/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/cggmp2005.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:01:22,046 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:01:22,049 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:01:22,069 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:01:22,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:01:22,071 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:01:22,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:01:22,086 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:01:22,088 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:01:22,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:01:22,092 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:01:22,094 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:01:22,094 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:01:22,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:01:22,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:01:22,100 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:01:22,103 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:01:22,105 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:01:22,108 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:01:22,111 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:01:22,115 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:01:22,116 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:01:22,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:01:22,118 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:01:22,123 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 14:01:22,141 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:01:22,142 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:01:22,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:01:22,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:01:22,160 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:01:22,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:01:22,163 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:01:22,163 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:01:22,163 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:01:22,164 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:01:22,164 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:01:22,164 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:01:22,164 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:01:22,164 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:01:22,165 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:01:22,166 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:01:22,166 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:01:22,166 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:01:22,166 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:01:22,167 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:01:22,167 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:01:22,167 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:01:22,167 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:01:22,167 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:01:22,168 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:01:22,168 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:01:22,168 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:01:22,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:01:22,457 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:01:22,460 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:01:22,461 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:01:22,462 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:01:22,462 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-07 14:01:22,526 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a640b918/89309d35c14f46fb990848211b43ef83/FLAG2b9084ec0 [2020-07-07 14:01:22,979 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:01:22,980 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/cggmp2005.i [2020-07-07 14:01:22,987 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a640b918/89309d35c14f46fb990848211b43ef83/FLAG2b9084ec0 [2020-07-07 14:01:23,383 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1a640b918/89309d35c14f46fb990848211b43ef83 [2020-07-07 14:01:23,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:01:23,393 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:01:23,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:23,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:01:23,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:01:23,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32524559 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23, skipping insertion in model container [2020-07-07 14:01:23,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:01:23,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:01:23,652 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:23,661 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:01:23,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:23,696 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:01:23,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23 WrapperNode [2020-07-07 14:01:23,697 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:23,697 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:01:23,697 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:01:23,698 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:01:23,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,711 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,716 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,717 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,720 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,725 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (1/1) ... [2020-07-07 14:01:23,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:01:23,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:01:23,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:01:23,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:01:23,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (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 [2020-07-07 14:01:23,875 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:01:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:01:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 14:01:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 14:01:23,876 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:01:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:01:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 14:01:23,876 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 14:01:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:01:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:01:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:01:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:01:23,877 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:01:24,051 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:01:24,052 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 14:01:24,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:24 BoogieIcfgContainer [2020-07-07 14:01:24,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:01:24,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:01:24,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:01:24,060 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:01:24,060 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:01:23" (1/3) ... [2020-07-07 14:01:24,061 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548e4f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:24, skipping insertion in model container [2020-07-07 14:01:24,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:23" (2/3) ... [2020-07-07 14:01:24,062 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@548e4f82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:24, skipping insertion in model container [2020-07-07 14:01:24,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:24" (3/3) ... [2020-07-07 14:01:24,064 INFO L109 eAbstractionObserver]: Analyzing ICFG cggmp2005.i [2020-07-07 14:01:24,073 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:01:24,079 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:01:24,092 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:01:24,116 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:01:24,116 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:01:24,116 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:01:24,116 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:01:24,116 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:01:24,117 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:01:24,117 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:01:24,117 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:01:24,132 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-07-07 14:01:24,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-07 14:01:24,141 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:24,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:24,143 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:24,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:24,151 INFO L82 PathProgramCache]: Analyzing trace with hash -714485069, now seen corresponding path program 1 times [2020-07-07 14:01:24,160 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:24,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [60192727] [2020-07-07 14:01:24,161 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:24,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:24,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:24,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:24,419 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:24,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [60192727] [2020-07-07 14:01:24,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:24,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-07 14:01:24,426 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210690946] [2020-07-07 14:01:24,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-07 14:01:24,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:24,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-07 14:01:24,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-07 14:01:24,452 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 4 states. [2020-07-07 14:01:24,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:24,526 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-07-07 14:01:24,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-07 14:01:24,528 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-07 14:01:24,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:24,538 INFO L225 Difference]: With dead ends: 37 [2020-07-07 14:01:24,538 INFO L226 Difference]: Without dead ends: 18 [2020-07-07 14:01:24,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-07 14:01:24,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-07-07 14:01:24,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 17. [2020-07-07 14:01:24,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-07-07 14:01:24,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-07-07 14:01:24,592 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 13 [2020-07-07 14:01:24,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:24,593 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-07-07 14:01:24,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-07 14:01:24,594 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-07-07 14:01:24,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 14:01:24,595 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:24,595 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:24,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:01:24,596 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:24,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:24,596 INFO L82 PathProgramCache]: Analyzing trace with hash 673132007, now seen corresponding path program 1 times [2020-07-07 14:01:24,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:24,597 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1132039322] [2020-07-07 14:01:24,597 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 [2020-07-07 14:01:26,844 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 39 DAG size of output: 28 [2020-07-07 14:01:26,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:27,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:27,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:27,255 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:27,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1132039322] [2020-07-07 14:01:27,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:27,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:01:27,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888709256] [2020-07-07 14:01:27,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:01:27,258 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:27,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:01:27,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:01:27,259 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 9 states. [2020-07-07 14:01:27,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:27,380 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-07 14:01:27,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 14:01:27,381 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-07-07 14:01:27,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:27,382 INFO L225 Difference]: With dead ends: 26 [2020-07-07 14:01:27,382 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 14:01:27,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-07-07 14:01:27,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 14:01:27,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-07-07 14:01:27,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-07 14:01:27,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-07-07 14:01:27,392 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 16 [2020-07-07 14:01:27,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:27,392 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-07-07 14:01:27,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:01:27,393 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-07-07 14:01:27,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 14:01:27,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:27,394 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:27,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:01:27,394 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:27,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:27,395 INFO L82 PathProgramCache]: Analyzing trace with hash 113219123, now seen corresponding path program 2 times [2020-07-07 14:01:27,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:27,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1437909955] [2020-07-07 14:01:27,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 [2020-07-07 14:01:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:29,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:29,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:29,804 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:29,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1437909955] [2020-07-07 14:01:29,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:29,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 14:01:29,806 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967171261] [2020-07-07 14:01:29,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 14:01:29,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:29,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 14:01:29,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:01:29,808 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 11 states. [2020-07-07 14:01:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:29,941 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-07-07 14:01:29,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 14:01:29,942 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 19 [2020-07-07 14:01:29,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:29,943 INFO L225 Difference]: With dead ends: 29 [2020-07-07 14:01:29,943 INFO L226 Difference]: Without dead ends: 24 [2020-07-07 14:01:29,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 3 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:01:29,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-07 14:01:29,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-07-07 14:01:29,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 14:01:29,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-07-07 14:01:29,956 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2020-07-07 14:01:29,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:29,956 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-07-07 14:01:29,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 14:01:29,957 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-07-07 14:01:29,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-07 14:01:29,960 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:29,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:29,961 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:01:29,961 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:29,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:29,961 INFO L82 PathProgramCache]: Analyzing trace with hash 1401469543, now seen corresponding path program 3 times [2020-07-07 14:01:29,962 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:29,962 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90608560] [2020-07-07 14:01:29,962 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 [2020-07-07 14:01:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:32,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:32,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:32,430 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:32,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90608560] [2020-07-07 14:01:32,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:32,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2020-07-07 14:01:32,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1502392937] [2020-07-07 14:01:32,432 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-07 14:01:32,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:32,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-07 14:01:32,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-07-07 14:01:32,433 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 13 states. [2020-07-07 14:01:32,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:32,548 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-07-07 14:01:32,548 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 14:01:32,549 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 22 [2020-07-07 14:01:32,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:32,550 INFO L225 Difference]: With dead ends: 32 [2020-07-07 14:01:32,550 INFO L226 Difference]: Without dead ends: 27 [2020-07-07 14:01:32,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-07-07 14:01:32,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-07 14:01:32,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-07-07 14:01:32,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-07-07 14:01:32,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-07-07 14:01:32,558 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 22 [2020-07-07 14:01:32,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:32,559 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-07-07 14:01:32,559 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-07 14:01:32,559 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-07-07 14:01:32,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 14:01:32,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:32,561 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:32,561 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:01:32,561 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:32,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:32,562 INFO L82 PathProgramCache]: Analyzing trace with hash -158025293, now seen corresponding path program 4 times [2020-07-07 14:01:32,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:32,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [663510582] [2020-07-07 14:01:32,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 [2020-07-07 14:01:33,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:33,157 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:33,397 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:33,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [663510582] [2020-07-07 14:01:33,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:33,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 14:01:33,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052622739] [2020-07-07 14:01:33,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 14:01:33,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:33,399 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 14:01:33,400 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2020-07-07 14:01:33,400 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 15 states. [2020-07-07 14:01:33,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:33,542 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-07-07 14:01:33,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-07 14:01:33,542 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 25 [2020-07-07 14:01:33,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:33,543 INFO L225 Difference]: With dead ends: 26 [2020-07-07 14:01:33,543 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 14:01:33,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 4 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=70, Invalid=272, Unknown=0, NotChecked=0, Total=342 [2020-07-07 14:01:33,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 14:01:33,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 14:01:33,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 14:01:33,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 14:01:33,545 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-07-07 14:01:33,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:33,545 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 14:01:33,545 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 14:01:33,545 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 14:01:33,545 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 14:01:33,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:01:33,547 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 14:01:33,745 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:33,745 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:33,745 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:33,746 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 14:01:33,746 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 14:01:33,746 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:33,746 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:33,746 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:33,746 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-07 14:01:33,746 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-07 14:01:33,746 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:33,747 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 23) the Hoare annotation is: true [2020-07-07 14:01:33,747 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 23) the Hoare annotation is: true [2020-07-07 14:01:33,747 INFO L271 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: true [2020-07-07 14:01:33,747 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~j~0)))) (and (<= 23 .cse0) (<= .cse0 23) (<= main_~i~0 (+ main_~j~0 2)))) [2020-07-07 14:01:33,747 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~j~0)))) (and (<= .cse0 21) (<= 21 .cse0) (<= main_~i~0 main_~j~0))) [2020-07-07 14:01:33,747 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= main_~i~0 1) (<= 1 main_~i~0)) [2020-07-07 14:01:33,748 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-07 14:01:33,748 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 20) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~j~0)))) (and (<= .cse0 21) (<= 21 .cse0) (<= main_~i~0 (+ main_~j~0 3)))) [2020-07-07 14:01:33,748 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-07 14:01:33,749 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 20) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 (* 2 main_~j~0)))) (and (<= .cse0 21) (<= 21 .cse0) (<= main_~i~0 (+ main_~j~0 3)) (< main_~j~0 main_~i~0))) [2020-07-07 14:01:33,749 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 23) the Hoare annotation is: true [2020-07-07 14:01:33,749 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:33,749 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:33,749 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:33,749 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-07 14:01:33,751 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:33,751 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:33,768 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 02:01:33 BoogieIcfgContainer [2020-07-07 14:01:33,768 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 14:01:33,770 INFO L168 Benchmark]: Toolchain (without parser) took 10377.04 ms. Allocated memory was 138.4 MB in the beginning and 243.8 MB in the end (delta: 105.4 MB). Free memory was 102.5 MB in the beginning and 122.3 MB in the end (delta: -19.8 MB). Peak memory consumption was 85.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:33,771 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 14:01:33,772 INFO L168 Benchmark]: CACSL2BoogieTranslator took 302.41 ms. Allocated memory is still 138.4 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:33,773 INFO L168 Benchmark]: Boogie Preprocessor took 114.21 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.9 MB in the beginning and 183.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:33,774 INFO L168 Benchmark]: RCFGBuilder took 243.41 ms. Allocated memory is still 202.9 MB. Free memory was 183.0 MB in the beginning and 170.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:33,775 INFO L168 Benchmark]: TraceAbstraction took 9711.68 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 169.4 MB in the beginning and 122.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:33,780 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 302.41 ms. Allocated memory is still 138.4 MB. Free memory was 102.3 MB in the beginning and 92.9 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.21 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 92.9 MB in the beginning and 183.0 MB in the end (delta: -90.1 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 243.41 ms. Allocated memory is still 202.9 MB. Free memory was 183.0 MB in the beginning and 170.1 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9711.68 ms. Allocated memory was 202.9 MB in the beginning and 243.8 MB in the end (delta: 40.9 MB). Free memory was 169.4 MB in the beginning and 122.3 MB in the end (delta: 47.1 MB). Peak memory consumption was 88.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 17]: Loop Invariant Derived loop invariant: (i + 2 * j <= 21 && 21 <= i + 2 * j) && i <= j + 3 - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.4s, OverallIterations: 5, TraceHistogramMax: 4, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 24 SDslu, 327 SDs, 0 SdLazy, 306 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 94 GetRequests, 30 SyntacticMatches, 12 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 23 LocationsWithAnnotation, 47 PreInvPairs, 71 NumberOfFragments, 117 HoareAnnotationTreeSize, 47 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 23 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...