/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/gsv2008.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:56:00,382 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:56:00,384 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:56:00,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:56:00,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:56:00,406 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:56:00,408 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:56:00,417 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:56:00,421 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:56:00,423 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:56:00,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:56:00,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:56:00,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:56:00,429 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:56:00,431 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:56:00,433 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:56:00,434 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:56:00,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:56:00,436 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:56:00,440 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:56:00,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:56:00,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:56:00,449 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:56:00,450 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:56:00,452 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:56:00,465 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:56:00,466 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:56:00,467 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:56:00,468 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:56:00,491 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:56:00,491 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:56:00,493 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:56:00,493 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:56:00,493 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:56:00,494 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:56:00,494 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:56:00,494 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:56:00,494 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:56:00,494 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:56:00,495 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:56:00,495 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:56:00,495 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:56:00,495 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:56:00,495 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:56:00,496 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:56:00,496 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:56:00,496 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:56:00,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:56:00,496 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:56:00,497 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:56:00,497 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:56:00,497 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:56:00,819 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:56:00,835 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:56:00,838 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:56:00,840 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:56:00,841 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:56:00,841 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2020-07-17 14:56:00,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314834d60/1d252a5a712340c5b858c08d574e477d/FLAGb63f69d2f [2020-07-17 14:56:01,323 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:56:01,323 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2020-07-17 14:56:01,330 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314834d60/1d252a5a712340c5b858c08d574e477d/FLAGb63f69d2f [2020-07-17 14:56:01,720 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/314834d60/1d252a5a712340c5b858c08d574e477d [2020-07-17 14:56:01,731 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:56:01,734 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:56:01,735 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:01,735 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:56:01,739 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:56:01,740 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@16f22586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01, skipping insertion in model container [2020-07-17 14:56:01,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,750 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:56:01,768 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:56:01,920 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:01,924 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:56:01,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:56:01,956 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:56:01,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01 WrapperNode [2020-07-17 14:56:01,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:56:01,958 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:56:01,958 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:56:01,958 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:56:01,972 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,972 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,977 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,981 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,986 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (1/1) ... [2020-07-17 14:56:01,988 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:56:01,988 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:56:01,989 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:56:01,989 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:56:01,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (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 [2020-07-17 14:56:02,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:56:02,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:56:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:56:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:56:02,157 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:56:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:56:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:56:02,157 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:56:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:56:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:56:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:56:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:56:02,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:56:02,375 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:56:02,377 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 14:56:02,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:02 BoogieIcfgContainer [2020-07-17 14:56:02,382 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:56:02,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:56:02,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:56:02,405 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:56:02,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:56:01" (1/3) ... [2020-07-17 14:56:02,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1701d31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:02, skipping insertion in model container [2020-07-17 14:56:02,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:56:01" (2/3) ... [2020-07-17 14:56:02,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1701d31a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:56:02, skipping insertion in model container [2020-07-17 14:56:02,407 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:56:02" (3/3) ... [2020-07-17 14:56:02,412 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-07-17 14:56:02,436 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:56:02,450 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:56:02,464 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:56:02,484 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:56:02,484 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:56:02,484 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:56:02,484 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:56:02,484 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:56:02,484 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:56:02,485 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:56:02,485 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:56:02,498 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-17 14:56:02,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 14:56:02,507 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:02,508 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:02,508 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:02,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:02,513 INFO L82 PathProgramCache]: Analyzing trace with hash 2104509233, now seen corresponding path program 1 times [2020-07-17 14:56:02,519 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:02,520 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413514033] [2020-07-17 14:56:02,520 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:02,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:02,643 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:02,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413514033] [2020-07-17 14:56:02,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:02,647 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 14:56:02,647 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459794718] [2020-07-17 14:56:02,651 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 14:56:02,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:02,662 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 14:56:02,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:56:02,665 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-07-17 14:56:02,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:02,688 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-07-17 14:56:02,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 14:56:02,689 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-17 14:56:02,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:02,696 INFO L225 Difference]: With dead ends: 41 [2020-07-17 14:56:02,697 INFO L226 Difference]: Without dead ends: 21 [2020-07-17 14:56:02,700 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 14:56:02,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-17 14:56:02,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-17 14:56:02,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-17 14:56:02,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-17 14:56:02,734 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2020-07-17 14:56:02,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:02,734 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-17 14:56:02,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 14:56:02,735 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-17 14:56:02,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 14:56:02,736 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:02,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:02,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:56:02,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:02,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:02,737 INFO L82 PathProgramCache]: Analyzing trace with hash 2097121065, now seen corresponding path program 1 times [2020-07-17 14:56:02,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:02,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523714679] [2020-07-17 14:56:02,738 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:02,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:02,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:02,799 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:02,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523714679] [2020-07-17 14:56:02,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:02,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 14:56:02,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043622039] [2020-07-17 14:56:02,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 14:56:02,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:02,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 14:56:02,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:56:02,803 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2020-07-17 14:56:02,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:02,833 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-17 14:56:02,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 14:56:02,834 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-17 14:56:02,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:02,835 INFO L225 Difference]: With dead ends: 28 [2020-07-17 14:56:02,836 INFO L226 Difference]: Without dead ends: 23 [2020-07-17 14:56:02,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 14:56:02,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-17 14:56:02,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-17 14:56:02,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-17 14:56:02,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-07-17 14:56:02,845 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-07-17 14:56:02,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:02,846 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-07-17 14:56:02,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 14:56:02,846 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-07-17 14:56:02,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-17 14:56:02,847 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:02,847 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] [2020-07-17 14:56:02,847 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:56:02,848 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:02,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:02,848 INFO L82 PathProgramCache]: Analyzing trace with hash -588245929, now seen corresponding path program 1 times [2020-07-17 14:56:02,848 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:02,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1299553127] [2020-07-17 14:56:02,849 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:02,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:03,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:03,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:03,021 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:03,021 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1299553127] [2020-07-17 14:56:03,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:03,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 14:56:03,022 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308974564] [2020-07-17 14:56:03,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 14:56:03,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:03,023 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 14:56:03,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 14:56:03,024 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2020-07-17 14:56:03,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:03,207 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-07-17 14:56:03,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 14:56:03,208 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-07-17 14:56:03,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:03,209 INFO L225 Difference]: With dead ends: 33 [2020-07-17 14:56:03,209 INFO L226 Difference]: Without dead ends: 28 [2020-07-17 14:56:03,210 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-07-17 14:56:03,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-17 14:56:03,216 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-17 14:56:03,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-17 14:56:03,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-17 14:56:03,218 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-07-17 14:56:03,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:03,218 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-17 14:56:03,218 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 14:56:03,218 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-17 14:56:03,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 14:56:03,219 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:03,220 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] [2020-07-17 14:56:03,220 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:56:03,220 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:03,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:03,221 INFO L82 PathProgramCache]: Analyzing trace with hash -590441495, now seen corresponding path program 2 times [2020-07-17 14:56:03,221 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:03,221 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066134446] [2020-07-17 14:56:03,221 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:03,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:03,413 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:03,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066134446] [2020-07-17 14:56:03,414 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:03,414 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 14:56:03,415 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158457397] [2020-07-17 14:56:03,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 14:56:03,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:03,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 14:56:03,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-17 14:56:03,416 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 12 states. [2020-07-17 14:56:03,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:03,629 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-07-17 14:56:03,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 14:56:03,630 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-07-17 14:56:03,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:03,631 INFO L225 Difference]: With dead ends: 38 [2020-07-17 14:56:03,631 INFO L226 Difference]: Without dead ends: 33 [2020-07-17 14:56:03,632 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-07-17 14:56:03,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-17 14:56:03,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-17 14:56:03,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 14:56:03,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-17 14:56:03,640 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-07-17 14:56:03,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:03,641 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-17 14:56:03,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 14:56:03,641 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-17 14:56:03,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 14:56:03,642 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:03,642 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:03,643 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 14:56:03,643 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:03,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:03,643 INFO L82 PathProgramCache]: Analyzing trace with hash -934609001, now seen corresponding path program 3 times [2020-07-17 14:56:03,644 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:03,644 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [24366101] [2020-07-17 14:56:03,644 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:03,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:03,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:03,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:03,845 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:03,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [24366101] [2020-07-17 14:56:03,845 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:03,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 14:56:03,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881331052] [2020-07-17 14:56:03,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 14:56:03,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:03,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 14:56:03,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-17 14:56:03,847 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 15 states. [2020-07-17 14:56:04,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:04,125 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-07-17 14:56:04,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 14:56:04,126 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-07-17 14:56:04,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:04,127 INFO L225 Difference]: With dead ends: 43 [2020-07-17 14:56:04,127 INFO L226 Difference]: Without dead ends: 38 [2020-07-17 14:56:04,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-07-17 14:56:04,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-17 14:56:04,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-07-17 14:56:04,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-17 14:56:04,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-07-17 14:56:04,136 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-07-17 14:56:04,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:04,137 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-07-17 14:56:04,137 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 14:56:04,137 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-07-17 14:56:04,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-17 14:56:04,138 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:04,139 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:04,139 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 14:56:04,139 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:04,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:04,140 INFO L82 PathProgramCache]: Analyzing trace with hash 1774497961, now seen corresponding path program 4 times [2020-07-17 14:56:04,140 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:04,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1973038688] [2020-07-17 14:56:04,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:04,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:04,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:04,422 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:04,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1973038688] [2020-07-17 14:56:04,423 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:04,423 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-17 14:56:04,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778418016] [2020-07-17 14:56:04,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 14:56:04,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:04,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 14:56:04,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-07-17 14:56:04,428 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 18 states. [2020-07-17 14:56:04,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:04,801 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-07-17 14:56:04,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-17 14:56:04,802 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-07-17 14:56:04,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:04,803 INFO L225 Difference]: With dead ends: 48 [2020-07-17 14:56:04,804 INFO L226 Difference]: Without dead ends: 43 [2020-07-17 14:56:04,804 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-07-17 14:56:04,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-17 14:56:04,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-17 14:56:04,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-17 14:56:04,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-07-17 14:56:04,815 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-07-17 14:56:04,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:04,820 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-07-17 14:56:04,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 14:56:04,821 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-17 14:56:04,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 14:56:04,822 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:04,822 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:04,822 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 14:56:04,823 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:04,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:04,823 INFO L82 PathProgramCache]: Analyzing trace with hash -194454825, now seen corresponding path program 5 times [2020-07-17 14:56:04,823 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:04,824 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [792628206] [2020-07-17 14:56:04,824 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:04,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:05,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:05,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:05,115 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:05,115 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [792628206] [2020-07-17 14:56:05,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:05,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-17 14:56:05,116 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080350935] [2020-07-17 14:56:05,116 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-17 14:56:05,117 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:05,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-17 14:56:05,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-07-17 14:56:05,118 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 21 states. [2020-07-17 14:56:05,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:05,597 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-07-17 14:56:05,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-17 14:56:05,598 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-07-17 14:56:05,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:05,599 INFO L225 Difference]: With dead ends: 53 [2020-07-17 14:56:05,599 INFO L226 Difference]: Without dead ends: 48 [2020-07-17 14:56:05,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 14:56:05,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-17 14:56:05,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-17 14:56:05,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-17 14:56:05,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-17 14:56:05,615 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-07-17 14:56:05,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:05,615 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-17 14:56:05,615 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-17 14:56:05,615 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-17 14:56:05,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-17 14:56:05,618 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:05,618 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:05,619 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 14:56:05,619 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:05,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:05,619 INFO L82 PathProgramCache]: Analyzing trace with hash 1783487849, now seen corresponding path program 6 times [2020-07-17 14:56:05,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:05,621 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1360441764] [2020-07-17 14:56:05,621 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:05,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:05,999 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:06,001 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1360441764] [2020-07-17 14:56:06,001 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:06,002 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-17 14:56:06,002 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157325147] [2020-07-17 14:56:06,003 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-17 14:56:06,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:06,004 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-17 14:56:06,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-07-17 14:56:06,005 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2020-07-17 14:56:06,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:06,626 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-07-17 14:56:06,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-17 14:56:06,627 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2020-07-17 14:56:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:06,628 INFO L225 Difference]: With dead ends: 58 [2020-07-17 14:56:06,629 INFO L226 Difference]: Without dead ends: 53 [2020-07-17 14:56:06,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2020-07-17 14:56:06,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-17 14:56:06,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-07-17 14:56:06,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-17 14:56:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-07-17 14:56:06,639 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-07-17 14:56:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:06,639 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-07-17 14:56:06,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-17 14:56:06,639 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-07-17 14:56:06,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-17 14:56:06,640 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:06,641 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:06,641 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 14:56:06,641 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:06,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:06,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1046324759, now seen corresponding path program 7 times [2020-07-17 14:56:06,642 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:06,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63243683] [2020-07-17 14:56:06,642 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:06,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:07,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:07,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:07,047 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:07,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63243683] [2020-07-17 14:56:07,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:07,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-17 14:56:07,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027893168] [2020-07-17 14:56:07,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-17 14:56:07,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:07,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-17 14:56:07,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-07-17 14:56:07,050 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2020-07-17 14:56:07,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:07,794 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-17 14:56:07,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-17 14:56:07,796 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-07-17 14:56:07,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:07,798 INFO L225 Difference]: With dead ends: 63 [2020-07-17 14:56:07,798 INFO L226 Difference]: Without dead ends: 58 [2020-07-17 14:56:07,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=147, Invalid=1833, Unknown=0, NotChecked=0, Total=1980 [2020-07-17 14:56:07,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-17 14:56:07,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-17 14:56:07,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-17 14:56:07,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-07-17 14:56:07,806 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-07-17 14:56:07,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:07,807 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-07-17 14:56:07,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-17 14:56:07,807 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-07-17 14:56:07,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-17 14:56:07,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:07,808 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:07,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 14:56:07,809 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:07,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:07,809 INFO L82 PathProgramCache]: Analyzing trace with hash 232135209, now seen corresponding path program 8 times [2020-07-17 14:56:07,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:07,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000329356] [2020-07-17 14:56:07,810 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:07,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:08,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:08,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:08,360 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:08,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000329356] [2020-07-17 14:56:08,361 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:08,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-07-17 14:56:08,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827301212] [2020-07-17 14:56:08,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-17 14:56:08,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:08,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-17 14:56:08,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-07-17 14:56:08,363 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 30 states. [2020-07-17 14:56:09,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:09,299 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-17 14:56:09,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-17 14:56:09,301 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-07-17 14:56:09,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:09,302 INFO L225 Difference]: With dead ends: 68 [2020-07-17 14:56:09,302 INFO L226 Difference]: Without dead ends: 63 [2020-07-17 14:56:09,304 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=2380, Unknown=0, NotChecked=0, Total=2550 [2020-07-17 14:56:09,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-17 14:56:09,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-07-17 14:56:09,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-17 14:56:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-07-17 14:56:09,321 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-07-17 14:56:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:09,321 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-07-17 14:56:09,322 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-17 14:56:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-07-17 14:56:09,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 14:56:09,323 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:09,323 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:09,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 14:56:09,325 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:09,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:09,325 INFO L82 PathProgramCache]: Analyzing trace with hash 977101143, now seen corresponding path program 9 times [2020-07-17 14:56:09,325 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:09,326 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300276896] [2020-07-17 14:56:09,326 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:09,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:09,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:09,987 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:09,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300276896] [2020-07-17 14:56:09,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:09,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-17 14:56:09,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924577492] [2020-07-17 14:56:09,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-17 14:56:09,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:09,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-17 14:56:09,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=984, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 14:56:09,989 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 33 states. [2020-07-17 14:56:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:11,171 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-07-17 14:56:11,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-17 14:56:11,172 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-07-17 14:56:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:11,173 INFO L225 Difference]: With dead ends: 73 [2020-07-17 14:56:11,173 INFO L226 Difference]: Without dead ends: 68 [2020-07-17 14:56:11,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=2998, Unknown=0, NotChecked=0, Total=3192 [2020-07-17 14:56:11,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-17 14:56:11,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-17 14:56:11,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-17 14:56:11,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-07-17 14:56:11,182 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 61 [2020-07-17 14:56:11,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:11,182 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-07-17 14:56:11,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-17 14:56:11,182 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-07-17 14:56:11,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-17 14:56:11,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:56:11,184 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:56:11,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 14:56:11,184 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:56:11,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:56:11,184 INFO L82 PathProgramCache]: Analyzing trace with hash 751396585, now seen corresponding path program 10 times [2020-07-17 14:56:11,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:56:11,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1337929444] [2020-07-17 14:56:11,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:56:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:56:11,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:56:11,867 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:56:11,868 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1337929444] [2020-07-17 14:56:11,868 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:56:11,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-07-17 14:56:11,868 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214100936] [2020-07-17 14:56:11,869 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-17 14:56:11,869 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:56:11,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-17 14:56:11,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1181, Unknown=0, NotChecked=0, Total=1260 [2020-07-17 14:56:11,870 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 36 states. [2020-07-17 14:56:13,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:56:13,210 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-17 14:56:13,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-17 14:56:13,210 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2020-07-17 14:56:13,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:56:13,211 INFO L225 Difference]: With dead ends: 68 [2020-07-17 14:56:13,211 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 14:56:13,213 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=221, Invalid=3685, Unknown=0, NotChecked=0, Total=3906 [2020-07-17 14:56:13,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 14:56:13,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 14:56:13,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 14:56:13,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 14:56:13,214 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-07-17 14:56:13,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:56:13,214 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 14:56:13,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-17 14:56:13,214 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 14:56:13,214 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 14:56:13,214 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 14:56:13,216 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 14:56:13,702 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:56:13,702 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:56:13,703 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:56:13,703 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 14:56:13,703 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 14:56:13,703 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:56:13,703 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:56:13,703 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:56:13,704 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 14:56:13,704 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-17 14:56:13,704 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:56:13,704 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 24) the Hoare annotation is: true [2020-07-17 14:56:13,705 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse1 (* 6 main_~y~0))) (let ((.cse0 (<= (+ main_~x~0 65) .cse1))) (or (and (<= (+ main_~x~0 78) (* 7 main_~y~0)) .cse0) (<= (+ main_~x~0 71) .cse1) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 60) (* 4 main_~y~0)) (and (<= (+ main_~x~0 95) (* 9 main_~y~0)) .cse0) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (<= (+ main_~x~0 51) main_~y~0)))) [2020-07-17 14:56:13,705 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-17 14:56:13,706 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-17 14:56:13,707 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-17 14:56:13,707 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 24) the Hoare annotation is: true [2020-07-17 14:56:13,707 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: true [2020-07-17 14:56:13,707 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-17 14:56:13,707 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (or (<= (+ main_~x~0 50) main_~y~0) (<= (+ main_~x~0 78) (* 8 main_~y~0)) (<= (+ main_~x~0 56) (* 4 main_~y~0)) (<= (+ main_~x~0 51) (* 2 main_~y~0)) (<= (+ main_~x~0 65) (* 6 main_~y~0)) (<= (+ main_~x~0 95) (* 10 main_~y~0))) [2020-07-17 14:56:13,708 INFO L264 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: (or (let ((.cse0 (+ main_~x~0 50))) (and (<= .cse0 main_~y~0) (<= .cse0 |main_#t~post1|))) (let ((.cse1 (+ main_~x~0 95))) (and (<= .cse1 (* 10 |main_#t~post1|)) (<= .cse1 (* 10 main_~y~0)))) (let ((.cse2 (+ main_~x~0 60))) (and (<= .cse2 (* 5 main_~y~0)) (<= .cse2 (* 5 |main_#t~post1|)))) (let ((.cse3 (+ main_~x~0 53))) (and (<= .cse3 (* 3 main_~y~0)) (<= .cse3 (* 3 |main_#t~post1|)))) (let ((.cse4 (+ main_~x~0 78))) (and (<= .cse4 (* 8 |main_#t~post1|)) (<= .cse4 (* 8 main_~y~0)))) (let ((.cse5 (+ main_~x~0 71))) (and (<= .cse5 (* 7 main_~y~0)) (<= .cse5 (* 7 |main_#t~post1|))))) [2020-07-17 14:56:13,708 INFO L264 CegarLoopResult]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (+ main_~x~0 51))) (or (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 95) (* 10 |main_#t~post1|))) (and (<= (+ main_~x~0 50) |main_#t~post1|) (<= .cse0 main_~y~0)) (and (<= (+ main_~x~0 60) (* 4 main_~y~0)) (<= (+ main_~x~0 56) (* 4 |main_#t~post1|))) (and (<= (+ main_~x~0 53) (* 2 main_~y~0)) (<= .cse0 (* 2 |main_#t~post1|))) (and (<= (+ main_~x~0 71) (* 6 main_~y~0)) (<= (+ main_~x~0 65) (* 6 |main_#t~post1|))) (and (<= (+ main_~x~0 78) (* 8 |main_#t~post1|)) (<= (+ main_~x~0 86) (* 8 main_~y~0))))) [2020-07-17 14:56:13,708 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-17 14:56:13,709 INFO L264 CegarLoopResult]: At program point L18-2(lines 18 21) the Hoare annotation is: (or (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= (+ main_~x~0 78) (* 7 main_~y~0)) (<= (+ main_~x~0 50) 0) (<= (+ main_~x~0 65) (* 5 main_~y~0)) (<= (+ main_~x~0 86) (* 8 main_~y~0)) (<= (+ main_~x~0 56) (* 3 main_~y~0)) (<= (+ main_~x~0 51) main_~y~0)) [2020-07-17 14:56:13,709 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-17 14:56:13,709 INFO L264 CegarLoopResult]: At program point L18-3(lines 18 21) the Hoare annotation is: (and (<= (+ main_~x~0 105) (* 10 main_~y~0)) (<= 11 main_~y~0)) [2020-07-17 14:56:13,709 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 14:56:13,709 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-17 14:56:13,710 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 14:56:13,710 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-07-17 14:56:13,710 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:56:13,710 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))) [2020-07-17 14:56:13,710 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-07-17 14:56:13,710 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:56:13,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:56:13 BoogieIcfgContainer [2020-07-17 14:56:13,742 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:56:13,747 INFO L168 Benchmark]: Toolchain (without parser) took 12011.66 ms. Allocated memory was 137.9 MB in the beginning and 321.9 MB in the end (delta: 184.0 MB). Free memory was 102.8 MB in the beginning and 100.7 MB in the end (delta: 2.1 MB). Peak memory consumption was 186.1 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:13,757 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 137.9 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. [2020-07-17 14:56:13,758 INFO L168 Benchmark]: CACSL2BoogieTranslator took 222.51 ms. Allocated memory is still 137.9 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:13,759 INFO L168 Benchmark]: Boogie Preprocessor took 29.96 ms. Allocated memory is still 137.9 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:13,762 INFO L168 Benchmark]: RCFGBuilder took 393.61 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 91.4 MB in the beginning and 169.3 MB in the end (delta: -77.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:13,764 INFO L168 Benchmark]: TraceAbstraction took 11344.39 ms. Allocated memory was 202.9 MB in the beginning and 321.9 MB in the end (delta: 119.0 MB). Free memory was 168.6 MB in the beginning and 100.7 MB in the end (delta: 67.9 MB). Peak memory consumption was 186.9 MB. Max. memory is 7.1 GB. [2020-07-17 14:56:13,772 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 137.9 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 222.51 ms. Allocated memory is still 137.9 MB. Free memory was 102.4 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.96 ms. Allocated memory is still 137.9 MB. Free memory was 93.0 MB in the beginning and 91.6 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 393.61 ms. Allocated memory was 137.9 MB in the beginning and 202.9 MB in the end (delta: 65.0 MB). Free memory was 91.4 MB in the beginning and 169.3 MB in the end (delta: -77.9 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11344.39 ms. Allocated memory was 202.9 MB in the beginning and 321.9 MB in the end (delta: 119.0 MB). Free memory was 168.6 MB in the beginning and 100.7 MB in the end (delta: 67.9 MB). Peak memory consumption was 186.9 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: 18]: Loop Invariant Derived loop invariant: (((((x + 105 <= 10 * y || x + 78 <= 7 * y) || x + 50 <= 0) || x + 65 <= 5 * y) || x + 86 <= 8 * y) || x + 56 <= 3 * y) || x + 51 <= y - 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, 34 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 10.7s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 202 SDslu, 2195 SDs, 0 SdLazy, 5535 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 417 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 5.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=67occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 12 MinimizatonAttempts, 10 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 95 PreInvPairs, 179 NumberOfFragments, 384 HoareAnnotationTreeSize, 95 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 331 FormulaSimplificationTreeSizeReductionInter, 0.3s 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...