/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 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:11:25,564 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:11:25,566 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:11:25,577 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:11:25,578 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:11:25,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:11:25,580 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:11:25,582 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:11:25,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:11:25,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:11:25,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:11:25,586 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:11:25,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:11:25,588 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:11:25,589 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:11:25,590 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:11:25,590 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:11:25,591 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:11:25,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:11:25,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:11:25,597 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:11:25,598 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:11:25,599 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:11:25,600 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:11:25,603 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:11:25,610 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:11:25,611 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:11:25,612 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:11:25,613 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:11:25,627 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:11:25,628 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:11:25,629 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:11:25,629 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:11:25,629 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:11:25,629 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:11:25,630 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:11:25,630 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:11:25,630 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:11:25,630 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:11:25,630 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:11:25,631 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:11:25,631 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:11:25,631 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:11:25,631 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:11:25,631 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:11:25,632 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:11:25,632 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:11:25,632 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:11:25,632 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:11:25,632 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:11:25,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:11:25,633 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:11:25,633 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:11:25,633 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:11:25,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:11:25,634 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:25,634 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:11:25,634 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:11:25,634 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 -> 4 [2020-07-20 14:11:25,934 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:11:25,952 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:11:25,955 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:11:25,957 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:11:25,959 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:11:25,961 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-07-20 14:11:26,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01489ed09/6b12b596757141a4ab2995cc3e762e45/FLAG34a7b0c19 [2020-07-20 14:11:26,603 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:11:26,604 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-07-20 14:11:26,616 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01489ed09/6b12b596757141a4ab2995cc3e762e45/FLAG34a7b0c19 [2020-07-20 14:11:26,843 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01489ed09/6b12b596757141a4ab2995cc3e762e45 [2020-07-20 14:11:26,851 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:11:26,854 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:11:26,855 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:11:26,855 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:11:26,858 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:11:26,859 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:11:26" (1/1) ... [2020-07-20 14:11:26,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e2e4e1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:26, skipping insertion in model container [2020-07-20 14:11:26,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:11:26" (1/1) ... [2020-07-20 14:11:26,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:11:26,921 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:11:27,383 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:11:27,390 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:11:27,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:11:27,655 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:11:27,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27 WrapperNode [2020-07-20 14:11:27,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:11:27,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:11:27,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:11:27,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:11:27,666 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... [2020-07-20 14:11:27,667 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... [2020-07-20 14:11:27,686 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... [2020-07-20 14:11:27,687 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... [2020-07-20 14:11:27,732 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... [2020-07-20 14:11:27,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... [2020-07-20 14:11:27,758 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... [2020-07-20 14:11:27,769 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:11:27,770 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:11:27,770 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:11:27,770 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:11:27,771 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:11:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:11:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:11:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:11:27,828 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:11:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:11:27,828 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:11:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:11:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:11:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:11:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:11:27,829 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:11:29,124 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:11:29,124 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:11:29,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:11:29 BoogieIcfgContainer [2020-07-20 14:11:29,131 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:11:29,132 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:11:29,132 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:11:29,135 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:11:29,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:11:26" (1/3) ... [2020-07-20 14:11:29,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54854c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:11:29, skipping insertion in model container [2020-07-20 14:11:29,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:11:27" (2/3) ... [2020-07-20 14:11:29,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54854c42 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:11:29, skipping insertion in model container [2020-07-20 14:11:29,137 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:11:29" (3/3) ... [2020-07-20 14:11:29,139 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-07-20 14:11:29,149 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:11:29,157 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:11:29,170 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:11:29,195 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:11:29,196 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:11:29,196 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:11:29,196 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:11:29,196 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:11:29,197 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:11:29,197 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:11:29,197 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:11:29,219 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states. [2020-07-20 14:11:29,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 14:11:29,226 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:29,228 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] [2020-07-20 14:11:29,228 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:29,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:29,234 INFO L82 PathProgramCache]: Analyzing trace with hash -736368013, now seen corresponding path program 1 times [2020-07-20 14:11:29,243 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:29,243 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1258554958] [2020-07-20 14:11:29,244 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:29,361 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:29,361 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:29,364 INFO L263 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:11:29,371 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:29,428 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:29,428 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:29,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1258554958] [2020-07-20 14:11:29,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:29,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:29,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [777979299] [2020-07-20 14:11:29,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:29,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:29,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:29,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:29,453 INFO L87 Difference]: Start difference. First operand 254 states. Second operand 3 states. [2020-07-20 14:11:30,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:30,663 INFO L93 Difference]: Finished difference Result 688 states and 1223 transitions. [2020-07-20 14:11:30,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:30,665 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 40 [2020-07-20 14:11:30,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:30,682 INFO L225 Difference]: With dead ends: 688 [2020-07-20 14:11:30,682 INFO L226 Difference]: Without dead ends: 372 [2020-07-20 14:11:30,689 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:30,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2020-07-20 14:11:30,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 372. [2020-07-20 14:11:30,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 372 states. [2020-07-20 14:11:30,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 560 transitions. [2020-07-20 14:11:30,767 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 560 transitions. Word has length 40 [2020-07-20 14:11:30,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:30,767 INFO L479 AbstractCegarLoop]: Abstraction has 372 states and 560 transitions. [2020-07-20 14:11:30,767 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:30,768 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 560 transitions. [2020-07-20 14:11:30,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-07-20 14:11:30,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:30,776 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:11:30,990 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:30,992 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:30,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:30,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1103541129, now seen corresponding path program 1 times [2020-07-20 14:11:30,993 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:30,993 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273476315] [2020-07-20 14:11:30,994 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:31,076 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:31,077 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:31,078 INFO L263 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:11:31,083 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:31,162 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:31,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:31,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273476315] [2020-07-20 14:11:31,163 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:31,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:11:31,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591438842] [2020-07-20 14:11:31,166 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:11:31,167 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:31,167 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:11:31,167 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:11:31,168 INFO L87 Difference]: Start difference. First operand 372 states and 560 transitions. Second operand 5 states. [2020-07-20 14:11:32,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:32,511 INFO L93 Difference]: Finished difference Result 1124 states and 1723 transitions. [2020-07-20 14:11:32,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:11:32,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 119 [2020-07-20 14:11:32,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:32,518 INFO L225 Difference]: With dead ends: 1124 [2020-07-20 14:11:32,519 INFO L226 Difference]: Without dead ends: 758 [2020-07-20 14:11:32,520 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:11:32,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 758 states. [2020-07-20 14:11:32,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 758 to 744. [2020-07-20 14:11:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 744 states. [2020-07-20 14:11:32,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 744 states to 744 states and 1012 transitions. [2020-07-20 14:11:32,574 INFO L78 Accepts]: Start accepts. Automaton has 744 states and 1012 transitions. Word has length 119 [2020-07-20 14:11:32,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:32,575 INFO L479 AbstractCegarLoop]: Abstraction has 744 states and 1012 transitions. [2020-07-20 14:11:32,575 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:11:32,576 INFO L276 IsEmpty]: Start isEmpty. Operand 744 states and 1012 transitions. [2020-07-20 14:11:32,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-20 14:11:32,578 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:32,579 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:11:32,791 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:32,793 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:32,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:32,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1466730177, now seen corresponding path program 1 times [2020-07-20 14:11:32,795 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:32,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [27251409] [2020-07-20 14:11:32,796 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:32,876 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:32,877 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:32,878 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:11:32,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:32,935 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:32,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:32,936 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [27251409] [2020-07-20 14:11:32,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:32,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:32,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576226494] [2020-07-20 14:11:32,938 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:32,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:32,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:32,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:32,939 INFO L87 Difference]: Start difference. First operand 744 states and 1012 transitions. Second operand 3 states. [2020-07-20 14:11:33,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:33,889 INFO L93 Difference]: Finished difference Result 1848 states and 2562 transitions. [2020-07-20 14:11:33,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:33,890 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 123 [2020-07-20 14:11:33,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:33,897 INFO L225 Difference]: With dead ends: 1848 [2020-07-20 14:11:33,897 INFO L226 Difference]: Without dead ends: 1110 [2020-07-20 14:11:33,899 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:33,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1110 states. [2020-07-20 14:11:33,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1110 to 1110. [2020-07-20 14:11:33,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1110 states. [2020-07-20 14:11:33,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1110 states to 1110 states and 1468 transitions. [2020-07-20 14:11:33,944 INFO L78 Accepts]: Start accepts. Automaton has 1110 states and 1468 transitions. Word has length 123 [2020-07-20 14:11:33,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:33,945 INFO L479 AbstractCegarLoop]: Abstraction has 1110 states and 1468 transitions. [2020-07-20 14:11:33,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:33,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1110 states and 1468 transitions. [2020-07-20 14:11:33,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-07-20 14:11:33,949 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:33,950 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:11:34,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:34,163 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:34,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:34,164 INFO L82 PathProgramCache]: Analyzing trace with hash 684502626, now seen corresponding path program 1 times [2020-07-20 14:11:34,164 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:34,165 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1084863942] [2020-07-20 14:11:34,165 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:34,255 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:34,256 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:34,257 INFO L263 TraceCheckSpWp]: Trace formula consists of 294 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:11:34,260 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:34,299 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:34,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:34,299 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1084863942] [2020-07-20 14:11:34,299 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:34,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:34,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587167436] [2020-07-20 14:11:34,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:34,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:34,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:34,301 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:34,301 INFO L87 Difference]: Start difference. First operand 1110 states and 1468 transitions. Second operand 3 states. [2020-07-20 14:11:35,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:35,209 INFO L93 Difference]: Finished difference Result 2398 states and 3253 transitions. [2020-07-20 14:11:35,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:35,209 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 152 [2020-07-20 14:11:35,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:35,217 INFO L225 Difference]: With dead ends: 2398 [2020-07-20 14:11:35,217 INFO L226 Difference]: Without dead ends: 1294 [2020-07-20 14:11:35,220 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 150 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:35,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2020-07-20 14:11:35,253 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1294. [2020-07-20 14:11:35,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1294 states. [2020-07-20 14:11:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1294 states to 1294 states and 1740 transitions. [2020-07-20 14:11:35,260 INFO L78 Accepts]: Start accepts. Automaton has 1294 states and 1740 transitions. Word has length 152 [2020-07-20 14:11:35,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:35,261 INFO L479 AbstractCegarLoop]: Abstraction has 1294 states and 1740 transitions. [2020-07-20 14:11:35,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:35,261 INFO L276 IsEmpty]: Start isEmpty. Operand 1294 states and 1740 transitions. [2020-07-20 14:11:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2020-07-20 14:11:35,265 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:35,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:11:35,479 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:35,480 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:35,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1787764330, now seen corresponding path program 1 times [2020-07-20 14:11:35,480 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:35,481 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [188394596] [2020-07-20 14:11:35,481 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:35,575 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:35,575 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:35,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 322 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:11:35,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:35,667 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:35,668 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:35,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [188394596] [2020-07-20 14:11:35,668 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:35,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:11:35,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599226840] [2020-07-20 14:11:35,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:11:35,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:35,671 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:11:35,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:11:35,671 INFO L87 Difference]: Start difference. First operand 1294 states and 1740 transitions. Second operand 5 states. [2020-07-20 14:11:36,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:36,953 INFO L93 Difference]: Finished difference Result 3358 states and 4808 transitions. [2020-07-20 14:11:36,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:11:36,957 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 180 [2020-07-20 14:11:36,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:36,971 INFO L225 Difference]: With dead ends: 3358 [2020-07-20 14:11:36,971 INFO L226 Difference]: Without dead ends: 2070 [2020-07-20 14:11:36,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 176 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:11:36,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2070 states. [2020-07-20 14:11:37,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2070 to 2040. [2020-07-20 14:11:37,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2040 states. [2020-07-20 14:11:37,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2040 states to 2040 states and 2712 transitions. [2020-07-20 14:11:37,037 INFO L78 Accepts]: Start accepts. Automaton has 2040 states and 2712 transitions. Word has length 180 [2020-07-20 14:11:37,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:37,038 INFO L479 AbstractCegarLoop]: Abstraction has 2040 states and 2712 transitions. [2020-07-20 14:11:37,038 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:11:37,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2040 states and 2712 transitions. [2020-07-20 14:11:37,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-07-20 14:11:37,042 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:37,043 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 14:11:37,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:37,256 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:37,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:37,257 INFO L82 PathProgramCache]: Analyzing trace with hash -1076977575, now seen corresponding path program 1 times [2020-07-20 14:11:37,258 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:37,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1660378837] [2020-07-20 14:11:37,260 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:37,368 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:37,368 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:37,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 410 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:11:37,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:37,470 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:37,471 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:11:37,582 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 140 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:11:37,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1660378837] [2020-07-20 14:11:37,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:11:37,583 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 14:11:37,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898649513] [2020-07-20 14:11:37,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:11:37,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:37,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:11:37,585 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:11:37,585 INFO L87 Difference]: Start difference. First operand 2040 states and 2712 transitions. Second operand 7 states. [2020-07-20 14:11:39,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:39,754 INFO L93 Difference]: Finished difference Result 5444 states and 7429 transitions. [2020-07-20 14:11:39,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:11:39,755 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-07-20 14:11:39,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:39,777 INFO L225 Difference]: With dead ends: 5444 [2020-07-20 14:11:39,778 INFO L226 Difference]: Without dead ends: 3410 [2020-07-20 14:11:39,789 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 451 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:11:39,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3410 states. [2020-07-20 14:11:39,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3410 to 3166. [2020-07-20 14:11:39,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3166 states. [2020-07-20 14:11:39,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 3994 transitions. [2020-07-20 14:11:39,888 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 3994 transitions. Word has length 228 [2020-07-20 14:11:39,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:39,889 INFO L479 AbstractCegarLoop]: Abstraction has 3166 states and 3994 transitions. [2020-07-20 14:11:39,889 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:11:39,889 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 3994 transitions. [2020-07-20 14:11:39,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2020-07-20 14:11:39,897 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:39,898 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 14:11:40,102 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:40,103 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:40,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:40,103 INFO L82 PathProgramCache]: Analyzing trace with hash -1424742042, now seen corresponding path program 1 times [2020-07-20 14:11:40,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:40,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1507576633] [2020-07-20 14:11:40,104 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 [2020-07-20 14:11:40,227 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:40,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:40,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 440 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:11:40,232 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:40,307 INFO L134 CoverageAnalysis]: Checked inductivity of 171 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2020-07-20 14:11:40,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:40,308 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1507576633] [2020-07-20 14:11:40,308 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:40,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:40,308 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714902312] [2020-07-20 14:11:40,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:40,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:40,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:40,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:40,309 INFO L87 Difference]: Start difference. First operand 3166 states and 3994 transitions. Second operand 3 states. [2020-07-20 14:11:41,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:41,129 INFO L93 Difference]: Finished difference Result 4456 states and 5650 transitions. [2020-07-20 14:11:41,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:41,130 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 257 [2020-07-20 14:11:41,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:41,148 INFO L225 Difference]: With dead ends: 4456 [2020-07-20 14:11:41,148 INFO L226 Difference]: Without dead ends: 4454 [2020-07-20 14:11:41,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 255 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:41,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4454 states. [2020-07-20 14:11:41,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4454 to 3720. [2020-07-20 14:11:41,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3720 states. [2020-07-20 14:11:41,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3720 states to 3720 states and 4706 transitions. [2020-07-20 14:11:41,238 INFO L78 Accepts]: Start accepts. Automaton has 3720 states and 4706 transitions. Word has length 257 [2020-07-20 14:11:41,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:41,238 INFO L479 AbstractCegarLoop]: Abstraction has 3720 states and 4706 transitions. [2020-07-20 14:11:41,239 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:41,239 INFO L276 IsEmpty]: Start isEmpty. Operand 3720 states and 4706 transitions. [2020-07-20 14:11:41,245 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-07-20 14:11:41,245 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:11:41,246 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 14:11:41,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:41,461 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:11:41,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:11:41,462 INFO L82 PathProgramCache]: Analyzing trace with hash -205359855, now seen corresponding path program 1 times [2020-07-20 14:11:41,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:11:41,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373560914] [2020-07-20 14:11:41,462 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:41,579 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:11:41,579 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:11:41,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 445 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:11:41,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:11:41,712 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-07-20 14:11:41,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:11:41,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373560914] [2020-07-20 14:11:41,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:11:41,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:11:41,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941666057] [2020-07-20 14:11:41,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:11:41,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:11:41,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:11:41,715 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:41,715 INFO L87 Difference]: Start difference. First operand 3720 states and 4706 transitions. Second operand 3 states. [2020-07-20 14:11:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:11:42,619 INFO L93 Difference]: Finished difference Result 9080 states and 11636 transitions. [2020-07-20 14:11:42,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:11:42,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 264 [2020-07-20 14:11:42,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:11:42,625 INFO L225 Difference]: With dead ends: 9080 [2020-07-20 14:11:42,625 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:11:42,641 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 261 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:11:42,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:11:42,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:11:42,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:11:42,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:11:42,642 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 264 [2020-07-20 14:11:42,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:11:42,642 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:11:42,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:11:42,643 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:11:42,643 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:11:42,855 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:11:42,859 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:11:43,220 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 111 DAG size of output: 37 [2020-07-20 14:11:44,004 WARN L193 SmtUtils]: Spent 630.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 44 [2020-07-20 14:11:44,177 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:11:44,177 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a12~0 |old(~a12~0)|) (<= ~a15~0 |old(~a15~0)|) (<= |old(~a15~0)| ~a15~0)) [2020-07-20 14:11:44,177 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L432(lines 432 870) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L366(lines 366 870) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L235(lines 235 870) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 14:11:44,178 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 14:11:44,179 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 14:11:44,179 INFO L268 CegarLoopResult]: For program point L764(lines 764 870) no Hoare annotation was computed. [2020-07-20 14:11:44,179 INFO L268 CegarLoopResult]: For program point L632(lines 632 870) no Hoare annotation was computed. [2020-07-20 14:11:44,180 INFO L268 CegarLoopResult]: For program point L500(lines 500 870) no Hoare annotation was computed. [2020-07-20 14:11:44,180 INFO L268 CegarLoopResult]: For program point L831(lines 831 870) no Hoare annotation was computed. [2020-07-20 14:11:44,180 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,180 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,180 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,180 INFO L268 CegarLoopResult]: For program point L700(lines 700 870) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L568(lines 568 870) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L305(lines 305 870) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L438(lines 438 870) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L372(lines 372 870) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,181 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,182 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,182 INFO L268 CegarLoopResult]: For program point L241(lines 241 870) no Hoare annotation was computed. [2020-07-20 14:11:44,182 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 14:11:44,182 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 14:11:44,182 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 14:11:44,184 INFO L268 CegarLoopResult]: For program point L638(lines 638 870) no Hoare annotation was computed. [2020-07-20 14:11:44,185 INFO L268 CegarLoopResult]: For program point L506(lines 506 870) no Hoare annotation was computed. [2020-07-20 14:11:44,185 INFO L268 CegarLoopResult]: For program point L837(lines 837 870) no Hoare annotation was computed. [2020-07-20 14:11:44,185 INFO L268 CegarLoopResult]: For program point L771(lines 771 870) no Hoare annotation was computed. [2020-07-20 14:11:44,185 INFO L268 CegarLoopResult]: For program point L573(lines 573 870) no Hoare annotation was computed. [2020-07-20 14:11:44,186 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,186 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,186 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,186 INFO L268 CegarLoopResult]: For program point L706(lines 706 870) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L311(lines 311 870) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L444(lines 444 870) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L378(lines 378 870) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,187 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L247(lines 247 870) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L842(lines 842 870) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L644(lines 644 870) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L512(lines 512 870) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L777(lines 777 870) no Hoare annotation was computed. [2020-07-20 14:11:44,188 INFO L268 CegarLoopResult]: For program point L579(lines 579 870) no Hoare annotation was computed. [2020-07-20 14:11:44,189 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,189 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,189 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,189 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,189 INFO L268 CegarLoopResult]: For program point L712(lines 712 870) no Hoare annotation was computed. [2020-07-20 14:11:44,189 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 14:11:44,190 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 14:11:44,190 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 14:11:44,190 INFO L268 CegarLoopResult]: For program point L449(lines 449 870) no Hoare annotation was computed. [2020-07-20 14:11:44,190 INFO L268 CegarLoopResult]: For program point L317(lines 317 870) no Hoare annotation was computed. [2020-07-20 14:11:44,190 INFO L268 CegarLoopResult]: For program point L384(lines 384 870) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L252(lines 252 870) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L848(lines 848 870) no Hoare annotation was computed. [2020-07-20 14:11:44,191 INFO L268 CegarLoopResult]: For program point L650(lines 650 870) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L518(lines 518 870) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L783(lines 783 870) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L585(lines 585 870) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L718(lines 718 870) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L454(lines 454 870) no Hoare annotation was computed. [2020-07-20 14:11:44,192 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 14:11:44,193 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 14:11:44,193 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 14:11:44,193 INFO L268 CegarLoopResult]: For program point L323(lines 323 870) no Hoare annotation was computed. [2020-07-20 14:11:44,193 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 872) the Hoare annotation is: (let ((.cse4 (<= ~a12~0 |old(~a12~0)|)) (.cse5 (<= ~a15~0 |old(~a15~0)|)) (.cse7 (<= |old(~a15~0)| ~a15~0))) (let ((.cse9 (not (<= |old(~a21~0)| 7))) (.cse6 (<= ~a21~0 7)) (.cse1 (<= 9 ~a21~0)) (.cse8 (not (<= |old(~a15~0)| 8))) (.cse2 (not (<= 9 |old(~a21~0)|))) (.cse3 (and .cse4 .cse5 .cse7)) (.cse0 (not (< 11 |old(~a12~0)|)))) (and (or (not (<= 10 |old(~a21~0)|)) (<= 10 ~a21~0)) (or .cse0 .cse1 .cse2) (or .cse3 .cse0) (or (and .cse4 .cse5 .cse6 .cse7) .cse8 .cse9) (or .cse0 .cse9 .cse6) (or (and .cse4 .cse5 .cse1 .cse7) .cse8 .cse2) (or .cse3 (not (<= 7 |old(~a15~0)|))) (or (< 11 ~a12~0) .cse0)))) [2020-07-20 14:11:44,193 INFO L268 CegarLoopResult]: For program point L390(lines 390 870) no Hoare annotation was computed. [2020-07-20 14:11:44,193 INFO L268 CegarLoopResult]: For program point L258(lines 258 870) no Hoare annotation was computed. [2020-07-20 14:11:44,193 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,194 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,194 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,194 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 14:11:44,194 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 14:11:44,194 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 14:11:44,194 INFO L268 CegarLoopResult]: For program point L854(lines 854 870) no Hoare annotation was computed. [2020-07-20 14:11:44,195 INFO L268 CegarLoopResult]: For program point L656(lines 656 870) no Hoare annotation was computed. [2020-07-20 14:11:44,195 INFO L268 CegarLoopResult]: For program point L524(lines 524 870) no Hoare annotation was computed. [2020-07-20 14:11:44,195 INFO L268 CegarLoopResult]: For program point L789(lines 789 870) no Hoare annotation was computed. [2020-07-20 14:11:44,195 INFO L268 CegarLoopResult]: For program point L591(lines 591 870) no Hoare annotation was computed. [2020-07-20 14:11:44,195 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,195 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,195 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L724(lines 724 870) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L460(lines 460 870) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L329(lines 329 870) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L396(lines 396 870) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L264(lines 264 870) no Hoare annotation was computed. [2020-07-20 14:11:44,196 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L859(lines 859 870) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L662(lines 662 870) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L530(lines 530 870) no Hoare annotation was computed. [2020-07-20 14:11:44,197 INFO L268 CegarLoopResult]: For program point L795(lines 795 870) no Hoare annotation was computed. [2020-07-20 14:11:44,198 INFO L268 CegarLoopResult]: For program point L597(lines 597 870) no Hoare annotation was computed. [2020-07-20 14:11:44,198 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,198 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,198 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L730(lines 730 870) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L467(lines 467 870) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L335(lines 335 870) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L269(lines 269 870) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L402(lines 402 870) no Hoare annotation was computed. [2020-07-20 14:11:44,199 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L865(lines 865 870) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L668(lines 668 870) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L536(lines 536 870) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L801(lines 801 870) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L735(lines 735 870) no Hoare annotation was computed. [2020-07-20 14:11:44,200 INFO L268 CegarLoopResult]: For program point L603(lines 603 870) no Hoare annotation was computed. [2020-07-20 14:11:44,202 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 106) no Hoare annotation was computed. [2020-07-20 14:11:44,202 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,202 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,202 INFO L268 CegarLoopResult]: For program point L472(lines 472 870) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L341(lines 341 870) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L275(lines 275 870) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L408(lines 408 870) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L541(lines 541 870) no Hoare annotation was computed. [2020-07-20 14:11:44,203 INFO L268 CegarLoopResult]: For program point L211(lines 211 870) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L674(lines 674 870) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L807(lines 807 870) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L741(lines 741 870) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L609(lines 609 870) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L478(lines 478 870) no Hoare annotation was computed. [2020-07-20 14:11:44,204 INFO L268 CegarLoopResult]: For program point L280(lines 280 870) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L677(lines 677 870) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L347(lines 347 870) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L414(lines 414 870) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,205 INFO L268 CegarLoopResult]: For program point L547(lines 547 870) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L217(lines 217 870) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L747(lines 747 870) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L615(lines 615 870) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 14:11:44,206 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L814(lines 814 870) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L484(lines 484 870) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L286(lines 286 870) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L683(lines 683 870) no Hoare annotation was computed. [2020-07-20 14:11:44,207 INFO L268 CegarLoopResult]: For program point L353(lines 353 870) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L552(lines 552 870) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L420(lines 420 870) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L223(lines 223 870) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 14:11:44,208 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L752(lines 752 870) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L819(lines 819 870) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L621(lines 621 870) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L555(lines 555 870) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L688(lines 688 870) no Hoare annotation was computed. [2020-07-20 14:11:44,209 INFO L268 CegarLoopResult]: For program point L490(lines 490 870) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L359(lines 359 870) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L293(lines 293 870) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L426(lines 426 870) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,210 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L229(lines 229 870) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L758(lines 758 870) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L626(lines 626 870) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L825(lines 825 870) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L561(lines 561 870) no Hoare annotation was computed. [2020-07-20 14:11:44,211 INFO L268 CegarLoopResult]: For program point L495(lines 495 870) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 872) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L694(lines 694 870) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 14:11:44,212 INFO L268 CegarLoopResult]: For program point L299(lines 299 870) no Hoare annotation was computed. [2020-07-20 14:11:44,213 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:11:44,213 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= (+ ~a12~0 49) 0) (<= 7 ~a15~0) (<= ~a15~0 8) (<= ~a21~0 7)) [2020-07-20 14:11:44,213 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:11:44,214 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:11:44,214 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 874 890) the Hoare annotation is: (or (not (<= (+ |old(~a12~0)| 49) 0)) (and (<= ~a12~0 |old(~a12~0)|) (<= ~a15~0 |old(~a15~0)|) (<= ~a21~0 7) (<= |old(~a15~0)| ~a15~0)) (not (<= 7 |old(~a15~0)|)) (not (<= |old(~a15~0)| 8)) (not (<= |old(~a21~0)| 7))) [2020-07-20 14:11:44,214 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 874 890) no Hoare annotation was computed. [2020-07-20 14:11:44,215 INFO L264 CegarLoopResult]: At program point L888(line 888) the Hoare annotation is: (or (< 11 ~a12~0) (<= 7 ~a15~0) (not (<= (+ |old(~a12~0)| 49) 0)) (not (<= 7 |old(~a15~0)|)) (not (<= |old(~a15~0)| 8)) (not (<= |old(~a21~0)| 7)) (<= 9 ~a21~0) (<= ~a21~0 7)) [2020-07-20 14:11:44,215 INFO L268 CegarLoopResult]: For program point L888-1(line 888) no Hoare annotation was computed. [2020-07-20 14:11:44,215 INFO L268 CegarLoopResult]: For program point L885(line 885) no Hoare annotation was computed. [2020-07-20 14:11:44,215 INFO L264 CegarLoopResult]: At program point L880-2(lines 880 889) the Hoare annotation is: (or (< 11 ~a12~0) (<= 7 ~a15~0) (not (<= (+ |old(~a12~0)| 49) 0)) (not (<= 7 |old(~a15~0)|)) (not (<= |old(~a15~0)| 8)) (not (<= |old(~a21~0)| 7)) (<= 9 ~a21~0) (<= ~a21~0 7)) [2020-07-20 14:11:44,215 INFO L268 CegarLoopResult]: For program point L880-3(lines 874 890) no Hoare annotation was computed. [2020-07-20 14:11:44,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:11:44 BoogieIcfgContainer [2020-07-20 14:11:44,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:11:44,238 INFO L168 Benchmark]: Toolchain (without parser) took 17384.72 ms. Allocated memory was 140.0 MB in the beginning and 497.0 MB in the end (delta: 357.0 MB). Free memory was 100.1 MB in the beginning and 382.0 MB in the end (delta: -281.9 MB). Peak memory consumption was 314.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:11:44,241 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-20 14:11:44,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.52 ms. Allocated memory was 140.0 MB in the beginning and 206.0 MB in the end (delta: 66.1 MB). Free memory was 99.7 MB in the beginning and 168.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:11:44,244 INFO L168 Benchmark]: Boogie Preprocessor took 113.04 ms. Allocated memory is still 206.0 MB. Free memory was 168.9 MB in the beginning and 163.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-07-20 14:11:44,246 INFO L168 Benchmark]: RCFGBuilder took 1360.72 ms. Allocated memory was 206.0 MB in the beginning and 236.5 MB in the end (delta: 30.4 MB). Free memory was 163.5 MB in the beginning and 158.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:11:44,247 INFO L168 Benchmark]: TraceAbstraction took 15103.73 ms. Allocated memory was 236.5 MB in the beginning and 497.0 MB in the end (delta: 260.6 MB). Free memory was 158.0 MB in the beginning and 382.0 MB in the end (delta: -224.0 MB). Peak memory consumption was 276.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:11:44,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 140.0 MB. Free memory is still 119.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 801.52 ms. Allocated memory was 140.0 MB in the beginning and 206.0 MB in the end (delta: 66.1 MB). Free memory was 99.7 MB in the beginning and 168.9 MB in the end (delta: -69.2 MB). Peak memory consumption was 38.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.04 ms. Allocated memory is still 206.0 MB. Free memory was 168.9 MB in the beginning and 163.5 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1360.72 ms. Allocated memory was 206.0 MB in the beginning and 236.5 MB in the end (delta: 30.4 MB). Free memory was 163.5 MB in the beginning and 158.0 MB in the end (delta: 5.5 MB). Peak memory consumption was 82.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15103.73 ms. Allocated memory was 236.5 MB in the beginning and 497.0 MB in the end (delta: 260.6 MB). Free memory was 158.0 MB in the beginning and 382.0 MB in the end (delta: -224.0 MB). Peak memory consumption was 276.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 106]: 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: 880]: Loop Invariant Derived loop invariant: ((((((11 < a12 || 7 <= a15) || !(\old(a12) + 49 <= 0)) || !(7 <= \old(a15))) || !(\old(a15) <= 8)) || !(\old(a21) <= 7)) || 9 <= a21) || a21 <= 7 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 254 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.6s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1061 SDtfs, 2266 SDslu, 188 SDs, 0 SdLazy, 6264 SolverSat, 1186 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 6.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1589 GetRequests, 1567 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3720occurred 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, 1022 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 87 PreInvPairs, 147 NumberOfFragments, 235 HoareAnnotationTreeSize, 87 FomulaSimplifications, 4014 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 7 FomulaSimplificationsInter, 1179 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 1363 NumberOfCodeBlocks, 1363 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1582 ConstructedInterpolants, 0 QuantifiedInterpolants, 593618 SizeOfPredicates, 16 NumberOfNonLiveVariables, 2581 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 9 InterpolantComputations, 7 PerfectInterpolantSequences, 743/747 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...