IsEmpty]: Start isEmpty. Operand 1760 states and 2089 transitions. [2020-07-21 16:36:48,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-07-21 16:36:48,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 16:36:48,507 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, 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] [2020-07-21 16:36:48,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:48,722 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 16:36:48,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 16:36:48,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1311750989, now seen corresponding path program 1 times [2020-07-21 16:36:48,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 16:36:48,723 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1558594655] [2020-07-21 16:36:48,723 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 16:36:48,865 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 16:36:48,865 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 16:36:48,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 16:36:48,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 16:36:48,911 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 16:36:48,912 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 16:36:48,912 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1558594655] [2020-07-21 16:36:48,912 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 16:36:48,912 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 16:36:48,913 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696954786] [2020-07-21 16:36:48,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 16:36:48,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 16:36:48,914 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 16:36:48,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 16:36:48,914 INFO L87 Difference]: Start difference. First operand 1760 states and 2089 transitions. Second operand 3 states. [2020-07-21 16:36:49,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 16:36:49,509 INFO L93 Difference]: Finished difference Result 3659 states and 4430 transitions. [2020-07-21 16:36:49,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 16:36:49,510 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 234 [2020-07-21 16:36:49,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 16:36:49,511 INFO L225 Difference]: With dead ends: 3659 [2020-07-21 16:36:49,511 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 16:36:49,518 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 232 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 16:36:49,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 16:36:49,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 16:36:49,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 16:36:49,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 16:36:49,523 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 234 [2020-07-21 16:36:49,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 16:36:49,523 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 16:36:49,523 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 16:36:49,523 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 16:36:49,523 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 16:36:49,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 16:36:49,730 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 16:36:50,432 WARN L193 SmtUtils]: Spent 261.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 49 [2020-07-21 16:36:50,590 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:36:50,590 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= ~a19~0 |old(~a19~0)|)) [2020-07-21 16:36:50,590 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:36:50,591 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 16:36:50,591 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,591 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,591 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,591 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,591 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,591 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,592 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 16:36:50,592 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 16:36:50,592 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 16:36:50,592 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 16:36:50,592 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 16:36:50,593 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 16:36:50,594 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 16:36:50,594 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 16:36:50,594 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 16:36:50,594 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 16:36:50,594 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 16:36:50,594 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,596 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,596 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,596 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,596 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,596 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 16:36:50,597 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 16:36:50,597 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 16:36:50,597 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 16:36:50,597 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 16:36:50,597 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 16:36:50,599 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 16:36:50,599 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 16:36:50,599 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 16:36:50,599 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 16:36:50,599 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 16:36:50,600 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 16:36:50,600 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 16:36:50,600 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 100) no Hoare annotation was computed. [2020-07-21 16:36:50,600 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 16:36:50,600 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,600 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,600 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,601 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,601 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,601 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 16:36:50,601 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 16:36:50,601 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 16:36:50,602 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 16:36:50,602 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 16:36:50,602 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 16:36:50,602 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 16:36:50,602 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 16:36:50,602 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 16:36:50,603 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 16:36:50,603 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,603 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,603 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 16:36:50,605 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,606 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 16:36:50,607 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,608 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,609 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,612 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 16:36:50,612 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 16:36:50,613 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 16:36:50,614 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 16:36:50,614 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 16:36:50,615 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 16:36:50,615 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,615 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,615 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,615 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,615 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 16:36:50,616 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,616 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,618 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 16:36:50,618 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 16:36:50,619 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 16:36:50,619 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 16:36:50,619 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 16:36:50,619 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 16:36:50,619 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,620 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 16:36:50,621 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 16:36:50,622 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 16:36:50,622 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 16:36:50,622 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 16:36:50,622 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 16:36:50,622 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 16:36:50,622 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 16:36:50,622 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse8 (<= ~a10~0 |old(~a10~0)|)) (.cse10 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse1 (not (<= 9 |old(~a19~0)|))) (.cse2 (<= 9 ~a19~0)) (.cse6 (not (<= |old(~a19~0)| 8))) (.cse9 (not (< |old(~a19~0)| 10))) (.cse0 (not (<= |old(~a1~0)| 23))) (.cse3 (<= ~a1~0 23)) (.cse5 (and .cse8 (<= 8 ~a19~0) .cse10)) (.cse7 (not (<= 8 |old(~a19~0)|))) (.cse4 (not (<= |old(~a10~0)| 1)))) (and (or .cse0 .cse1 (and .cse2 .cse3) .cse4) (or .cse5 .cse6 .cse7) (or .cse8 .cse6 (not (<= |old(~a10~0)| 2))) (or .cse9 .cse1 (and .cse2 .cse8 (< ~a19~0 10))) (or .cse0 .cse6 .cse10) (or (not (<= |old(~a10~0)| 3)) .cse6 (and .cse10 (<= ~a10~0 3))) (or .cse9 .cse0 .cse3) (or .cse5 .cse7 .cse4)))) [2020-07-21 16:36:50,623 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 16:36:50,623 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 16:36:50,623 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 16:36:50,623 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,625 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,626 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,626 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,626 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,626 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,626 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 16:36:50,626 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 16:36:50,626 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 16:36:50,627 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,628 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 16:36:50,629 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 16:36:50,630 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 16:36:50,630 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 16:36:50,630 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 16:36:50,630 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,630 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 16:36:50,631 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 16:36:50,632 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 16:36:50,633 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= 9 ~a19~0) (<= ~a1~0 23) (< ~a19~0 10)) [2020-07-21 16:36:50,633 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 16:36:50,633 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 16:36:50,633 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= ~a1~0 23) (< ~a19~0 10))) [2020-07-21 16:36:50,633 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 16:36:50,633 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (<= ~a10~0 1) (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 8 ~a19~0) (< ~a19~0 10)) (and .cse0 (<= ~a10~0 3)) (and .cse0 (<= ~a1~0 23)))) [2020-07-21 16:36:50,634 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 16:36:50,634 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 16:36:50,634 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 8))) (or (<= ~a10~0 1) (not (< |old(~a19~0)| 10)) (not (<= |old(~a1~0)| 23)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and (<= 8 ~a19~0) (< ~a19~0 10)) (and .cse0 (<= ~a10~0 3)) (and .cse0 (<= ~a1~0 23)))) [2020-07-21 16:36:50,634 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 16:36:50,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:36:50 BoogieIcfgContainer [2020-07-21 16:36:50,662 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 16:36:50,664 INFO L168 Benchmark]: Toolchain (without parser) took 13913.22 ms. Allocated memory was 137.9 MB in the beginning and 431.0 MB in the end (delta: 293.1 MB). Free memory was 101.2 MB in the beginning and 292.4 MB in the end (delta: -191.2 MB). Peak memory consumption was 261.3 MB. Max. memory is 7.1 GB. [2020-07-21 16:36:50,668 INFO L168 Benchmark]: CDTParser took 0.53 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 16:36:50,671 INFO L168 Benchmark]: CACSL2BoogieTranslator took 893.04 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 100.7 MB in the beginning and 170.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-07-21 16:36:50,671 INFO L168 Benchmark]: Boogie Preprocessor took 143.88 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 165.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 16:36:50,672 INFO L168 Benchmark]: RCFGBuilder took 1366.28 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 181.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. [2020-07-21 16:36:50,674 INFO L168 Benchmark]: TraceAbstraction took 11502.80 ms. Allocated memory was 235.9 MB in the beginning and 431.0 MB in the end (delta: 195.0 MB). Free memory was 181.4 MB in the beginning and 292.4 MB in the end (delta: -111.0 MB). Peak memory consumption was 243.5 MB. Max. memory is 7.1 GB. [2020-07-21 16:36:50,685 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.53 ms. Allocated memory is still 137.9 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 893.04 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 100.7 MB in the beginning and 170.4 MB in the end (delta: -69.6 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 143.88 ms. Allocated memory is still 203.9 MB. Free memory was 170.4 MB in the beginning and 165.4 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1366.28 ms. Allocated memory was 203.9 MB in the beginning and 235.9 MB in the end (delta: 32.0 MB). Free memory was 165.4 MB in the beginning and 181.4 MB in the end (delta: -16.0 MB). Peak memory consumption was 84.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11502.80 ms. Allocated memory was 235.9 MB in the beginning and 431.0 MB in the end (delta: 195.0 MB). Free memory was 181.4 MB in the beginning and 292.4 MB in the end (delta: -111.0 MB). Peak memory consumption was 243.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 100]: 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 Derived loop invariant: ((((((a10 <= 1 || !(\old(a19) < 10)) || !(\old(a1) <= 23)) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || (8 <= a19 && a19 < 10)) || (a19 <= 8 && a10 <= 3)) || (a19 <= 8 && a1 <= 23) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.4s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 316 SDtfs, 1658 SDslu, 142 SDs, 0 SdLazy, 3854 SolverSat, 736 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1653 GetRequests, 1627 SyntacticMatches, 3 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1764occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 467 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 66 PreInvPairs, 112 NumberOfFragments, 263 HoareAnnotationTreeSize, 66 FomulaSimplifications, 1240 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 884 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1254 NumberOfCodeBlocks, 1254 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1640 ConstructedInterpolants, 0 QuantifiedInterpolants, 626882 SizeOfPredicates, 13 NumberOfNonLiveVariables, 2455 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 910/918 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...