/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/Problem01_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 11:33:53,440 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-07-20 11:33:53,455 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 11:33:53,456 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 11:33:53,458 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 11:33:53,460 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 11:33:53,462 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 11:33:53,463 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 11:33:53,464 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 11:33:53,465 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 11:33:53,465 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 11:33:53,466 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 11:33:53,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 11:33:53,469 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 11:33:53,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 11:33:53,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 11:33:53,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 11:33:53,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 11:33:53,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 11:33:53,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 11:33:53,478 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 11:33:53,479 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 11:33:53,482 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 11:33:53,490 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 11:33:53,491 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 11:33:53,492 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 11:33:53,493 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 11:33:53,515 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 11:33:53,515 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 11:33:53,516 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 11:33:53,517 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 11:33:53,517 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 11:33:53,517 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 11:33:53,517 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 11:33:53,517 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 11:33:53,518 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 11:33:53,518 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 11:33:53,518 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 11:33:53,518 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 11:33:53,518 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 11:33:53,519 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 11:33:53,519 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 11:33:53,519 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 11:33:53,519 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 11:33:53,519 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 11:33:53,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 11:33:53,520 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 11:33:53,520 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 11:33:53,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 11:33:53,520 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 11:33:53,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 11:33:53,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 11:33:53,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 11:33:53,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:53,521 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 11:33:53,521 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 11:33:53,522 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 11:33:53,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 11:33:53,825 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 11:33:53,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 11:33:53,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 11:33:53,833 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 11:33:53,834 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-07-20 11:33:53,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc31e163e/c593047299a54000bbdf4a2f104e200d/FLAGaa41bd58b [2020-07-20 11:33:54,538 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 11:33:54,539 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/eca-rers2012/Problem01_label43.c [2020-07-20 11:33:54,569 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc31e163e/c593047299a54000bbdf4a2f104e200d/FLAGaa41bd58b [2020-07-20 11:33:54,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fc31e163e/c593047299a54000bbdf4a2f104e200d [2020-07-20 11:33:54,822 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 11:33:54,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 11:33:54,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 11:33:54,827 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 11:33:54,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 11:33:54,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:33:54" (1/1) ... [2020-07-20 11:33:54,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@82fd315 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:54, skipping insertion in model container [2020-07-20 11:33:54,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 11:33:54" (1/1) ... [2020-07-20 11:33:54,842 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 11:33:54,907 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 11:33:55,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:33:55,449 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 11:33:55,538 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 11:33:55,557 INFO L208 MainTranslator]: Completed translation [2020-07-20 11:33:55,557 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55 WrapperNode [2020-07-20 11:33:55,557 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 11:33:55,558 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 11:33:55,558 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 11:33:55,558 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 11:33:55,569 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (1/1) ... [2020-07-20 11:33:55,570 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (1/1) ... [2020-07-20 11:33:55,588 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (1/1) ... [2020-07-20 11:33:55,588 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (1/1) ... [2020-07-20 11:33:55,631 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (1/1) ... [2020-07-20 11:33:55,646 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (1/1) ... [2020-07-20 11:33:55,651 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (1/1) ... [2020-07-20 11:33:55,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 11:33:55,659 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 11:33:55,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 11:33:55,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 11:33:55,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (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 11:33:55,726 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 11:33:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 11:33:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-07-20 11:33:55,727 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 11:33:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-07-20 11:33:55,727 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 11:33:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-20 11:33:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-20 11:33:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 11:33:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 11:33:55,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 11:33:56,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 11:33:56,949 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 11:33:56,960 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:33:56 BoogieIcfgContainer [2020-07-20 11:33:56,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 11:33:56,966 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 11:33:56,966 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 11:33:56,969 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 11:33:56,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 11:33:54" (1/3) ... [2020-07-20 11:33:56,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1113d152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:33:56, skipping insertion in model container [2020-07-20 11:33:56,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 11:33:55" (2/3) ... [2020-07-20 11:33:56,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1113d152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 11:33:56, skipping insertion in model container [2020-07-20 11:33:56,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 11:33:56" (3/3) ... [2020-07-20 11:33:56,976 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem01_label43.c [2020-07-20 11:33:56,989 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 11:33:57,004 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 11:33:57,022 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 11:33:57,057 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 11:33:57,058 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 11:33:57,058 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 11:33:57,058 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 11:33:57,059 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 11:33:57,059 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 11:33:57,059 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 11:33:57,060 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 11:33:57,087 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states. [2020-07-20 11:33:57,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-07-20 11:33:57,112 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:57,113 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:33:57,114 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:57,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:57,121 INFO L82 PathProgramCache]: Analyzing trace with hash -1457340122, now seen corresponding path program 1 times [2020-07-20 11:33:57,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:57,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [231588857] [2020-07-20 11:33:57,132 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 11:33:57,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:57,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:33:57,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:57,430 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 11:33:57,431 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:33:57,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [231588857] [2020-07-20 11:33:57,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:33:57,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:33:57,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463667672] [2020-07-20 11:33:57,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:33:57,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:57,454 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:33:57,455 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:33:57,457 INFO L87 Difference]: Start difference. First operand 207 states. Second operand 3 states. [2020-07-20 11:33:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:58,338 INFO L93 Difference]: Finished difference Result 547 states and 938 transitions. [2020-07-20 11:33:58,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:33:58,340 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 134 [2020-07-20 11:33:58,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:58,359 INFO L225 Difference]: With dead ends: 547 [2020-07-20 11:33:58,360 INFO L226 Difference]: Without dead ends: 278 [2020-07-20 11:33:58,367 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 11:33:58,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-07-20 11:33:58,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 278. [2020-07-20 11:33:58,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 278 states. [2020-07-20 11:33:58,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 406 transitions. [2020-07-20 11:33:58,446 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 406 transitions. Word has length 134 [2020-07-20 11:33:58,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:58,447 INFO L479 AbstractCegarLoop]: Abstraction has 278 states and 406 transitions. [2020-07-20 11:33:58,447 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:33:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 406 transitions. [2020-07-20 11:33:58,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2020-07-20 11:33:58,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:58,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:33:58,665 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:58,666 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:58,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:58,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1707028349, now seen corresponding path program 1 times [2020-07-20 11:33:58,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:58,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [380740512] [2020-07-20 11:33:58,668 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 11:33:58,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:33:58,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 381 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:33:58,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:33:58,817 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:33:58,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:33:58,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [380740512] [2020-07-20 11:33:58,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:33:58,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:33:58,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993753799] [2020-07-20 11:33:58,821 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:33:58,822 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:33:58,822 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:33:58,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:33:58,823 INFO L87 Difference]: Start difference. First operand 278 states and 406 transitions. Second operand 5 states. [2020-07-20 11:33:59,679 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:33:59,680 INFO L93 Difference]: Finished difference Result 842 states and 1252 transitions. [2020-07-20 11:33:59,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:33:59,682 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 143 [2020-07-20 11:33:59,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:33:59,688 INFO L225 Difference]: With dead ends: 842 [2020-07-20 11:33:59,689 INFO L226 Difference]: Without dead ends: 570 [2020-07-20 11:33:59,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 139 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 11:33:59,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 570 states. [2020-07-20 11:33:59,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 570 to 556. [2020-07-20 11:33:59,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 556 states. [2020-07-20 11:33:59,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 556 states to 556 states and 785 transitions. [2020-07-20 11:33:59,762 INFO L78 Accepts]: Start accepts. Automaton has 556 states and 785 transitions. Word has length 143 [2020-07-20 11:33:59,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:33:59,763 INFO L479 AbstractCegarLoop]: Abstraction has 556 states and 785 transitions. [2020-07-20 11:33:59,763 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:33:59,763 INFO L276 IsEmpty]: Start isEmpty. Operand 556 states and 785 transitions. [2020-07-20 11:33:59,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-07-20 11:33:59,776 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:33:59,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 11:33:59,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:33:59,979 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:33:59,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:33:59,980 INFO L82 PathProgramCache]: Analyzing trace with hash -1025958774, now seen corresponding path program 1 times [2020-07-20 11:33:59,980 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:33:59,981 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037124454] [2020-07-20 11:33:59,981 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 11:34:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:34:00,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 446 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:34:00,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:34:00,170 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-20 11:34:00,170 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:34:00,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037124454] [2020-07-20 11:34:00,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:34:00,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:34:00,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988319750] [2020-07-20 11:34:00,172 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:34:00,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:34:00,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:34:00,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:34:00,173 INFO L87 Difference]: Start difference. First operand 556 states and 785 transitions. Second operand 3 states. [2020-07-20 11:34:00,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:34:00,792 INFO L93 Difference]: Finished difference Result 1654 states and 2396 transitions. [2020-07-20 11:34:00,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:34:00,793 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 154 [2020-07-20 11:34:00,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:34:00,801 INFO L225 Difference]: With dead ends: 1654 [2020-07-20 11:34:00,801 INFO L226 Difference]: Without dead ends: 1104 [2020-07-20 11:34:00,803 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 152 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 11:34:00,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1104 states. [2020-07-20 11:34:00,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1104 to 834. [2020-07-20 11:34:00,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 834 states. [2020-07-20 11:34:00,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 834 states to 834 states and 1162 transitions. [2020-07-20 11:34:00,857 INFO L78 Accepts]: Start accepts. Automaton has 834 states and 1162 transitions. Word has length 154 [2020-07-20 11:34:00,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:34:00,858 INFO L479 AbstractCegarLoop]: Abstraction has 834 states and 1162 transitions. [2020-07-20 11:34:00,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:34:00,858 INFO L276 IsEmpty]: Start isEmpty. Operand 834 states and 1162 transitions. [2020-07-20 11:34:00,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-07-20 11:34:00,862 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:34:00,862 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:01,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:34:01,078 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:34:01,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:34:01,079 INFO L82 PathProgramCache]: Analyzing trace with hash -496294631, now seen corresponding path program 1 times [2020-07-20 11:34:01,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:34:01,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1617547611] [2020-07-20 11:34:01,081 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 11:34:01,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:34:01,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-20 11:34:01,180 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:34:01,284 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:34:01,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:34:01,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1617547611] [2020-07-20 11:34:01,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:34:01,286 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 11:34:01,286 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [486564409] [2020-07-20 11:34:01,287 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 11:34:01,287 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:34:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 11:34:01,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 11:34:01,288 INFO L87 Difference]: Start difference. First operand 834 states and 1162 transitions. Second operand 5 states. [2020-07-20 11:34:02,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:34:02,099 INFO L93 Difference]: Finished difference Result 2244 states and 3195 transitions. [2020-07-20 11:34:02,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-20 11:34:02,102 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 162 [2020-07-20 11:34:02,102 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:34:02,117 INFO L225 Difference]: With dead ends: 2244 [2020-07-20 11:34:02,117 INFO L226 Difference]: Without dead ends: 1416 [2020-07-20 11:34:02,123 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 158 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 11:34:02,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1416 states. [2020-07-20 11:34:02,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1416 to 1404. [2020-07-20 11:34:02,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1404 states. [2020-07-20 11:34:02,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1404 states to 1404 states and 1899 transitions. [2020-07-20 11:34:02,179 INFO L78 Accepts]: Start accepts. Automaton has 1404 states and 1899 transitions. Word has length 162 [2020-07-20 11:34:02,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:34:02,180 INFO L479 AbstractCegarLoop]: Abstraction has 1404 states and 1899 transitions. [2020-07-20 11:34:02,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 11:34:02,180 INFO L276 IsEmpty]: Start isEmpty. Operand 1404 states and 1899 transitions. [2020-07-20 11:34:02,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-07-20 11:34:02,186 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:34:02,186 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:02,400 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:34:02,401 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:34:02,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:34:02,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1675900338, now seen corresponding path program 1 times [2020-07-20 11:34:02,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:34:02,403 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814186896] [2020-07-20 11:34:02,403 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 11:34:02,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:34:02,493 INFO L263 TraceCheckSpWp]: Trace formula consists of 458 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:34:02,496 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:34:02,572 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:34:02,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:34:02,690 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 42 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:34:02,691 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814186896] [2020-07-20 11:34:02,691 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:34:02,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 11:34:02,692 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546952090] [2020-07-20 11:34:02,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 11:34:02,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:34:02,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 11:34:02,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-07-20 11:34:02,694 INFO L87 Difference]: Start difference. First operand 1404 states and 1899 transitions. Second operand 8 states. [2020-07-20 11:34:04,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:34:04,675 INFO L93 Difference]: Finished difference Result 5253 states and 7698 transitions. [2020-07-20 11:34:04,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 11:34:04,676 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-07-20 11:34:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:34:04,703 INFO L225 Difference]: With dead ends: 5253 [2020-07-20 11:34:04,704 INFO L226 Difference]: Without dead ends: 3855 [2020-07-20 11:34:04,710 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 343 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-20 11:34:04,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2020-07-20 11:34:04,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 2784. [2020-07-20 11:34:04,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2020-07-20 11:34:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3628 transitions. [2020-07-20 11:34:04,822 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3628 transitions. Word has length 173 [2020-07-20 11:34:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:34:04,823 INFO L479 AbstractCegarLoop]: Abstraction has 2784 states and 3628 transitions. [2020-07-20 11:34:04,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 11:34:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3628 transitions. [2020-07-20 11:34:04,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-07-20 11:34:04,832 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:34:04,832 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:05,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:34:05,047 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:34:05,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:34:05,048 INFO L82 PathProgramCache]: Analyzing trace with hash 951508270, now seen corresponding path program 1 times [2020-07-20 11:34:05,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:34:05,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1108839523] [2020-07-20 11:34:05,049 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 11:34:05,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:34:05,143 INFO L263 TraceCheckSpWp]: Trace formula consists of 467 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:34:05,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:34:05,218 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-07-20 11:34:05,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:34:05,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1108839523] [2020-07-20 11:34:05,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:34:05,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:34:05,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918596522] [2020-07-20 11:34:05,220 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:34:05,220 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:34:05,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:34:05,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:34:05,221 INFO L87 Difference]: Start difference. First operand 2784 states and 3628 transitions. Second operand 3 states. [2020-07-20 11:34:05,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:34:05,732 INFO L93 Difference]: Finished difference Result 4881 states and 6350 transitions. [2020-07-20 11:34:05,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:34:05,733 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 175 [2020-07-20 11:34:05,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:34:05,747 INFO L225 Difference]: With dead ends: 4881 [2020-07-20 11:34:05,756 INFO L226 Difference]: Without dead ends: 2784 [2020-07-20 11:34:05,763 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 173 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 11:34:05,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2784 states. [2020-07-20 11:34:05,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2784 to 2784. [2020-07-20 11:34:05,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2784 states. [2020-07-20 11:34:05,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 3501 transitions. [2020-07-20 11:34:05,844 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 3501 transitions. Word has length 175 [2020-07-20 11:34:05,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:34:05,845 INFO L479 AbstractCegarLoop]: Abstraction has 2784 states and 3501 transitions. [2020-07-20 11:34:05,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:34:05,846 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 3501 transitions. [2020-07-20 11:34:05,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-07-20 11:34:05,856 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:34:05,857 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 11:34:06,070 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:34:06,071 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:34:06,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:34:06,071 INFO L82 PathProgramCache]: Analyzing trace with hash 490449498, now seen corresponding path program 1 times [2020-07-20 11:34:06,072 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:34:06,072 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [698619481] [2020-07-20 11:34:06,072 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 11:34:06,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:34:06,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 11:34:06,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:34:06,243 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:34:06,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 11:34:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 86 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 11:34:06,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [698619481] [2020-07-20 11:34:06,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 11:34:06,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2020-07-20 11:34:06,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032615651] [2020-07-20 11:34:06,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 11:34:06,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:34:06,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 11:34:06,438 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-20 11:34:06,439 INFO L87 Difference]: Start difference. First operand 2784 states and 3501 transitions. Second operand 6 states. [2020-07-20 11:34:07,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:34:07,527 INFO L93 Difference]: Finished difference Result 6119 states and 8122 transitions. [2020-07-20 11:34:07,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 11:34:07,527 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 217 [2020-07-20 11:34:07,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:34:07,546 INFO L225 Difference]: With dead ends: 6119 [2020-07-20 11:34:07,547 INFO L226 Difference]: Without dead ends: 3345 [2020-07-20 11:34:07,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 439 GetRequests, 430 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 11:34:07,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3345 states. [2020-07-20 11:34:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3345 to 2669. [2020-07-20 11:34:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2669 states. [2020-07-20 11:34:07,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2669 states to 2669 states and 3304 transitions. [2020-07-20 11:34:07,649 INFO L78 Accepts]: Start accepts. Automaton has 2669 states and 3304 transitions. Word has length 217 [2020-07-20 11:34:07,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:34:07,649 INFO L479 AbstractCegarLoop]: Abstraction has 2669 states and 3304 transitions. [2020-07-20 11:34:07,649 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 11:34:07,649 INFO L276 IsEmpty]: Start isEmpty. Operand 2669 states and 3304 transitions. [2020-07-20 11:34:07,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-07-20 11:34:07,658 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 11:34:07,659 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-20 11:34:07,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:34:07,874 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 11:34:07,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 11:34:07,874 INFO L82 PathProgramCache]: Analyzing trace with hash -543444014, now seen corresponding path program 1 times [2020-07-20 11:34:07,875 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 11:34:07,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1189026888] [2020-07-20 11:34:07,876 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 11:34:07,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-20 11:34:08,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 507 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-20 11:34:08,014 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 11:34:08,069 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 84 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-07-20 11:34:08,070 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 11:34:08,070 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1189026888] [2020-07-20 11:34:08,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 11:34:08,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 11:34:08,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125087907] [2020-07-20 11:34:08,071 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 11:34:08,071 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 11:34:08,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 11:34:08,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 11:34:08,072 INFO L87 Difference]: Start difference. First operand 2669 states and 3304 transitions. Second operand 3 states. [2020-07-20 11:34:08,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 11:34:08,629 INFO L93 Difference]: Finished difference Result 6954 states and 8660 transitions. [2020-07-20 11:34:08,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 11:34:08,630 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 221 [2020-07-20 11:34:08,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 11:34:08,631 INFO L225 Difference]: With dead ends: 6954 [2020-07-20 11:34:08,631 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 11:34:08,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 220 GetRequests, 219 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 11:34:08,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 11:34:08,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 11:34:08,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 11:34:08,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 11:34:08,646 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 221 [2020-07-20 11:34:08,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 11:34:08,646 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 11:34:08,646 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 11:34:08,646 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 11:34:08,646 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 11:34:08,860 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 11:34:08,864 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 11:34:09,525 WARN L193 SmtUtils]: Spent 272.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 56 [2020-07-20 11:34:09,811 WARN L193 SmtUtils]: Spent 284.00 ms on a formula simplification. DAG size of input: 183 DAG size of output: 56 [2020-07-20 11:34:10,825 WARN L193 SmtUtils]: Spent 952.00 ms on a formula simplification. DAG size of input: 132 DAG size of output: 68 [2020-07-20 11:34:11,088 WARN L193 SmtUtils]: Spent 252.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-07-20 11:34:11,346 WARN L193 SmtUtils]: Spent 256.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 37 [2020-07-20 11:34:11,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:34:11,350 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 |old(~a16~0)|) (<= |old(~a16~0)| ~a16~0) (<= ~a7~0 |old(~a7~0)|)) [2020-07-20 11:34:11,350 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L333(lines 333 390) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L102(lines 102 390) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L565-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L532-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L499-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L466-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L433-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L400-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L268(lines 268 390) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L136(lines 136 390) no Hoare annotation was computed. [2020-07-20 11:34:11,351 INFO L268 CegarLoopResult]: For program point L566(line 566) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L533(line 533) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L500(line 500) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L467(line 467) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L434(line 434) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L401(line 401) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L203(lines 203 390) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L72(lines 72 390) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L568-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L535-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,352 INFO L268 CegarLoopResult]: For program point L502-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L469-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L436-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L403-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L337(lines 337 390) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L238(lines 238 390) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L569(line 569) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L536(line 536) no Hoare annotation was computed. [2020-07-20 11:34:11,353 INFO L268 CegarLoopResult]: For program point L503(line 503) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point L470(line 470) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point L437(line 437) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point L404(line 404) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point L173(lines 173 390) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point L140(lines 140 390) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point L372(lines 372 390) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION(line 560) no Hoare annotation was computed. [2020-07-20 11:34:11,354 INFO L268 CegarLoopResult]: For program point L306(lines 306 390) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L273(lines 273 390) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L108(lines 108 390) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L571-1(lines 571 573) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L538-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L505-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L472-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L439-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L406-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L208(lines 208 390) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L43(lines 43 390) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L572(line 572) no Hoare annotation was computed. [2020-07-20 11:34:11,355 INFO L268 CegarLoopResult]: For program point L539(line 539) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L506(line 506) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L473(line 473) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L440(line 440) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L407(line 407) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L144(lines 144 390) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L541-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L508-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L475-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L442-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,356 INFO L268 CegarLoopResult]: For program point L409-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L178(lines 178 390) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L542(line 542) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L509(line 509) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L476(line 476) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L443(line 443) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L410(line 410) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L377(lines 377 390) no Hoare annotation was computed. [2020-07-20 11:34:11,357 INFO L268 CegarLoopResult]: For program point L278(lines 278 390) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L245(lines 245 390) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L80(lines 80 390) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L345(lines 345 390) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L312(lines 312 390) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L114(lines 114 390) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L544-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L511-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L478-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,358 INFO L268 CegarLoopResult]: For program point L445-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L412-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L214(lines 214 390) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L148(lines 148 390) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L49(lines 49 390) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L545(line 545) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L512(line 512) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L479(line 479) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L446(line 446) no Hoare annotation was computed. [2020-07-20 11:34:11,359 INFO L268 CegarLoopResult]: For program point L413(line 413) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L84(lines 84 390) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point calculate_outputFINAL(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point calculate_outputEXIT(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L547-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L514-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L481-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L448-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L382(lines 382 390) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L415-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L316(lines 316 390) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L250(lines 250 390) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L548(line 548) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L515(line 515) no Hoare annotation was computed. [2020-07-20 11:34:11,360 INFO L268 CegarLoopResult]: For program point L482(line 482) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L449(line 449) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L416(line 416) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L218(lines 218 390) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L152(lines 152 390) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L119(lines 119 390) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L318(lines 318 390) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L186(lines 186 390) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L54(lines 54 390) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L550-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L517-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L484-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L451-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L418-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,361 INFO L268 CegarLoopResult]: For program point L286(lines 286 390) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L551(line 551) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L518(line 518) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L485(line 485) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L452(line 452) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L419(line 419) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L353(lines 353 390) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L189(lines 189 390) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L553-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,362 INFO L268 CegarLoopResult]: For program point L520-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L487-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L454-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L421-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L355(lines 355 390) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L256(lines 256 390) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L223(lines 223 390) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L124(lines 124 390) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L554(line 554) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L521(line 521) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L488(line 488) no Hoare annotation was computed. [2020-07-20 11:34:11,363 INFO L268 CegarLoopResult]: For program point L455(line 455) no Hoare annotation was computed. [2020-07-20 11:34:11,364 INFO L268 CegarLoopResult]: For program point L422(line 422) no Hoare annotation was computed. [2020-07-20 11:34:11,364 INFO L268 CegarLoopResult]: For program point L92(lines 92 390) no Hoare annotation was computed. [2020-07-20 11:34:11,364 INFO L264 CegarLoopResult]: At program point calculate_outputENTRY(lines 30 575) the Hoare annotation is: (let ((.cse6 (not (<= |old(~a17~0)| 0))) (.cse9 (not (<= |old(~a7~0)| 0))) (.cse4 (not (<= |old(~a16~0)| 5)))) (let ((.cse10 (let ((.cse12 (not (< |old(~a8~0)| 15)))) (and (or .cse9 .cse12 .cse6) (or .cse9 .cse4 .cse12)))) (.cse11 (not (<= 15 |old(~a8~0)|))) (.cse0 (<= ~a16~0 |old(~a16~0)|)) (.cse5 (not (<= |old(~a8~0)| 13))) (.cse1 (<= ~a8~0 |old(~a8~0)|)) (.cse2 (<= |old(~a16~0)| ~a16~0)) (.cse3 (<= ~a7~0 |old(~a7~0)|)) (.cse7 (not (= 1 |old(~a20~0)|))) (.cse8 (= 1 ~a20~0))) (and (or (and .cse0 .cse1 (<= ~a8~0 13) .cse2 .cse3 (<= ~a16~0 4)) (and .cse0 .cse1 .cse2 (<= ~a17~0 0) .cse3) (and (or .cse4 .cse5 (not (<= |old(~a16~0)| 4))) .cse6)) (or .cse7 (and .cse1 .cse0 .cse2 .cse8 .cse3) .cse9 .cse5) (or .cse7 .cse8 .cse10) (or (and .cse0 .cse1 .cse2 .cse3) .cse10) (or .cse7 .cse11 .cse8 (not (<= 5 |old(~a16~0)|))) (or .cse11 (and .cse1 .cse0 .cse2 (<= 15 ~a8~0) .cse3)) (or .cse7 .cse4 .cse5 (and .cse1 .cse2 (<= ~a16~0 5) .cse8 .cse3)) (or .cse7 .cse8 .cse6)))) [2020-07-20 11:34:11,364 INFO L268 CegarLoopResult]: For program point L324(lines 324 390) no Hoare annotation was computed. [2020-07-20 11:34:11,364 INFO L268 CegarLoopResult]: For program point L556-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,364 INFO L268 CegarLoopResult]: For program point L523-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,364 INFO L268 CegarLoopResult]: For program point L490-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L457-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L391(lines 391 393) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L424-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L391-2(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L292(lines 292 390) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L160(lines 160 390) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L557(line 557) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L524(line 524) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L491(line 491) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L458(line 458) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L425(line 425) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L392(line 392) no Hoare annotation was computed. [2020-07-20 11:34:11,365 INFO L268 CegarLoopResult]: For program point L194(lines 194 390) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L62(lines 62 390) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L261(lines 261 390) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L129(lines 129 390) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L559-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L526-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L493-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L460-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L427-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,366 INFO L268 CegarLoopResult]: For program point L361(lines 361 390) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L394-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L97(lines 97 390) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L31(lines 31 390) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L560(line 560) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L527(line 527) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L494(line 494) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L461(line 461) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L428(line 428) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L395(line 395) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L329(lines 329 390) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L197(lines 197 390) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L65(lines 65 390) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L363(lines 363 390) no Hoare annotation was computed. [2020-07-20 11:34:11,367 INFO L268 CegarLoopResult]: For program point L231(lines 231 390) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L165(lines 165 390) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L562-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L529-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L496-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L463-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L430-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L397-1(lines 30 575) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L265(lines 265 390) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L563(line 563) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L530(line 530) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L497(line 497) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L464(line 464) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L431(line 431) no Hoare annotation was computed. [2020-07-20 11:34:11,368 INFO L268 CegarLoopResult]: For program point L398(line 398) no Hoare annotation was computed. [2020-07-20 11:34:11,369 INFO L268 CegarLoopResult]: For program point L365(lines 365 390) no Hoare annotation was computed. [2020-07-20 11:34:11,369 INFO L268 CegarLoopResult]: For program point L299(lines 299 390) no Hoare annotation was computed. [2020-07-20 11:34:11,369 INFO L268 CegarLoopResult]: For program point L35(lines 35 390) no Hoare annotation was computed. [2020-07-20 11:34:11,369 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 11:34:11,369 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= ~a7~0 0) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0)) [2020-07-20 11:34:11,369 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 11:34:11,369 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 11:34:11,369 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 577 594) the Hoare annotation is: (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (not (<= |old(~a7~0)| 0)) (not (<= |old(~a16~0)| 5)) (and (<= ~a8~0 |old(~a8~0)|) (<= ~a16~0 5) (<= 15 ~a8~0) (<= 5 ~a16~0) (= 1 ~a20~0) (<= ~a7~0 |old(~a7~0)|)) (not (<= 5 |old(~a16~0)|))) [2020-07-20 11:34:11,369 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:34:11,370 INFO L264 CegarLoopResult]: At program point L591(line 591) the Hoare annotation is: (let ((.cse1 (<= ~a7~0 0)) (.cse0 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5)) (.cse3 (= 1 ~a20~0))) (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse0 (<= ~a16~0 4)) (<= ~a17~0 0) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse1 .cse2) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse1 .cse3) (and .cse0 .cse2 .cse3))) [2020-07-20 11:34:11,370 INFO L268 CegarLoopResult]: For program point L591-1(line 591) no Hoare annotation was computed. [2020-07-20 11:34:11,370 INFO L268 CegarLoopResult]: For program point L588(line 588) no Hoare annotation was computed. [2020-07-20 11:34:11,370 INFO L264 CegarLoopResult]: At program point L583-2(lines 583 593) the Hoare annotation is: (let ((.cse1 (<= ~a7~0 0)) (.cse0 (<= ~a8~0 13)) (.cse2 (<= ~a16~0 5)) (.cse3 (= 1 ~a20~0))) (or (not (= 1 |old(~a20~0)|)) (not (<= 15 |old(~a8~0)|)) (and .cse0 (<= ~a16~0 4)) (<= ~a17~0 0) (not (<= |old(~a7~0)| 0)) (<= 15 ~a8~0) (and .cse1 .cse2) (not (<= |old(~a16~0)| 5)) (not (<= 5 |old(~a16~0)|)) (and .cse0 .cse1 .cse3) (and .cse0 .cse2 .cse3))) [2020-07-20 11:34:11,370 INFO L268 CegarLoopResult]: For program point L583-3(lines 577 594) no Hoare annotation was computed. [2020-07-20 11:34:11,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 11:34:11 BoogieIcfgContainer [2020-07-20 11:34:11,389 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 11:34:11,391 INFO L168 Benchmark]: Toolchain (without parser) took 16567.46 ms. Allocated memory was 137.4 MB in the beginning and 451.9 MB in the end (delta: 314.6 MB). Free memory was 100.5 MB in the beginning and 152.5 MB in the end (delta: -52.0 MB). Peak memory consumption was 334.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:34:11,392 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-20 11:34:11,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 731.30 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 100.1 MB in the beginning and 169.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. [2020-07-20 11:34:11,394 INFO L168 Benchmark]: Boogie Preprocessor took 100.54 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 163.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. [2020-07-20 11:34:11,395 INFO L168 Benchmark]: RCFGBuilder took 1302.60 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 163.7 MB in the beginning and 178.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. [2020-07-20 11:34:11,396 INFO L168 Benchmark]: TraceAbstraction took 14423.65 ms. Allocated memory was 234.4 MB in the beginning and 451.9 MB in the end (delta: 217.6 MB). Free memory was 178.5 MB in the beginning and 152.5 MB in the end (delta: 26.0 MB). Peak memory consumption was 315.1 MB. Max. memory is 7.1 GB. [2020-07-20 11:34:11,400 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 731.30 ms. Allocated memory was 137.4 MB in the beginning and 203.4 MB in the end (delta: 66.1 MB). Free memory was 100.1 MB in the beginning and 169.4 MB in the end (delta: -69.3 MB). Peak memory consumption was 35.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 100.54 ms. Allocated memory is still 203.4 MB. Free memory was 169.4 MB in the beginning and 163.7 MB in the end (delta: 5.7 MB). Peak memory consumption was 5.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1302.60 ms. Allocated memory was 203.4 MB in the beginning and 234.4 MB in the end (delta: 30.9 MB). Free memory was 163.7 MB in the beginning and 178.5 MB in the end (delta: -14.8 MB). Peak memory consumption was 84.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 14423.65 ms. Allocated memory was 234.4 MB in the beginning and 451.9 MB in the end (delta: 217.6 MB). Free memory was 178.5 MB in the beginning and 152.5 MB in the end (delta: 26.0 MB). Peak memory consumption was 315.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 560]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 583]: Loop Invariant Derived loop invariant: (((((((((!(1 == \old(a20)) || !(15 <= \old(a8))) || (a8 <= 13 && a16 <= 4)) || a17 <= 0) || !(\old(a7) <= 0)) || 15 <= a8) || (a7 <= 0 && a16 <= 5)) || !(\old(a16) <= 5)) || !(5 <= \old(a16))) || ((a8 <= 13 && a7 <= 0) && 1 == a20)) || ((a8 <= 13 && a16 <= 5) && 1 == a20) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 207 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 11.8s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 450 SDtfs, 1906 SDslu, 265 SDs, 0 SdLazy, 5416 SolverSat, 862 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1781 GetRequests, 1746 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=2784occurred in iteration=5, 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, 8 MinimizatonAttempts, 2043 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 114 PreInvPairs, 176 NumberOfFragments, 430 HoareAnnotationTreeSize, 114 FomulaSimplifications, 21297 FormulaSimplificationTreeSizeReduction, 0.9s HoareSimplificationTime, 7 FomulaSimplificationsInter, 3395 FormulaSimplificationTreeSizeReductionInter, 1.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 1379 NumberOfCodeBlocks, 1379 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 1759 ConstructedInterpolants, 0 QuantifiedInterpolants, 666907 SizeOfPredicates, 11 NumberOfNonLiveVariables, 3472 ConjunctsInSsa, 41 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 452/460 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...