/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_FUNCTIONS --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_label53.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 13:55:08,419 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 13:55:08,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 13:55:08,441 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 13:55:08,441 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 13:55:08,442 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 13:55:08,444 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 13:55:08,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 13:55:08,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 13:55:08,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 13:55:08,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 13:55:08,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 13:55:08,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 13:55:08,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 13:55:08,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 13:55:08,470 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 13:55:08,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 13:55:08,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 13:55:08,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 13:55:08,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 13:55:08,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 13:55:08,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 13:55:08,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 13:55:08,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 13:55:08,481 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 13:55:08,488 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 13:55:08,489 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 13:55:08,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 13:55:08,490 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 13:55:08,504 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 13:55:08,505 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 13:55:08,506 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 13:55:08,506 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 13:55:08,506 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 13:55:08,506 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 13:55:08,507 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 13:55:08,507 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 13:55:08,507 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 13:55:08,507 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 13:55:08,507 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 13:55:08,508 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 13:55:08,508 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 13:55:08,508 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 13:55:08,508 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 13:55:08,508 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 13:55:08,508 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 13:55:08,509 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 13:55:08,509 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 13:55:08,509 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 13:55:08,509 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 13:55:08,510 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 13:55:08,510 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 13:55:08,510 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 13:55:08,510 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 13:55:08,510 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 13:55:08,511 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:08,511 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 13:55:08,511 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 13:55:08,511 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_FUNCTIONS 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 13:55:08,787 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 13:55:08,806 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 13:55:08,810 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 13:55:08,811 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 13:55:08,813 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 13:55:08,815 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-07-21 13:55:08,889 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aba5ea7f/97f7839bdf184415bdef3fd72ca3878f/FLAG9d1157e51 [2020-07-21 13:55:09,478 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 13:55:09,478 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label53.c [2020-07-21 13:55:09,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aba5ea7f/97f7839bdf184415bdef3fd72ca3878f/FLAG9d1157e51 [2020-07-21 13:55:09,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5aba5ea7f/97f7839bdf184415bdef3fd72ca3878f [2020-07-21 13:55:09,755 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 13:55:09,758 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 13:55:09,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 13:55:09,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 13:55:09,763 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 13:55:09,764 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:09" (1/1) ... [2020-07-21 13:55:09,767 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@27edf361 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:09, skipping insertion in model container [2020-07-21 13:55:09,767 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:55:09" (1/1) ... [2020-07-21 13:55:09,775 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 13:55:09,828 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 13:55:10,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:55:10,222 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 13:55:10,463 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 13:55:10,483 INFO L208 MainTranslator]: Completed translation [2020-07-21 13:55:10,483 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10 WrapperNode [2020-07-21 13:55:10,484 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 13:55:10,485 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 13:55:10,485 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 13:55:10,485 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 13:55:10,497 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (1/1) ... [2020-07-21 13:55:10,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (1/1) ... [2020-07-21 13:55:10,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (1/1) ... [2020-07-21 13:55:10,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (1/1) ... [2020-07-21 13:55:10,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (1/1) ... [2020-07-21 13:55:10,568 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (1/1) ... [2020-07-21 13:55:10,575 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (1/1) ... [2020-07-21 13:55:10,585 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 13:55:10,585 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 13:55:10,585 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 13:55:10,585 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 13:55:10,586 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (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 13:55:10,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 13:55:10,670 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 13:55:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 13:55:10,671 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 13:55:10,671 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 13:55:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 13:55:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 13:55:10,672 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 13:55:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 13:55:10,673 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 13:55:10,674 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 13:55:12,075 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 13:55:12,076 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 13:55:12,085 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:55:12 BoogieIcfgContainer [2020-07-21 13:55:12,086 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 13:55:12,088 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 13:55:12,088 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 13:55:12,092 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 13:55:12,092 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:55:09" (1/3) ... [2020-07-21 13:55:12,093 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3719ee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:55:12, skipping insertion in model container [2020-07-21 13:55:12,093 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:55:10" (2/3) ... [2020-07-21 13:55:12,094 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3719ee24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:55:12, skipping insertion in model container [2020-07-21 13:55:12,094 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:55:12" (3/3) ... [2020-07-21 13:55:12,098 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label53.c [2020-07-21 13:55:12,109 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 13:55:12,121 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 13:55:12,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 13:55:12,174 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 13:55:12,175 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 13:55:12,175 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 13:55:12,175 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 13:55:12,175 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 13:55:12,176 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 13:55:12,176 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 13:55:12,176 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 13:55:12,203 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 13:55:12,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-21 13:55:12,219 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:12,220 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 13:55:12,220 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:12,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:12,227 INFO L82 PathProgramCache]: Analyzing trace with hash 253834415, now seen corresponding path program 1 times [2020-07-21 13:55:12,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:12,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [540982637] [2020-07-21 13:55:12,237 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 13:55:12,348 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:12,349 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:12,351 INFO L263 TraceCheckSpWp]: Trace formula consists of 148 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:55:12,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:12,423 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 13:55:12,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:12,425 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [540982637] [2020-07-21 13:55:12,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:12,426 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:12,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1105815161] [2020-07-21 13:55:12,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:12,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:12,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:12,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:12,455 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 13:55:13,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:13,547 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-21 13:55:13,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:13,552 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 48 [2020-07-21 13:55:13,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:13,582 INFO L225 Difference]: With dead ends: 586 [2020-07-21 13:55:13,582 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 13:55:13,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 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 13:55:13,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 13:55:13,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 13:55:13,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 13:55:13,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-21 13:55:13,712 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 48 [2020-07-21 13:55:13,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:13,713 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-21 13:55:13,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:13,713 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-21 13:55:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-07-21 13:55:13,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:13,719 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:13,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:13,926 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:13,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:13,928 INFO L82 PathProgramCache]: Analyzing trace with hash -384487862, now seen corresponding path program 1 times [2020-07-21 13:55:13,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:13,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506278518] [2020-07-21 13:55:13,929 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 13:55:14,017 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:14,018 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:14,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:55:14,025 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:14,086 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:14,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:14,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506278518] [2020-07-21 13:55:14,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:14,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:55:14,087 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783225304] [2020-07-21 13:55:14,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:55:14,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:14,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:55:14,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:55:14,092 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 5 states. [2020-07-21 13:55:15,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:15,114 INFO L93 Difference]: Finished difference Result 890 states and 1316 transitions. [2020-07-21 13:55:15,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 13:55:15,115 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 122 [2020-07-21 13:55:15,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:15,120 INFO L225 Difference]: With dead ends: 890 [2020-07-21 13:55:15,120 INFO L226 Difference]: Without dead ends: 602 [2020-07-21 13:55:15,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:55:15,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-21 13:55:15,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 590. [2020-07-21 13:55:15,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 590 states. [2020-07-21 13:55:15,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 590 states to 590 states and 775 transitions. [2020-07-21 13:55:15,167 INFO L78 Accepts]: Start accepts. Automaton has 590 states and 775 transitions. Word has length 122 [2020-07-21 13:55:15,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:15,167 INFO L479 AbstractCegarLoop]: Abstraction has 590 states and 775 transitions. [2020-07-21 13:55:15,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:55:15,168 INFO L276 IsEmpty]: Start isEmpty. Operand 590 states and 775 transitions. [2020-07-21 13:55:15,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-07-21 13:55:15,171 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:15,171 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:15,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:15,385 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:15,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:15,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1735493107, now seen corresponding path program 1 times [2020-07-21 13:55:15,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:15,388 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108390140] [2020-07-21 13:55:15,389 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 13:55:15,486 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:15,486 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:15,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 266 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:15,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:15,574 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:15,574 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:15,575 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108390140] [2020-07-21 13:55:15,575 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:15,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:15,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989827610] [2020-07-21 13:55:15,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:15,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:15,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:15,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:15,586 INFO L87 Difference]: Start difference. First operand 590 states and 775 transitions. Second operand 3 states. [2020-07-21 13:55:16,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:16,308 INFO L93 Difference]: Finished difference Result 1462 states and 1992 transitions. [2020-07-21 13:55:16,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:16,310 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 127 [2020-07-21 13:55:16,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:16,316 INFO L225 Difference]: With dead ends: 1462 [2020-07-21 13:55:16,316 INFO L226 Difference]: Without dead ends: 878 [2020-07-21 13:55:16,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 125 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 13:55:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 878 states. [2020-07-21 13:55:16,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 878 to 878. [2020-07-21 13:55:16,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 878 states. [2020-07-21 13:55:16,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1157 transitions. [2020-07-21 13:55:16,363 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1157 transitions. Word has length 127 [2020-07-21 13:55:16,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:16,364 INFO L479 AbstractCegarLoop]: Abstraction has 878 states and 1157 transitions. [2020-07-21 13:55:16,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:16,364 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1157 transitions. [2020-07-21 13:55:16,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-21 13:55:16,368 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:16,368 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:16,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:16,582 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:16,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:16,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1739497747, now seen corresponding path program 1 times [2020-07-21 13:55:16,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:16,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1720956587] [2020-07-21 13:55:16,584 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 13:55:16,672 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:16,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:16,674 INFO L263 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 13:55:16,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:16,755 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:16,755 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:16,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1720956587] [2020-07-21 13:55:16,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:16,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 13:55:16,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527922787] [2020-07-21 13:55:16,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 13:55:16,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:16,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 13:55:16,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 13:55:16,759 INFO L87 Difference]: Start difference. First operand 878 states and 1157 transitions. Second operand 5 states. [2020-07-21 13:55:17,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:17,708 INFO L93 Difference]: Finished difference Result 2370 states and 3201 transitions. [2020-07-21 13:55:17,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 13:55:17,708 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-07-21 13:55:17,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:17,719 INFO L225 Difference]: With dead ends: 2370 [2020-07-21 13:55:17,719 INFO L226 Difference]: Without dead ends: 1498 [2020-07-21 13:55:17,722 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 13:55:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1498 states. [2020-07-21 13:55:17,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1498 to 1470. [2020-07-21 13:55:17,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-07-21 13:55:17,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1802 transitions. [2020-07-21 13:55:17,775 INFO L78 Accepts]: Start accepts. Automaton has 1470 states and 1802 transitions. Word has length 143 [2020-07-21 13:55:17,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:17,776 INFO L479 AbstractCegarLoop]: Abstraction has 1470 states and 1802 transitions. [2020-07-21 13:55:17,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 13:55:17,776 INFO L276 IsEmpty]: Start isEmpty. Operand 1470 states and 1802 transitions. [2020-07-21 13:55:17,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-07-21 13:55:17,779 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:17,779 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 13:55:17,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:17,995 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:17,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:17,996 INFO L82 PathProgramCache]: Analyzing trace with hash -1035653954, now seen corresponding path program 1 times [2020-07-21 13:55:17,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:17,996 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1626010982] [2020-07-21 13:55:17,996 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 13:55:18,088 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:18,088 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:18,089 INFO L263 TraceCheckSpWp]: Trace formula consists of 279 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:18,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:18,142 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 41 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 13:55:18,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:18,143 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1626010982] [2020-07-21 13:55:18,143 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:18,143 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:18,143 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564747012] [2020-07-21 13:55:18,144 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:18,144 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:18,144 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:18,145 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:18,145 INFO L87 Difference]: Start difference. First operand 1470 states and 1802 transitions. Second operand 3 states. [2020-07-21 13:55:18,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:18,855 INFO L93 Difference]: Finished difference Result 3226 states and 4023 transitions. [2020-07-21 13:55:18,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:18,855 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 144 [2020-07-21 13:55:18,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:18,869 INFO L225 Difference]: With dead ends: 3226 [2020-07-21 13:55:18,869 INFO L226 Difference]: Without dead ends: 1762 [2020-07-21 13:55:18,876 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 142 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 13:55:18,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1762 states. [2020-07-21 13:55:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1762 to 1762. [2020-07-21 13:55:18,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1762 states. [2020-07-21 13:55:18,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1762 states to 1762 states and 2139 transitions. [2020-07-21 13:55:18,941 INFO L78 Accepts]: Start accepts. Automaton has 1762 states and 2139 transitions. Word has length 144 [2020-07-21 13:55:18,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:18,941 INFO L479 AbstractCegarLoop]: Abstraction has 1762 states and 2139 transitions. [2020-07-21 13:55:18,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 1762 states and 2139 transitions. [2020-07-21 13:55:18,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2020-07-21 13:55:18,951 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:18,952 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 13:55:19,165 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:19,166 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:19,167 INFO L82 PathProgramCache]: Analyzing trace with hash 782482950, now seen corresponding path program 1 times [2020-07-21 13:55:19,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:19,168 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [828726080] [2020-07-21 13:55:19,168 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 13:55:19,272 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:19,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:19,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 387 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:19,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:19,376 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 13:55:19,377 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:19,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [828726080] [2020-07-21 13:55:19,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:19,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:19,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482910676] [2020-07-21 13:55:19,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:19,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:19,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:19,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:19,380 INFO L87 Difference]: Start difference. First operand 1762 states and 2139 transitions. Second operand 3 states. [2020-07-21 13:55:20,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:20,034 INFO L93 Difference]: Finished difference Result 3806 states and 4699 transitions. [2020-07-21 13:55:20,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:20,038 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 215 [2020-07-21 13:55:20,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:20,051 INFO L225 Difference]: With dead ends: 3806 [2020-07-21 13:55:20,052 INFO L226 Difference]: Without dead ends: 2050 [2020-07-21 13:55:20,062 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 214 GetRequests, 213 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 13:55:20,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2050 states. [2020-07-21 13:55:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2050 to 2050. [2020-07-21 13:55:20,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2050 states. [2020-07-21 13:55:20,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2050 states to 2050 states and 2517 transitions. [2020-07-21 13:55:20,120 INFO L78 Accepts]: Start accepts. Automaton has 2050 states and 2517 transitions. Word has length 215 [2020-07-21 13:55:20,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:20,121 INFO L479 AbstractCegarLoop]: Abstraction has 2050 states and 2517 transitions. [2020-07-21 13:55:20,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:20,121 INFO L276 IsEmpty]: Start isEmpty. Operand 2050 states and 2517 transitions. [2020-07-21 13:55:20,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2020-07-21 13:55:20,126 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:20,126 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-07-21 13:55:20,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:20,342 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:20,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:20,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1468840372, now seen corresponding path program 1 times [2020-07-21 13:55:20,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:20,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989904862] [2020-07-21 13:55:20,343 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 13:55:20,449 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:20,449 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:20,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:20,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:20,524 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 13:55:20,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:20,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989904862] [2020-07-21 13:55:20,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:20,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:20,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487399838] [2020-07-21 13:55:20,526 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:20,526 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:20,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:20,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:20,527 INFO L87 Difference]: Start difference. First operand 2050 states and 2517 transitions. Second operand 3 states. [2020-07-21 13:55:21,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:21,183 INFO L93 Difference]: Finished difference Result 3206 states and 3989 transitions. [2020-07-21 13:55:21,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:21,183 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 231 [2020-07-21 13:55:21,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:21,200 INFO L225 Difference]: With dead ends: 3206 [2020-07-21 13:55:21,200 INFO L226 Difference]: Without dead ends: 3204 [2020-07-21 13:55:21,202 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 229 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 13:55:21,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3204 states. [2020-07-21 13:55:21,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3204 to 2775. [2020-07-21 13:55:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2775 states. [2020-07-21 13:55:21,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2775 states to 2775 states and 3490 transitions. [2020-07-21 13:55:21,286 INFO L78 Accepts]: Start accepts. Automaton has 2775 states and 3490 transitions. Word has length 231 [2020-07-21 13:55:21,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:21,287 INFO L479 AbstractCegarLoop]: Abstraction has 2775 states and 3490 transitions. [2020-07-21 13:55:21,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:21,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2775 states and 3490 transitions. [2020-07-21 13:55:21,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2020-07-21 13:55:21,294 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 13:55:21,294 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 13:55:21,508 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:21,509 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 13:55:21,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 13:55:21,509 INFO L82 PathProgramCache]: Analyzing trace with hash -1385670853, now seen corresponding path program 1 times [2020-07-21 13:55:21,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 13:55:21,510 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919196830] [2020-07-21 13:55:21,510 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 13:55:21,655 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 13:55:21,656 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 13:55:21,657 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 13:55:21,661 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 13:55:21,747 INFO L134 CoverageAnalysis]: Checked inductivity of 159 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-07-21 13:55:21,747 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 13:55:21,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919196830] [2020-07-21 13:55:21,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 13:55:21,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 13:55:21,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016941947] [2020-07-21 13:55:21,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 13:55:21,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 13:55:21,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 13:55:21,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 13:55:21,751 INFO L87 Difference]: Start difference. First operand 2775 states and 3490 transitions. Second operand 3 states. [2020-07-21 13:55:22,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 13:55:22,449 INFO L93 Difference]: Finished difference Result 5828 states and 7294 transitions. [2020-07-21 13:55:22,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 13:55:22,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 244 [2020-07-21 13:55:22,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 13:55:22,451 INFO L225 Difference]: With dead ends: 5828 [2020-07-21 13:55:22,451 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 13:55:22,463 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 243 GetRequests, 242 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 13:55:22,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 13:55:22,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 13:55:22,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 13:55:22,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 13:55:22,469 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 244 [2020-07-21 13:55:22,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 13:55:22,470 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 13:55:22,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 13:55:22,470 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 13:55:22,470 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 13:55:22,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 13:55:22,677 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 13:55:23,494 WARN L193 SmtUtils]: Spent 378.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 45 [2020-07-21 13:55:23,626 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:55:23,626 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 13:55:23,626 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:55:23,626 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 13:55:23,627 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,628 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,629 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,629 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,629 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 13:55:23,629 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 13:55:23,629 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 13:55:23,630 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 13:55:23,630 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 13:55:23,630 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 13:55:23,630 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 13:55:23,630 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 13:55:23,630 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 13:55:23,630 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 13:55:23,631 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 13:55:23,631 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 13:55:23,631 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 13:55:23,631 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 130) no Hoare annotation was computed. [2020-07-21 13:55:23,631 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 13:55:23,631 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,631 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 13:55:23,632 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,633 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 13:55:23,634 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,635 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,636 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 13:55:23,637 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,638 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 13:55:23,639 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 13:55:23,640 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse9 (<= ~a10~0 |old(~a10~0)|)) (.cse10 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse1 (and (<= 9 ~a19~0) .cse9 .cse10)) (.cse5 (not (<= |old(~a10~0)| 1))) (.cse0 (not (<= 9 |old(~a19~0)|))) (.cse6 (and .cse9 .cse10)) (.cse7 (not (<= |old(~a10~0)| 2))) (.cse8 (not (<= 4 |old(~a10~0)|))) (.cse3 (not (<= |old(~a1~0)| 23))) (.cse4 (<= ~a1~0 23)) (.cse2 (not (<= |old(~a19~0)| 9)))) (and (or .cse0 .cse1 .cse2) (or .cse3 .cse4 .cse5) (or (not (<= |old(~a19~0)| 6)) .cse6) (or .cse0 .cse1 .cse5) (or .cse3 .cse4 .cse2 .cse7) (or .cse3 .cse4 .cse0 .cse2) (or .cse6 .cse2 .cse7) (or .cse8 .cse2 (and .cse9 .cse10 (<= 4 ~a10~0))) (or .cse8 .cse3 .cse4 .cse2)))) [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,641 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 13:55:23,642 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,643 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,644 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 13:55:23,645 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 13:55:23,646 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 13:55:23,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 13:55:23,646 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (<= ~a1~0 23)) [2020-07-21 13:55:23,646 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 13:55:23,646 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 13:55:23,646 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (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 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-21 13:55:23,646 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:55:23,646 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (and .cse0 (<= 4 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) .cse0))) [2020-07-21 13:55:23,646 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 13:55:23,646 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 13:55:23,647 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (let ((.cse0 (<= ~a19~0 9))) (or (<= ~a10~0 1) (not (<= |old(~a1~0)| 23)) (<= ~a19~0 6) (and .cse0 (<= 4 ~a10~0)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (and .cse0 (<= ~a10~0 2)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) .cse0))) [2020-07-21 13:55:23,647 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 13:55:23,665 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:55:23 BoogieIcfgContainer [2020-07-21 13:55:23,665 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 13:55:23,668 INFO L168 Benchmark]: Toolchain (without parser) took 13911.28 ms. Allocated memory was 137.9 MB in the beginning and 378.5 MB in the end (delta: 240.6 MB). Free memory was 101.1 MB in the beginning and 117.7 MB in the end (delta: -16.5 MB). Peak memory consumption was 224.1 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:23,669 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 13:55:23,669 INFO L168 Benchmark]: CACSL2BoogieTranslator took 725.15 ms. Allocated memory was 137.9 MB in the beginning and 205.0 MB in the end (delta: 67.1 MB). Free memory was 100.7 MB in the beginning and 171.7 MB in the end (delta: -70.9 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:23,670 INFO L168 Benchmark]: Boogie Preprocessor took 100.28 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 166.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:23,671 INFO L168 Benchmark]: RCFGBuilder took 1501.07 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 166.7 MB in the beginning and 182.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:23,672 INFO L168 Benchmark]: TraceAbstraction took 11577.77 ms. Allocated memory was 236.5 MB in the beginning and 378.5 MB in the end (delta: 142.1 MB). Free memory was 182.0 MB in the beginning and 117.7 MB in the end (delta: 64.4 MB). Peak memory consumption was 206.4 MB. Max. memory is 7.1 GB. [2020-07-21 13:55:23,676 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 137.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 725.15 ms. Allocated memory was 137.9 MB in the beginning and 205.0 MB in the end (delta: 67.1 MB). Free memory was 100.7 MB in the beginning and 171.7 MB in the end (delta: -70.9 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.28 ms. Allocated memory is still 205.0 MB. Free memory was 171.7 MB in the beginning and 166.7 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1501.07 ms. Allocated memory was 205.0 MB in the beginning and 236.5 MB in the end (delta: 31.5 MB). Free memory was 166.7 MB in the beginning and 182.0 MB in the end (delta: -15.4 MB). Peak memory consumption was 84.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11577.77 ms. Allocated memory was 236.5 MB in the beginning and 378.5 MB in the end (delta: 142.1 MB). Free memory was 182.0 MB in the beginning and 117.7 MB in the end (delta: 64.4 MB). Peak memory consumption was 206.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 130]: 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(a1) <= 23)) || a19 <= 6) || (a19 <= 9 && 4 <= a10)) || !(\old(a10) <= 0)) || !(9 <= \old(a19))) || (a19 <= 9 && a10 <= 2)) || !(\old(a19) <= 9)) || (9 <= a19 && a19 <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 6.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.9s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 681 SDtfs, 1386 SDslu, 134 SDs, 0 SdLazy, 3432 SolverSat, 681 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1272 GetRequests, 1254 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2775occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 8 MinimizatonAttempts, 469 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 81 PreInvPairs, 123 NumberOfFragments, 285 HoareAnnotationTreeSize, 81 FomulaSimplifications, 1537 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 7 FomulaSimplificationsInter, 720 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 1274 NumberOfCodeBlocks, 1274 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 1266 ConstructedInterpolants, 0 QuantifiedInterpolants, 365908 SizeOfPredicates, 15 NumberOfNonLiveVariables, 2438 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 634/634 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...