/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 NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:30:22,270 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:30:22,272 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:30:22,285 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:30:22,285 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:30:22,286 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:30:22,288 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:30:22,290 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:30:22,292 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:30:22,293 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:30:22,294 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:30:22,295 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:30:22,295 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:30:22,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:30:22,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:30:22,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:30:22,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:30:22,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:30:22,302 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:30:22,304 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:30:22,306 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:30:22,307 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:30:22,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:30:22,309 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:30:22,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 11:30:22,320 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:30:22,321 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:30:22,322 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:30:22,323 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 11:30:22,338 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:30:22,338 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:30:22,339 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:30:22,340 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:30:22,340 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:30:22,340 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:30:22,340 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:30:22,340 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:30:22,341 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:30:22,341 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:30:22,341 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:30:22,341 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:30:22,341 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:30:22,342 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:30:22,342 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:30:22,342 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:30:22,345 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:30:22,345 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:30:22,345 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:30:22,346 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:30:22,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:30:22,346 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:30:22,346 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:30:22,346 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:30:22,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:30:22,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:30:22,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:22,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:30:22,349 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:30:22,349 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 -> NOT_INCREMENTALLY [2020-07-21 11:30:22,620 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:30:22,634 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:30:22,637 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:30:22,639 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:30:22,639 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:30:22,640 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-21 11:30:22,709 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2637abc76/506e58039f664355a48ac257e9a2bcb6/FLAG90e977fac [2020-07-21 11:30:23,270 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:30:23,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-21 11:30:23,286 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2637abc76/506e58039f664355a48ac257e9a2bcb6/FLAG90e977fac [2020-07-21 11:30:23,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2637abc76/506e58039f664355a48ac257e9a2bcb6 [2020-07-21 11:30:23,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:30:23,575 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:30:23,576 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:30:23,576 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:30:23,580 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:30:23,581 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:30:23" (1/1) ... [2020-07-21 11:30:23,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22ef5c86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:23, skipping insertion in model container [2020-07-21 11:30:23,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:30:23" (1/1) ... [2020-07-21 11:30:23,592 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:30:23,656 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:30:24,222 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:30:24,226 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:30:24,326 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:30:24,342 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:30:24,343 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24 WrapperNode [2020-07-21 11:30:24,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:30:24,344 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:30:24,344 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:30:24,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:30:24,359 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (1/1) ... [2020-07-21 11:30:24,360 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (1/1) ... [2020-07-21 11:30:24,379 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (1/1) ... [2020-07-21 11:30:24,380 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (1/1) ... [2020-07-21 11:30:24,437 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (1/1) ... [2020-07-21 11:30:24,457 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (1/1) ... [2020-07-21 11:30:24,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (1/1) ... [2020-07-21 11:30:24,479 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:30:24,480 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:30:24,480 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:30:24,480 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:30:24,481 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (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 11:30:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:30:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:30:24,559 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-21 11:30:24,560 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-21 11:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:30:24,560 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-21 11:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:30:24,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:30:26,009 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:30:26,010 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-21 11:30:26,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:30:26 BoogieIcfgContainer [2020-07-21 11:30:26,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:30:26,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:30:26,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:30:26,023 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:30:26,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:30:23" (1/3) ... [2020-07-21 11:30:26,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bc09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:30:26, skipping insertion in model container [2020-07-21 11:30:26,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:30:24" (2/3) ... [2020-07-21 11:30:26,025 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@189bc09e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:30:26, skipping insertion in model container [2020-07-21 11:30:26,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:30:26" (3/3) ... [2020-07-21 11:30:26,027 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-07-21 11:30:26,041 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:30:26,050 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 11:30:26,069 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 11:30:26,101 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:30:26,101 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:30:26,101 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:30:26,101 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:30:26,102 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:30:26,102 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:30:26,102 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:30:26,102 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:30:26,137 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-21 11:30:26,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-21 11:30:26,155 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:26,157 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] [2020-07-21 11:30:26,157 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:26,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:26,168 INFO L82 PathProgramCache]: Analyzing trace with hash -576444522, now seen corresponding path program 1 times [2020-07-21 11:30:26,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:26,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1372965068] [2020-07-21 11:30:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:26,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:26,282 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:30:26,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:26,368 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 11:30:26,369 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:30:26,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1372965068] [2020-07-21 11:30:26,371 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:30:26,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:30:26,372 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135831097] [2020-07-21 11:30:26,378 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:30:26,378 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:26,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:30:26,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:30:26,396 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-21 11:30:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:27,490 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-21 11:30:27,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:30:27,494 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-21 11:30:27,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:27,524 INFO L225 Difference]: With dead ends: 571 [2020-07-21 11:30:27,524 INFO L226 Difference]: Without dead ends: 294 [2020-07-21 11:30:27,539 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 53 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 11:30:27,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-21 11:30:27,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-21 11:30:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-21 11:30:27,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-21 11:30:27,666 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 55 [2020-07-21 11:30:27,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:27,668 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-21 11:30:27,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:30:27,669 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-21 11:30:27,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-21 11:30:27,693 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:27,694 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:30:27,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:27,895 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:27,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:27,895 INFO L82 PathProgramCache]: Analyzing trace with hash -913027315, now seen corresponding path program 1 times [2020-07-21 11:30:27,896 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:27,896 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [948008868] [2020-07-21 11:30:27,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:27,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:27,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:30:27,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:28,033 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:28,033 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:30:28,034 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [948008868] [2020-07-21 11:30:28,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:30:28,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:30:28,035 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52153911] [2020-07-21 11:30:28,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:30:28,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:28,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:30:28,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:30:28,037 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2020-07-21 11:30:29,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:29,023 INFO L93 Difference]: Finished difference Result 741 states and 1138 transitions. [2020-07-21 11:30:29,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:30:29,029 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-07-21 11:30:29,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:29,034 INFO L225 Difference]: With dead ends: 741 [2020-07-21 11:30:29,034 INFO L226 Difference]: Without dead ends: 453 [2020-07-21 11:30:29,036 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:30:29,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-07-21 11:30:29,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2020-07-21 11:30:29,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-07-21 11:30:29,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 624 transitions. [2020-07-21 11:30:29,078 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 624 transitions. Word has length 128 [2020-07-21 11:30:29,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:29,080 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 624 transitions. [2020-07-21 11:30:29,080 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:30:29,080 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 624 transitions. [2020-07-21 11:30:29,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-21 11:30:29,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:29,091 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:30:29,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:29,305 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:29,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:29,306 INFO L82 PathProgramCache]: Analyzing trace with hash 952189433, now seen corresponding path program 1 times [2020-07-21 11:30:29,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:29,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319645039] [2020-07-21 11:30:29,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:29,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:29,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:30:29,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:29,435 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:29,435 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:30:29,436 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319645039] [2020-07-21 11:30:29,436 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:30:29,436 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:30:29,437 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492257985] [2020-07-21 11:30:29,437 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:30:29,437 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:29,438 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:30:29,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:30:29,438 INFO L87 Difference]: Start difference. First operand 443 states and 624 transitions. Second operand 3 states. [2020-07-21 11:30:30,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:30,184 INFO L93 Difference]: Finished difference Result 1313 states and 1889 transitions. [2020-07-21 11:30:30,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:30:30,186 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-21 11:30:30,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:30,195 INFO L225 Difference]: With dead ends: 1313 [2020-07-21 11:30:30,195 INFO L226 Difference]: Without dead ends: 876 [2020-07-21 11:30:30,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 133 GetRequests, 132 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 11:30:30,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-07-21 11:30:30,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 731. [2020-07-21 11:30:30,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-07-21 11:30:30,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1040 transitions. [2020-07-21 11:30:30,257 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1040 transitions. Word has length 134 [2020-07-21 11:30:30,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:30,258 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1040 transitions. [2020-07-21 11:30:30,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:30:30,258 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1040 transitions. [2020-07-21 11:30:30,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-21 11:30:30,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:30,268 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:30:30,481 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:30,482 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:30,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:30,483 INFO L82 PathProgramCache]: Analyzing trace with hash -296475546, now seen corresponding path program 1 times [2020-07-21 11:30:30,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:30,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020781480] [2020-07-21 11:30:30,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:30,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:30,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:30:30,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:30,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:30:30,648 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020781480] [2020-07-21 11:30:30,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:30:30,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:30:30,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898143667] [2020-07-21 11:30:30,649 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:30:30,649 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:30,650 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:30:30,650 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:30:30,650 INFO L87 Difference]: Start difference. First operand 731 states and 1040 transitions. Second operand 5 states. [2020-07-21 11:30:31,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:31,730 INFO L93 Difference]: Finished difference Result 1476 states and 2124 transitions. [2020-07-21 11:30:31,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:30:31,732 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-07-21 11:30:31,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:31,740 INFO L225 Difference]: With dead ends: 1476 [2020-07-21 11:30:31,740 INFO L226 Difference]: Without dead ends: 751 [2020-07-21 11:30:31,742 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:30:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-07-21 11:30:31,763 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 739. [2020-07-21 11:30:31,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-07-21 11:30:31,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 906 transitions. [2020-07-21 11:30:31,768 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 906 transitions. Word has length 167 [2020-07-21 11:30:31,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:31,768 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 906 transitions. [2020-07-21 11:30:31,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:30:31,769 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 906 transitions. [2020-07-21 11:30:31,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-21 11:30:31,771 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:31,772 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-21 11:30:31,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:31,985 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:31,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:31,986 INFO L82 PathProgramCache]: Analyzing trace with hash 528848677, now seen corresponding path program 1 times [2020-07-21 11:30:31,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:31,987 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499789710] [2020-07-21 11:30:31,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:32,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:32,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-21 11:30:32,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:32,197 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:32,198 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:30:32,198 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499789710] [2020-07-21 11:30:32,198 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:30:32,198 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:30:32,199 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69397726] [2020-07-21 11:30:32,199 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:30:32,200 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:32,200 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:30:32,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:30:32,200 INFO L87 Difference]: Start difference. First operand 739 states and 906 transitions. Second operand 5 states. [2020-07-21 11:30:33,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:33,082 INFO L93 Difference]: Finished difference Result 1641 states and 1996 transitions. [2020-07-21 11:30:33,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:30:33,085 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-07-21 11:30:33,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:33,090 INFO L225 Difference]: With dead ends: 1641 [2020-07-21 11:30:33,090 INFO L226 Difference]: Without dead ends: 908 [2020-07-21 11:30:33,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:30:33,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-07-21 11:30:33,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 892. [2020-07-21 11:30:33,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-07-21 11:30:33,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1069 transitions. [2020-07-21 11:30:33,121 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1069 transitions. Word has length 172 [2020-07-21 11:30:33,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:33,122 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1069 transitions. [2020-07-21 11:30:33,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:30:33,122 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1069 transitions. [2020-07-21 11:30:33,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-21 11:30:33,126 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:33,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:33,340 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:33,341 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:33,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:33,342 INFO L82 PathProgramCache]: Analyzing trace with hash -1123243390, now seen corresponding path program 1 times [2020-07-21 11:30:33,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:33,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742989924] [2020-07-21 11:30:33,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:33,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:30:33,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:33,460 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:30:33,690 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-21 11:30:33,691 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:30:33,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742989924] [2020-07-21 11:30:33,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:30:33,692 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:30:33,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1909162151] [2020-07-21 11:30:33,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:30:33,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:33,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:30:33,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:30:33,694 INFO L87 Difference]: Start difference. First operand 892 states and 1069 transitions. Second operand 3 states. [2020-07-21 11:30:34,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:34,665 INFO L93 Difference]: Finished difference Result 2219 states and 2749 transitions. [2020-07-21 11:30:34,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:30:34,666 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-21 11:30:34,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:34,673 INFO L225 Difference]: With dead ends: 2219 [2020-07-21 11:30:34,674 INFO L226 Difference]: Without dead ends: 1476 [2020-07-21 11:30:34,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 236 GetRequests, 235 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 11:30:34,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-07-21 11:30:34,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1333. [2020-07-21 11:30:34,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-07-21 11:30:34,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1605 transitions. [2020-07-21 11:30:34,754 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1605 transitions. Word has length 237 [2020-07-21 11:30:34,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:34,755 INFO L479 AbstractCegarLoop]: Abstraction has 1333 states and 1605 transitions. [2020-07-21 11:30:34,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:30:34,755 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1605 transitions. [2020-07-21 11:30:34,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-21 11:30:34,760 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:34,761 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:34,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:34,975 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:34,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:34,976 INFO L82 PathProgramCache]: Analyzing trace with hash -1661435255, now seen corresponding path program 1 times [2020-07-21 11:30:34,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:34,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904329339] [2020-07-21 11:30:34,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:35,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:35,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:30:35,081 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:35,108 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 11:30:35,108 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:30:35,163 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:35,163 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:30:35,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:35,240 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:35,241 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-21 11:30:35,242 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:35,429 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:35,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904329339] [2020-07-21 11:30:35,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:30:35,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 11:30:35,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1533818464] [2020-07-21 11:30:35,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:30:35,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:35,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:30:35,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:30:35,432 INFO L87 Difference]: Start difference. First operand 1333 states and 1605 transitions. Second operand 6 states. [2020-07-21 11:30:36,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:36,557 INFO L93 Difference]: Finished difference Result 2843 states and 3572 transitions. [2020-07-21 11:30:36,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:30:36,558 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-07-21 11:30:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:36,568 INFO L225 Difference]: With dead ends: 2843 [2020-07-21 11:30:36,568 INFO L226 Difference]: Without dead ends: 1659 [2020-07-21 11:30:36,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 489 GetRequests, 480 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:30:36,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-07-21 11:30:36,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1633. [2020-07-21 11:30:36,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2020-07-21 11:30:36,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 1973 transitions. [2020-07-21 11:30:36,621 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 1973 transitions. Word has length 242 [2020-07-21 11:30:36,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:36,622 INFO L479 AbstractCegarLoop]: Abstraction has 1633 states and 1973 transitions. [2020-07-21 11:30:36,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:30:36,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 1973 transitions. [2020-07-21 11:30:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-21 11:30:36,628 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:36,628 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:30:36,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:36,843 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:36,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:36,844 INFO L82 PathProgramCache]: Analyzing trace with hash -14922590, now seen corresponding path program 1 times [2020-07-21 11:30:36,844 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:36,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1206560815] [2020-07-21 11:30:36,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:36,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:30:36,943 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:37,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:30:37,201 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:37,202 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1206560815] [2020-07-21 11:30:37,202 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:30:37,203 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-21 11:30:37,203 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331579326] [2020-07-21 11:30:37,204 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:30:37,204 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:37,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:30:37,205 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:30:37,205 INFO L87 Difference]: Start difference. First operand 1633 states and 1973 transitions. Second operand 6 states. [2020-07-21 11:30:38,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:30:38,450 INFO L93 Difference]: Finished difference Result 3874 states and 4792 transitions. [2020-07-21 11:30:38,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:30:38,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2020-07-21 11:30:38,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:30:38,464 INFO L225 Difference]: With dead ends: 3874 [2020-07-21 11:30:38,464 INFO L226 Difference]: Without dead ends: 1655 [2020-07-21 11:30:38,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 507 GetRequests, 498 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:30:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-07-21 11:30:38,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1629. [2020-07-21 11:30:38,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-07-21 11:30:38,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1905 transitions. [2020-07-21 11:30:38,513 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1905 transitions. Word has length 251 [2020-07-21 11:30:38,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:30:38,513 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 1905 transitions. [2020-07-21 11:30:38,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:30:38,514 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1905 transitions. [2020-07-21 11:30:38,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-07-21 11:30:38,520 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:30:38,521 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:30:38,733 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:30:38,734 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:30:38,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:30:38,735 INFO L82 PathProgramCache]: Analyzing trace with hash 253048858, now seen corresponding path program 1 times [2020-07-21 11:30:38,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:30:38,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1670628686] [2020-07-21 11:30:38,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:30:38,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:30:38,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:30:38,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:30:38,877 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:30:38,878 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:30:38,879 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 11:30:38,880 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 11:30:38,882 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:30:38,885 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 11:30:38,887 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 11:30:38,888 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:30:56,399 WARN L193 SmtUtils]: Spent 17.48 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-07-21 11:30:56,437 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-21 11:30:56,552 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-21 11:30:56,553 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:30:56,554 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:30:56,582 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:30:56,703 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:30:56,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:30:56,810 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:30:56,811 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:56,812 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:56,813 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:30:56,842 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:56,843 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:30:56,973 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:56,975 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:30:56,976 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:30:56,977 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:30:56,978 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:30:56,979 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:30:56,979 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:30:56,981 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:30:56,982 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:30:57,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1670628686] [2020-07-21 11:30:57,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-21 11:30:57,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-21 11:30:57,115 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032041279] [2020-07-21 11:30:57,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:30:57,116 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:30:57,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:30:57,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-21 11:30:57,116 INFO L87 Difference]: Start difference. First operand 1629 states and 1905 transitions. Second operand 8 states. [2020-07-21 11:31:00,309 WARN L193 SmtUtils]: Spent 2.47 s on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-07-21 11:31:01,674 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-07-21 11:31:30,957 WARN L193 SmtUtils]: Spent 27.75 s on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-07-21 11:31:31,430 WARN L193 SmtUtils]: Spent 249.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-07-21 11:31:31,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:31:31,721 INFO L93 Difference]: Finished difference Result 4307 states and 5182 transitions. [2020-07-21 11:31:31,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 11:31:31,722 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-07-21 11:31:31,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:31:31,736 INFO L225 Difference]: With dead ends: 4307 [2020-07-21 11:31:31,736 INFO L226 Difference]: Without dead ends: 2827 [2020-07-21 11:31:31,741 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 48.7s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-07-21 11:31:31,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-07-21 11:31:31,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2660. [2020-07-21 11:31:31,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2660 states. [2020-07-21 11:31:31,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3206 transitions. [2020-07-21 11:31:31,824 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3206 transitions. Word has length 287 [2020-07-21 11:31:31,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:31:31,825 INFO L479 AbstractCegarLoop]: Abstraction has 2660 states and 3206 transitions. [2020-07-21 11:31:31,825 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:31:31,825 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3206 transitions. [2020-07-21 11:31:31,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-21 11:31:31,865 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:31:31,866 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 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 11:31:32,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:31:32,067 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:31:32,067 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:31:32,068 INFO L82 PathProgramCache]: Analyzing trace with hash 273888777, now seen corresponding path program 1 times [2020-07-21 11:31:32,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:31:32,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [230076009] [2020-07-21 11:31:32,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:31:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:31:32,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:31:32,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:31:32,237 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:31:32,239 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 11:31:32,239 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,241 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,244 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,245 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,248 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,250 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-21 11:31:32,252 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,253 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,254 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,254 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,256 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,257 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,257 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,259 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,268 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,268 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,274 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,276 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,277 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,278 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-21 11:31:32,280 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,281 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-21 11:31:32,285 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,286 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,287 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,289 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:31:32,290 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,291 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,291 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,292 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,293 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,295 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,296 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,298 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,299 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,300 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,301 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,302 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,303 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,304 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,304 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,306 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,306 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,310 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-21 11:31:32,310 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,313 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,314 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,315 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,316 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,318 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,321 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,322 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,323 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,325 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-21 11:31:32,327 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,328 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,329 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,330 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,333 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,333 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,335 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,337 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,338 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,338 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,339 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,344 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,346 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,347 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,348 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,349 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,350 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,352 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:31:32,353 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-21 11:31:32,353 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,354 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,362 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-21 11:31:32,363 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-21 11:32:05,430 WARN L193 SmtUtils]: Spent 26.26 s on a formula simplification. DAG size of input: 242 DAG size of output: 60 [2020-07-21 11:32:06,317 INFO L501 QuantifierPusher]: Distributing 6 conjuncts over 2 disjuncts [2020-07-21 11:32:13,096 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 6 proven. 94 refuted. 2 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-21 11:32:13,096 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:32:13,273 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,274 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,274 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,275 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,276 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,277 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,278 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,279 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,280 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,281 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,282 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,283 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,284 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,285 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:32:13,286 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,287 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,288 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,289 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,290 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,290 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,292 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,292 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,293 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,294 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,294 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,296 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,297 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,298 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,298 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,300 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,300 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,301 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 9 conjuncts [2020-07-21 11:32:13,302 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,303 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,304 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,305 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,306 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-21 11:32:13,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,307 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,308 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,308 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,309 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,310 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,311 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,311 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,312 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,312 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,313 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,314 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,315 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,316 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,316 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,317 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,318 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-21 11:32:13,319 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:32:13,320 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:32:13,320 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,321 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,321 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,322 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,323 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,324 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,324 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,325 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,326 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,327 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,328 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,329 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,330 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,331 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,332 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-21 11:32:13,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,333 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,334 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,334 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,336 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,336 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,337 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,338 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,338 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,339 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-21 11:32:13,340 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,341 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,342 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,342 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,343 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-21 11:32:13,344 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-21 11:32:13,638 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,639 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,639 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,640 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,641 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,641 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,642 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:32:13,834 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-07-21 11:32:13,834 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [230076009] [2020-07-21 11:32:13,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-21 11:32:13,835 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2020-07-21 11:32:13,835 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573740362] [2020-07-21 11:32:13,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:32:13,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:32:13,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:32:13,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=43, Unknown=6, NotChecked=0, Total=72 [2020-07-21 11:32:13,837 INFO L87 Difference]: Start difference. First operand 2660 states and 3206 transitions. Second operand 3 states. [2020-07-21 11:32:15,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:32:15,756 INFO L93 Difference]: Finished difference Result 5314 states and 6404 transitions. [2020-07-21 11:32:15,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:32:15,758 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2020-07-21 11:32:15,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:32:15,771 INFO L225 Difference]: With dead ends: 5314 [2020-07-21 11:32:15,771 INFO L226 Difference]: Without dead ends: 2658 [2020-07-21 11:32:15,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 601 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 40.5s TimeCoverageRelationStatistics Valid=23, Invalid=43, Unknown=6, NotChecked=0, Total=72 [2020-07-21 11:32:15,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2020-07-21 11:32:15,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2658. [2020-07-21 11:32:15,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-07-21 11:32:15,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3165 transitions. [2020-07-21 11:32:15,840 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3165 transitions. Word has length 306 [2020-07-21 11:32:15,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:32:15,841 INFO L479 AbstractCegarLoop]: Abstraction has 2658 states and 3165 transitions. [2020-07-21 11:32:15,841 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:32:15,841 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3165 transitions. [2020-07-21 11:32:15,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-07-21 11:32:15,853 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:32:15,853 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 11:32:16,066 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:32:16,067 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:32:16,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:32:16,068 INFO L82 PathProgramCache]: Analyzing trace with hash 466916981, now seen corresponding path program 1 times [2020-07-21 11:32:16,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:32:16,069 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287351126] [2020-07-21 11:32:16,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 11:32:16,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:32:16,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:32:16,205 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:32:16,292 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-07-21 11:32:16,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:32:16,293 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287351126] [2020-07-21 11:32:16,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:32:16,294 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-21 11:32:16,294 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [72058226] [2020-07-21 11:32:16,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-21 11:32:16,295 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:32:16,295 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-21 11:32:16,295 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-21 11:32:16,295 INFO L87 Difference]: Start difference. First operand 2658 states and 3165 transitions. Second operand 3 states. [2020-07-21 11:32:17,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:32:17,818 INFO L93 Difference]: Finished difference Result 2658 states and 3165 transitions. [2020-07-21 11:32:17,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-21 11:32:17,822 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 420 [2020-07-21 11:32:17,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:32:17,823 INFO L225 Difference]: With dead ends: 2658 [2020-07-21 11:32:17,823 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:32:17,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 419 GetRequests, 418 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 11:32:17,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:32:17,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:32:17,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:32:17,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:32:17,831 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 420 [2020-07-21 11:32:17,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:32:17,831 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:32:17,831 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-21 11:32:17,831 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:32:17,832 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:32:18,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:32:18,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:32:18,808 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-07-21 11:32:19,847 WARN L193 SmtUtils]: Spent 1.02 s on a formula simplification. DAG size of input: 142 DAG size of output: 30 [2020-07-21 11:32:20,740 WARN L193 SmtUtils]: Spent 846.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 25 [2020-07-21 11:32:21,604 WARN L193 SmtUtils]: Spent 861.00 ms on a formula simplification. DAG size of input: 137 DAG size of output: 25 [2020-07-21 11:32:21,609 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:32:21,609 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|)) [2020-07-21 11:32:21,610 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:32:21,610 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-21 11:32:21,610 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,610 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,610 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,610 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-21 11:32:21,611 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,612 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-21 11:32:21,613 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 151) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,614 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-21 11:32:21,615 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,616 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-21 11:32:21,617 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,618 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-21 11:32:21,619 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,620 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-21 11:32:21,621 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,622 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 11:32:21,623 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-21 11:32:21,624 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-21 11:32:21,625 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-21 11:32:21,626 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-21 11:32:21,626 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-21 11:32:21,626 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-21 11:32:21,626 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-21 11:32:21,626 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 20 574) the Hoare annotation is: (let ((.cse1 (<= ~a10~0 |old(~a10~0)|)) (.cse2 (<= |old(~a10~0)| ~a10~0)) (.cse3 (<= ~a19~0 |old(~a19~0)|)) (.cse4 (= ~a1~0 |old(~a1~0)|))) (let ((.cse0 (and .cse1 .cse2 .cse3 .cse4))) (and (or (not (<= |old(~a19~0)| 6)) .cse0) (or (not (<= 9 |old(~a19~0)|)) (and (<= 9 ~a19~0) .cse1 .cse2 .cse3 .cse4)) (or (not (< 38 |old(~a1~0)|)) .cse0) (or .cse0 (not (<= 1 |old(~a10~0)|)))))) [2020-07-21 11:32:21,626 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-21 11:32:21,626 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-21 11:32:21,627 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-21 11:32:21,628 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-21 11:32:21,629 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,630 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:32:21,631 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a10~0 0) (<= ~a19~0 9) (<= 9 ~a19~0) (= 23 ~a1~0)) [2020-07-21 11:32:21,632 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:32:21,632 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:32:21,632 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 576 592) the Hoare annotation is: (or (not (= 23 |old(~a1~0)|)) (not (<= |old(~a10~0)| 0)) (not (<= 9 |old(~a19~0)|)) (not (<= |old(~a19~0)| 9)) (and (<= 9 ~a19~0) (<= ~a10~0 |old(~a10~0)|) (<= |old(~a10~0)| ~a10~0) (<= ~a19~0 |old(~a19~0)|) (= ~a1~0 |old(~a1~0)|))) [2020-07-21 11:32:21,632 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-21 11:32:21,632 INFO L264 CegarLoopResult]: At program point L590(line 590) the Hoare annotation is: (or (<= 9 ~a19~0) (< 38 ~a1~0) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (<= 1 ~a10~0) (not (<= |old(~a19~0)| 9))) [2020-07-21 11:32:21,632 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-21 11:32:21,632 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-21 11:32:21,632 INFO L264 CegarLoopResult]: At program point L582-2(lines 582 591) the Hoare annotation is: (or (<= 9 ~a19~0) (< 38 ~a1~0) (<= ~a19~0 6) (not (<= |old(~a10~0)| 0)) (not (= 23 |old(~a1~0)|)) (not (<= 9 |old(~a19~0)|)) (<= 1 ~a10~0) (not (<= |old(~a19~0)| 9))) [2020-07-21 11:32:21,632 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-21 11:32:21,653 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:32:21 BoogieIcfgContainer [2020-07-21 11:32:21,653 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:32:21,655 INFO L168 Benchmark]: Toolchain (without parser) took 118081.54 ms. Allocated memory was 138.4 MB in the beginning and 537.4 MB in the end (delta: 399.0 MB). Free memory was 101.9 MB in the beginning and 191.0 MB in the end (delta: -89.1 MB). Peak memory consumption was 309.9 MB. Max. memory is 7.1 GB. [2020-07-21 11:32:21,657 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-21 11:32:21,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 767.44 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 101.7 MB in the beginning and 170.5 MB in the end (delta: -68.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:32:21,658 INFO L168 Benchmark]: Boogie Preprocessor took 135.74 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. [2020-07-21 11:32:21,659 INFO L168 Benchmark]: RCFGBuilder took 1537.17 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 165.4 MB in the beginning and 181.2 MB in the end (delta: -15.8 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. [2020-07-21 11:32:21,660 INFO L168 Benchmark]: TraceAbstraction took 115634.79 ms. Allocated memory was 237.5 MB in the beginning and 537.4 MB in the end (delta: 299.9 MB). Free memory was 179.7 MB in the beginning and 191.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 288.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:32:21,672 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.4 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 767.44 ms. Allocated memory was 138.4 MB in the beginning and 204.5 MB in the end (delta: 66.1 MB). Free memory was 101.7 MB in the beginning and 170.5 MB in the end (delta: -68.8 MB). Peak memory consumption was 34.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.74 ms. Allocated memory is still 204.5 MB. Free memory was 170.5 MB in the beginning and 165.4 MB in the end (delta: 5.1 MB). Peak memory consumption was 5.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1537.17 ms. Allocated memory was 204.5 MB in the beginning and 237.5 MB in the end (delta: 33.0 MB). Free memory was 165.4 MB in the beginning and 181.2 MB in the end (delta: -15.8 MB). Peak memory consumption was 82.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 115634.79 ms. Allocated memory was 237.5 MB in the beginning and 537.4 MB in the end (delta: 299.9 MB). Free memory was 179.7 MB in the beginning and 191.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 288.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 151]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 582]: Loop Invariant Derived loop invariant: ((((((9 <= a19 || 38 < a1) || a19 <= 6) || !(\old(a10) <= 0)) || !(23 == \old(a1))) || !(9 <= \old(a19))) || 1 <= a10) || !(\old(a19) <= 9) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 215 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 111.9s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 46.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 3.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1052 SDtfs, 2328 SDslu, 300 SDs, 0 SdLazy, 7081 SolverSat, 1233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3387 GetRequests, 3315 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 89.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2660occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 11 MinimizatonAttempts, 545 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 96 PreInvPairs, 144 NumberOfFragments, 194 HoareAnnotationTreeSize, 96 FomulaSimplifications, 4910 FormulaSimplificationTreeSizeReduction, 0.5s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6768 FormulaSimplificationTreeSizeReductionInter, 2.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 61.3s InterpolantComputationTime, 2399 NumberOfCodeBlocks, 2399 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3184 ConstructedInterpolants, 108 QuantifiedInterpolants, 3278156 SizeOfPredicates, 17 NumberOfNonLiveVariables, 4137 ConjunctsInSsa, 73 ConjunctsInUnsatCore, 14 InterpolantComputations, 8 PerfectInterpolantSequences, 2045/2151 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...