/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 BIGGEST_EQUIVALENCE_CLASS --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/Problem01_label31.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 01:19:51,552 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 01:19:51,554 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 01:19:51,566 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-21 01:19:51,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 01:19:51,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 01:19:51,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 01:19:51,578 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 01:19:51,579 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 01:19:51,580 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 01:19:51,581 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 01:19:51,583 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 01:19:51,585 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 01:19:51,586 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 01:19:51,587 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 01:19:51,588 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 01:19:51,590 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 01:19:51,598 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 01:19:51,599 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 01:19:51,599 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 01:19:51,600 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-21 01:19:51,615 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 01:19:51,615 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 01:19:51,616 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 01:19:51,616 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 01:19:51,616 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 01:19:51,617 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 01:19:51,617 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 01:19:51,617 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 01:19:51,617 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 01:19:51,617 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 01:19:51,617 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 01:19:51,618 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 01:19:51,618 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 01:19:51,618 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 01:19:51,618 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 01:19:51,618 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 01:19:51,619 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 01:19:51,619 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 01:19:51,619 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 01:19:51,619 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 01:19:51,619 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 01:19:51,620 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:19:51,620 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 01:19:51,620 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 01:19:51,620 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 01:19:51,620 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 01:19:51,621 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:51,621 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 01:19:51,621 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 01:19:51,621 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 -> BIGGEST_EQUIVALENCE_CLASS 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 [2020-07-21 01:19:51,948 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 01:19:51,967 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 01:19:51,973 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 01:19:51,979 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 01:19:51,979 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 01:19:51,980 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-07-21 01:19:52,047 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec9ef34c/18326914482045e8bd43745552c6fb0e/FLAGabcd77817 [2020-07-21 01:19:52,616 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 01:19:52,619 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label31.c [2020-07-21 01:19:52,638 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec9ef34c/18326914482045e8bd43745552c6fb0e/FLAGabcd77817 [2020-07-21 01:19:52,894 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9ec9ef34c/18326914482045e8bd43745552c6fb0e [2020-07-21 01:19:52,907 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 01:19:52,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 01:19:52,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 01:19:52,912 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 01:19:52,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 01:19:52,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:52" (1/1) ... [2020-07-21 01:19:52,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4dffb5e0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:52, skipping insertion in model container [2020-07-21 01:19:52,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 01:19:52" (1/1) ... [2020-07-21 01:19:52,932 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 01:19:52,980 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 01:19:53,518 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:19:53,524 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 01:19:53,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 01:19:53,661 INFO L208 MainTranslator]: Completed translation [2020-07-21 01:19:53,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53 WrapperNode [2020-07-21 01:19:53,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 01:19:53,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 01:19:53,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 01:19:53,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 01:19:53,677 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... [2020-07-21 01:19:53,677 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... [2020-07-21 01:19:53,695 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... [2020-07-21 01:19:53,696 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... [2020-07-21 01:19:53,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... [2020-07-21 01:19:53,757 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... [2020-07-21 01:19:53,763 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... [2020-07-21 01:19:53,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 01:19:53,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 01:19:53,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 01:19:53,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 01:19:53,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 01:19:53,861 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 01:19:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 01:19:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 01:19:53,862 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 01:19:53,862 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 01:19:53,863 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 01:19:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 01:19:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 01:19:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 01:19:53,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 01:19:53,865 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 01:19:55,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 01:19:55,243 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 01:19:55,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:55 BoogieIcfgContainer [2020-07-21 01:19:55,250 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 01:19:55,251 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 01:19:55,252 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 01:19:55,255 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 01:19:55,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 01:19:52" (1/3) ... [2020-07-21 01:19:55,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57365783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:55, skipping insertion in model container [2020-07-21 01:19:55,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 01:19:53" (2/3) ... [2020-07-21 01:19:55,257 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@57365783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 01:19:55, skipping insertion in model container [2020-07-21 01:19:55,257 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 01:19:55" (3/3) ... [2020-07-21 01:19:55,260 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label31.c [2020-07-21 01:19:55,271 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 01:19:55,281 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 01:19:55,296 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 01:19:55,323 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 01:19:55,324 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 01:19:55,324 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 01:19:55,324 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 01:19:55,324 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 01:19:55,325 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 01:19:55,325 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 01:19:55,325 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 01:19:55,348 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-21 01:19:55,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-07-21 01:19:55,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:55,361 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:19:55,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:55,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:55,368 INFO L82 PathProgramCache]: Analyzing trace with hash 1379021910, now seen corresponding path program 1 times [2020-07-21 01:19:55,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:55,378 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140960181] [2020-07-21 01:19:55,379 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 [2020-07-21 01:19:55,560 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:19:55,560 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:55,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 68 conjunts are in the unsatisfiable core [2020-07-21 01:19:55,576 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:55,905 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 31 [2020-07-21 01:19:56,162 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 28 [2020-07-21 01:19:56,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:56,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:19:56,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140960181] [2020-07-21 01:19:56,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:19:56,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-21 01:19:56,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549155939] [2020-07-21 01:19:56,462 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-21 01:19:56,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:19:56,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-21 01:19:56,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:19:56,481 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 11 states. [2020-07-21 01:19:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:19:58,199 INFO L93 Difference]: Finished difference Result 472 states and 791 transitions. [2020-07-21 01:19:58,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:19:58,204 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 98 [2020-07-21 01:19:58,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:19:58,217 INFO L225 Difference]: With dead ends: 472 [2020-07-21 01:19:58,217 INFO L226 Difference]: Without dead ends: 203 [2020-07-21 01:19:58,224 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=170, Unknown=0, NotChecked=0, Total=272 [2020-07-21 01:19:58,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-07-21 01:19:58,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2020-07-21 01:19:58,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-07-21 01:19:58,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 275 transitions. [2020-07-21 01:19:58,286 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 275 transitions. Word has length 98 [2020-07-21 01:19:58,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:19:58,287 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 275 transitions. [2020-07-21 01:19:58,287 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-21 01:19:58,288 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 275 transitions. [2020-07-21 01:19:58,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-07-21 01:19:58,293 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:19:58,293 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 01:19:58,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:19:58,509 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:19:58,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:19:58,510 INFO L82 PathProgramCache]: Analyzing trace with hash -785037199, now seen corresponding path program 1 times [2020-07-21 01:19:58,511 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:19:58,512 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967482031] [2020-07-21 01:19:58,512 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 [2020-07-21 01:19:58,628 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:19:58,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:19:58,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 48 conjunts are in the unsatisfiable core [2020-07-21 01:19:58,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:19:59,264 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:19:59,269 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[3, 2, 1] term [2020-07-21 01:19:59,269 INFO L501 QuantifierPusher]: Distributing 1 conjuncts over 2 disjuncts [2020-07-21 01:19:59,360 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:19:59,361 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:00,052 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 38 [2020-07-21 01:20:00,232 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:20:00,384 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 40 [2020-07-21 01:20:00,530 WARN L193 SmtUtils]: Spent 130.00 ms on a formula simplification that was a NOOP. DAG size: 48 [2020-07-21 01:20:00,537 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 7 conjuncts [2020-07-21 01:20:00,539 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 6 conjuncts [2020-07-21 01:20:00,543 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:20:00,547 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:20:00,550 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:00,551 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 2 conjuncts [2020-07-21 01:20:00,563 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 5 conjuncts [2020-07-21 01:20:00,570 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 4 conjuncts [2020-07-21 01:20:00,572 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:00,587 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:00,590 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:00,595 INFO L501 QuantifierPusher]: Distributing 14 disjuncts over 3 conjuncts [2020-07-21 01:20:00,598 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:00,601 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:00,603 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:00,611 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:00,613 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:00,617 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:00,620 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:00,622 INFO L501 QuantifierPusher]: Distributing 8 disjuncts over 3 conjuncts [2020-07-21 01:20:00,623 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:00,638 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:00,639 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:00,642 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 3 conjuncts [2020-07-21 01:20:00,643 INFO L501 QuantifierPusher]: Distributing 7 disjuncts over 2 conjuncts [2020-07-21 01:20:01,229 WARN L193 SmtUtils]: Spent 525.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 37 [2020-07-21 01:20:01,233 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 8, 6, 7, 1] term [2020-07-21 01:20:01,234 INFO L501 QuantifierPusher]: Distributing 6 disjuncts over 2 conjuncts [2020-07-21 01:20:01,306 INFO L501 QuantifierPusher]: Distributing 3 disjuncts over 2 conjuncts [2020-07-21 01:20:01,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:01,368 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:01,397 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:01,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:01,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967482031] [2020-07-21 01:20:01,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:01,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 25 [2020-07-21 01:20:01,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780075703] [2020-07-21 01:20:01,601 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-07-21 01:20:01,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:01,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-07-21 01:20:01,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2020-07-21 01:20:01,611 INFO L87 Difference]: Start difference. First operand 203 states and 275 transitions. Second operand 25 states. [2020-07-21 01:20:02,673 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 36 [2020-07-21 01:20:03,228 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 33 [2020-07-21 01:20:03,524 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification. DAG size of input: 43 DAG size of output: 42 [2020-07-21 01:20:04,000 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 39 [2020-07-21 01:20:04,222 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-07-21 01:20:04,701 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-07-21 01:20:07,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:07,286 INFO L93 Difference]: Finished difference Result 588 states and 878 transitions. [2020-07-21 01:20:07,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-07-21 01:20:07,291 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 106 [2020-07-21 01:20:07,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:07,298 INFO L225 Difference]: With dead ends: 588 [2020-07-21 01:20:07,298 INFO L226 Difference]: Without dead ends: 451 [2020-07-21 01:20:07,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 184 SyntacticMatches, 4 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 540 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=551, Invalid=1611, Unknown=0, NotChecked=0, Total=2162 [2020-07-21 01:20:07,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451 states. [2020-07-21 01:20:07,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451 to 417. [2020-07-21 01:20:07,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-07-21 01:20:07,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 548 transitions. [2020-07-21 01:20:07,347 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 548 transitions. Word has length 106 [2020-07-21 01:20:07,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:07,348 INFO L479 AbstractCegarLoop]: Abstraction has 417 states and 548 transitions. [2020-07-21 01:20:07,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-07-21 01:20:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 548 transitions. [2020-07-21 01:20:07,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-07-21 01:20:07,352 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:07,353 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-07-21 01:20:07,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:07,564 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:07,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:07,565 INFO L82 PathProgramCache]: Analyzing trace with hash -620983057, now seen corresponding path program 1 times [2020-07-21 01:20:07,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:07,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284792950] [2020-07-21 01:20:07,567 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 [2020-07-21 01:20:07,688 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:20:07,688 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:07,689 INFO L263 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:20:07,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:07,736 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:07,737 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:20:07,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284792950] [2020-07-21 01:20:07,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:20:07,737 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:20:07,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140000923] [2020-07-21 01:20:07,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:20:07,742 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:07,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:20:07,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:07,742 INFO L87 Difference]: Start difference. First operand 417 states and 548 transitions. Second operand 3 states. [2020-07-21 01:20:08,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:08,317 INFO L93 Difference]: Finished difference Result 1042 states and 1433 transitions. [2020-07-21 01:20:08,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:20:08,318 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 109 [2020-07-21 01:20:08,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:08,327 INFO L225 Difference]: With dead ends: 1042 [2020-07-21 01:20:08,327 INFO L226 Difference]: Without dead ends: 691 [2020-07-21 01:20:08,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:08,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2020-07-21 01:20:08,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2020-07-21 01:20:08,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 691 states. [2020-07-21 01:20:08,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 897 transitions. [2020-07-21 01:20:08,395 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 897 transitions. Word has length 109 [2020-07-21 01:20:08,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:08,396 INFO L479 AbstractCegarLoop]: Abstraction has 691 states and 897 transitions. [2020-07-21 01:20:08,396 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:20:08,396 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 897 transitions. [2020-07-21 01:20:08,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-07-21 01:20:08,402 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:08,402 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:08,618 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:08,619 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:08,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:08,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1365830830, now seen corresponding path program 1 times [2020-07-21 01:20:08,620 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:08,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617547611] [2020-07-21 01:20:08,620 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 [2020-07-21 01:20:08,743 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 1 check-sat command(s) [2020-07-21 01:20:08,743 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:08,744 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:20:08,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:08,816 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:09,036 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:20:09,083 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:09,084 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 01:20:09,085 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:09,088 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:09,089 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:09,090 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 29 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 01:20:09,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617547611] [2020-07-21 01:20:09,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:09,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:09,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1299571524] [2020-07-21 01:20:09,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:09,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:09,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:09,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:09,189 INFO L87 Difference]: Start difference. First operand 691 states and 897 transitions. Second operand 7 states. [2020-07-21 01:20:10,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:10,694 INFO L93 Difference]: Finished difference Result 1933 states and 2552 transitions. [2020-07-21 01:20:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 01:20:10,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-07-21 01:20:10,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:10,701 INFO L225 Difference]: With dead ends: 1933 [2020-07-21 01:20:10,701 INFO L226 Difference]: Without dead ends: 1169 [2020-07-21 01:20:10,703 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 244 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 01:20:10,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1169 states. [2020-07-21 01:20:10,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1169 to 1106. [2020-07-21 01:20:10,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1106 states. [2020-07-21 01:20:10,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1106 states to 1106 states and 1302 transitions. [2020-07-21 01:20:10,747 INFO L78 Accepts]: Start accepts. Automaton has 1106 states and 1302 transitions. Word has length 124 [2020-07-21 01:20:10,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:10,748 INFO L479 AbstractCegarLoop]: Abstraction has 1106 states and 1302 transitions. [2020-07-21 01:20:10,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:10,748 INFO L276 IsEmpty]: Start isEmpty. Operand 1106 states and 1302 transitions. [2020-07-21 01:20:10,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-21 01:20:10,754 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:10,754 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:10,967 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:10,968 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:10,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1656932566, now seen corresponding path program 1 times [2020-07-21 01:20:10,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:10,969 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2096574547] [2020-07-21 01:20:10,969 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 [2020-07-21 01:20:11,090 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:20:11,090 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:11,093 INFO L263 TraceCheckSpWp]: Trace formula consists of 350 conjuncts, 29 conjunts are in the unsatisfiable core [2020-07-21 01:20:11,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:11,159 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 51 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:20:11,159 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:11,358 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:20:11,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:11,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:11,407 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:11,408 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 2, 2, 1] term [2020-07-21 01:20:11,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:11,409 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:20:11,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:11,410 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:11,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:11,412 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:11,412 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:11,412 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:11,413 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:11,588 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-21 01:20:11,588 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2096574547] [2020-07-21 01:20:11,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 01:20:11,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 7 [2020-07-21 01:20:11,589 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713745673] [2020-07-21 01:20:11,589 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 01:20:11,590 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:11,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 01:20:11,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:11,590 INFO L87 Difference]: Start difference. First operand 1106 states and 1302 transitions. Second operand 5 states. [2020-07-21 01:20:12,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:12,462 INFO L93 Difference]: Finished difference Result 3121 states and 3747 transitions. [2020-07-21 01:20:12,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 01:20:12,463 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 154 [2020-07-21 01:20:12,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:12,481 INFO L225 Difference]: With dead ends: 3121 [2020-07-21 01:20:12,481 INFO L226 Difference]: Without dead ends: 1944 [2020-07-21 01:20:12,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 302 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:20:12,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1944 states. [2020-07-21 01:20:12,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1944 to 1944. [2020-07-21 01:20:12,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1944 states. [2020-07-21 01:20:12,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1944 states to 1944 states and 2224 transitions. [2020-07-21 01:20:12,561 INFO L78 Accepts]: Start accepts. Automaton has 1944 states and 2224 transitions. Word has length 154 [2020-07-21 01:20:12,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:12,562 INFO L479 AbstractCegarLoop]: Abstraction has 1944 states and 2224 transitions. [2020-07-21 01:20:12,562 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 01:20:12,562 INFO L276 IsEmpty]: Start isEmpty. Operand 1944 states and 2224 transitions. [2020-07-21 01:20:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-07-21 01:20:12,569 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:12,569 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:12,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:12,783 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:12,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:12,783 INFO L82 PathProgramCache]: Analyzing trace with hash -839439291, now seen corresponding path program 1 times [2020-07-21 01:20:12,783 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:12,784 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [19439918] [2020-07-21 01:20:12,784 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 [2020-07-21 01:20:12,898 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:20:12,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:12,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 408 conjuncts, 16 conjunts are in the unsatisfiable core [2020-07-21 01:20:12,903 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:12,931 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 6, 1] term [2020-07-21 01:20:12,932 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:20:12,984 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 76 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:20:12,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:13,185 WARN L193 SmtUtils]: Spent 145.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 39 [2020-07-21 01:20:13,236 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,237 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,238 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 01:20:13,238 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:13,239 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:13,239 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,241 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,242 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:13,242 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,271 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:13,335 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:13,338 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:13,522 INFO L134 CoverageAnalysis]: Checked inductivity of 95 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 01:20:13,523 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [19439918] [2020-07-21 01:20:13,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:13,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 6] total 8 [2020-07-21 01:20:13,524 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754362825] [2020-07-21 01:20:13,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 01:20:13,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:13,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 01:20:13,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 01:20:13,525 INFO L87 Difference]: Start difference. First operand 1944 states and 2224 transitions. Second operand 8 states. [2020-07-21 01:20:14,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:14,522 INFO L93 Difference]: Finished difference Result 4944 states and 5813 transitions. [2020-07-21 01:20:14,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 01:20:14,523 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 171 [2020-07-21 01:20:14,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:14,540 INFO L225 Difference]: With dead ends: 4944 [2020-07-21 01:20:14,540 INFO L226 Difference]: Without dead ends: 2927 [2020-07-21 01:20:14,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 345 GetRequests, 335 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:20:14,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2927 states. [2020-07-21 01:20:14,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2927 to 2639. [2020-07-21 01:20:14,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2639 states. [2020-07-21 01:20:14,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2639 states to 2639 states and 3047 transitions. [2020-07-21 01:20:14,640 INFO L78 Accepts]: Start accepts. Automaton has 2639 states and 3047 transitions. Word has length 171 [2020-07-21 01:20:14,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:14,641 INFO L479 AbstractCegarLoop]: Abstraction has 2639 states and 3047 transitions. [2020-07-21 01:20:14,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 01:20:14,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2639 states and 3047 transitions. [2020-07-21 01:20:14,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 206 [2020-07-21 01:20:14,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:14,650 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-07-21 01:20:14,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:14,865 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:14,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:14,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1163748773, now seen corresponding path program 1 times [2020-07-21 01:20:14,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:14,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296329299] [2020-07-21 01:20:14,867 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 [2020-07-21 01:20:14,994 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-21 01:20:14,994 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:14,996 INFO L263 TraceCheckSpWp]: Trace formula consists of 379 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:20:15,009 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:15,058 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 154 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:20:15,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:15,149 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 141 proven. 15 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-07-21 01:20:15,150 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296329299] [2020-07-21 01:20:15,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:15,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:15,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382009090] [2020-07-21 01:20:15,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:15,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:15,152 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:15,152 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:15,152 INFO L87 Difference]: Start difference. First operand 2639 states and 3047 transitions. Second operand 7 states. [2020-07-21 01:20:16,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:16,372 INFO L93 Difference]: Finished difference Result 5623 states and 6534 transitions. [2020-07-21 01:20:16,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 01:20:16,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 205 [2020-07-21 01:20:16,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:16,391 INFO L225 Difference]: With dead ends: 5623 [2020-07-21 01:20:16,391 INFO L226 Difference]: Without dead ends: 3050 [2020-07-21 01:20:16,398 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 407 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:20:16,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3050 states. [2020-07-21 01:20:16,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3050 to 2093. [2020-07-21 01:20:16,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2093 states. [2020-07-21 01:20:16,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2093 states to 2093 states and 2375 transitions. [2020-07-21 01:20:16,458 INFO L78 Accepts]: Start accepts. Automaton has 2093 states and 2375 transitions. Word has length 205 [2020-07-21 01:20:16,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:16,458 INFO L479 AbstractCegarLoop]: Abstraction has 2093 states and 2375 transitions. [2020-07-21 01:20:16,459 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:16,459 INFO L276 IsEmpty]: Start isEmpty. Operand 2093 states and 2375 transitions. [2020-07-21 01:20:16,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-07-21 01:20:16,466 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:16,466 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:16,679 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:16,680 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:16,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:16,680 INFO L82 PathProgramCache]: Analyzing trace with hash 1790490479, now seen corresponding path program 1 times [2020-07-21 01:20:16,680 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:16,680 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1341508154] [2020-07-21 01:20:16,681 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 [2020-07-21 01:20:16,818 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:20:16,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:16,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 497 conjuncts, 25 conjunts are in the unsatisfiable core [2020-07-21 01:20:16,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:16,932 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 149 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:20:16,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:17,116 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 38 [2020-07-21 01:20:17,158 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:17,159 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:17,160 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:17,160 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[4, 2, 1] term [2020-07-21 01:20:17,160 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:17,161 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:17,161 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:17,405 INFO L134 CoverageAnalysis]: Checked inductivity of 201 backedges. 122 proven. 31 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-07-21 01:20:17,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1341508154] [2020-07-21 01:20:17,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:17,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 12 [2020-07-21 01:20:17,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466450887] [2020-07-21 01:20:17,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 01:20:17,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:17,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 01:20:17,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:20:17,407 INFO L87 Difference]: Start difference. First operand 2093 states and 2375 transitions. Second operand 12 states. [2020-07-21 01:20:19,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:19,661 INFO L93 Difference]: Finished difference Result 5548 states and 6452 transitions. [2020-07-21 01:20:19,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 01:20:19,664 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 227 [2020-07-21 01:20:19,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:19,683 INFO L225 Difference]: With dead ends: 5548 [2020-07-21 01:20:19,683 INFO L226 Difference]: Without dead ends: 3521 [2020-07-21 01:20:19,690 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 468 GetRequests, 442 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=188, Invalid=514, Unknown=0, NotChecked=0, Total=702 [2020-07-21 01:20:19,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2020-07-21 01:20:19,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3203. [2020-07-21 01:20:19,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3203 states. [2020-07-21 01:20:19,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 3607 transitions. [2020-07-21 01:20:19,781 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 3607 transitions. Word has length 227 [2020-07-21 01:20:19,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:19,781 INFO L479 AbstractCegarLoop]: Abstraction has 3203 states and 3607 transitions. [2020-07-21 01:20:19,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 01:20:19,782 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 3607 transitions. [2020-07-21 01:20:19,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2020-07-21 01:20:19,791 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:19,791 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 01:20:20,006 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:20,007 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:20,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:20,008 INFO L82 PathProgramCache]: Analyzing trace with hash -2097217942, now seen corresponding path program 1 times [2020-07-21 01:20:20,008 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:20,008 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1373533523] [2020-07-21 01:20:20,008 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 [2020-07-21 01:20:20,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:20:20,237 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:20,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 628 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:20:20,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:20,291 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 139 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:20:20,291 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:20:20,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1373533523] [2020-07-21 01:20:20,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:20:20,291 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:20:20,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118238549] [2020-07-21 01:20:20,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:20:20,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:20,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:20:20,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:20,293 INFO L87 Difference]: Start difference. First operand 3203 states and 3607 transitions. Second operand 3 states. [2020-07-21 01:20:20,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:20,817 INFO L93 Difference]: Finished difference Result 6612 states and 7453 transitions. [2020-07-21 01:20:20,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:20:20,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 240 [2020-07-21 01:20:20,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:20,838 INFO L225 Difference]: With dead ends: 6612 [2020-07-21 01:20:20,838 INFO L226 Difference]: Without dead ends: 3475 [2020-07-21 01:20:20,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 239 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:20,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3475 states. [2020-07-21 01:20:20,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3475 to 3203. [2020-07-21 01:20:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3203 states. [2020-07-21 01:20:20,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3203 states to 3203 states and 3604 transitions. [2020-07-21 01:20:20,916 INFO L78 Accepts]: Start accepts. Automaton has 3203 states and 3604 transitions. Word has length 240 [2020-07-21 01:20:20,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:20,917 INFO L479 AbstractCegarLoop]: Abstraction has 3203 states and 3604 transitions. [2020-07-21 01:20:20,917 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:20:20,917 INFO L276 IsEmpty]: Start isEmpty. Operand 3203 states and 3604 transitions. [2020-07-21 01:20:20,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-07-21 01:20:20,926 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:20,927 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 01:20:21,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:21,142 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:21,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:21,143 INFO L82 PathProgramCache]: Analyzing trace with hash -341998397, now seen corresponding path program 1 times [2020-07-21 01:20:21,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:21,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [635958512] [2020-07-21 01:20:21,144 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 [2020-07-21 01:20:21,309 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:20:21,310 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:21,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 13 conjunts are in the unsatisfiable core [2020-07-21 01:20:21,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:21,384 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:20:21,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:21,535 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 1] term [2020-07-21 01:20:21,535 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:21,684 INFO L134 CoverageAnalysis]: Checked inductivity of 344 backedges. 231 proven. 2 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 01:20:21,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [635958512] [2020-07-21 01:20:21,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:21,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:21,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930714852] [2020-07-21 01:20:21,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:21,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:21,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:21,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:21,686 INFO L87 Difference]: Start difference. First operand 3203 states and 3604 transitions. Second operand 7 states. [2020-07-21 01:20:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:22,945 INFO L93 Difference]: Finished difference Result 6485 states and 7299 transitions. [2020-07-21 01:20:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:20:22,946 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-07-21 01:20:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:22,958 INFO L225 Difference]: With dead ends: 6485 [2020-07-21 01:20:22,958 INFO L226 Difference]: Without dead ends: 3205 [2020-07-21 01:20:22,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 535 GetRequests, 524 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2020-07-21 01:20:22,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3205 states. [2020-07-21 01:20:23,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3205 to 3197. [2020-07-21 01:20:23,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3197 states. [2020-07-21 01:20:23,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3197 states to 3197 states and 3462 transitions. [2020-07-21 01:20:23,036 INFO L78 Accepts]: Start accepts. Automaton has 3197 states and 3462 transitions. Word has length 263 [2020-07-21 01:20:23,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:23,037 INFO L479 AbstractCegarLoop]: Abstraction has 3197 states and 3462 transitions. [2020-07-21 01:20:23,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:23,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3197 states and 3462 transitions. [2020-07-21 01:20:23,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 293 [2020-07-21 01:20:23,048 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:23,048 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-07-21 01:20:23,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:23,262 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:23,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:23,262 INFO L82 PathProgramCache]: Analyzing trace with hash 1276949654, now seen corresponding path program 1 times [2020-07-21 01:20:23,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:23,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453527191] [2020-07-21 01:20:23,263 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 [2020-07-21 01:20:23,420 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-21 01:20:23,420 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:23,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 698 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 01:20:23,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:23,448 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 3, 1] term [2020-07-21 01:20:23,449 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 01:20:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-07-21 01:20:23,555 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 01:20:23,674 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:23,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:23,675 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 01:20:23,710 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 01:20:23,962 INFO L134 CoverageAnalysis]: Checked inductivity of 479 backedges. 283 proven. 2 refuted. 0 times theorem prover too weak. 194 trivial. 0 not checked. [2020-07-21 01:20:23,963 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453527191] [2020-07-21 01:20:23,963 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 01:20:23,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2020-07-21 01:20:23,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145634140] [2020-07-21 01:20:23,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-21 01:20:23,966 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:23,966 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-21 01:20:23,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 01:20:23,966 INFO L87 Difference]: Start difference. First operand 3197 states and 3462 transitions. Second operand 7 states. [2020-07-21 01:20:25,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:25,393 INFO L93 Difference]: Finished difference Result 6642 states and 7250 transitions. [2020-07-21 01:20:25,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-21 01:20:25,394 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 292 [2020-07-21 01:20:25,395 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:25,407 INFO L225 Difference]: With dead ends: 6642 [2020-07-21 01:20:25,407 INFO L226 Difference]: Without dead ends: 3511 [2020-07-21 01:20:25,414 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 591 GetRequests, 581 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-07-21 01:20:25,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3511 states. [2020-07-21 01:20:25,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3511 to 3471. [2020-07-21 01:20:25,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3471 states. [2020-07-21 01:20:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3471 states to 3471 states and 3740 transitions. [2020-07-21 01:20:25,541 INFO L78 Accepts]: Start accepts. Automaton has 3471 states and 3740 transitions. Word has length 292 [2020-07-21 01:20:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:25,542 INFO L479 AbstractCegarLoop]: Abstraction has 3471 states and 3740 transitions. [2020-07-21 01:20:25,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-21 01:20:25,543 INFO L276 IsEmpty]: Start isEmpty. Operand 3471 states and 3740 transitions. [2020-07-21 01:20:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 313 [2020-07-21 01:20:25,558 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 01:20:25,558 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 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, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 01:20:25,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:25,774 INFO L427 AbstractCegarLoop]: === Iteration 12 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 01:20:25,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 01:20:25,775 INFO L82 PathProgramCache]: Analyzing trace with hash -1917531074, now seen corresponding path program 1 times [2020-07-21 01:20:25,775 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 01:20:25,775 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714633699] [2020-07-21 01:20:25,776 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 [2020-07-21 01:20:25,996 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-21 01:20:25,997 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 01:20:25,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 803 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 01:20:26,003 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 01:20:26,079 INFO L134 CoverageAnalysis]: Checked inductivity of 539 backedges. 211 proven. 0 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2020-07-21 01:20:26,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 01:20:26,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714633699] [2020-07-21 01:20:26,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 01:20:26,080 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 01:20:26,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182383369] [2020-07-21 01:20:26,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 01:20:26,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 01:20:26,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 01:20:26,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:26,082 INFO L87 Difference]: Start difference. First operand 3471 states and 3740 transitions. Second operand 3 states. [2020-07-21 01:20:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 01:20:26,577 INFO L93 Difference]: Finished difference Result 5901 states and 6356 transitions. [2020-07-21 01:20:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 01:20:26,578 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 312 [2020-07-21 01:20:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 01:20:26,579 INFO L225 Difference]: With dead ends: 5901 [2020-07-21 01:20:26,579 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 01:20:26,589 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 310 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 01:20:26,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 01:20:26,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 01:20:26,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 01:20:26,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 01:20:26,590 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 312 [2020-07-21 01:20:26,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 01:20:26,590 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 01:20:26,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 01:20:26,590 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 01:20:26,591 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 01:20:26,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 01:20:26,809 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 01:20:27,543 WARN L193 SmtUtils]: Spent 234.00 ms on a formula simplification. DAG size of input: 186 DAG size of output: 179 [2020-07-21 01:20:27,768 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 170 [2020-07-21 01:20:30,298 WARN L193 SmtUtils]: Spent 2.41 s on a formula simplification. DAG size of input: 224 DAG size of output: 100 [2020-07-21 01:20:31,238 WARN L193 SmtUtils]: Spent 889.00 ms on a formula simplification. DAG size of input: 197 DAG size of output: 59 [2020-07-21 01:20:32,081 WARN L193 SmtUtils]: Spent 840.00 ms on a formula simplification. DAG size of input: 188 DAG size of output: 59 [2020-07-21 01:20:32,086 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:20:32,087 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a16~0 |old(~a16~0)|) (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (<= |old(~a16~0)| ~a16~0) (= ~a20~0 |old(~a20~0)|) (= ~a21~0 |old(~a21~0)|)) [2020-07-21 01:20:32,087 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:20:32,087 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-21 01:20:32,088 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-21 01:20:32,088 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,088 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,088 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,088 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,088 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,089 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,089 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-21 01:20:32,089 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-21 01:20:32,089 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-21 01:20:32,089 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-21 01:20:32,089 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-21 01:20:32,090 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-21 01:20:32,090 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-21 01:20:32,090 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-21 01:20:32,090 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-21 01:20:32,090 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-21 01:20:32,090 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,091 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,091 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,091 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,091 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,091 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,091 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-21 01:20:32,091 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 452) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-21 01:20:32,092 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-21 01:20:32,093 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-21 01:20:32,094 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-21 01:20:32,095 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-21 01:20:32,096 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-21 01:20:32,097 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,098 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-21 01:20:32,099 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,100 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-21 01:20:32,101 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-21 01:20:32,102 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse6 (not (= 1 |old(~a20~0)|))) (.cse14 (<= ~a16~0 |old(~a16~0)|)) (.cse15 (= ~a7~0 |old(~a7~0)|)) (.cse0 (<= ~a8~0 13)) (.cse16 (= ~a17~0 |old(~a17~0)|)) (.cse17 (<= |old(~a16~0)| ~a16~0)) (.cse18 (= ~a20~0 |old(~a20~0)|)) (.cse22 (= ~a21~0 |old(~a21~0)|)) (.cse25 (= 1 |old(~a21~0)|)) (.cse2 (= 1 |old(~a17~0)|))) (let ((.cse7 (not (= 15 |old(~a8~0)|))) (.cse1 (not (<= |old(~a7~0)| 0))) (.cse11 (and (not (= 6 |calculate_output_#in~input|)) (not (= 1 |calculate_output_#in~input|)) (not (= 2 |calculate_output_#in~input|)) (not (= 4 |calculate_output_#in~input|)) (not (= 5 |calculate_output_#in~input|)) (not (= 3 |calculate_output_#in~input|)))) (.cse13 (= 15 ~a8~0)) (.cse5 (not (= 8 ~a12~0))) (.cse9 (not (< |old(~a16~0)| 6))) (.cse8 (not (< 4 |old(~a16~0)|))) (.cse10 (not .cse2)) (.cse19 (not (= 1 |old(~a7~0)|))) (.cse21 (= 1 ~a7~0)) (.cse23 (not (<= |old(~a16~0)| 5))) (.cse12 (not .cse25)) (.cse24 (and .cse14 .cse15 .cse0 .cse16 .cse17 .cse18 .cse22)) (.cse3 (not (<= |old(~a8~0)| 13))) (.cse4 (not (<= |old(~a16~0)| 4))) (.cse20 (and .cse6 .cse25))) (and (or .cse0 .cse1 .cse2 .cse3 .cse4 .cse5) (or .cse6 .cse7 .cse1 .cse8 .cse9 .cse10 .cse11 .cse12 .cse13 .cse5) (or .cse1 (and .cse14 .cse15 .cse16 .cse17 (= 1 ~a21~0) .cse18) .cse12 .cse5) (or .cse19 .cse20 .cse12 (and .cse21 (= 1 ~a20~0) .cse22)) (or .cse7 .cse1 .cse23 .cse8 (not (<= |old(~a20~0)| 0)) .cse10 .cse11 .cse12 .cse13 .cse5) (or .cse24 (and (or .cse10 .cse12) (or .cse2 .cse25)) .cse3 (not (<= 6 |old(~a16~0)|))) (or .cse6 (and .cse15 .cse0 .cse16 (<= ~a16~0 5) (< 4 ~a16~0) .cse18 .cse22) .cse9 .cse3 .cse8 .cse10) (or .cse19 (and .cse14 .cse21 .cse22) .cse23 .cse12) (or .cse24 .cse3 .cse4 .cse20)))) [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,103 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-21 01:20:32,104 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-21 01:20:32,105 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-21 01:20:32,106 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-21 01:20:32,107 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-21 01:20:32,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 01:20:32,108 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (= 1 ~a17~0) (= 1 ~a21~0) (= 1 ~a20~0) (= 15 ~a8~0) (= 5 ~a16~0) (= 8 ~a12~0)) [2020-07-21 01:20:32,108 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 01:20:32,108 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 01:20:32,108 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (= 15 |old(~a8~0)|)) (and (= ~a7~0 |old(~a7~0)|) (= ~a17~0 |old(~a17~0)|) (= 1 ~a21~0) (= ~a20~0 |old(~a20~0)|) (= 15 ~a8~0) (= 5 ~a16~0)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (< |old(~a16~0)| 6)) (not (= 1 |old(~a17~0)|)) (not (= 1 |old(~a21~0)|)) (not (= 8 ~a12~0))) [2020-07-21 01:20:32,108 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:20:32,108 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse2 (= 1 ~a21~0))) (let ((.cse6 (= 1 ~a20~0)) (.cse1 (not .cse2))) (let ((.cse3 (<= ~a8~0 13)) (.cse0 (= 1 ~a17~0)) (.cse5 (<= ~a16~0 5)) (.cse7 (= 1 ~a7~0)) (.cse4 (or .cse6 .cse1))) (or (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and (or (and (not .cse0) .cse1) (and .cse0 .cse2)) .cse3 (<= 6 ~a16~0)) (and .cse3 (<= ~a16~0 4) .cse4) (and (<= ~a7~0 0) .cse2) (not (= 1 |old(~a20~0)|)) (not (< |old(~a16~0)| 6)) (and .cse3 .cse0 .cse5 .cse6) (and .cse7 .cse5 .cse2) (not (= 1 |old(~a21~0)|)) (and .cse7 .cse2 .cse4) (not (= 8 ~a12~0)))))) [2020-07-21 01:20:32,108 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-21 01:20:32,108 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-21 01:20:32,108 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse2 (= 1 ~a21~0))) (let ((.cse6 (= 1 ~a20~0)) (.cse1 (not .cse2))) (let ((.cse3 (<= ~a8~0 13)) (.cse0 (= 1 ~a17~0)) (.cse5 (<= ~a16~0 5)) (.cse7 (= 1 ~a7~0)) (.cse4 (or .cse6 .cse1))) (or (not (= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (< 4 |old(~a16~0)|)) (not (= 1 |old(~a17~0)|)) (and (or (and (not .cse0) .cse1) (and .cse0 .cse2)) .cse3 (<= 6 ~a16~0)) (and .cse3 (<= ~a16~0 4) .cse4) (and (<= ~a7~0 0) .cse2) (not (= 1 |old(~a20~0)|)) (not (< |old(~a16~0)| 6)) (and .cse3 .cse0 .cse5 .cse6) (and .cse7 .cse5 .cse2) (not (= 1 |old(~a21~0)|)) (and .cse7 .cse2 .cse4) (not (= 8 ~a12~0)))))) [2020-07-21 01:20:32,109 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-21 01:20:32,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 01:20:32 BoogieIcfgContainer [2020-07-21 01:20:32,132 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 01:20:32,134 INFO L168 Benchmark]: Toolchain (without parser) took 39224.96 ms. Allocated memory was 137.9 MB in the beginning and 655.4 MB in the end (delta: 517.5 MB). Free memory was 99.2 MB in the beginning and 441.7 MB in the end (delta: -342.6 MB). Peak memory consumption was 512.5 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:32,135 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-21 01:20:32,135 INFO L168 Benchmark]: CACSL2BoogieTranslator took 750.04 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 98.8 MB in the beginning and 169.4 MB in the end (delta: -70.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:32,136 INFO L168 Benchmark]: Boogie Preprocessor took 113.78 ms. Allocated memory is still 203.9 MB. Free memory was 169.4 MB in the beginning and 164.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:32,137 INFO L168 Benchmark]: RCFGBuilder took 1473.92 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 164.5 MB in the beginning and 179.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:32,137 INFO L168 Benchmark]: TraceAbstraction took 36880.84 ms. Allocated memory was 236.5 MB in the beginning and 655.4 MB in the end (delta: 418.9 MB). Free memory was 179.0 MB in the beginning and 441.7 MB in the end (delta: -262.7 MB). Peak memory consumption was 493.7 MB. Max. memory is 7.1 GB. [2020-07-21 01:20:32,140 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.9 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 750.04 ms. Allocated memory was 137.9 MB in the beginning and 203.9 MB in the end (delta: 66.1 MB). Free memory was 98.8 MB in the beginning and 169.4 MB in the end (delta: -70.6 MB). Peak memory consumption was 34.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.78 ms. Allocated memory is still 203.9 MB. Free memory was 169.4 MB in the beginning and 164.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1473.92 ms. Allocated memory was 203.9 MB in the beginning and 236.5 MB in the end (delta: 32.5 MB). Free memory was 164.5 MB in the beginning and 179.0 MB in the end (delta: -14.5 MB). Peak memory consumption was 82.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 36880.84 ms. Allocated memory was 236.5 MB in the beginning and 655.4 MB in the end (delta: 418.9 MB). Free memory was 179.0 MB in the beginning and 441.7 MB in the end (delta: -262.7 MB). Peak memory consumption was 493.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 452]: 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: 583]: Loop Invariant Derived loop invariant: ((((((((((((!(15 == \old(a8)) || !(\old(a7) <= 0)) || !(4 < \old(a16))) || !(1 == \old(a17))) || ((((!(1 == a17) && !(1 == a21)) || (1 == a17 && 1 == a21)) && a8 <= 13) && 6 <= a16)) || ((a8 <= 13 && a16 <= 4) && (1 == a20 || !(1 == a21)))) || (a7 <= 0 && 1 == a21)) || !(1 == \old(a20))) || !(\old(a16) < 6)) || (((a8 <= 13 && 1 == a17) && a16 <= 5) && 1 == a20)) || ((1 == a7 && a16 <= 5) && 1 == a21)) || !(1 == \old(a21))) || ((1 == a7 && 1 == a21) && (1 == a20 || !(1 == a21)))) || !(8 == a12) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 31.4s, OverallIterations: 12, TraceHistogramMax: 7, AutomataDifference: 18.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 5.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 806 SDtfs, 6014 SDslu, 666 SDs, 0 SdLazy, 12787 SolverSat, 1509 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 11.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3911 GetRequests, 3762 SyntacticMatches, 10 SemanticMatches, 139 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 712 ImplicationChecksByTransitivity, 6.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=3471occurred 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: 0.7s AutomataMinimizationTime, 12 MinimizatonAttempts, 1980 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 192 PreInvPairs, 238 NumberOfFragments, 686 HoareAnnotationTreeSize, 192 FomulaSimplifications, 12723 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 7 FomulaSimplificationsInter, 24601 FormulaSimplificationTreeSizeReductionInter, 4.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.2s SatisfiabilityAnalysisTime, 7.2s InterpolantComputationTime, 2301 NumberOfCodeBlocks, 1704 NumberOfCodeBlocksAsserted, 34 NumberOfCheckSat, 3823 ConstructedInterpolants, 0 QuantifiedInterpolants, 3905995 SizeOfPredicates, 70 NumberOfNonLiveVariables, 5550 ConjunctsInSsa, 238 ConjunctsInUnsatCore, 20 InterpolantComputations, 5 PerfectInterpolantSequences, 3486/3575 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...