/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/Problem02_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:06:35,857 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 14:06:35,885 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:06:35,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:06:35,888 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:06:35,890 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:06:35,891 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:06:35,892 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:06:35,894 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:06:35,896 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:06:35,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:06:35,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:06:35,901 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:06:35,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:06:35,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:06:35,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:06:35,916 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:06:35,917 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:06:35,918 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 14:06:35,934 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:06:35,934 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:06:35,936 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:06:35,936 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:06:35,936 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:06:35,937 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:06:35,937 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:06:35,937 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:06:35,937 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:06:35,937 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:06:35,938 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:06:35,938 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:06:35,938 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:06:35,938 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:06:35,938 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:06:35,939 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:06:35,939 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:06:35,939 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:06:35,939 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:06:35,939 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:06:35,940 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:06:35,940 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:06:35,940 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:06:35,940 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:06:35,940 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:06:35,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:06:35,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:35,941 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:06:35,941 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:06:35,941 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 14:06:36,252 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:06:36,275 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:06:36,279 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:06:36,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:06:36,286 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:06:36,287 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-07-20 14:06:36,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cae5847f1/b2b66f602bad4deb9e9950d502f9f7e2/FLAG9b1692643 [2020-07-20 14:06:37,057 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:06:37,058 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem02_label10.c [2020-07-20 14:06:37,070 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cae5847f1/b2b66f602bad4deb9e9950d502f9f7e2/FLAG9b1692643 [2020-07-20 14:06:37,306 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cae5847f1/b2b66f602bad4deb9e9950d502f9f7e2 [2020-07-20 14:06:37,318 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:06:37,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:06:37,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:06:37,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:06:37,328 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:06:37,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:06:37" (1/1) ... [2020-07-20 14:06:37,334 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b977c1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:37, skipping insertion in model container [2020-07-20 14:06:37,334 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:06:37" (1/1) ... [2020-07-20 14:06:37,345 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:06:37,409 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:06:37,860 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:06:37,866 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:06:38,116 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:06:38,147 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:06:38,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38 WrapperNode [2020-07-20 14:06:38,148 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:06:38,149 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:06:38,149 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:06:38,149 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:06:38,163 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (1/1) ... [2020-07-20 14:06:38,164 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (1/1) ... [2020-07-20 14:06:38,185 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (1/1) ... [2020-07-20 14:06:38,185 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (1/1) ... [2020-07-20 14:06:38,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (1/1) ... [2020-07-20 14:06:38,260 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (1/1) ... [2020-07-20 14:06:38,270 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (1/1) ... [2020-07-20 14:06:38,276 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:06:38,277 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:06:38,277 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:06:38,277 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:06:38,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (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 14:06:38,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:06:38,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:06:38,351 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 14:06:38,351 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:06:38,351 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 14:06:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:06:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 14:06:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 14:06:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:06:38,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:06:38,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:06:39,655 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:06:39,655 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:06:39,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:06:39 BoogieIcfgContainer [2020-07-20 14:06:39,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:06:39,664 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:06:39,664 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:06:39,667 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:06:39,668 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:06:37" (1/3) ... [2020-07-20 14:06:39,669 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c3056c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:06:39, skipping insertion in model container [2020-07-20 14:06:39,669 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:06:38" (2/3) ... [2020-07-20 14:06:39,670 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11c3056c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:06:39, skipping insertion in model container [2020-07-20 14:06:39,670 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:06:39" (3/3) ... [2020-07-20 14:06:39,672 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label10.c [2020-07-20 14:06:39,684 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:06:39,693 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:06:39,708 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:06:39,740 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:06:39,740 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:06:39,740 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:06:39,740 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:06:39,741 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:06:39,741 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:06:39,741 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:06:39,741 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:06:39,771 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states. [2020-07-20 14:06:39,786 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-07-20 14:06:39,787 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:39,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:39,789 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:39,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:39,796 INFO L82 PathProgramCache]: Analyzing trace with hash 898563457, now seen corresponding path program 1 times [2020-07-20 14:06:39,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:39,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827919334] [2020-07-20 14:06:39,807 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 14:06:40,025 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:40,025 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:40,029 INFO L263 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:06:40,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:40,164 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 14:06:40,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:06:40,166 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1827919334] [2020-07-20 14:06:40,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:06:40,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:06:40,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216644767] [2020-07-20 14:06:40,179 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:06:40,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:40,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:06:40,197 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:06:40,199 INFO L87 Difference]: Start difference. First operand 236 states. Second operand 3 states. [2020-07-20 14:06:41,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:41,338 INFO L93 Difference]: Finished difference Result 615 states and 1053 transitions. [2020-07-20 14:06:41,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:06:41,341 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 141 [2020-07-20 14:06:41,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:41,371 INFO L225 Difference]: With dead ends: 615 [2020-07-20 14:06:41,371 INFO L226 Difference]: Without dead ends: 317 [2020-07-20 14:06:41,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 139 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 14:06:41,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-07-20 14:06:41,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 317. [2020-07-20 14:06:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 317 states. [2020-07-20 14:06:41,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 478 transitions. [2020-07-20 14:06:41,508 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 478 transitions. Word has length 141 [2020-07-20 14:06:41,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:41,513 INFO L479 AbstractCegarLoop]: Abstraction has 317 states and 478 transitions. [2020-07-20 14:06:41,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:06:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 478 transitions. [2020-07-20 14:06:41,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-07-20 14:06:41,529 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:41,529 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:06:41,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:41,731 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:41,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:41,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1871287036, now seen corresponding path program 1 times [2020-07-20 14:06:41,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:41,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2015237731] [2020-07-20 14:06:41,732 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 14:06:41,864 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:41,864 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:41,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 363 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:06:41,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:42,003 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:06:42,004 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:06:42,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2015237731] [2020-07-20 14:06:42,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:06:42,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:06:42,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517001777] [2020-07-20 14:06:42,009 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:06:42,010 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:42,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:06:42,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:06:42,012 INFO L87 Difference]: Start difference. First operand 317 states and 478 transitions. Second operand 5 states. [2020-07-20 14:06:42,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:42,516 INFO L93 Difference]: Finished difference Result 629 states and 962 transitions. [2020-07-20 14:06:42,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 14:06:42,521 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 156 [2020-07-20 14:06:42,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:42,527 INFO L225 Difference]: With dead ends: 629 [2020-07-20 14:06:42,527 INFO L226 Difference]: Without dead ends: 318 [2020-07-20 14:06:42,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:06:42,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-07-20 14:06:42,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 308. [2020-07-20 14:06:42,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 308 states. [2020-07-20 14:06:42,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 435 transitions. [2020-07-20 14:06:42,551 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 435 transitions. Word has length 156 [2020-07-20 14:06:42,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:42,552 INFO L479 AbstractCegarLoop]: Abstraction has 308 states and 435 transitions. [2020-07-20 14:06:42,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:06:42,552 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 435 transitions. [2020-07-20 14:06:42,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-07-20 14:06:42,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:42,554 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:06:42,760 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:42,761 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:42,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:42,762 INFO L82 PathProgramCache]: Analyzing trace with hash -798836375, now seen corresponding path program 1 times [2020-07-20 14:06:42,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:42,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533172360] [2020-07-20 14:06:42,764 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 14:06:42,884 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:42,884 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:42,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 14:06:42,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:06:42,972 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:06:42,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [533172360] [2020-07-20 14:06:42,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:06:42,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:06:42,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955232017] [2020-07-20 14:06:42,975 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:06:42,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:42,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:06:42,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:06:42,976 INFO L87 Difference]: Start difference. First operand 308 states and 435 transitions. Second operand 5 states. [2020-07-20 14:06:43,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:43,895 INFO L93 Difference]: Finished difference Result 923 states and 1328 transitions. [2020-07-20 14:06:43,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:06:43,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 163 [2020-07-20 14:06:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:43,904 INFO L225 Difference]: With dead ends: 923 [2020-07-20 14:06:43,904 INFO L226 Difference]: Without dead ends: 621 [2020-07-20 14:06:43,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:06:43,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 621 states. [2020-07-20 14:06:43,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 621 to 605. [2020-07-20 14:06:43,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 605 states. [2020-07-20 14:06:43,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 764 transitions. [2020-07-20 14:06:43,953 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 764 transitions. Word has length 163 [2020-07-20 14:06:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:43,954 INFO L479 AbstractCegarLoop]: Abstraction has 605 states and 764 transitions. [2020-07-20 14:06:43,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:06:43,954 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 764 transitions. [2020-07-20 14:06:43,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-20 14:06:43,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:43,961 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:44,173 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:44,174 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:44,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:44,176 INFO L82 PathProgramCache]: Analyzing trace with hash -1395637775, now seen corresponding path program 1 times [2020-07-20 14:06:44,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:44,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [660517467] [2020-07-20 14:06:44,177 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 14:06:44,311 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:44,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:44,313 INFO L263 TraceCheckSpWp]: Trace formula consists of 374 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 14:06:44,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:44,398 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:06:44,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:06:44,399 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [660517467] [2020-07-20 14:06:44,399 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:06:44,400 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:06:44,400 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311846011] [2020-07-20 14:06:44,401 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 14:06:44,401 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:44,401 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 14:06:44,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 14:06:44,402 INFO L87 Difference]: Start difference. First operand 605 states and 764 transitions. Second operand 5 states. [2020-07-20 14:06:45,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:45,317 INFO L93 Difference]: Finished difference Result 1682 states and 2209 transitions. [2020-07-20 14:06:45,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:06:45,318 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-07-20 14:06:45,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:45,326 INFO L225 Difference]: With dead ends: 1682 [2020-07-20 14:06:45,326 INFO L226 Difference]: Without dead ends: 1083 [2020-07-20 14:06:45,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 14:06:45,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1083 states. [2020-07-20 14:06:45,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1083 to 919. [2020-07-20 14:06:45,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 919 states. [2020-07-20 14:06:45,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1162 transitions. [2020-07-20 14:06:45,370 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1162 transitions. Word has length 167 [2020-07-20 14:06:45,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:45,371 INFO L479 AbstractCegarLoop]: Abstraction has 919 states and 1162 transitions. [2020-07-20 14:06:45,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 14:06:45,371 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1162 transitions. [2020-07-20 14:06:45,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-20 14:06:45,375 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:45,375 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:06:45,585 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:45,586 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:45,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:45,587 INFO L82 PathProgramCache]: Analyzing trace with hash 1820888792, now seen corresponding path program 1 times [2020-07-20 14:06:45,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:45,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1087422018] [2020-07-20 14:06:45,589 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 14:06:45,697 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:45,697 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:45,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:06:45,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:45,768 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:06:45,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:06:45,862 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 32 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:06:45,862 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1087422018] [2020-07-20 14:06:45,863 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:06:45,863 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 14:06:45,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [448410961] [2020-07-20 14:06:45,864 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:06:45,864 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:45,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:06:45,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 14:06:45,865 INFO L87 Difference]: Start difference. First operand 919 states and 1162 transitions. Second operand 6 states. [2020-07-20 14:06:46,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:46,736 INFO L93 Difference]: Finished difference Result 1994 states and 2547 transitions. [2020-07-20 14:06:46,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 14:06:46,737 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 172 [2020-07-20 14:06:46,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:46,746 INFO L225 Difference]: With dead ends: 1994 [2020-07-20 14:06:46,747 INFO L226 Difference]: Without dead ends: 1081 [2020-07-20 14:06:46,752 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 338 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 14:06:46,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1081 states. [2020-07-20 14:06:46,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1081 to 1075. [2020-07-20 14:06:46,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1075 states. [2020-07-20 14:06:46,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1075 states to 1075 states and 1322 transitions. [2020-07-20 14:06:46,812 INFO L78 Accepts]: Start accepts. Automaton has 1075 states and 1322 transitions. Word has length 172 [2020-07-20 14:06:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:46,813 INFO L479 AbstractCegarLoop]: Abstraction has 1075 states and 1322 transitions. [2020-07-20 14:06:46,813 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:06:46,813 INFO L276 IsEmpty]: Start isEmpty. Operand 1075 states and 1322 transitions. [2020-07-20 14:06:46,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-07-20 14:06:46,823 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:46,824 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:47,037 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:47,038 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:47,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:47,039 INFO L82 PathProgramCache]: Analyzing trace with hash -2090900128, now seen corresponding path program 1 times [2020-07-20 14:06:47,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:47,040 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [9143930] [2020-07-20 14:06:47,041 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 14:06:47,293 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:47,294 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:47,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 433 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:06:47,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:47,359 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-07-20 14:06:47,360 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:06:47,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [9143930] [2020-07-20 14:06:47,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:06:47,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:06:47,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319921808] [2020-07-20 14:06:47,362 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:06:47,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:47,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:06:47,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:06:47,363 INFO L87 Difference]: Start difference. First operand 1075 states and 1322 transitions. Second operand 3 states. [2020-07-20 14:06:47,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:47,937 INFO L93 Difference]: Finished difference Result 2588 states and 3274 transitions. [2020-07-20 14:06:47,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:06:47,938 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 176 [2020-07-20 14:06:47,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:47,949 INFO L225 Difference]: With dead ends: 2588 [2020-07-20 14:06:47,949 INFO L226 Difference]: Without dead ends: 1219 [2020-07-20 14:06:47,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 174 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 14:06:47,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1219 states. [2020-07-20 14:06:47,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1219 to 1073. [2020-07-20 14:06:47,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1073 states. [2020-07-20 14:06:48,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1073 states to 1073 states and 1227 transitions. [2020-07-20 14:06:48,001 INFO L78 Accepts]: Start accepts. Automaton has 1073 states and 1227 transitions. Word has length 176 [2020-07-20 14:06:48,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:48,003 INFO L479 AbstractCegarLoop]: Abstraction has 1073 states and 1227 transitions. [2020-07-20 14:06:48,004 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:06:48,004 INFO L276 IsEmpty]: Start isEmpty. Operand 1073 states and 1227 transitions. [2020-07-20 14:06:48,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-07-20 14:06:48,009 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:48,010 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:06:48,227 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:48,228 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:48,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:48,229 INFO L82 PathProgramCache]: Analyzing trace with hash -1859280077, now seen corresponding path program 1 times [2020-07-20 14:06:48,229 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:48,230 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749366943] [2020-07-20 14:06:48,230 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 14:06:48,366 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:48,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:48,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 574 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:06:48,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:48,456 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-20 14:06:48,456 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:06:48,571 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-07-20 14:06:48,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749366943] [2020-07-20 14:06:48,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:06:48,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 14:06:48,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [174569494] [2020-07-20 14:06:48,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 14:06:48,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:48,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 14:06:48,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 14:06:48,573 INFO L87 Difference]: Start difference. First operand 1073 states and 1227 transitions. Second operand 7 states. [2020-07-20 14:06:49,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:49,414 INFO L93 Difference]: Finished difference Result 2444 states and 2851 transitions. [2020-07-20 14:06:49,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:06:49,415 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 233 [2020-07-20 14:06:49,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:49,423 INFO L225 Difference]: With dead ends: 2444 [2020-07-20 14:06:49,423 INFO L226 Difference]: Without dead ends: 1377 [2020-07-20 14:06:49,427 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 461 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 14:06:49,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1377 states. [2020-07-20 14:06:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1377 to 1367. [2020-07-20 14:06:49,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1367 states. [2020-07-20 14:06:49,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 1576 transitions. [2020-07-20 14:06:49,486 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 1576 transitions. Word has length 233 [2020-07-20 14:06:49,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:49,486 INFO L479 AbstractCegarLoop]: Abstraction has 1367 states and 1576 transitions. [2020-07-20 14:06:49,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 14:06:49,486 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 1576 transitions. [2020-07-20 14:06:49,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2020-07-20 14:06:49,492 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:06:49,493 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 14:06:49,706 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:49,707 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:06:49,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:06:49,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1544762519, now seen corresponding path program 1 times [2020-07-20 14:06:49,708 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:06:49,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [631472601] [2020-07-20 14:06:49,709 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 14:06:49,881 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:06:49,882 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:06:49,884 INFO L263 TraceCheckSpWp]: Trace formula consists of 501 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 14:06:49,887 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:06:49,946 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 103 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-20 14:06:49,947 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:06:49,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [631472601] [2020-07-20 14:06:49,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:06:49,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:06:49,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032151255] [2020-07-20 14:06:49,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:06:49,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:06:49,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:06:49,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:06:49,950 INFO L87 Difference]: Start difference. First operand 1367 states and 1576 transitions. Second operand 3 states. [2020-07-20 14:06:50,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:06:50,440 INFO L93 Difference]: Finished difference Result 2727 states and 3154 transitions. [2020-07-20 14:06:50,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:06:50,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 247 [2020-07-20 14:06:50,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:06:50,442 INFO L225 Difference]: With dead ends: 2727 [2020-07-20 14:06:50,442 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:06:50,447 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 246 GetRequests, 245 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 14:06:50,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:06:50,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:06:50,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:06:50,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:06:50,452 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 247 [2020-07-20 14:06:50,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:06:50,452 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:06:50,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:06:50,452 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:06:50,453 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:06:50,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:06:50,669 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:06:51,523 WARN L193 SmtUtils]: Spent 494.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 49 [2020-07-20 14:06:51,680 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-07-20 14:06:51,805 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 50 DAG size of output: 31 [2020-07-20 14:06:51,813 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:06:51,814 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a17~0 |old(~a17~0)|) (<= ~a28~0 |old(~a28~0)|) (= ~a19~0 |old(~a19~0)|)) [2020-07-20 14:06:51,814 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:06:51,814 INFO L268 CegarLoopResult]: For program point L564-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,814 INFO L268 CegarLoopResult]: For program point L531-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,814 INFO L268 CegarLoopResult]: For program point L498-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L465-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L432-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L234(lines 234 413) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L69(lines 69 413) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L565(line 565) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L532(line 532) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L499(line 499) no Hoare annotation was computed. [2020-07-20 14:06:51,815 INFO L268 CegarLoopResult]: For program point L466(line 466) no Hoare annotation was computed. [2020-07-20 14:06:51,816 INFO L268 CegarLoopResult]: For program point L433(line 433) no Hoare annotation was computed. [2020-07-20 14:06:51,816 INFO L268 CegarLoopResult]: For program point L202(lines 202 413) no Hoare annotation was computed. [2020-07-20 14:06:51,816 INFO L268 CegarLoopResult]: For program point L169(lines 169 413) no Hoare annotation was computed. [2020-07-20 14:06:51,816 INFO L268 CegarLoopResult]: For program point L368(lines 368 413) no Hoare annotation was computed. [2020-07-20 14:06:51,818 INFO L268 CegarLoopResult]: For program point L203(lines 203 210) no Hoare annotation was computed. [2020-07-20 14:06:51,818 INFO L268 CegarLoopResult]: For program point L203-2(lines 203 210) no Hoare annotation was computed. [2020-07-20 14:06:51,818 INFO L268 CegarLoopResult]: For program point L38(lines 38 413) no Hoare annotation was computed. [2020-07-20 14:06:51,819 INFO L268 CegarLoopResult]: For program point L567-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,819 INFO L268 CegarLoopResult]: For program point L534-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,819 INFO L268 CegarLoopResult]: For program point L501-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,827 INFO L268 CegarLoopResult]: For program point L468-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,827 INFO L268 CegarLoopResult]: For program point L402(lines 402 413) no Hoare annotation was computed. [2020-07-20 14:06:51,827 INFO L268 CegarLoopResult]: For program point L435-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,827 INFO L268 CegarLoopResult]: For program point L237(lines 237 413) no Hoare annotation was computed. [2020-07-20 14:06:51,828 INFO L268 CegarLoopResult]: For program point L568(line 568) no Hoare annotation was computed. [2020-07-20 14:06:51,828 INFO L268 CegarLoopResult]: For program point L535(line 535) no Hoare annotation was computed. [2020-07-20 14:06:51,828 INFO L268 CegarLoopResult]: For program point L502(line 502) no Hoare annotation was computed. [2020-07-20 14:06:51,828 INFO L268 CegarLoopResult]: For program point L469(line 469) no Hoare annotation was computed. [2020-07-20 14:06:51,828 INFO L268 CegarLoopResult]: For program point L436(line 436) no Hoare annotation was computed. [2020-07-20 14:06:51,828 INFO L268 CegarLoopResult]: For program point L337(lines 337 413) no Hoare annotation was computed. [2020-07-20 14:06:51,829 INFO L268 CegarLoopResult]: For program point L238(lines 238 246) no Hoare annotation was computed. [2020-07-20 14:06:51,829 INFO L268 CegarLoopResult]: For program point L238-2(lines 238 246) no Hoare annotation was computed. [2020-07-20 14:06:51,829 INFO L268 CegarLoopResult]: For program point L139(lines 139 413) no Hoare annotation was computed. [2020-07-20 14:06:51,829 INFO L268 CegarLoopResult]: For program point L106(lines 106 413) no Hoare annotation was computed. [2020-07-20 14:06:51,829 INFO L268 CegarLoopResult]: For program point L404(lines 404 413) no Hoare annotation was computed. [2020-07-20 14:06:51,829 INFO L268 CegarLoopResult]: For program point L338(lines 338 347) no Hoare annotation was computed. [2020-07-20 14:06:51,829 INFO L268 CegarLoopResult]: For program point L338-2(lines 338 347) no Hoare annotation was computed. [2020-07-20 14:06:51,830 INFO L268 CegarLoopResult]: For program point L74(lines 74 413) no Hoare annotation was computed. [2020-07-20 14:06:51,830 INFO L268 CegarLoopResult]: For program point L570-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,830 INFO L268 CegarLoopResult]: For program point L537-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,830 INFO L268 CegarLoopResult]: For program point L504-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,830 INFO L268 CegarLoopResult]: For program point L471-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,831 INFO L268 CegarLoopResult]: For program point L438-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,831 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 577) no Hoare annotation was computed. [2020-07-20 14:06:51,831 INFO L268 CegarLoopResult]: For program point L75(lines 75 80) no Hoare annotation was computed. [2020-07-20 14:06:51,831 INFO L268 CegarLoopResult]: For program point L42(lines 42 413) no Hoare annotation was computed. [2020-07-20 14:06:51,832 INFO L268 CegarLoopResult]: For program point L75-2(lines 75 80) no Hoare annotation was computed. [2020-07-20 14:06:51,832 INFO L268 CegarLoopResult]: For program point L571(line 571) no Hoare annotation was computed. [2020-07-20 14:06:51,832 INFO L268 CegarLoopResult]: For program point L538(line 538) no Hoare annotation was computed. [2020-07-20 14:06:51,832 INFO L268 CegarLoopResult]: For program point L505(line 505) no Hoare annotation was computed. [2020-07-20 14:06:51,835 INFO L268 CegarLoopResult]: For program point L472(line 472) no Hoare annotation was computed. [2020-07-20 14:06:51,835 INFO L268 CegarLoopResult]: For program point L439(line 439) no Hoare annotation was computed. [2020-07-20 14:06:51,835 INFO L268 CegarLoopResult]: For program point L175(lines 175 413) no Hoare annotation was computed. [2020-07-20 14:06:51,835 INFO L268 CegarLoopResult]: For program point L407(lines 407 413) no Hoare annotation was computed. [2020-07-20 14:06:51,835 INFO L268 CegarLoopResult]: For program point L143(lines 143 413) no Hoare annotation was computed. [2020-07-20 14:06:51,835 INFO L268 CegarLoopResult]: For program point L573-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L540-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L507-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L474-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L441-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L375(lines 375 413) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L309(lines 309 413) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L276(lines 276 413) no Hoare annotation was computed. [2020-07-20 14:06:51,836 INFO L268 CegarLoopResult]: For program point L574(line 574) no Hoare annotation was computed. [2020-07-20 14:06:51,837 INFO L268 CegarLoopResult]: For program point L541(line 541) no Hoare annotation was computed. [2020-07-20 14:06:51,837 INFO L268 CegarLoopResult]: For program point L508(line 508) no Hoare annotation was computed. [2020-07-20 14:06:51,837 INFO L268 CegarLoopResult]: For program point L475(line 475) no Hoare annotation was computed. [2020-07-20 14:06:51,837 INFO L268 CegarLoopResult]: For program point L442(line 442) no Hoare annotation was computed. [2020-07-20 14:06:51,837 INFO L268 CegarLoopResult]: For program point L409(lines 409 413) no Hoare annotation was computed. [2020-07-20 14:06:51,838 INFO L268 CegarLoopResult]: For program point L212(lines 212 413) no Hoare annotation was computed. [2020-07-20 14:06:51,839 INFO L268 CegarLoopResult]: For program point L179(lines 179 413) no Hoare annotation was computed. [2020-07-20 14:06:51,839 INFO L268 CegarLoopResult]: For program point L113(lines 113 413) no Hoare annotation was computed. [2020-07-20 14:06:51,839 INFO L268 CegarLoopResult]: For program point L47(lines 47 413) no Hoare annotation was computed. [2020-07-20 14:06:51,839 INFO L268 CegarLoopResult]: For program point L576-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,839 INFO L268 CegarLoopResult]: For program point L543-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,840 INFO L268 CegarLoopResult]: For program point L510-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,840 INFO L268 CegarLoopResult]: For program point L477-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,840 INFO L268 CegarLoopResult]: For program point L444-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,840 INFO L268 CegarLoopResult]: For program point L378(lines 378 413) no Hoare annotation was computed. [2020-07-20 14:06:51,840 INFO L268 CegarLoopResult]: For program point L577(line 577) no Hoare annotation was computed. [2020-07-20 14:06:51,842 INFO L268 CegarLoopResult]: For program point L544(line 544) no Hoare annotation was computed. [2020-07-20 14:06:51,842 INFO L268 CegarLoopResult]: For program point L511(line 511) no Hoare annotation was computed. [2020-07-20 14:06:51,842 INFO L268 CegarLoopResult]: For program point L478(line 478) no Hoare annotation was computed. [2020-07-20 14:06:51,842 INFO L268 CegarLoopResult]: For program point L445(line 445) no Hoare annotation was computed. [2020-07-20 14:06:51,843 INFO L268 CegarLoopResult]: For program point L280(lines 280 413) no Hoare annotation was computed. [2020-07-20 14:06:51,843 INFO L268 CegarLoopResult]: For program point L148(lines 148 413) no Hoare annotation was computed. [2020-07-20 14:06:51,843 INFO L268 CegarLoopResult]: For program point L82(lines 82 413) no Hoare annotation was computed. [2020-07-20 14:06:51,843 INFO L268 CegarLoopResult]: For program point L380(lines 380 413) no Hoare annotation was computed. [2020-07-20 14:06:51,843 INFO L268 CegarLoopResult]: For program point L314(lines 314 413) no Hoare annotation was computed. [2020-07-20 14:06:51,844 INFO L268 CegarLoopResult]: For program point L248(lines 248 413) no Hoare annotation was computed. [2020-07-20 14:06:51,844 INFO L268 CegarLoopResult]: For program point L215(lines 215 413) no Hoare annotation was computed. [2020-07-20 14:06:51,844 INFO L268 CegarLoopResult]: For program point L83(lines 83 89) no Hoare annotation was computed. [2020-07-20 14:06:51,844 INFO L268 CegarLoopResult]: For program point L50(lines 50 413) no Hoare annotation was computed. [2020-07-20 14:06:51,844 INFO L268 CegarLoopResult]: For program point L83-2(lines 83 89) no Hoare annotation was computed. [2020-07-20 14:06:51,844 INFO L268 CegarLoopResult]: For program point L579-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,844 INFO L268 CegarLoopResult]: For program point L546-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L513-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L480-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L414(lines 414 416) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L447-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L381(lines 381 387) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L414-2(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L315(lines 315 326) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L381-2(lines 381 387) no Hoare annotation was computed. [2020-07-20 14:06:51,845 INFO L268 CegarLoopResult]: For program point L315-2(lines 315 326) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point L580(line 580) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point L547(line 547) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point L514(line 514) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point L481(line 481) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point L448(line 448) no Hoare annotation was computed. [2020-07-20 14:06:51,846 INFO L268 CegarLoopResult]: For program point L415(line 415) no Hoare annotation was computed. [2020-07-20 14:06:51,847 INFO L268 CegarLoopResult]: For program point L349(lines 349 413) no Hoare annotation was computed. [2020-07-20 14:06:51,848 INFO L268 CegarLoopResult]: For program point L283(lines 283 413) no Hoare annotation was computed. [2020-07-20 14:06:51,848 INFO L268 CegarLoopResult]: For program point L218(lines 218 413) no Hoare annotation was computed. [2020-07-20 14:06:51,848 INFO L268 CegarLoopResult]: For program point L185(lines 185 413) no Hoare annotation was computed. [2020-07-20 14:06:51,848 INFO L268 CegarLoopResult]: For program point L119(lines 119 413) no Hoare annotation was computed. [2020-07-20 14:06:51,848 INFO L268 CegarLoopResult]: For program point L582-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,848 INFO L268 CegarLoopResult]: For program point L549-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,848 INFO L268 CegarLoopResult]: For program point L516-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L483-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L450-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L417-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L54(lines 54 413) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L583(line 583) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L550(line 550) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L517(line 517) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L484(line 484) no Hoare annotation was computed. [2020-07-20 14:06:51,849 INFO L268 CegarLoopResult]: For program point L451(line 451) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L418(line 418) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L286(lines 286 413) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L253(lines 253 413) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L187(lines 187 413) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L154(lines 154 413) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L585-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L552-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L519-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,850 INFO L268 CegarLoopResult]: For program point L486-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,851 INFO L268 CegarLoopResult]: For program point L453-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,851 INFO L268 CegarLoopResult]: For program point L420-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,851 INFO L268 CegarLoopResult]: For program point L354(lines 354 413) no Hoare annotation was computed. [2020-07-20 14:06:51,851 INFO L268 CegarLoopResult]: For program point L189(lines 189 413) no Hoare annotation was computed. [2020-07-20 14:06:51,851 INFO L268 CegarLoopResult]: For program point L123(lines 123 413) no Hoare annotation was computed. [2020-07-20 14:06:51,852 INFO L268 CegarLoopResult]: For program point L586(line 586) no Hoare annotation was computed. [2020-07-20 14:06:51,852 INFO L268 CegarLoopResult]: For program point L553(line 553) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L520(line 520) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L487(line 487) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L454(line 454) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L421(line 421) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L223(lines 223 413) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L91(lines 91 413) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L389(lines 389 413) no Hoare annotation was computed. [2020-07-20 14:06:51,853 INFO L268 CegarLoopResult]: For program point L191(lines 191 413) no Hoare annotation was computed. [2020-07-20 14:06:51,854 INFO L268 CegarLoopResult]: For program point L59(lines 59 413) no Hoare annotation was computed. [2020-07-20 14:06:51,854 INFO L268 CegarLoopResult]: For program point L588-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,854 INFO L268 CegarLoopResult]: For program point L555-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,854 INFO L268 CegarLoopResult]: For program point L522-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,854 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 29 598) the Hoare annotation is: (let ((.cse4 (not (= 1 |old(~a19~0)|))) (.cse1 (<= 8 ~a17~0)) (.cse9 (<= ~a17~0 8)) (.cse6 (<= ~a17~0 |old(~a17~0)|)) (.cse8 (= ~a19~0 |old(~a19~0)|)) (.cse5 (not (<= |old(~a28~0)| 7))) (.cse7 (<= ~a28~0 |old(~a28~0)|)) (.cse2 (not (<= 8 |old(~a17~0)|))) (.cse0 (not (<= |old(~a28~0)| 10))) (.cse11 (not (<= 10 |old(~a28~0)|))) (.cse10 (<= 10 ~a28~0)) (.cse3 (not (<= |old(~a17~0)| 8)))) (and (or .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 .cse3 (and .cse6 .cse7 .cse8)) (or .cse4 .cse2 (and .cse7 .cse9 .cse1 .cse10 .cse8) .cse11 .cse3) (or (not (<= |old(~a28~0)| 8)) .cse2 (and .cse9 (<= ~a28~0 8) .cse8) .cse3) (or .cse0 (not (<= 9 |old(~a28~0)|)) (and .cse6 .cse7 .cse8 (<= 9 ~a28~0)) .cse3) (or .cse5 .cse7 .cse2 .cse3) (or .cse0 .cse11 .cse10 .cse3))) [2020-07-20 14:06:51,854 INFO L268 CegarLoopResult]: For program point L489-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,854 INFO L268 CegarLoopResult]: For program point L456-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L423-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L291(lines 291 413) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L225(lines 225 413) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L159(lines 159 413) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L589(line 589) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L556(line 556) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L523(line 523) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L490(line 490) no Hoare annotation was computed. [2020-07-20 14:06:51,855 INFO L268 CegarLoopResult]: For program point L457(line 457) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L424(line 424) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L259(lines 259 413) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L293(lines 293 413) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L194(lines 194 413) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L95(lines 95 413) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L591-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L558-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,856 INFO L268 CegarLoopResult]: For program point L525-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L492-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L459-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L426-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L261(lines 261 413) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L30(lines 30 413) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L592(line 592) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L559(line 559) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L526(line 526) no Hoare annotation was computed. [2020-07-20 14:06:51,857 INFO L268 CegarLoopResult]: For program point L493(line 493) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L460(line 460) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L427(line 427) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L394(lines 394 413) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L361(lines 361 413) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L328(lines 328 413) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L262(lines 262 274) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L262-2(lines 262 274) no Hoare annotation was computed. [2020-07-20 14:06:51,858 INFO L268 CegarLoopResult]: For program point L130(lines 130 413) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L65(lines 65 413) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L594-1(lines 594 596) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L561-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L528-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L495-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L462-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L429-1(lines 29 598) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L297(lines 297 413) no Hoare annotation was computed. [2020-07-20 14:06:51,859 INFO L268 CegarLoopResult]: For program point L198(lines 198 413) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L165(lines 165 413) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L99(lines 99 413) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L595(line 595) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L562(line 562) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L529(line 529) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L496(line 496) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L463(line 463) no Hoare annotation was computed. [2020-07-20 14:06:51,860 INFO L268 CegarLoopResult]: For program point L430(line 430) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L331(lines 331 413) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L298(lines 298 307) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L232(lines 232 413) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L298-2(lines 298 307) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L398(lines 398 413) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L332(lines 332 335) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L332-2(lines 332 335) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L134(lines 134 413) no Hoare annotation was computed. [2020-07-20 14:06:51,861 INFO L268 CegarLoopResult]: For program point L35(lines 35 413) no Hoare annotation was computed. [2020-07-20 14:06:51,862 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:06:51,862 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (= 1 ~a19~0) (<= ~a17~0 8) (<= 8 ~a17~0) (<= ~a28~0 7)) [2020-07-20 14:06:51,862 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:06:51,862 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:06:51,862 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 600 617) the Hoare annotation is: (or (not (= 1 |old(~a19~0)|)) (not (<= |old(~a28~0)| 7)) (not (<= 8 |old(~a17~0)|)) (and (<= ~a28~0 |old(~a28~0)|) (<= ~a17~0 8) (<= 8 ~a17~0) (= ~a19~0 |old(~a19~0)|)) (not (<= |old(~a17~0)| 8))) [2020-07-20 14:06:51,862 INFO L264 CegarLoopResult]: At program point L606-2(lines 606 616) the Hoare annotation is: (let ((.cse2 (<= 8 ~a17~0)) (.cse0 (= 1 ~a19~0)) (.cse1 (<= ~a17~0 8))) (or (not (= 1 |old(~a19~0)|)) (and .cse0 .cse1 .cse2) (and .cse1 .cse2 (<= ~a28~0 8)) (not (<= |old(~a28~0)| 7)) (and .cse1 (<= ~a28~0 10) (<= 9 ~a28~0)) (not (<= 8 |old(~a17~0)|)) (and .cse0 .cse1 (<= ~a28~0 7)) (not (<= |old(~a17~0)| 8)))) [2020-07-20 14:06:51,863 INFO L268 CegarLoopResult]: For program point L606-3(lines 600 617) no Hoare annotation was computed. [2020-07-20 14:06:51,863 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 600 617) no Hoare annotation was computed. [2020-07-20 14:06:51,863 INFO L264 CegarLoopResult]: At program point L614(line 614) the Hoare annotation is: (let ((.cse2 (<= 8 ~a17~0)) (.cse0 (= 1 ~a19~0)) (.cse1 (<= ~a17~0 8))) (or (not (= 1 |old(~a19~0)|)) (and .cse0 .cse1 .cse2) (and .cse1 .cse2 (<= ~a28~0 8)) (not (<= |old(~a28~0)| 7)) (and .cse1 (<= ~a28~0 10) (<= 9 ~a28~0)) (not (<= 8 |old(~a17~0)|)) (and .cse0 .cse1 (<= ~a28~0 7)) (not (<= |old(~a17~0)| 8)))) [2020-07-20 14:06:51,863 INFO L268 CegarLoopResult]: For program point L614-1(line 614) no Hoare annotation was computed. [2020-07-20 14:06:51,863 INFO L268 CegarLoopResult]: For program point L611(line 611) no Hoare annotation was computed. [2020-07-20 14:06:51,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:06:51 BoogieIcfgContainer [2020-07-20 14:06:51,898 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:06:51,900 INFO L168 Benchmark]: Toolchain (without parser) took 14580.52 ms. Allocated memory was 135.8 MB in the beginning and 456.1 MB in the end (delta: 320.3 MB). Free memory was 99.3 MB in the beginning and 381.9 MB in the end (delta: -282.6 MB). Peak memory consumption was 287.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:06:51,905 INFO L168 Benchmark]: CDTParser took 0.60 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-20 14:06:51,910 INFO L168 Benchmark]: CACSL2BoogieTranslator took 825.57 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 98.9 MB in the beginning and 168.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:06:51,910 INFO L168 Benchmark]: Boogie Preprocessor took 127.21 ms. Allocated memory is still 201.9 MB. Free memory was 168.8 MB in the beginning and 164.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:06:51,911 INFO L168 Benchmark]: RCFGBuilder took 1385.85 ms. Allocated memory was 201.9 MB in the beginning and 230.2 MB in the end (delta: 28.3 MB). Free memory was 164.3 MB in the beginning and 178.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. [2020-07-20 14:06:51,919 INFO L168 Benchmark]: TraceAbstraction took 12234.55 ms. Allocated memory was 230.2 MB in the beginning and 456.1 MB in the end (delta: 226.0 MB). Free memory was 178.6 MB in the beginning and 381.9 MB in the end (delta: -203.3 MB). Peak memory consumption was 271.9 MB. Max. memory is 7.1 GB. [2020-07-20 14:06:51,925 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.60 ms. Allocated memory is still 135.8 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 825.57 ms. Allocated memory was 135.8 MB in the beginning and 201.9 MB in the end (delta: 66.1 MB). Free memory was 98.9 MB in the beginning and 168.8 MB in the end (delta: -69.9 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.21 ms. Allocated memory is still 201.9 MB. Free memory was 168.8 MB in the beginning and 164.3 MB in the end (delta: 4.5 MB). Peak memory consumption was 4.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1385.85 ms. Allocated memory was 201.9 MB in the beginning and 230.2 MB in the end (delta: 28.3 MB). Free memory was 164.3 MB in the beginning and 178.6 MB in the end (delta: -14.3 MB). Peak memory consumption was 88.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12234.55 ms. Allocated memory was 230.2 MB in the beginning and 456.1 MB in the end (delta: 226.0 MB). Free memory was 178.6 MB in the beginning and 381.9 MB in the end (delta: -203.3 MB). Peak memory consumption was 271.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 577]: 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: 606]: Loop Invariant Derived loop invariant: ((((((!(1 == \old(a19)) || ((1 == a19 && a17 <= 8) && 8 <= a17)) || ((a17 <= 8 && 8 <= a17) && a28 <= 8)) || !(\old(a28) <= 7)) || ((a17 <= 8 && a28 <= 10) && 9 <= a28)) || !(8 <= \old(a17))) || ((1 == a19 && a17 <= 8) && a28 <= 7)) || !(\old(a17) <= 8) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 236 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.9s, OverallIterations: 8, TraceHistogramMax: 5, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 660 SDtfs, 2444 SDslu, 319 SDs, 0 SdLazy, 3839 SolverSat, 722 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1867 GetRequests, 1831 SyntacticMatches, 3 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1367occurred 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: 0.3s AutomataMinimizationTime, 8 MinimizatonAttempts, 352 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 55 PreInvPairs, 77 NumberOfFragments, 322 HoareAnnotationTreeSize, 55 FomulaSimplifications, 1782 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 7 FomulaSimplificationsInter, 976 FormulaSimplificationTreeSizeReductionInter, 0.8s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1455 NumberOfCodeBlocks, 1455 NumberOfCodeBlocksAsserted, 32 NumberOfCheckSat, 1850 ConstructedInterpolants, 0 QuantifiedInterpolants, 614442 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3345 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 656/664 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...