/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 [2020-07-20 11:38:39,486 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 11:38:39,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 11:38:39,501 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 11:38:39,501 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:38:39,502 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:38:39,504 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:38:39,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:38:39,508 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:38:39,509 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:38:39,510 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:38:39,511 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:38:39,511 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:38:39,512 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:38:39,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:38:39,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:38:39,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:38:39,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:38:39,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:38:39,520 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:38:39,522 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:38:39,523 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:38:39,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:38:39,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:38:39,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:38:39,536 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:38:39,536 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:38:39,537 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:38:39,538 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 11:38:39,554 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:38:39,557 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:38:39,558 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:38:39,559 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:38:39,559 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:38:39,559 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:38:39,559 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:38:39,560 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:38:39,560 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:38:39,560 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:38:39,560 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:38:39,560 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:38:39,561 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:38:39,561 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:38:39,561 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:38:39,561 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:38:39,561 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:38:39,562 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:38:39,562 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:38:39,562 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:38:39,562 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:38:39,563 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:38:39,563 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:38:39,563 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:38:39,563 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:38:39,563 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:38:39,564 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:39,564 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:38:39,564 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:38:39,564 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 [2020-07-20 11:38:39,869 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:38:39,881 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:38:39,884 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:38:39,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:38:39,885 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:38:39,886 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-20 11:38:39,955 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08e94476/31177725e6b74874a673300232739ca6/FLAG36a72bdcb [2020-07-20 11:38:40,533 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:38:40,534 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem10_label40.c [2020-07-20 11:38:40,555 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08e94476/31177725e6b74874a673300232739ca6/FLAG36a72bdcb [2020-07-20 11:38:40,800 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d08e94476/31177725e6b74874a673300232739ca6 [2020-07-20 11:38:40,811 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:38:40,814 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:38:40,815 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:38:40,815 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:38:40,819 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:38:40,820 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:38:40" (1/1) ... [2020-07-20 11:38:40,822 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d640b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:40, skipping insertion in model container [2020-07-20 11:38:40,823 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:38:40" (1/1) ... [2020-07-20 11:38:40,831 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:38:40,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:38:41,267 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:38:41,272 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:38:41,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:38:41,498 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:38:41,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41 WrapperNode [2020-07-20 11:38:41,498 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:38:41,499 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:38:41,499 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:38:41,499 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:38:41,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... [2020-07-20 11:38:41,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... [2020-07-20 11:38:41,531 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... [2020-07-20 11:38:41,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... [2020-07-20 11:38:41,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... [2020-07-20 11:38:41,585 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... [2020-07-20 11:38:41,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... [2020-07-20 11:38:41,609 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:38:41,610 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:38:41,610 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:38:41,613 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:38:41,614 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:38:41,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:38:41,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:38:41,703 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 11:38:41,704 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:38:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 11:38:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:38:41,704 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:38:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:38:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:38:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:38:41,705 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:38:43,047 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:38:43,048 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:38:43,059 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:38:43 BoogieIcfgContainer [2020-07-20 11:38:43,059 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:38:43,063 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:38:43,063 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:38:43,067 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:38:43,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:38:40" (1/3) ... [2020-07-20 11:38:43,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0e1e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:38:43, skipping insertion in model container [2020-07-20 11:38:43,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:38:41" (2/3) ... [2020-07-20 11:38:43,069 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0e1e02 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:38:43, skipping insertion in model container [2020-07-20 11:38:43,069 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:38:43" (3/3) ... [2020-07-20 11:38:43,073 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label40.c [2020-07-20 11:38:43,083 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:38:43,093 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:38:43,107 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:38:43,132 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:38:43,133 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:38:43,133 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:38:43,133 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:38:43,134 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:38:43,134 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:38:43,134 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:38:43,134 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:38:43,157 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states. [2020-07-20 11:38:43,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-20 11:38:43,167 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:43,168 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] [2020-07-20 11:38:43,168 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:43,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:43,175 INFO L82 PathProgramCache]: Analyzing trace with hash -576444522, now seen corresponding path program 1 times [2020-07-20 11:38:43,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:43,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1085927464] [2020-07-20 11:38:43,185 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 [2020-07-20 11:38:43,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:43,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:38:43,291 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:43,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:43,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:38:43,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1085927464] [2020-07-20 11:38:43,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:38:43,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:38:43,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423865768] [2020-07-20 11:38:43,417 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:38:43,417 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:38:43,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:38:43,434 INFO L87 Difference]: Start difference. First operand 215 states. Second operand 3 states. [2020-07-20 11:38:44,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:44,471 INFO L93 Difference]: Finished difference Result 571 states and 989 transitions. [2020-07-20 11:38:44,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:38:44,473 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 55 [2020-07-20 11:38:44,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:44,490 INFO L225 Difference]: With dead ends: 571 [2020-07-20 11:38:44,490 INFO L226 Difference]: Without dead ends: 294 [2020-07-20 11:38:44,497 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 [2020-07-20 11:38:44,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 294 states. [2020-07-20 11:38:44,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 294 to 294. [2020-07-20 11:38:44,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 294 states. [2020-07-20 11:38:44,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 294 states to 294 states and 446 transitions. [2020-07-20 11:38:44,571 INFO L78 Accepts]: Start accepts. Automaton has 294 states and 446 transitions. Word has length 55 [2020-07-20 11:38:44,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:44,572 INFO L479 AbstractCegarLoop]: Abstraction has 294 states and 446 transitions. [2020-07-20 11:38:44,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:38:44,573 INFO L276 IsEmpty]: Start isEmpty. Operand 294 states and 446 transitions. [2020-07-20 11:38:44,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-07-20 11:38:44,579 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:44,582 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] [2020-07-20 11:38:44,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:44,799 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:44,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:44,799 INFO L82 PathProgramCache]: Analyzing trace with hash -913027315, now seen corresponding path program 1 times [2020-07-20 11:38:44,800 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:44,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835010879] [2020-07-20 11:38:44,801 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 [2020-07-20 11:38:44,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:44,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:38:44,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:44,938 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:44,938 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:38:44,938 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835010879] [2020-07-20 11:38:44,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:38:44,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:38:44,939 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042888549] [2020-07-20 11:38:44,941 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:38:44,941 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:44,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:38:44,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:38:44,942 INFO L87 Difference]: Start difference. First operand 294 states and 446 transitions. Second operand 5 states. [2020-07-20 11:38:45,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:45,960 INFO L93 Difference]: Finished difference Result 741 states and 1138 transitions. [2020-07-20 11:38:45,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:38:45,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-07-20 11:38:45,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:45,975 INFO L225 Difference]: With dead ends: 741 [2020-07-20 11:38:45,976 INFO L226 Difference]: Without dead ends: 453 [2020-07-20 11:38:45,978 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 [2020-07-20 11:38:45,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 453 states. [2020-07-20 11:38:46,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 453 to 443. [2020-07-20 11:38:46,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 443 states. [2020-07-20 11:38:46,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 624 transitions. [2020-07-20 11:38:46,035 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 624 transitions. Word has length 128 [2020-07-20 11:38:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:46,036 INFO L479 AbstractCegarLoop]: Abstraction has 443 states and 624 transitions. [2020-07-20 11:38:46,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:38:46,036 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 624 transitions. [2020-07-20 11:38:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-20 11:38:46,042 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:46,043 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] [2020-07-20 11:38:46,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:46,255 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:46,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:46,256 INFO L82 PathProgramCache]: Analyzing trace with hash 952189433, now seen corresponding path program 1 times [2020-07-20 11:38:46,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:46,258 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106555030] [2020-07-20 11:38:46,258 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 [2020-07-20 11:38:46,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:46,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 273 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:38:46,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:46,367 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:46,368 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:38:46,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106555030] [2020-07-20 11:38:46,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:38:46,369 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:38:46,369 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370570967] [2020-07-20 11:38:46,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:38:46,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:46,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:38:46,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:38:46,371 INFO L87 Difference]: Start difference. First operand 443 states and 624 transitions. Second operand 3 states. [2020-07-20 11:38:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:47,083 INFO L93 Difference]: Finished difference Result 1313 states and 1889 transitions. [2020-07-20 11:38:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:38:47,084 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-20 11:38:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:47,090 INFO L225 Difference]: With dead ends: 1313 [2020-07-20 11:38:47,091 INFO L226 Difference]: Without dead ends: 876 [2020-07-20 11:38:47,092 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 [2020-07-20 11:38:47,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 876 states. [2020-07-20 11:38:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 876 to 731. [2020-07-20 11:38:47,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 731 states. [2020-07-20 11:38:47,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1040 transitions. [2020-07-20 11:38:47,127 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1040 transitions. Word has length 134 [2020-07-20 11:38:47,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:47,128 INFO L479 AbstractCegarLoop]: Abstraction has 731 states and 1040 transitions. [2020-07-20 11:38:47,128 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:38:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1040 transitions. [2020-07-20 11:38:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-07-20 11:38:47,134 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:47,134 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] [2020-07-20 11:38:47,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:47,348 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:47,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:47,348 INFO L82 PathProgramCache]: Analyzing trace with hash -296475546, now seen corresponding path program 1 times [2020-07-20 11:38:47,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:47,349 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6735116] [2020-07-20 11:38:47,349 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 [2020-07-20 11:38:47,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:47,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:38:47,425 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:47,502 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:38:47,503 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6735116] [2020-07-20 11:38:47,503 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:38:47,504 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:38:47,504 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056526812] [2020-07-20 11:38:47,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:38:47,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:47,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:38:47,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:38:47,510 INFO L87 Difference]: Start difference. First operand 731 states and 1040 transitions. Second operand 5 states. [2020-07-20 11:38:48,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:48,502 INFO L93 Difference]: Finished difference Result 1476 states and 2124 transitions. [2020-07-20 11:38:48,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:38:48,502 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-07-20 11:38:48,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:48,508 INFO L225 Difference]: With dead ends: 1476 [2020-07-20 11:38:48,508 INFO L226 Difference]: Without dead ends: 751 [2020-07-20 11:38:48,511 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 [2020-07-20 11:38:48,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2020-07-20 11:38:48,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 739. [2020-07-20 11:38:48,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 739 states. [2020-07-20 11:38:48,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 739 states to 739 states and 906 transitions. [2020-07-20 11:38:48,543 INFO L78 Accepts]: Start accepts. Automaton has 739 states and 906 transitions. Word has length 167 [2020-07-20 11:38:48,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:48,545 INFO L479 AbstractCegarLoop]: Abstraction has 739 states and 906 transitions. [2020-07-20 11:38:48,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:38:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 739 states and 906 transitions. [2020-07-20 11:38:48,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-07-20 11:38:48,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:48,550 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] [2020-07-20 11:38:48,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:48,763 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:48,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:48,764 INFO L82 PathProgramCache]: Analyzing trace with hash 528848677, now seen corresponding path program 1 times [2020-07-20 11:38:48,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:48,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [61300418] [2020-07-20 11:38:48,765 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 [2020-07-20 11:38:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:48,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 11 conjunts are in the unsatisfiable core [2020-07-20 11:38:48,846 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:48,914 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:48,914 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:38:48,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [61300418] [2020-07-20 11:38:48,915 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:38:48,915 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:38:48,915 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986112527] [2020-07-20 11:38:48,916 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:38:48,916 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:48,917 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:38:48,917 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:38:48,917 INFO L87 Difference]: Start difference. First operand 739 states and 906 transitions. Second operand 5 states. [2020-07-20 11:38:49,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:49,915 INFO L93 Difference]: Finished difference Result 1641 states and 1996 transitions. [2020-07-20 11:38:49,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:38:49,918 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 172 [2020-07-20 11:38:49,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:49,927 INFO L225 Difference]: With dead ends: 1641 [2020-07-20 11:38:49,927 INFO L226 Difference]: Without dead ends: 908 [2020-07-20 11:38:49,930 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 [2020-07-20 11:38:49,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2020-07-20 11:38:49,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 892. [2020-07-20 11:38:49,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-07-20 11:38:49,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1069 transitions. [2020-07-20 11:38:49,970 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1069 transitions. Word has length 172 [2020-07-20 11:38:49,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:49,970 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1069 transitions. [2020-07-20 11:38:49,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:38:49,971 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1069 transitions. [2020-07-20 11:38:49,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 238 [2020-07-20 11:38:49,976 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:49,976 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] [2020-07-20 11:38:50,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:50,190 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:50,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:50,191 INFO L82 PathProgramCache]: Analyzing trace with hash -1123243390, now seen corresponding path program 1 times [2020-07-20 11:38:50,192 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:50,192 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614185727] [2020-07-20 11:38:50,193 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 [2020-07-20 11:38:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:50,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 413 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:38:50,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:50,310 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:38:50,677 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-07-20 11:38:50,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:38:50,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614185727] [2020-07-20 11:38:50,679 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:38:50,679 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:38:50,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864334143] [2020-07-20 11:38:50,680 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:38:50,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:50,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:38:50,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:38:50,682 INFO L87 Difference]: Start difference. First operand 892 states and 1069 transitions. Second operand 3 states. [2020-07-20 11:38:51,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:51,636 INFO L93 Difference]: Finished difference Result 2219 states and 2749 transitions. [2020-07-20 11:38:51,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:38:51,641 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 237 [2020-07-20 11:38:51,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:51,650 INFO L225 Difference]: With dead ends: 2219 [2020-07-20 11:38:51,650 INFO L226 Difference]: Without dead ends: 1476 [2020-07-20 11:38:51,661 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 [2020-07-20 11:38:51,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1476 states. [2020-07-20 11:38:51,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1476 to 1333. [2020-07-20 11:38:51,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1333 states. [2020-07-20 11:38:51,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1605 transitions. [2020-07-20 11:38:51,706 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1605 transitions. Word has length 237 [2020-07-20 11:38:51,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:51,707 INFO L479 AbstractCegarLoop]: Abstraction has 1333 states and 1605 transitions. [2020-07-20 11:38:51,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:38:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1605 transitions. [2020-07-20 11:38:51,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-07-20 11:38:51,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:51,713 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] [2020-07-20 11:38:51,926 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:51,927 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:51,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:51,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1661435255, now seen corresponding path program 1 times [2020-07-20 11:38:51,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:51,929 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [681137882] [2020-07-20 11:38:51,929 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 [2020-07-20 11:38:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:52,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 416 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:38:52,020 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:52,051 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 11:38:52,051 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:38:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:52,111 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:38:52,197 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:38:52,198 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:38:52,200 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[3, 2, 1] term [2020-07-20 11:38:52,200 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:38:52,401 INFO L134 CoverageAnalysis]: Checked inductivity of 166 backedges. 164 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:52,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [681137882] [2020-07-20 11:38:52,401 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:38:52,402 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:38:52,402 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341788309] [2020-07-20 11:38:52,403 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:38:52,403 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:52,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:38:52,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:38:52,404 INFO L87 Difference]: Start difference. First operand 1333 states and 1605 transitions. Second operand 6 states. [2020-07-20 11:38:53,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:53,512 INFO L93 Difference]: Finished difference Result 2843 states and 3572 transitions. [2020-07-20 11:38:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:38:53,513 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 242 [2020-07-20 11:38:53,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:53,523 INFO L225 Difference]: With dead ends: 2843 [2020-07-20 11:38:53,523 INFO L226 Difference]: Without dead ends: 1659 [2020-07-20 11:38:53,527 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 [2020-07-20 11:38:53,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1659 states. [2020-07-20 11:38:53,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1659 to 1633. [2020-07-20 11:38:53,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1633 states. [2020-07-20 11:38:53,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1633 states to 1633 states and 1973 transitions. [2020-07-20 11:38:53,575 INFO L78 Accepts]: Start accepts. Automaton has 1633 states and 1973 transitions. Word has length 242 [2020-07-20 11:38:53,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:53,576 INFO L479 AbstractCegarLoop]: Abstraction has 1633 states and 1973 transitions. [2020-07-20 11:38:53,576 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:38:53,576 INFO L276 IsEmpty]: Start isEmpty. Operand 1633 states and 1973 transitions. [2020-07-20 11:38:53,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2020-07-20 11:38:53,581 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:53,581 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] [2020-07-20 11:38:53,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:53,796 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:53,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:53,796 INFO L82 PathProgramCache]: Analyzing trace with hash -14922590, now seen corresponding path program 1 times [2020-07-20 11:38:53,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:53,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [382622833] [2020-07-20 11:38:53,797 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 [2020-07-20 11:38:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:53,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:38:53,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:53,957 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:53,958 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:38:54,134 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 173 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:38:54,134 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [382622833] [2020-07-20 11:38:54,134 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:38:54,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:38:54,135 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809353959] [2020-07-20 11:38:54,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:38:54,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:38:54,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:38:54,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:38:54,138 INFO L87 Difference]: Start difference. First operand 1633 states and 1973 transitions. Second operand 6 states. [2020-07-20 11:38:55,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:38:55,274 INFO L93 Difference]: Finished difference Result 3874 states and 4792 transitions. [2020-07-20 11:38:55,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:38:55,274 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 251 [2020-07-20 11:38:55,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:38:55,283 INFO L225 Difference]: With dead ends: 3874 [2020-07-20 11:38:55,284 INFO L226 Difference]: Without dead ends: 1655 [2020-07-20 11:38:55,289 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 [2020-07-20 11:38:55,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1655 states. [2020-07-20 11:38:55,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1655 to 1629. [2020-07-20 11:38:55,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1629 states. [2020-07-20 11:38:55,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1629 states to 1629 states and 1905 transitions. [2020-07-20 11:38:55,339 INFO L78 Accepts]: Start accepts. Automaton has 1629 states and 1905 transitions. Word has length 251 [2020-07-20 11:38:55,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:38:55,341 INFO L479 AbstractCegarLoop]: Abstraction has 1629 states and 1905 transitions. [2020-07-20 11:38:55,341 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:38:55,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1629 states and 1905 transitions. [2020-07-20 11:38:55,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2020-07-20 11:38:55,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:38:55,348 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] [2020-07-20 11:38:55,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:38:55,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:38:55,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:38:55,564 INFO L82 PathProgramCache]: Analyzing trace with hash 253048858, now seen corresponding path program 1 times [2020-07-20 11:38:55,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:38:55,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858876005] [2020-07-20 11:38:55,565 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 [2020-07-20 11:38:55,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:38:55,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 461 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:38:55,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:38:55,697 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:38:55,698 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:38:55,700 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 11:38:55,701 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 11:38:55,705 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:38:55,708 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 11:38:55,711 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 11:38:55,712 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:10,587 WARN L193 SmtUtils]: Spent 14.84 s on a formula simplification. DAG size of input: 46 DAG size of output: 33 [2020-07-20 11:39:10,615 INFO L501 QuantifierPusher]: Distributing 3 conjuncts over 2 disjuncts [2020-07-20 11:39:10,721 INFO L320 QuantifierPusher]: Applying distributivity to a CONJUNCTION[2, 2, 2, 1] term [2020-07-20 11:39:10,721 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:39:10,722 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:39:10,752 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:39:10,888 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 209 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:39:10,889 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:39:10,997 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 11:39:10,998 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:39:10,998 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:39:10,999 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 11:39:11,021 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:39:11,022 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 11:39:11,174 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:39:11,176 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:39:11,176 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:39:11,177 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:39:11,179 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 11:39:11,179 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:39:11,180 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:39:11,181 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:39:11,182 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:39:11,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858876005] [2020-07-20 11:39:11,281 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-20 11:39:11,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-07-20 11:39:11,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824012756] [2020-07-20 11:39:11,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:39:11,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:39:11,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:39:11,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-20 11:39:11,283 INFO L87 Difference]: Start difference. First operand 1629 states and 1905 transitions. Second operand 8 states. [2020-07-20 11:39:14,203 WARN L193 SmtUtils]: Spent 2.22 s on a formula simplification. DAG size of input: 48 DAG size of output: 33 [2020-07-20 11:39:18,081 WARN L193 SmtUtils]: Spent 2.21 s on a formula simplification. DAG size of input: 39 DAG size of output: 25 [2020-07-20 11:39:44,507 WARN L193 SmtUtils]: Spent 24.85 s on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-07-20 11:39:46,879 WARN L193 SmtUtils]: Spent 2.08 s on a formula simplification. DAG size of input: 41 DAG size of output: 27 [2020-07-20 11:39:47,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:39:47,149 INFO L93 Difference]: Finished difference Result 4307 states and 5182 transitions. [2020-07-20 11:39:47,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-20 11:39:47,157 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 287 [2020-07-20 11:39:47,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:39:47,171 INFO L225 Difference]: With dead ends: 4307 [2020-07-20 11:39:47,171 INFO L226 Difference]: Without dead ends: 2827 [2020-07-20 11:39:47,176 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 466 GetRequests, 443 SyntacticMatches, 2 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 46.7s TimeCoverageRelationStatistics Valid=158, Invalid=348, Unknown=0, NotChecked=0, Total=506 [2020-07-20 11:39:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2827 states. [2020-07-20 11:39:47,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2827 to 2660. [2020-07-20 11:39:47,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2660 states. [2020-07-20 11:39:47,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2660 states to 2660 states and 3206 transitions. [2020-07-20 11:39:47,258 INFO L78 Accepts]: Start accepts. Automaton has 2660 states and 3206 transitions. Word has length 287 [2020-07-20 11:39:47,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:39:47,258 INFO L479 AbstractCegarLoop]: Abstraction has 2660 states and 3206 transitions. [2020-07-20 11:39:47,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:39:47,259 INFO L276 IsEmpty]: Start isEmpty. Operand 2660 states and 3206 transitions. [2020-07-20 11:39:47,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 307 [2020-07-20 11:39:47,268 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:39:47,269 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] [2020-07-20 11:39:47,483 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:39:47,484 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:39:47,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:39:47,485 INFO L82 PathProgramCache]: Analyzing trace with hash 273888777, now seen corresponding path program 1 times [2020-07-20 11:39:47,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:39:47,486 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1623003031] [2020-07-20 11:39:47,486 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 [2020-07-20 11:39:47,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:39:47,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 478 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 11:39:47,587 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:39:47,633 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 11:39:47,634 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 11:39:47,635 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,636 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,636 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,637 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,638 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,639 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-20 11:39:47,640 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,641 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,642 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,642 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,643 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,644 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,645 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,646 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,647 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,648 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,649 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,651 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,651 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,652 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-20 11:39:47,653 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,654 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 9 disjuncts [2020-07-20 11:39:47,655 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,656 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,657 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,658 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 11:39:47,659 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,660 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,661 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,662 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,663 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,663 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,665 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,666 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,667 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,668 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,668 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,669 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,670 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,671 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,672 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,673 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-07-20 11:39:47,675 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,676 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,678 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,679 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,680 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,681 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,682 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,683 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 8 disjuncts [2020-07-20 11:39:47,684 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,685 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,685 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,686 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,687 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,688 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,689 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,690 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,691 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,691 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,692 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,693 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,694 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,695 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,696 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,697 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,698 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:39:47,699 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 5 disjuncts [2020-07-20 11:39:47,700 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,701 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,701 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 6 disjuncts [2020-07-20 11:39:47,702 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 7 disjuncts [2020-07-20 11:40:40,884 WARN L193 SmtUtils]: Spent 50.40 s on a formula simplification. DAG size of input: 242 DAG size of output: 54 [2020-07-20 11:40:53,360 WARN L193 SmtUtils]: Spent 8.26 s on a formula simplification that was a NOOP. DAG size: 109 [2020-07-20 11:40:53,365 INFO L501 QuantifierPusher]: Distributing 5 conjuncts over 2 disjuncts [2020-07-20 11:41:01,847 WARN L193 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 91 DAG size of output: 28 [2020-07-20 11:41:02,108 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 6 proven. 96 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-07-20 11:41:02,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:41:02,391 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,392 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,393 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,394 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,395 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,396 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,396 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,398 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,398 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,399 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,400 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,401 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,401 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,402 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,404 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,404 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:41:02,405 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,405 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,406 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,407 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,409 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,410 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,411 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,412 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,412 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,414 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,414 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,415 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,416 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,416 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,417 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,418 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,418 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 9 conjuncts [2020-07-20 11:41:02,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,420 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,421 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,422 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,423 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,424 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 3 conjuncts [2020-07-20 11:41:02,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,425 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,426 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,426 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,427 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,428 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,429 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,429 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,430 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,430 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,431 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,432 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,433 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,434 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,435 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,436 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,437 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 8 conjuncts [2020-07-20 11:41:02,438 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:41:02,439 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:41:02,439 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,440 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,441 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,442 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,443 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,444 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,445 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,446 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,446 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,447 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,448 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,449 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,450 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,451 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,452 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,453 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 4 conjuncts [2020-07-20 11:41:02,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,454 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,455 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,456 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,457 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,457 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,458 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,459 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,459 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,460 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 5 conjuncts [2020-07-20 11:41:02,461 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,462 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,463 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,463 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,464 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 6 conjuncts [2020-07-20 11:41:02,465 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 7 conjuncts [2020-07-20 11:41:02,868 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,869 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,874 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,875 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,876 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,876 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:02,877 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 11:41:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 213 backedges. 99 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2020-07-20 11:41:03,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1623003031] [2020-07-20 11:41:03,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-07-20 11:41:03,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2020-07-20 11:41:03,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2072094576] [2020-07-20 11:41:03,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:41:03,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:03,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:41:03,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=56, Unknown=6, NotChecked=0, Total=90 [2020-07-20 11:41:03,085 INFO L87 Difference]: Start difference. First operand 2660 states and 3206 transitions. Second operand 3 states. [2020-07-20 11:41:06,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:06,509 INFO L93 Difference]: Finished difference Result 5314 states and 6404 transitions. [2020-07-20 11:41:06,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:41:06,516 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 306 [2020-07-20 11:41:06,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:06,529 INFO L225 Difference]: With dead ends: 5314 [2020-07-20 11:41:06,529 INFO L226 Difference]: Without dead ends: 2658 [2020-07-20 11:41:06,536 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 611 GetRequests, 601 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.5s TimeCoverageRelationStatistics Valid=28, Invalid=56, Unknown=6, NotChecked=0, Total=90 [2020-07-20 11:41:06,539 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2658 states. [2020-07-20 11:41:06,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2658 to 2658. [2020-07-20 11:41:06,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2658 states. [2020-07-20 11:41:06,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2658 states to 2658 states and 3165 transitions. [2020-07-20 11:41:06,599 INFO L78 Accepts]: Start accepts. Automaton has 2658 states and 3165 transitions. Word has length 306 [2020-07-20 11:41:06,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:06,599 INFO L479 AbstractCegarLoop]: Abstraction has 2658 states and 3165 transitions. [2020-07-20 11:41:06,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:41:06,599 INFO L276 IsEmpty]: Start isEmpty. Operand 2658 states and 3165 transitions. [2020-07-20 11:41:06,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-07-20 11:41:06,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:41:06,612 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] [2020-07-20 11:41:06,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:06,826 INFO L427 AbstractCegarLoop]: === Iteration 11 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:41:06,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:41:06,826 INFO L82 PathProgramCache]: Analyzing trace with hash 466916981, now seen corresponding path program 1 times [2020-07-20 11:41:06,826 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:41:06,827 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849323050] [2020-07-20 11:41:06,827 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 [2020-07-20 11:41:06,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:41:06,956 INFO L263 TraceCheckSpWp]: Trace formula consists of 634 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:41:06,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:41:07,125 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 150 proven. 0 refuted. 0 times theorem prover too weak. 324 trivial. 0 not checked. [2020-07-20 11:41:07,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:41:07,129 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849323050] [2020-07-20 11:41:07,129 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:41:07,129 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:41:07,130 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [221783749] [2020-07-20 11:41:07,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:41:07,131 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:41:07,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:41:07,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:41:07,132 INFO L87 Difference]: Start difference. First operand 2658 states and 3165 transitions. Second operand 3 states. [2020-07-20 11:41:10,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:41:10,162 INFO L93 Difference]: Finished difference Result 2658 states and 3165 transitions. [2020-07-20 11:41:10,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:41:10,171 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 420 [2020-07-20 11:41:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:41:10,172 INFO L225 Difference]: With dead ends: 2658 [2020-07-20 11:41:10,173 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:41:10,177 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 [2020-07-20 11:41:10,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:41:10,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:41:10,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:41:10,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:41:10,178 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 420 [2020-07-20 11:41:10,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:41:10,178 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:41:10,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:41:10,178 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:41:10,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:41:10,388 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:41:10,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:41:11,367 WARN L193 SmtUtils]: Spent 244.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 24 [2020-07-20 11:41:13,168 WARN L193 SmtUtils]: Spent 1.79 s on a formula simplification. DAG size of input: 142 DAG size of output: 30 [2020-07-20 11:41:14,867 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 137 DAG size of output: 25 [2020-07-20 11:41:16,485 WARN L193 SmtUtils]: Spent 1.61 s on a formula simplification. DAG size of input: 137 DAG size of output: 25 [2020-07-20 11:41:16,491 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:41:16,491 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)|)) [2020-07-20 11:41:16,491 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:41:16,491 INFO L268 CegarLoopResult]: For program point L465(lines 465 572) no Hoare annotation was computed. [2020-07-20 11:41:16,491 INFO L268 CegarLoopResult]: For program point L201-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,491 INFO L268 CegarLoopResult]: For program point L168-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,491 INFO L268 CegarLoopResult]: For program point L135-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L102-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L69-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L36-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L499(lines 499 572) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L301(lines 301 572) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L202(line 202) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L169(line 169) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L136(line 136) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L103(line 103) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L70(line 70) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-07-20 11:41:16,492 INFO L268 CegarLoopResult]: For program point L335(lines 335 572) no Hoare annotation was computed. [2020-07-20 11:41:16,493 INFO L268 CegarLoopResult]: For program point L236(lines 236 572) no Hoare annotation was computed. [2020-07-20 11:41:16,493 INFO L268 CegarLoopResult]: For program point L534(lines 534 572) no Hoare annotation was computed. [2020-07-20 11:41:16,493 INFO L268 CegarLoopResult]: For program point L171-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,493 INFO L268 CegarLoopResult]: For program point L138-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,493 INFO L268 CegarLoopResult]: For program point L105-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,494 INFO L268 CegarLoopResult]: For program point L72-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,494 INFO L268 CegarLoopResult]: For program point L39-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,494 INFO L268 CegarLoopResult]: For program point L436(lines 436 572) no Hoare annotation was computed. [2020-07-20 11:41:16,494 INFO L268 CegarLoopResult]: For program point L403(lines 403 572) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L370(lines 370 572) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L271(lines 271 572) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L172(line 172) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L139(line 139) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L106(line 106) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L40(line 40) no Hoare annotation was computed. [2020-07-20 11:41:16,495 INFO L268 CegarLoopResult]: For program point L569(lines 569 572) no Hoare annotation was computed. [2020-07-20 11:41:16,496 INFO L268 CegarLoopResult]: For program point L239(lines 239 572) no Hoare annotation was computed. [2020-07-20 11:41:16,496 INFO L268 CegarLoopResult]: For program point L504(lines 504 572) no Hoare annotation was computed. [2020-07-20 11:41:16,496 INFO L268 CegarLoopResult]: For program point L471(lines 471 572) no Hoare annotation was computed. [2020-07-20 11:41:16,496 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 151) no Hoare annotation was computed. [2020-07-20 11:41:16,496 INFO L268 CegarLoopResult]: For program point L306(lines 306 572) no Hoare annotation was computed. [2020-07-20 11:41:16,496 INFO L268 CegarLoopResult]: For program point L174-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,496 INFO L268 CegarLoopResult]: For program point L141-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L108-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L75-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L42-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L340(lines 340 572) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L142(line 142) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L109(line 109) no Hoare annotation was computed. [2020-07-20 11:41:16,497 INFO L268 CegarLoopResult]: For program point L76(line 76) no Hoare annotation was computed. [2020-07-20 11:41:16,498 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-07-20 11:41:16,498 INFO L268 CegarLoopResult]: For program point L540(lines 540 572) no Hoare annotation was computed. [2020-07-20 11:41:16,498 INFO L268 CegarLoopResult]: For program point L408(lines 408 572) no Hoare annotation was computed. [2020-07-20 11:41:16,498 INFO L268 CegarLoopResult]: For program point L375(lines 375 572) no Hoare annotation was computed. [2020-07-20 11:41:16,498 INFO L268 CegarLoopResult]: For program point L210(lines 210 572) no Hoare annotation was computed. [2020-07-20 11:41:16,498 INFO L268 CegarLoopResult]: For program point L177-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,498 INFO L268 CegarLoopResult]: For program point L144-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L111-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L78-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L45-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L442(lines 442 572) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L277(lines 277 572) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L244(lines 244 572) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L178(line 178) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L145(line 145) no Hoare annotation was computed. [2020-07-20 11:41:16,499 INFO L268 CegarLoopResult]: For program point L112(line 112) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L509(lines 509 572) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L476(lines 476 572) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L378(lines 378 572) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L345(lines 345 572) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L312(lines 312 572) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L180-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,500 INFO L268 CegarLoopResult]: For program point L147-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L114-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L81-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L48-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L181(line 181) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L148(line 148) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L82(line 82) no Hoare annotation was computed. [2020-07-20 11:41:16,501 INFO L268 CegarLoopResult]: For program point L49(line 49) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L545(lines 545 572) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L215(lines 215 572) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L414(lines 414 572) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L249(lines 249 572) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L183-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L150-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L117-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L84-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,502 INFO L268 CegarLoopResult]: For program point L51-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point L514(lines 514 572) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point L481(lines 481 572) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point L448(lines 448 572) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point L283(lines 283 572) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point L184(line 184) no Hoare annotation was computed. [2020-07-20 11:41:16,503 INFO L268 CegarLoopResult]: For program point L151(line 151) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L118(line 118) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L85(line 85) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L52(line 52) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L548(lines 548 572) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L383(lines 383 572) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L317(lines 317 572) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L351(lines 351 572) no Hoare annotation was computed. [2020-07-20 11:41:16,504 INFO L268 CegarLoopResult]: For program point L186-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L153-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L120-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L87-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L54-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L21-2(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L517(lines 517 572) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L286(lines 286 572) no Hoare annotation was computed. [2020-07-20 11:41:16,505 INFO L268 CegarLoopResult]: For program point L220(lines 220 572) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L154(line 154) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L121(line 121) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L419(lines 419 572) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L320(lines 320 572) no Hoare annotation was computed. [2020-07-20 11:41:16,506 INFO L268 CegarLoopResult]: For program point L254(lines 254 572) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L354(lines 354 572) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L189-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L156-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L123-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L90-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L57-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L24-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,507 INFO L268 CegarLoopResult]: For program point L487(lines 487 572) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L454(lines 454 572) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L388(lines 388 572) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L190(line 190) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L157(line 157) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L124(line 124) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L91(line 91) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 11:41:16,508 INFO L268 CegarLoopResult]: For program point L554(lines 554 572) no Hoare annotation was computed. [2020-07-20 11:41:16,509 INFO L268 CegarLoopResult]: For program point L323(lines 323 572) no Hoare annotation was computed. [2020-07-20 11:41:16,509 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)|)))))) [2020-07-20 11:41:16,509 INFO L268 CegarLoopResult]: For program point L357(lines 357 572) no Hoare annotation was computed. [2020-07-20 11:41:16,509 INFO L268 CegarLoopResult]: For program point L291(lines 291 572) no Hoare annotation was computed. [2020-07-20 11:41:16,509 INFO L268 CegarLoopResult]: For program point L225(lines 225 572) no Hoare annotation was computed. [2020-07-20 11:41:16,509 INFO L268 CegarLoopResult]: For program point L192-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,509 INFO L268 CegarLoopResult]: For program point L159-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L126-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L93-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L60-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L27-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L523(lines 523 572) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L193(line 193) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L160(line 160) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L127(line 127) no Hoare annotation was computed. [2020-07-20 11:41:16,510 INFO L268 CegarLoopResult]: For program point L94(line 94) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L557(lines 557 572) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L425(lines 425 572) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L326(lines 326 572) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L260(lines 260 572) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L393(lines 393 572) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L360(lines 360 572) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L195-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,511 INFO L268 CegarLoopResult]: For program point L162-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L129-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L96-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L63-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L30-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L526(lines 526 572) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L493(lines 493 572) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L460(lines 460 572) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L196(line 196) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L163(line 163) no Hoare annotation was computed. [2020-07-20 11:41:16,512 INFO L268 CegarLoopResult]: For program point L130(line 130) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L329(lines 329 572) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L296(lines 296 572) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L231(lines 231 572) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L198-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L165-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L132-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,513 INFO L268 CegarLoopResult]: For program point L99-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L66-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L33-1(lines 20 574) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L529(lines 529 572) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L430(lines 430 572) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L265(lines 265 572) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L199(line 199) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L166(line 166) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L133(line 133) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-20 11:41:16,514 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-07-20 11:41:16,515 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-07-20 11:41:16,515 INFO L268 CegarLoopResult]: For program point L563(lines 563 572) no Hoare annotation was computed. [2020-07-20 11:41:16,515 INFO L268 CegarLoopResult]: For program point L398(lines 398 572) no Hoare annotation was computed. [2020-07-20 11:41:16,515 INFO L268 CegarLoopResult]: For program point L365(lines 365 572) no Hoare annotation was computed. [2020-07-20 11:41:16,515 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:41:16,515 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)) [2020-07-20 11:41:16,515 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:41:16,515 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:41:16,515 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)|))) [2020-07-20 11:41:16,516 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 576 592) no Hoare annotation was computed. [2020-07-20 11:41:16,516 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))) [2020-07-20 11:41:16,516 INFO L268 CegarLoopResult]: For program point L590-1(line 590) no Hoare annotation was computed. [2020-07-20 11:41:16,516 INFO L268 CegarLoopResult]: For program point L587(line 587) no Hoare annotation was computed. [2020-07-20 11:41:16,516 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))) [2020-07-20 11:41:16,516 INFO L268 CegarLoopResult]: For program point L582-3(lines 576 592) no Hoare annotation was computed. [2020-07-20 11:41:16,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:41:16 BoogieIcfgContainer [2020-07-20 11:41:16,535 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:41:16,537 INFO L168 Benchmark]: Toolchain (without parser) took 155724.58 ms. Allocated memory was 134.7 MB in the beginning and 567.3 MB in the end (delta: 432.5 MB). Free memory was 98.0 MB in the beginning and 130.3 MB in the end (delta: -32.2 MB). Peak memory consumption was 400.3 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:16,537 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 11:41:16,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 683.55 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 97.8 MB in the beginning and 168.4 MB in the end (delta: -70.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:16,539 INFO L168 Benchmark]: Boogie Preprocessor took 110.57 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 163.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:16,539 INFO L168 Benchmark]: RCFGBuilder took 1450.37 ms. Allocated memory was 201.9 MB in the beginning and 227.5 MB in the end (delta: 25.7 MB). Free memory was 163.7 MB in the beginning and 178.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 90.9 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:16,540 INFO L168 Benchmark]: TraceAbstraction took 153471.95 ms. Allocated memory was 227.5 MB in the beginning and 567.3 MB in the end (delta: 339.7 MB). Free memory was 178.8 MB in the beginning and 130.3 MB in the end (delta: 48.5 MB). Peak memory consumption was 388.2 MB. Max. memory is 7.1 GB. [2020-07-20 11:41:16,543 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 134.7 MB. Free memory was 117.8 MB in the beginning and 117.6 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 683.55 ms. Allocated memory was 134.7 MB in the beginning and 201.9 MB in the end (delta: 67.1 MB). Free memory was 97.8 MB in the beginning and 168.4 MB in the end (delta: -70.5 MB). Peak memory consumption was 35.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.57 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 163.7 MB in the end (delta: 4.6 MB). Peak memory consumption was 4.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1450.37 ms. Allocated memory was 201.9 MB in the beginning and 227.5 MB in the end (delta: 25.7 MB). Free memory was 163.7 MB in the beginning and 178.8 MB in the end (delta: -15.0 MB). Peak memory consumption was 90.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 153471.95 ms. Allocated memory was 227.5 MB in the beginning and 567.3 MB in the end (delta: 339.7 MB). Free memory was 178.8 MB in the beginning and 130.3 MB in the end (delta: 48.5 MB). Peak memory consumption was 388.2 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: 147.2s, OverallIterations: 11, TraceHistogramMax: 4, AutomataDifference: 50.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 6.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1052 SDtfs, 2328 SDslu, 300 SDs, 0 SdLazy, 7081 SolverSat, 1233 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 10.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 3387 GetRequests, 3315 SyntacticMatches, 8 SemanticMatches, 64 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 121.6s 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, 0.6s HoareSimplificationTime, 7 FomulaSimplificationsInter, 6768 FormulaSimplificationTreeSizeReductionInter, 5.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 92.7s InterpolantComputationTime, 2399 NumberOfCodeBlocks, 2399 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 3184 ConstructedInterpolants, 108 QuantifiedInterpolants, 3234236 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...