/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 22:07:57,674 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 22:07:57,677 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 22:07:57,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 22:07:57,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 22:07:57,695 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 22:07:57,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 22:07:57,698 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 22:07:57,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 22:07:57,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 22:07:57,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 22:07:57,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 22:07:57,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 22:07:57,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 22:07:57,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 22:07:57,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 22:07:57,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 22:07:57,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 22:07:57,710 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 22:07:57,712 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 22:07:57,713 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 22:07:57,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 22:07:57,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 22:07:57,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 22:07:57,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 22:07:57,726 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 22:07:57,727 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 22:07:57,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 22:07:57,728 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 22:07:57,743 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 22:07:57,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 22:07:57,744 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 22:07:57,745 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 22:07:57,745 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 22:07:57,745 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 22:07:57,745 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 22:07:57,745 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 22:07:57,746 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 22:07:57,746 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 22:07:57,746 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 22:07:57,746 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 22:07:57,746 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 22:07:57,747 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 22:07:57,747 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 22:07:57,747 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 22:07:57,747 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 22:07:57,747 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 22:07:57,748 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 22:07:57,748 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 22:07:57,748 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 22:07:57,748 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 22:07:57,748 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 22:07:57,749 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 22:07:57,749 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 22:07:57,749 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 22:07:57,749 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:07:57,749 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 22:07:57,749 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 22:07:57,750 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 -> DAGSIZE 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 22:07:58,031 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 22:07:58,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 22:07:58,048 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 22:07:58,050 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 22:07:58,050 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 22:07:58,051 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-07-20 22:07:58,137 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01f588a02/935298fb7abc4f9d9002ccb9bc8ab128/FLAG7dbcfd59e [2020-07-20 22:07:58,668 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 22:07:58,670 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label45.c [2020-07-20 22:07:58,691 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01f588a02/935298fb7abc4f9d9002ccb9bc8ab128/FLAG7dbcfd59e [2020-07-20 22:07:59,008 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/01f588a02/935298fb7abc4f9d9002ccb9bc8ab128 [2020-07-20 22:07:59,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 22:07:59,020 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 22:07:59,021 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 22:07:59,022 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 22:07:59,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 22:07:59,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3607cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59, skipping insertion in model container [2020-07-20 22:07:59,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,037 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 22:07:59,099 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 22:07:59,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:07:59,639 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 22:07:59,758 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 22:07:59,786 INFO L208 MainTranslator]: Completed translation [2020-07-20 22:07:59,786 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59 WrapperNode [2020-07-20 22:07:59,786 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 22:07:59,787 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 22:07:59,787 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 22:07:59,787 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 22:07:59,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,821 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,822 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,858 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,878 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (1/1) ... [2020-07-20 22:07:59,901 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 22:07:59,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 22:07:59,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 22:07:59,902 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 22:07:59,904 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (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 22:07:59,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 22:07:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 22:07:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 22:07:59,983 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 22:07:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 22:07:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 22:07:59,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 22:07:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 22:07:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 22:07:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 22:07:59,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 22:08:01,207 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 22:08:01,207 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 22:08:01,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:08:01 BoogieIcfgContainer [2020-07-20 22:08:01,213 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 22:08:01,215 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 22:08:01,215 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 22:08:01,218 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 22:08:01,219 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 10:07:59" (1/3) ... [2020-07-20 22:08:01,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ad1bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:08:01, skipping insertion in model container [2020-07-20 22:08:01,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 10:07:59" (2/3) ... [2020-07-20 22:08:01,220 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@61ad1bca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 10:08:01, skipping insertion in model container [2020-07-20 22:08:01,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 10:08:01" (3/3) ... [2020-07-20 22:08:01,223 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label45.c [2020-07-20 22:08:01,235 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 22:08:01,243 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 22:08:01,257 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 22:08:01,284 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 22:08:01,284 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 22:08:01,285 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 22:08:01,285 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 22:08:01,285 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 22:08:01,285 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 22:08:01,286 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 22:08:01,286 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 22:08:01,309 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 22:08:01,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-20 22:08:01,318 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:01,319 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] [2020-07-20 22:08:01,319 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:01,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:01,326 INFO L82 PathProgramCache]: Analyzing trace with hash 312365279, now seen corresponding path program 1 times [2020-07-20 22:08:01,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:01,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [887311045] [2020-07-20 22:08:01,336 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 22:08:01,469 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:01,470 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:01,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 144 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:08:01,480 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:01,547 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 22:08:01,547 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:08:01,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [887311045] [2020-07-20 22:08:01,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:08:01,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:08:01,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829122756] [2020-07-20 22:08:01,555 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:08:01,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:01,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:08:01,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:08:01,573 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 22:08:02,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:02,706 INFO L93 Difference]: Finished difference Result 586 states and 1004 transitions. [2020-07-20 22:08:02,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:08:02,708 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 44 [2020-07-20 22:08:02,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:02,724 INFO L225 Difference]: With dead ends: 586 [2020-07-20 22:08:02,724 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 22:08:02,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 42 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 22:08:02,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 22:08:02,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 22:08:02,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 22:08:02,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 426 transitions. [2020-07-20 22:08:02,802 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 426 transitions. Word has length 44 [2020-07-20 22:08:02,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:02,803 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 426 transitions. [2020-07-20 22:08:02,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:08:02,804 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 426 transitions. [2020-07-20 22:08:02,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2020-07-20 22:08:02,809 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:02,810 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:03,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:03,024 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:03,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:03,025 INFO L82 PathProgramCache]: Analyzing trace with hash -269514694, now seen corresponding path program 1 times [2020-07-20 22:08:03,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:03,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1795005601] [2020-07-20 22:08:03,026 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 22:08:03,121 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:03,122 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:03,123 INFO L263 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:08:03,128 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:03,164 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:08:03,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1795005601] [2020-07-20 22:08:03,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:08:03,165 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:08:03,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609490993] [2020-07-20 22:08:03,167 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:08:03,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:03,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:08:03,168 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:08:03,168 INFO L87 Difference]: Start difference. First operand 294 states and 426 transitions. Second operand 3 states. [2020-07-20 22:08:03,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:03,852 INFO L93 Difference]: Finished difference Result 868 states and 1277 transitions. [2020-07-20 22:08:03,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:08:03,853 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 118 [2020-07-20 22:08:03,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:03,859 INFO L225 Difference]: With dead ends: 868 [2020-07-20 22:08:03,859 INFO L226 Difference]: Without dead ends: 580 [2020-07-20 22:08:03,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 116 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 22:08:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2020-07-20 22:08:03,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2020-07-20 22:08:03,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-07-20 22:08:03,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 762 transitions. [2020-07-20 22:08:03,907 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 762 transitions. Word has length 118 [2020-07-20 22:08:03,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:03,908 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 762 transitions. [2020-07-20 22:08:03,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:08:03,908 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 762 transitions. [2020-07-20 22:08:03,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-07-20 22:08:03,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:03,912 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:04,124 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:04,125 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:04,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:04,126 INFO L82 PathProgramCache]: Analyzing trace with hash -681057027, now seen corresponding path program 1 times [2020-07-20 22:08:04,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:04,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277745992] [2020-07-20 22:08:04,128 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 22:08:04,206 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:04,206 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:04,208 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 22:08:04,213 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:04,249 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:08:04,251 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:08:07,678 WARN L193 SmtUtils]: Spent 3.39 s on a formula simplification that was a NOOP. DAG size: 25 [2020-07-20 22:08:07,719 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 22:08:07,951 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:07,951 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:08:08,021 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:08:08,023 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:08:08,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277745992] [2020-07-20 22:08:08,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:08:08,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-20 22:08:08,090 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492584950] [2020-07-20 22:08:08,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:08:08,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:08,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:08:08,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-20 22:08:08,092 INFO L87 Difference]: Start difference. First operand 580 states and 762 transitions. Second operand 6 states. [2020-07-20 22:08:11,997 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification that was a NOOP. DAG size: 29 [2020-07-20 22:08:14,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:14,328 INFO L93 Difference]: Finished difference Result 1911 states and 2601 transitions. [2020-07-20 22:08:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 22:08:14,328 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 123 [2020-07-20 22:08:14,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:14,342 INFO L225 Difference]: With dead ends: 1911 [2020-07-20 22:08:14,342 INFO L226 Difference]: Without dead ends: 1337 [2020-07-20 22:08:14,344 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 155 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=58, Invalid=98, Unknown=0, NotChecked=0, Total=156 [2020-07-20 22:08:14,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1337 states. [2020-07-20 22:08:14,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1337 to 1317. [2020-07-20 22:08:14,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1317 states. [2020-07-20 22:08:14,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1317 states to 1317 states and 1718 transitions. [2020-07-20 22:08:14,437 INFO L78 Accepts]: Start accepts. Automaton has 1317 states and 1718 transitions. Word has length 123 [2020-07-20 22:08:14,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:14,437 INFO L479 AbstractCegarLoop]: Abstraction has 1317 states and 1718 transitions. [2020-07-20 22:08:14,438 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:08:14,438 INFO L276 IsEmpty]: Start isEmpty. Operand 1317 states and 1718 transitions. [2020-07-20 22:08:14,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-07-20 22:08:14,442 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:14,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:14,656 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:14,657 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:14,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:14,658 INFO L82 PathProgramCache]: Analyzing trace with hash -255280675, now seen corresponding path program 1 times [2020-07-20 22:08:14,658 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:14,659 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095688246] [2020-07-20 22:08:14,660 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 22:08:14,746 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:14,747 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:14,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:08:14,752 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:14,825 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:14,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:08:14,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095688246] [2020-07-20 22:08:14,826 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:08:14,827 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:08:14,827 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070800118] [2020-07-20 22:08:14,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:08:14,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:14,828 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:08:14,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:08:14,828 INFO L87 Difference]: Start difference. First operand 1317 states and 1718 transitions. Second operand 3 states. [2020-07-20 22:08:15,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:15,879 INFO L93 Difference]: Finished difference Result 3063 states and 4173 transitions. [2020-07-20 22:08:15,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:08:15,880 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 139 [2020-07-20 22:08:15,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:15,892 INFO L225 Difference]: With dead ends: 3063 [2020-07-20 22:08:15,892 INFO L226 Difference]: Without dead ends: 1895 [2020-07-20 22:08:15,896 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 137 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 22:08:15,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-07-20 22:08:15,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1895. [2020-07-20 22:08:15,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2020-07-20 22:08:15,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2397 transitions. [2020-07-20 22:08:15,956 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2397 transitions. Word has length 139 [2020-07-20 22:08:15,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:15,957 INFO L479 AbstractCegarLoop]: Abstraction has 1895 states and 2397 transitions. [2020-07-20 22:08:15,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:08:15,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2397 transitions. [2020-07-20 22:08:15,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-07-20 22:08:15,961 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:15,962 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:16,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:16,176 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:16,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:16,176 INFO L82 PathProgramCache]: Analyzing trace with hash 844100826, now seen corresponding path program 1 times [2020-07-20 22:08:16,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:16,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176977903] [2020-07-20 22:08:16,177 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 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 22:08:16,270 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:16,271 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:16,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:08:16,275 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:16,321 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:16,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:08:16,322 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176977903] [2020-07-20 22:08:16,347 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:08:16,347 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:08:16,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503714481] [2020-07-20 22:08:16,348 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:08:16,348 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:16,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:08:16,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:08:16,349 INFO L87 Difference]: Start difference. First operand 1895 states and 2397 transitions. Second operand 3 states. [2020-07-20 22:08:17,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:17,301 INFO L93 Difference]: Finished difference Result 4366 states and 5654 transitions. [2020-07-20 22:08:17,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:08:17,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 166 [2020-07-20 22:08:17,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:17,313 INFO L225 Difference]: With dead ends: 4366 [2020-07-20 22:08:17,313 INFO L226 Difference]: Without dead ends: 1895 [2020-07-20 22:08:17,322 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 164 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 22:08:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1895 states. [2020-07-20 22:08:17,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1895 to 1895. [2020-07-20 22:08:17,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1895 states. [2020-07-20 22:08:17,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1895 states to 1895 states and 2357 transitions. [2020-07-20 22:08:17,398 INFO L78 Accepts]: Start accepts. Automaton has 1895 states and 2357 transitions. Word has length 166 [2020-07-20 22:08:17,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:17,399 INFO L479 AbstractCegarLoop]: Abstraction has 1895 states and 2357 transitions. [2020-07-20 22:08:17,399 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:08:17,400 INFO L276 IsEmpty]: Start isEmpty. Operand 1895 states and 2357 transitions. [2020-07-20 22:08:17,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-07-20 22:08:17,405 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:17,405 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:08:17,620 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:17,621 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:17,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:17,621 INFO L82 PathProgramCache]: Analyzing trace with hash -657040215, now seen corresponding path program 1 times [2020-07-20 22:08:17,622 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:17,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [239510403] [2020-07-20 22:08:17,622 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 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 22:08:17,717 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:17,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:17,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:08:17,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:17,782 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:17,783 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:08:17,783 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [239510403] [2020-07-20 22:08:17,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:08:17,784 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 22:08:17,784 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873936342] [2020-07-20 22:08:17,785 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 22:08:17,785 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:17,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 22:08:17,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 22:08:17,785 INFO L87 Difference]: Start difference. First operand 1895 states and 2357 transitions. Second operand 3 states. [2020-07-20 22:08:18,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:18,612 INFO L93 Difference]: Finished difference Result 3053 states and 3934 transitions. [2020-07-20 22:08:18,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 22:08:18,613 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 181 [2020-07-20 22:08:18,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:18,631 INFO L225 Difference]: With dead ends: 3053 [2020-07-20 22:08:18,631 INFO L226 Difference]: Without dead ends: 3051 [2020-07-20 22:08:18,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 179 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 22:08:18,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3051 states. [2020-07-20 22:08:18,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3051 to 2479. [2020-07-20 22:08:18,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2479 states. [2020-07-20 22:08:18,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2479 states to 2479 states and 3214 transitions. [2020-07-20 22:08:18,712 INFO L78 Accepts]: Start accepts. Automaton has 2479 states and 3214 transitions. Word has length 181 [2020-07-20 22:08:18,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:18,713 INFO L479 AbstractCegarLoop]: Abstraction has 2479 states and 3214 transitions. [2020-07-20 22:08:18,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 22:08:18,713 INFO L276 IsEmpty]: Start isEmpty. Operand 2479 states and 3214 transitions. [2020-07-20 22:08:18,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-07-20 22:08:18,718 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:18,719 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:08:18,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:18,932 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:18,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:18,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1538101510, now seen corresponding path program 1 times [2020-07-20 22:08:18,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:18,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [892459584] [2020-07-20 22:08:18,934 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 22:08:19,028 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:19,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:19,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:08:19,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:19,085 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:19,085 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:08:19,239 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:19,240 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [892459584] [2020-07-20 22:08:19,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:08:19,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:08:19,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121184795] [2020-07-20 22:08:19,242 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:08:19,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:19,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:08:19,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:08:19,243 INFO L87 Difference]: Start difference. First operand 2479 states and 3214 transitions. Second operand 7 states. [2020-07-20 22:08:21,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:21,349 INFO L93 Difference]: Finished difference Result 5521 states and 7764 transitions. [2020-07-20 22:08:21,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 22:08:21,350 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-07-20 22:08:21,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:21,371 INFO L225 Difference]: With dead ends: 5521 [2020-07-20 22:08:21,371 INFO L226 Difference]: Without dead ends: 3191 [2020-07-20 22:08:21,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 395 GetRequests, 384 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2020-07-20 22:08:21,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3191 states. [2020-07-20 22:08:21,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3191 to 2791. [2020-07-20 22:08:21,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2791 states. [2020-07-20 22:08:21,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2791 states to 2791 states and 3481 transitions. [2020-07-20 22:08:21,488 INFO L78 Accepts]: Start accepts. Automaton has 2791 states and 3481 transitions. Word has length 193 [2020-07-20 22:08:21,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:21,489 INFO L479 AbstractCegarLoop]: Abstraction has 2791 states and 3481 transitions. [2020-07-20 22:08:21,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:08:21,491 INFO L276 IsEmpty]: Start isEmpty. Operand 2791 states and 3481 transitions. [2020-07-20 22:08:21,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-07-20 22:08:21,499 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:21,500 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 22:08:21,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:21,713 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:21,714 INFO L82 PathProgramCache]: Analyzing trace with hash -1297380233, now seen corresponding path program 1 times [2020-07-20 22:08:21,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:21,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968549727] [2020-07-20 22:08:21,714 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 22:08:21,823 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:21,824 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:21,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 388 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:08:21,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:21,881 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:21,881 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:08:22,029 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 151 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 22:08:22,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968549727] [2020-07-20 22:08:22,031 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:08:22,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 22:08:22,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299371649] [2020-07-20 22:08:22,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 22:08:22,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:22,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 22:08:22,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:08:22,034 INFO L87 Difference]: Start difference. First operand 2791 states and 3481 transitions. Second operand 6 states. [2020-07-20 22:08:23,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:08:23,594 INFO L93 Difference]: Finished difference Result 6185 states and 8402 transitions. [2020-07-20 22:08:23,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 22:08:23,595 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 214 [2020-07-20 22:08:23,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:08:23,618 INFO L225 Difference]: With dead ends: 6185 [2020-07-20 22:08:23,618 INFO L226 Difference]: Without dead ends: 3543 [2020-07-20 22:08:23,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 433 GetRequests, 424 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:08:23,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3543 states. [2020-07-20 22:08:23,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3543 to 3101. [2020-07-20 22:08:23,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3101 states. [2020-07-20 22:08:23,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3101 states to 3101 states and 3754 transitions. [2020-07-20 22:08:23,733 INFO L78 Accepts]: Start accepts. Automaton has 3101 states and 3754 transitions. Word has length 214 [2020-07-20 22:08:23,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:08:23,734 INFO L479 AbstractCegarLoop]: Abstraction has 3101 states and 3754 transitions. [2020-07-20 22:08:23,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 22:08:23,734 INFO L276 IsEmpty]: Start isEmpty. Operand 3101 states and 3754 transitions. [2020-07-20 22:08:23,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-07-20 22:08:23,744 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:08:23,744 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:08:23,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:23,958 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:08:23,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:08:23,959 INFO L82 PathProgramCache]: Analyzing trace with hash 1367628375, now seen corresponding path program 1 times [2020-07-20 22:08:23,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:08:23,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498257501] [2020-07-20 22:08:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:08:24,116 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:08:24,116 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:08:24,118 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 22:08:24,122 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:08:24,136 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:08:24,137 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:08:42,364 WARN L193 SmtUtils]: Spent 18.20 s on a formula simplification that was a NOOP. DAG size: 34 [2020-07-20 22:08:42,400 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 22:08:42,544 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 3, 3, 1] term [2020-07-20 22:08:42,544 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 22:08:42,546 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 22:08:42,612 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:08:42,711 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 290 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 22:08:42,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:08:42,857 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:08:42,858 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:08:42,859 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:08:42,860 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:08:42,898 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:08:42,899 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:08:43,141 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:08:43,143 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:08:43,145 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:08:43,149 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:08:43,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498257501] [2020-07-20 22:08:43,397 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:08:43,397 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-20 22:08:43,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262017999] [2020-07-20 22:08:43,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 22:08:43,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:08:43,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 22:08:43,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 22:08:43,398 INFO L87 Difference]: Start difference. First operand 3101 states and 3754 transitions. Second operand 8 states. [2020-07-20 22:09:16,137 WARN L193 SmtUtils]: Spent 32.31 s on a formula simplification. DAG size of input: 50 DAG size of output: 46 [2020-07-20 22:09:46,285 WARN L193 SmtUtils]: Spent 24.23 s on a formula simplification that was a NOOP. DAG size: 38 [2020-07-20 22:10:19,687 WARN L193 SmtUtils]: Spent 32.52 s on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-07-20 22:10:53,045 WARN L193 SmtUtils]: Spent 32.47 s on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-07-20 22:10:54,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:10:54,489 INFO L93 Difference]: Finished difference Result 7094 states and 8639 transitions. [2020-07-20 22:10:54,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-20 22:10:54,496 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 279 [2020-07-20 22:10:54,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:10:54,513 INFO L225 Difference]: With dead ends: 7094 [2020-07-20 22:10:54,514 INFO L226 Difference]: Without dead ends: 4142 [2020-07-20 22:10:54,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 494 GetRequests, 472 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 140.8s TimeCoverageRelationStatistics Valid=141, Invalid=321, Unknown=0, NotChecked=0, Total=462 [2020-07-20 22:10:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4142 states. [2020-07-20 22:10:54,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4142 to 4136. [2020-07-20 22:10:54,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4136 states. [2020-07-20 22:10:54,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4136 states to 4136 states and 4948 transitions. [2020-07-20 22:10:54,661 INFO L78 Accepts]: Start accepts. Automaton has 4136 states and 4948 transitions. Word has length 279 [2020-07-20 22:10:54,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:10:54,661 INFO L479 AbstractCegarLoop]: Abstraction has 4136 states and 4948 transitions. [2020-07-20 22:10:54,661 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 22:10:54,661 INFO L276 IsEmpty]: Start isEmpty. Operand 4136 states and 4948 transitions. [2020-07-20 22:10:54,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2020-07-20 22:10:54,671 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:10:54,672 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:10:54,885 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:10:54,886 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:10:54,886 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:10:54,886 INFO L82 PathProgramCache]: Analyzing trace with hash -2010009072, now seen corresponding path program 1 times [2020-07-20 22:10:54,886 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:10:54,887 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234859134] [2020-07-20 22:10:54,887 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:10:55,001 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:10:55,001 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:10:55,002 INFO L263 TraceCheckSpWp]: Trace formula consists of 493 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 22:10:55,006 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:10:55,170 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 296 proven. 2 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-07-20 22:10:55,170 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:10:55,472 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 186 proven. 79 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-07-20 22:10:55,472 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234859134] [2020-07-20 22:10:55,472 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:10:55,473 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-20 22:10:55,473 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1368267234] [2020-07-20 22:10:55,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-20 22:10:55,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:10:55,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-20 22:10:55,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:10:55,476 INFO L87 Difference]: Start difference. First operand 4136 states and 4948 transitions. Second operand 7 states. [2020-07-20 22:11:02,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:11:02,081 INFO L93 Difference]: Finished difference Result 11986 states and 14396 transitions. [2020-07-20 22:11:02,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:11:02,089 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 282 [2020-07-20 22:11:02,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:11:02,112 INFO L225 Difference]: With dead ends: 11986 [2020-07-20 22:11:02,113 INFO L226 Difference]: Without dead ends: 6690 [2020-07-20 22:11:02,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 559 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:11:02,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6690 states. [2020-07-20 22:11:02,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6690 to 6404. [2020-07-20 22:11:02,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6404 states. [2020-07-20 22:11:02,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6404 states to 6404 states and 7450 transitions. [2020-07-20 22:11:02,255 INFO L78 Accepts]: Start accepts. Automaton has 6404 states and 7450 transitions. Word has length 282 [2020-07-20 22:11:02,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:11:02,256 INFO L479 AbstractCegarLoop]: Abstraction has 6404 states and 7450 transitions. [2020-07-20 22:11:02,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-20 22:11:02,256 INFO L276 IsEmpty]: Start isEmpty. Operand 6404 states and 7450 transitions. [2020-07-20 22:11:02,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-07-20 22:11:02,267 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:11:02,268 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:11:02,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:11:02,482 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:11:02,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:11:02,482 INFO L82 PathProgramCache]: Analyzing trace with hash 1813331928, now seen corresponding path program 1 times [2020-07-20 22:11:02,482 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:11:02,482 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [743019069] [2020-07-20 22:11:02,483 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:11:02,597 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:11:02,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:11:02,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 495 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 22:11:02,602 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:11:02,769 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 189 proven. 0 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-07-20 22:11:02,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:11:02,770 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [743019069] [2020-07-20 22:11:02,770 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:11:02,771 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:11:02,771 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170958940] [2020-07-20 22:11:02,771 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:11:02,772 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:11:02,772 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:11:02,772 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:11:02,772 INFO L87 Difference]: Start difference. First operand 6404 states and 7450 transitions. Second operand 5 states. [2020-07-20 22:11:06,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:11:06,513 INFO L93 Difference]: Finished difference Result 12663 states and 14747 transitions. [2020-07-20 22:11:06,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 22:11:06,517 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 286 [2020-07-20 22:11:06,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:11:06,544 INFO L225 Difference]: With dead ends: 12663 [2020-07-20 22:11:06,544 INFO L226 Difference]: Without dead ends: 6410 [2020-07-20 22:11:06,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 282 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-20 22:11:06,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6410 states. [2020-07-20 22:11:06,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6410 to 6410. [2020-07-20 22:11:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6410 states. [2020-07-20 22:11:06,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6410 states to 6410 states and 7463 transitions. [2020-07-20 22:11:06,693 INFO L78 Accepts]: Start accepts. Automaton has 6410 states and 7463 transitions. Word has length 286 [2020-07-20 22:11:06,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:11:06,693 INFO L479 AbstractCegarLoop]: Abstraction has 6410 states and 7463 transitions. [2020-07-20 22:11:06,694 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:11:06,694 INFO L276 IsEmpty]: Start isEmpty. Operand 6410 states and 7463 transitions. [2020-07-20 22:11:06,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 393 [2020-07-20 22:11:06,711 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:11:06,711 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:11:06,925 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:11:06,926 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:11:06,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:11:06,927 INFO L82 PathProgramCache]: Analyzing trace with hash -454298869, now seen corresponding path program 1 times [2020-07-20 22:11:06,927 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:11:06,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1916289165] [2020-07-20 22:11:06,928 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:11:07,123 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:11:07,123 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:11:07,125 INFO L263 TraceCheckSpWp]: Trace formula consists of 638 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 22:11:07,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:11:07,299 INFO L134 CoverageAnalysis]: Checked inductivity of 637 backedges. 282 proven. 0 refuted. 0 times theorem prover too weak. 355 trivial. 0 not checked. [2020-07-20 22:11:07,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 22:11:07,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1916289165] [2020-07-20 22:11:07,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 22:11:07,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 22:11:07,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799678659] [2020-07-20 22:11:07,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 22:11:07,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:11:07,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 22:11:07,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-20 22:11:07,302 INFO L87 Difference]: Start difference. First operand 6410 states and 7463 transitions. Second operand 5 states. [2020-07-20 22:11:10,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:11:10,620 INFO L93 Difference]: Finished difference Result 11821 states and 13808 transitions. [2020-07-20 22:11:10,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:11:10,626 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 392 [2020-07-20 22:11:10,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:11:10,639 INFO L225 Difference]: With dead ends: 11821 [2020-07-20 22:11:10,639 INFO L226 Difference]: Without dead ends: 5562 [2020-07-20 22:11:10,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 392 GetRequests, 388 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 22:11:10,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5562 states. [2020-07-20 22:11:10,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5562 to 3403. [2020-07-20 22:11:10,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3403 states. [2020-07-20 22:11:10,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3403 states to 3403 states and 3797 transitions. [2020-07-20 22:11:10,715 INFO L78 Accepts]: Start accepts. Automaton has 3403 states and 3797 transitions. Word has length 392 [2020-07-20 22:11:10,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:11:10,715 INFO L479 AbstractCegarLoop]: Abstraction has 3403 states and 3797 transitions. [2020-07-20 22:11:10,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 22:11:10,716 INFO L276 IsEmpty]: Start isEmpty. Operand 3403 states and 3797 transitions. [2020-07-20 22:11:10,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 402 [2020-07-20 22:11:10,728 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:11:10,728 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2020-07-20 22:11:10,941 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:11:10,942 INFO L427 AbstractCegarLoop]: === Iteration 13 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:11:10,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:11:10,943 INFO L82 PathProgramCache]: Analyzing trace with hash 1873477998, now seen corresponding path program 1 times [2020-07-20 22:11:10,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:11:10,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176206361] [2020-07-20 22:11:10,946 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:11:11,177 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:11:11,178 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:11:11,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 647 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 22:11:11,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:11:11,221 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:11:11,223 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:11:11,223 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 22:11:11,224 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:11:11,225 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:11:11,226 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:11:11,227 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:11:11,227 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 22:11:25,759 WARN L193 SmtUtils]: Spent 14.47 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-07-20 22:11:25,818 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 22:11:26,007 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 22:11:26,007 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:11:26,008 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:11:26,088 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:11:26,090 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:11:26,260 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 466 proven. 2 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-07-20 22:11:26,261 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:11:26,590 WARN L193 SmtUtils]: Spent 189.00 ms on a formula simplification. DAG size of input: 24 DAG size of output: 22 [2020-07-20 22:11:26,677 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:26,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:11:26,678 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:11:26,679 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:26,750 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:11:26,751 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,106 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:11:27,108 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:11:27,108 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,109 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,110 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,111 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,112 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,112 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:11:27,113 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,114 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:11:27,115 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:11:27,116 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,116 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,117 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,118 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,118 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,119 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:11:27,120 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,121 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,122 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,122 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:11:27,123 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,124 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:11:27,124 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,125 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 22:11:27,126 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 22:11:27,474 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 14 [2020-07-20 22:11:27,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176206361] [2020-07-20 22:11:27,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 22:11:27,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-20 22:11:27,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822508855] [2020-07-20 22:11:27,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 22:11:27,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:11:27,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 22:11:27,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 22:11:27,479 INFO L87 Difference]: Start difference. First operand 3403 states and 3797 transitions. Second operand 8 states. [2020-07-20 22:11:32,441 WARN L193 SmtUtils]: Spent 2.37 s on a formula simplification. DAG size of input: 55 DAG size of output: 40 [2020-07-20 22:11:40,315 WARN L193 SmtUtils]: Spent 1.36 s on a formula simplification. DAG size of input: 46 DAG size of output: 32 [2020-07-20 22:11:42,833 WARN L193 SmtUtils]: Spent 927.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 34 [2020-07-20 22:12:19,481 WARN L193 SmtUtils]: Spent 35.92 s on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-07-20 22:12:19,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:12:19,694 INFO L93 Difference]: Finished difference Result 7398 states and 8306 transitions. [2020-07-20 22:12:19,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-20 22:12:19,703 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 401 [2020-07-20 22:12:19,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:12:19,716 INFO L225 Difference]: With dead ends: 7398 [2020-07-20 22:12:19,716 INFO L226 Difference]: Without dead ends: 4146 [2020-07-20 22:12:19,725 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 693 GetRequests, 671 SyntacticMatches, 2 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 56.6s TimeCoverageRelationStatistics Valid=149, Invalid=313, Unknown=0, NotChecked=0, Total=462 [2020-07-20 22:12:19,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2020-07-20 22:12:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 3844. [2020-07-20 22:12:19,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3844 states. [2020-07-20 22:12:19,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3844 states to 3844 states and 4279 transitions. [2020-07-20 22:12:19,802 INFO L78 Accepts]: Start accepts. Automaton has 3844 states and 4279 transitions. Word has length 401 [2020-07-20 22:12:19,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:12:19,803 INFO L479 AbstractCegarLoop]: Abstraction has 3844 states and 4279 transitions. [2020-07-20 22:12:19,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 22:12:19,803 INFO L276 IsEmpty]: Start isEmpty. Operand 3844 states and 4279 transitions. [2020-07-20 22:12:19,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 413 [2020-07-20 22:12:19,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 22:12:19,822 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 22:12:20,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:12:20,028 INFO L427 AbstractCegarLoop]: === Iteration 14 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 22:12:20,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 22:12:20,028 INFO L82 PathProgramCache]: Analyzing trace with hash 623687851, now seen corresponding path program 1 times [2020-07-20 22:12:20,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 22:12:20,029 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429252289] [2020-07-20 22:12:20,029 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:12:20,240 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 22:12:20,240 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 22:12:20,242 INFO L263 TraceCheckSpWp]: Trace formula consists of 658 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-20 22:12:20,246 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 22:12:20,448 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 21 DAG size of output: 19 [2020-07-20 22:12:20,452 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 22:12:20,453 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 22:12:20,614 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 21 [2020-07-20 22:12:20,925 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 392 proven. 76 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2020-07-20 22:12:20,925 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 22:12:21,153 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 34 [2020-07-20 22:12:21,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:21,394 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 22:12:21,405 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:21,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 22:12:21,501 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:21,789 WARN L193 SmtUtils]: Spent 243.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 30 [2020-07-20 22:12:21,795 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-20 22:12:21,801 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 22:12:22,114 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 190 proven. 12 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2020-07-20 22:12:22,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429252289] [2020-07-20 22:12:22,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 22:12:22,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 9 [2020-07-20 22:12:22,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553859366] [2020-07-20 22:12:22,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-20 22:12:22,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 22:12:22,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-20 22:12:22,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=43, Unknown=0, NotChecked=0, Total=72 [2020-07-20 22:12:22,116 INFO L87 Difference]: Start difference. First operand 3844 states and 4279 transitions. Second operand 9 states. [2020-07-20 22:12:31,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 22:12:31,389 INFO L93 Difference]: Finished difference Result 8386 states and 9434 transitions. [2020-07-20 22:12:31,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 22:12:31,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 412 [2020-07-20 22:12:31,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 22:12:31,398 INFO L225 Difference]: With dead ends: 8386 [2020-07-20 22:12:31,399 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 22:12:31,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 825 GetRequests, 817 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=37, Invalid=53, Unknown=0, NotChecked=0, Total=90 [2020-07-20 22:12:31,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 22:12:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 22:12:31,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 22:12:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 22:12:31,412 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 412 [2020-07-20 22:12:31,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 22:12:31,412 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 22:12:31,412 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-20 22:12:31,412 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 22:12:31,413 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 22:12:31,626 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 22:12:31,630 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 22:12:33,107 WARN L193 SmtUtils]: Spent 452.00 ms on a formula simplification. DAG size of input: 408 DAG size of output: 288 [2020-07-20 22:12:33,426 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 408 DAG size of output: 288 [2020-07-20 22:12:33,543 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 26 DAG size of output: 16 [2020-07-20 22:12:33,892 WARN L193 SmtUtils]: Spent 345.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 31 [2020-07-20 22:12:39,827 WARN L193 SmtUtils]: Spent 5.91 s on a formula simplification. DAG size of input: 311 DAG size of output: 88 [2020-07-20 22:12:45,380 WARN L193 SmtUtils]: Spent 5.45 s on a formula simplification. DAG size of input: 289 DAG size of output: 49 [2020-07-20 22:12:48,948 WARN L193 SmtUtils]: Spent 3.56 s on a formula simplification. DAG size of input: 289 DAG size of output: 49 [2020-07-20 22:12:48,952 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:12:48,953 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= |old(~a19~0)| ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-20 22:12:48,953 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:12:48,953 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 22:12:48,953 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,954 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,954 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,954 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,954 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,954 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,954 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 22:12:48,955 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 22:12:48,955 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 22:12:48,955 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 22:12:48,955 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 22:12:48,955 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 22:12:48,956 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 22:12:48,956 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 22:12:48,956 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 22:12:48,956 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 22:12:48,956 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 22:12:48,956 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 22:12:48,957 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 22:12:48,958 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 22:12:48,958 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 22:12:48,958 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 22:12:48,958 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 22:12:48,958 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 22:12:48,958 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 22:12:48,958 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 118) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,959 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 22:12:48,960 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 22:12:48,961 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 22:12:48,961 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 22:12:48,961 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 22:12:48,961 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,961 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,961 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,961 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 22:12:48,962 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,963 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 22:12:48,964 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,965 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 22:12:48,966 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 22:12:48,967 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 22:12:48,968 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,969 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 22:12:48,970 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 22:12:48,971 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 22:12:48,971 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 22:12:48,971 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 22:12:48,971 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse9 (<= |old(~a19~0)| ~a19~0)) (.cse10 (<= ~a10~0 |old(~a10~0)|)) (.cse11 (<= |old(~a10~0)| ~a10~0)) (.cse8 (<= |old(~a1~0)| ~a1~0)) (.cse12 (<= ~a19~0 |old(~a19~0)|))) (let ((.cse0 (not (<= |old(~a1~0)| 23))) (.cse4 (and .cse9 .cse10 (<= ~a1~0 |old(~a1~0)|) .cse11 .cse8 .cse12)) (.cse5 (not (<= |old(~a19~0)| 8))) (.cse7 (not (<= |old(~a10~0)| 0))) (.cse1 (not (= 0 ~a12~0))) (.cse2 (not (= 14 ~a4~0))) (.cse3 (and .cse9 .cse10 .cse11 .cse12 (= ~a1~0 |old(~a1~0)|))) (.cse6 (not (<= |old(~a19~0)| 7)))) (and (or (not (< 0 |old(~a10~0)|)) .cse0 .cse1 .cse2 .cse3) (or .cse4 .cse5 (not (<= 2 |old(~a10~0)|))) (or .cse6 (<= ~a10~0 0) .cse7) (or .cse6 .cse0 (<= ~a1~0 23)) (or .cse4 .cse5 (forall ((v_prenex_3 Int)) (or (not (<= (+ (div v_prenex_3 5) 331501) |old(~a1~0)|)) (not (<= 0 v_prenex_3)) (not (<= 23 v_prenex_3))))) (or (not (<= 23 |old(~a1~0)|)) .cse4 .cse5 .cse7) (or .cse1 .cse2 .cse3 (forall ((v_~a1~0_444 Int)) (or (not (< 0 (+ v_~a1~0_444 13))) (not (<= (+ (div v_~a1~0_444 5) 331501) |old(~a1~0)|)) (not (= 0 (mod v_~a1~0_444 5)))))) (or .cse1 (not (<= 9 |old(~a19~0)|)) .cse2 .cse3) (or .cse6 (and .cse8 (<= ~a19~0 7)))))) [2020-07-20 22:12:48,971 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 22:12:48,971 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 22:12:48,971 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 22:12:48,972 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 22:12:48,973 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 22:12:48,974 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 22:12:48,975 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 22:12:48,976 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 22:12:48,977 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (= 14 ~a4~0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 0 ~a12~0) (= 23 ~a1~0)) [2020-07-20 22:12:48,978 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 22:12:48,978 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 22:12:48,978 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (= 0 ~a12~0)) (not (<= 9 |old(~a19~0)|)) (not (= 14 ~a4~0)) (and (<= |old(~a19~0)| ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) (not (<= |old(~a19~0)| 9))) [2020-07-20 22:12:48,978 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:12:48,978 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (<= 9 ~a19~0) (exists ((v_~a1~0_444 Int)) (and (= 0 (mod v_~a1~0_444 5)) (< 0 (+ v_~a1~0_444 13)) (<= (+ (div v_~a1~0_444 5) 331501) ~a1~0))) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (= 0 ~a12~0)) (and (<= ~a1~0 23) (< 0 ~a10~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (<= 2 ~a10~0) (and (<= ~a10~0 0) (<= 23 ~a1~0)) (<= ~a19~0 7)) [2020-07-20 22:12:48,978 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 22:12:48,978 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 22:12:48,979 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (<= 9 ~a19~0) (exists ((v_~a1~0_444 Int)) (and (= 0 (mod v_~a1~0_444 5)) (< 0 (+ v_~a1~0_444 13)) (<= (+ (div v_~a1~0_444 5) 331501) ~a1~0))) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (not (= 0 ~a12~0)) (and (<= ~a1~0 23) (< 0 ~a10~0)) (not (= 14 ~a4~0)) (not (<= |old(~a19~0)| 9)) (<= 2 ~a10~0) (and (<= ~a10~0 0) (<= 23 ~a1~0)) (<= ~a19~0 7)) [2020-07-20 22:12:48,979 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 22:12:48,989 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:48,990 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:48,990 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,001 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,001 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,002 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 10:12:49 BoogieIcfgContainer [2020-07-20 22:12:49,008 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 22:12:49,017 INFO L168 Benchmark]: Toolchain (without parser) took 289991.01 ms. Allocated memory was 145.2 MB in the beginning and 537.4 MB in the end (delta: 392.2 MB). Free memory was 101.5 MB in the beginning and 164.1 MB in the end (delta: -62.6 MB). Peak memory consumption was 401.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:12:49,020 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 22:12:49,020 INFO L168 Benchmark]: CACSL2BoogieTranslator took 765.35 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 101.3 MB in the beginning and 171.4 MB in the end (delta: -70.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. [2020-07-20 22:12:49,021 INFO L168 Benchmark]: Boogie Preprocessor took 114.14 ms. Allocated memory is still 205.0 MB. Free memory was 171.4 MB in the beginning and 166.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:12:49,022 INFO L168 Benchmark]: RCFGBuilder took 1311.93 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 181.7 MB in the end (delta: -15.3 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. [2020-07-20 22:12:49,022 INFO L168 Benchmark]: TraceAbstraction took 287793.34 ms. Allocated memory was 238.0 MB in the beginning and 537.4 MB in the end (delta: 299.4 MB). Free memory was 181.7 MB in the beginning and 164.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 388.5 MB. Max. memory is 7.1 GB. [2020-07-20 22:12:49,032 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 765.35 ms. Allocated memory was 145.2 MB in the beginning and 205.0 MB in the end (delta: 59.8 MB). Free memory was 101.3 MB in the beginning and 171.4 MB in the end (delta: -70.1 MB). Peak memory consumption was 31.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.14 ms. Allocated memory is still 205.0 MB. Free memory was 171.4 MB in the beginning and 166.4 MB in the end (delta: 5.0 MB). Peak memory consumption was 5.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1311.93 ms. Allocated memory was 205.0 MB in the beginning and 238.0 MB in the end (delta: 33.0 MB). Free memory was 166.4 MB in the beginning and 181.7 MB in the end (delta: -15.3 MB). Peak memory consumption was 83.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 287793.34 ms. Allocated memory was 238.0 MB in the beginning and 537.4 MB in the end (delta: 299.4 MB). Free memory was 181.7 MB in the beginning and 164.1 MB in the end (delta: 17.6 MB). Peak memory consumption was 388.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 118]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant [2020-07-20 22:12:49,038 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,039 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,039 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] [2020-07-20 22:12:49,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_~a1~0_444,QUANTIFIED] Derived loop invariant: ((((((((((9 <= a19 || (\exists v_~a1~0_444 : int :: (0 == v_~a1~0_444 % 5 && 0 < v_~a1~0_444 + 13) && v_~a1~0_444 / 5 + 331501 <= a1)) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(9 <= \old(a19))) || !(0 == a12)) || (a1 <= 23 && 0 < a10)) || !(14 == a4)) || !(\old(a19) <= 9)) || 2 <= a10) || (a10 <= 0 && 23 <= a1)) || a19 <= 7 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 270.3s, OverallIterations: 14, TraceHistogramMax: 5, AutomataDifference: 221.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 17.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 876 SDtfs, 4593 SDslu, 559 SDs, 0 SdLazy, 12288 SolverSat, 1788 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 26.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4896 GetRequests, 4790 SyntacticMatches, 9 SemanticMatches, 97 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 204.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6410occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 1.1s AutomataMinimizationTime, 14 MinimizatonAttempts, 4187 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 294 PreInvPairs, 388 NumberOfFragments, 459 HoareAnnotationTreeSize, 294 FomulaSimplifications, 64374 FormulaSimplificationTreeSizeReduction, 1.7s HoareSimplificationTime, 7 FomulaSimplificationsInter, 18432 FormulaSimplificationTreeSizeReductionInter, 15.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 42.8s InterpolantComputationTime, 3230 NumberOfCodeBlocks, 3230 NumberOfCodeBlocksAsserted, 56 NumberOfCheckSat, 4313 ConstructedInterpolants, 92 QuantifiedInterpolants, 3612301 SizeOfPredicates, 27 NumberOfNonLiveVariables, 5740 ConjunctsInSsa, 97 ConjunctsInUnsatCore, 18 InterpolantComputations, 7 PerfectInterpolantSequences, 4374/4589 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...