/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 0.1.25-86f66a4 [2020-07-07 14:01:42,415 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:01:42,417 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:01:42,442 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:01:42,442 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:01:42,443 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:01:42,446 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:01:42,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:01:42,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:01:42,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:01:42,462 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:01:42,464 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:01:42,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:01:42,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:01:42,469 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:01:42,471 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:01:42,474 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:01:42,477 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:01:42,480 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:01:42,485 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:01:42,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:01:42,492 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:01:42,493 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:01:42,494 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:01:42,497 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 14:01:42,505 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:01:42,506 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:01:42,507 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:01:42,508 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 14:01:42,518 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:01:42,518 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:01:42,519 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:01:42,520 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:01:42,520 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:01:42,520 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:01:42,520 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:01:42,520 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:01:42,520 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:01:42,521 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:01:42,521 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:01:42,521 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:01:42,521 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:01:42,521 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:01:42,522 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:01:42,522 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:01:42,522 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:01:42,522 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:01:42,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:01:42,522 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:01:42,523 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:01:42,523 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:01:42,523 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:01:42,798 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:01:42,812 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:01:42,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:01:42,819 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:01:42,819 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:01:42,820 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.i [2020-07-07 14:01:42,909 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ff40473/9e2ed61a390c46fd960e91f5f91d9a77/FLAGc9b89d8d3 [2020-07-07 14:01:43,430 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:01:43,430 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/gsv2008.i [2020-07-07 14:01:43,437 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ff40473/9e2ed61a390c46fd960e91f5f91d9a77/FLAGc9b89d8d3 [2020-07-07 14:01:43,802 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d6ff40473/9e2ed61a390c46fd960e91f5f91d9a77 [2020-07-07 14:01:43,815 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:01:43,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:01:43,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:43,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:01:43,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:01:43,823 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:43" (1/1) ... [2020-07-07 14:01:43,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@482a699e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:43, skipping insertion in model container [2020-07-07 14:01:43,826 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:43" (1/1) ... [2020-07-07 14:01:43,833 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:01:43,852 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:01:44,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:44,024 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:01:44,042 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:44,059 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:01:44,060 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44 WrapperNode [2020-07-07 14:01:44,060 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:44,061 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:01:44,061 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:01:44,061 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:01:44,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (1/1) ... [2020-07-07 14:01:44,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (1/1) ... [2020-07-07 14:01:44,084 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (1/1) ... [2020-07-07 14:01:44,084 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (1/1) ... [2020-07-07 14:01:44,088 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (1/1) ... [2020-07-07 14:01:44,096 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (1/1) ... [2020-07-07 14:01:44,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (1/1) ... [2020-07-07 14:01:44,183 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:01:44,186 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:01:44,186 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:01:44,186 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:01:44,187 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (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 14:01:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:01:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:01:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 14:01:44,254 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 14:01:44,255 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:01:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:01:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 14:01:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 14:01:44,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:01:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:01:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:01:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:01:44,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:01:44,462 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:01:44,462 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 14:01:44,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:44 BoogieIcfgContainer [2020-07-07 14:01:44,466 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:01:44,468 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:01:44,468 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:01:44,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:01:44,472 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:01:43" (1/3) ... [2020-07-07 14:01:44,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418f17ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:44, skipping insertion in model container [2020-07-07 14:01:44,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:44" (2/3) ... [2020-07-07 14:01:44,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@418f17ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:44, skipping insertion in model container [2020-07-07 14:01:44,474 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:44" (3/3) ... [2020-07-07 14:01:44,476 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.i [2020-07-07 14:01:44,492 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:01:44,501 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:01:44,522 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:01:44,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:01:44,566 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:01:44,567 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:01:44,567 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:01:44,567 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:01:44,567 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:01:44,568 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:01:44,568 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:01:44,592 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-07 14:01:44,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 14:01:44,607 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:44,608 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:44,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:44,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:44,618 INFO L82 PathProgramCache]: Analyzing trace with hash 2104509233, now seen corresponding path program 1 times [2020-07-07 14:01:44,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:44,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442872192] [2020-07-07 14:01:44,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:44,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:44,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:44,788 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 14:01:44,788 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:44,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442872192] [2020-07-07 14:01:44,793 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:44,794 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 14:01:44,794 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474902386] [2020-07-07 14:01:44,800 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 14:01:44,801 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:44,817 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 14:01:44,818 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 14:01:44,821 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 2 states. [2020-07-07 14:01:44,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:44,854 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-07-07 14:01:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 14:01:44,855 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2020-07-07 14:01:44,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:44,866 INFO L225 Difference]: With dead ends: 41 [2020-07-07 14:01:44,866 INFO L226 Difference]: Without dead ends: 21 [2020-07-07 14:01:44,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 14:01:44,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-07 14:01:44,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-07-07 14:01:44,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-07-07 14:01:44,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-07-07 14:01:44,924 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2020-07-07 14:01:44,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:44,925 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-07-07 14:01:44,925 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 14:01:44,926 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-07-07 14:01:44,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 14:01:44,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:44,927 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:44,928 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:01:44,928 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:44,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:44,929 INFO L82 PathProgramCache]: Analyzing trace with hash 2097121065, now seen corresponding path program 1 times [2020-07-07 14:01:44,929 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:44,930 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [990621895] [2020-07-07 14:01:44,930 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:44,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:44,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:44,990 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 14:01:44,991 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:44,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [990621895] [2020-07-07 14:01:44,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:44,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 14:01:44,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442620272] [2020-07-07 14:01:44,994 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 14:01:44,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:44,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 14:01:44,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 14:01:44,995 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 3 states. [2020-07-07 14:01:45,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:45,040 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2020-07-07 14:01:45,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 14:01:45,041 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-07 14:01:45,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:45,042 INFO L225 Difference]: With dead ends: 28 [2020-07-07 14:01:45,042 INFO L226 Difference]: Without dead ends: 23 [2020-07-07 14:01:45,044 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 14:01:45,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-07 14:01:45,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-07-07 14:01:45,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-07-07 14:01:45,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-07-07 14:01:45,052 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-07-07 14:01:45,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:45,053 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-07-07 14:01:45,053 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 14:01:45,053 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-07-07 14:01:45,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 14:01:45,054 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:45,055 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] [2020-07-07 14:01:45,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:01:45,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:45,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:45,056 INFO L82 PathProgramCache]: Analyzing trace with hash -588245929, now seen corresponding path program 1 times [2020-07-07 14:01:45,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:45,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1376659634] [2020-07-07 14:01:45,057 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:45,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:45,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:45,311 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 14:01:45,312 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:45,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1376659634] [2020-07-07 14:01:45,313 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:45,316 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-07 14:01:45,317 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956099244] [2020-07-07 14:01:45,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-07 14:01:45,318 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:45,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-07 14:01:45,321 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-07 14:01:45,321 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 9 states. [2020-07-07 14:01:45,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:45,494 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-07-07 14:01:45,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 14:01:45,495 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-07-07 14:01:45,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:45,497 INFO L225 Difference]: With dead ends: 33 [2020-07-07 14:01:45,497 INFO L226 Difference]: Without dead ends: 28 [2020-07-07 14:01:45,498 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2020-07-07 14:01:45,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-07 14:01:45,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-07-07 14:01:45,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 14:01:45,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-07-07 14:01:45,507 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 21 [2020-07-07 14:01:45,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:45,507 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-07-07 14:01:45,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-07 14:01:45,507 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-07-07 14:01:45,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 14:01:45,509 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:45,509 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] [2020-07-07 14:01:45,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:01:45,510 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:45,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:45,510 INFO L82 PathProgramCache]: Analyzing trace with hash -590441495, now seen corresponding path program 2 times [2020-07-07 14:01:45,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:45,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [55673979] [2020-07-07 14:01:45,511 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:45,676 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 14:01:45,676 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:45,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [55673979] [2020-07-07 14:01:45,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:45,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 14:01:45,678 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052283532] [2020-07-07 14:01:45,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 14:01:45,679 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:45,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 14:01:45,679 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:01:45,680 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 12 states. [2020-07-07 14:01:45,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:45,894 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2020-07-07 14:01:45,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 14:01:45,894 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 26 [2020-07-07 14:01:45,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:45,896 INFO L225 Difference]: With dead ends: 38 [2020-07-07 14:01:45,896 INFO L226 Difference]: Without dead ends: 33 [2020-07-07 14:01:45,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=254, Unknown=0, NotChecked=0, Total=306 [2020-07-07 14:01:45,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-07 14:01:45,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-07 14:01:45,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 14:01:45,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-07-07 14:01:45,905 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 26 [2020-07-07 14:01:45,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:45,906 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-07-07 14:01:45,906 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 14:01:45,906 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-07-07 14:01:45,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 14:01:45,908 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:45,908 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] [2020-07-07 14:01:45,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:01:45,908 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:45,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:45,909 INFO L82 PathProgramCache]: Analyzing trace with hash -934609001, now seen corresponding path program 3 times [2020-07-07 14:01:45,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:45,910 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572254474] [2020-07-07 14:01:45,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:45,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:46,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:46,120 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 14:01:46,120 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:46,121 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572254474] [2020-07-07 14:01:46,121 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:46,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-07 14:01:46,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725533444] [2020-07-07 14:01:46,122 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-07 14:01:46,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:46,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-07 14:01:46,123 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=180, Unknown=0, NotChecked=0, Total=210 [2020-07-07 14:01:46,123 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 15 states. [2020-07-07 14:01:46,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:46,439 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-07-07 14:01:46,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-07 14:01:46,441 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 31 [2020-07-07 14:01:46,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:46,443 INFO L225 Difference]: With dead ends: 43 [2020-07-07 14:01:46,443 INFO L226 Difference]: Without dead ends: 38 [2020-07-07 14:01:46,445 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-07-07 14:01:46,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-07 14:01:46,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-07-07 14:01:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-07-07 14:01:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-07-07 14:01:46,460 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 31 [2020-07-07 14:01:46,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:46,462 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-07-07 14:01:46,462 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-07 14:01:46,463 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-07-07 14:01:46,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-07 14:01:46,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:46,464 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] [2020-07-07 14:01:46,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:01:46,465 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:46,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:46,467 INFO L82 PathProgramCache]: Analyzing trace with hash 1774497961, now seen corresponding path program 4 times [2020-07-07 14:01:46,467 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:46,468 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004528831] [2020-07-07 14:01:46,468 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:46,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:46,779 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 14:01:46,780 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:46,780 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004528831] [2020-07-07 14:01:46,781 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:46,781 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 14:01:46,781 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389839989] [2020-07-07 14:01:46,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 14:01:46,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:46,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 14:01:46,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-07-07 14:01:46,783 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 18 states. [2020-07-07 14:01:47,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:47,176 INFO L93 Difference]: Finished difference Result 48 states and 48 transitions. [2020-07-07 14:01:47,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-07 14:01:47,176 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 36 [2020-07-07 14:01:47,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:47,178 INFO L225 Difference]: With dead ends: 48 [2020-07-07 14:01:47,178 INFO L226 Difference]: Without dead ends: 43 [2020-07-07 14:01:47,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=86, Invalid=670, Unknown=0, NotChecked=0, Total=756 [2020-07-07 14:01:47,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-07 14:01:47,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-07 14:01:47,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-07 14:01:47,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-07-07 14:01:47,187 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 36 [2020-07-07 14:01:47,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:47,187 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-07-07 14:01:47,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 14:01:47,188 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-07 14:01:47,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 14:01:47,189 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:47,189 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] [2020-07-07 14:01:47,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 14:01:47,190 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:47,190 INFO L82 PathProgramCache]: Analyzing trace with hash -194454825, now seen corresponding path program 5 times [2020-07-07 14:01:47,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:47,191 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1969474528] [2020-07-07 14:01:47,191 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:47,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:47,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:47,505 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 14:01:47,505 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:47,506 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1969474528] [2020-07-07 14:01:47,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:47,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-07 14:01:47,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511886856] [2020-07-07 14:01:47,507 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-07-07 14:01:47,508 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:47,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-07-07 14:01:47,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-07-07 14:01:47,510 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 21 states. [2020-07-07 14:01:48,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:48,027 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2020-07-07 14:01:48,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-07-07 14:01:48,030 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 41 [2020-07-07 14:01:48,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:48,031 INFO L225 Difference]: With dead ends: 53 [2020-07-07 14:01:48,031 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 14:01:48,034 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 155 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=103, Invalid=953, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 14:01:48,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 14:01:48,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-07-07 14:01:48,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-07 14:01:48,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2020-07-07 14:01:48,045 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 41 [2020-07-07 14:01:48,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:48,046 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2020-07-07 14:01:48,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-07-07 14:01:48,046 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2020-07-07 14:01:48,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-07 14:01:48,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:48,049 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] [2020-07-07 14:01:48,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 14:01:48,050 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:48,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:48,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1783487849, now seen corresponding path program 6 times [2020-07-07 14:01:48,053 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:48,054 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [222831487] [2020-07-07 14:01:48,054 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:48,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:48,458 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 14:01:48,458 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:48,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [222831487] [2020-07-07 14:01:48,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:48,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-07-07 14:01:48,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512653080] [2020-07-07 14:01:48,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-07 14:01:48,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:48,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-07 14:01:48,462 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-07-07 14:01:48,463 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand 24 states. [2020-07-07 14:01:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:49,150 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-07-07 14:01:49,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-07-07 14:01:49,151 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2020-07-07 14:01:49,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:49,152 INFO L225 Difference]: With dead ends: 58 [2020-07-07 14:01:49,152 INFO L226 Difference]: Without dead ends: 53 [2020-07-07 14:01:49,153 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=1357, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 14:01:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-07 14:01:49,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 52. [2020-07-07 14:01:49,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-07 14:01:49,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2020-07-07 14:01:49,160 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 46 [2020-07-07 14:01:49,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:49,161 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2020-07-07 14:01:49,161 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-07 14:01:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2020-07-07 14:01:49,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-07 14:01:49,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:49,162 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] [2020-07-07 14:01:49,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 14:01:49,163 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:49,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:49,163 INFO L82 PathProgramCache]: Analyzing trace with hash 1046324759, now seen corresponding path program 7 times [2020-07-07 14:01:49,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:49,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284672608] [2020-07-07 14:01:49,164 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:49,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:49,646 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 14:01:49,647 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:49,647 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [284672608] [2020-07-07 14:01:49,647 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:49,648 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2020-07-07 14:01:49,648 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696274468] [2020-07-07 14:01:49,648 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-07-07 14:01:49,648 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:49,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-07-07 14:01:49,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-07-07 14:01:49,649 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand 27 states. [2020-07-07 14:01:50,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:50,451 INFO L93 Difference]: Finished difference Result 63 states and 63 transitions. [2020-07-07 14:01:50,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-07-07 14:01:50,453 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 51 [2020-07-07 14:01:50,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:50,454 INFO L225 Difference]: With dead ends: 63 [2020-07-07 14:01:50,454 INFO L226 Difference]: Without dead ends: 58 [2020-07-07 14:01:50,455 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=147, Invalid=1833, Unknown=0, NotChecked=0, Total=1980 [2020-07-07 14:01:50,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-07-07 14:01:50,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-07-07 14:01:50,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-07 14:01:50,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 57 transitions. [2020-07-07 14:01:50,470 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 57 transitions. Word has length 51 [2020-07-07 14:01:50,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:50,470 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 57 transitions. [2020-07-07 14:01:50,470 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-07-07 14:01:50,470 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 57 transitions. [2020-07-07 14:01:50,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-07 14:01:50,471 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:50,472 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] [2020-07-07 14:01:50,472 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 14:01:50,473 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:50,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:50,474 INFO L82 PathProgramCache]: Analyzing trace with hash 232135209, now seen corresponding path program 8 times [2020-07-07 14:01:50,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:50,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858681907] [2020-07-07 14:01:50,479 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:51,026 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 14:01:51,026 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:51,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858681907] [2020-07-07 14:01:51,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:51,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [30] imperfect sequences [] total 30 [2020-07-07 14:01:51,027 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896734510] [2020-07-07 14:01:51,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-07-07 14:01:51,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:51,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-07-07 14:01:51,029 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=805, Unknown=0, NotChecked=0, Total=870 [2020-07-07 14:01:51,029 INFO L87 Difference]: Start difference. First operand 57 states and 57 transitions. Second operand 30 states. [2020-07-07 14:01:52,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:52,005 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-07 14:01:52,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-07-07 14:01:52,006 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 56 [2020-07-07 14:01:52,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:52,007 INFO L225 Difference]: With dead ends: 68 [2020-07-07 14:01:52,007 INFO L226 Difference]: Without dead ends: 63 [2020-07-07 14:01:52,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=170, Invalid=2380, Unknown=0, NotChecked=0, Total=2550 [2020-07-07 14:01:52,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-07-07 14:01:52,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 62. [2020-07-07 14:01:52,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-07 14:01:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 62 transitions. [2020-07-07 14:01:52,017 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 62 transitions. Word has length 56 [2020-07-07 14:01:52,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:52,017 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 62 transitions. [2020-07-07 14:01:52,017 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-07-07 14:01:52,017 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 62 transitions. [2020-07-07 14:01:52,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-07 14:01:52,018 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:52,019 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] [2020-07-07 14:01:52,019 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 14:01:52,019 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:52,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:52,020 INFO L82 PathProgramCache]: Analyzing trace with hash 977101143, now seen corresponding path program 9 times [2020-07-07 14:01:52,020 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:52,020 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012062755] [2020-07-07 14:01:52,020 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:52,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:52,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:52,672 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 14:01:52,672 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:52,673 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012062755] [2020-07-07 14:01:52,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:52,673 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [33] imperfect sequences [] total 33 [2020-07-07 14:01:52,673 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491617970] [2020-07-07 14:01:52,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-07-07 14:01:52,674 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:52,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-07-07 14:01:52,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=984, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 14:01:52,674 INFO L87 Difference]: Start difference. First operand 62 states and 62 transitions. Second operand 33 states. [2020-07-07 14:01:53,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:53,920 INFO L93 Difference]: Finished difference Result 73 states and 73 transitions. [2020-07-07 14:01:53,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2020-07-07 14:01:53,920 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 61 [2020-07-07 14:01:53,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:53,922 INFO L225 Difference]: With dead ends: 73 [2020-07-07 14:01:53,922 INFO L226 Difference]: Without dead ends: 68 [2020-07-07 14:01:53,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 588 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=194, Invalid=2998, Unknown=0, NotChecked=0, Total=3192 [2020-07-07 14:01:53,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-07-07 14:01:53,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-07-07 14:01:53,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-07 14:01:53,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 67 transitions. [2020-07-07 14:01:53,932 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 67 transitions. Word has length 61 [2020-07-07 14:01:53,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:53,932 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 67 transitions. [2020-07-07 14:01:53,932 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-07-07 14:01:53,933 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 67 transitions. [2020-07-07 14:01:53,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-07-07 14:01:53,934 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:53,934 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] [2020-07-07 14:01:53,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 14:01:53,934 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:53,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:53,935 INFO L82 PathProgramCache]: Analyzing trace with hash 751396585, now seen corresponding path program 10 times [2020-07-07 14:01:53,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:53,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1822054222] [2020-07-07 14:01:53,936 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:53,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:54,712 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 14:01:54,713 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:54,713 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1822054222] [2020-07-07 14:01:54,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:54,714 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2020-07-07 14:01:54,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [100856891] [2020-07-07 14:01:54,714 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-07-07 14:01:54,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:54,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-07-07 14:01:54,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=1181, Unknown=0, NotChecked=0, Total=1260 [2020-07-07 14:01:54,716 INFO L87 Difference]: Start difference. First operand 67 states and 67 transitions. Second operand 36 states. [2020-07-07 14:01:56,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:56,133 INFO L93 Difference]: Finished difference Result 68 states and 68 transitions. [2020-07-07 14:01:56,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2020-07-07 14:01:56,134 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 66 [2020-07-07 14:01:56,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:56,134 INFO L225 Difference]: With dead ends: 68 [2020-07-07 14:01:56,134 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 14:01:56,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 738 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=221, Invalid=3685, Unknown=0, NotChecked=0, Total=3906 [2020-07-07 14:01:56,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 14:01:56,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 14:01:56,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 14:01:56,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 14:01:56,137 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 66 [2020-07-07 14:01:56,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:56,138 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 14:01:56,138 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-07-07 14:01:56,138 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 14:01:56,138 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 14:01:56,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 14:01:56,140 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 14:01:56,656 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:56,657 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:56,657 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:56,657 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 14:01:56,657 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 14:01:56,657 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:56,658 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:56,658 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:56,658 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-07 14:01:56,658 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-07 14:01:56,658 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:56,658 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 24) the Hoare annotation is: true [2020-07-07 14:01:56,659 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)))) [2020-07-07 14:01:56,659 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-07 14:01:56,659 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-07 14:01:56,659 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-07 14:01:56,659 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 24) the Hoare annotation is: true [2020-07-07 14:01:56,659 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 24) the Hoare annotation is: true [2020-07-07 14:01:56,659 INFO L271 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: true [2020-07-07 14:01:56,660 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))) [2020-07-07 14:01:56,660 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|))))) [2020-07-07 14:01:56,660 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))))) [2020-07-07 14:01:56,661 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-07 14:01:56,661 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)) [2020-07-07 14:01:56,661 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-07 14:01:56,661 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)) [2020-07-07 14:01:56,661 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-07 14:01:56,661 INFO L264 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: (<= (+ main_~x~0 50) 0) [2020-07-07 14:01:56,662 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:56,662 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:56,662 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:56,662 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 14:01:56,662 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:56,662 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:56,682 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 02:01:56 BoogieIcfgContainer [2020-07-07 14:01:56,682 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 14:01:56,685 INFO L168 Benchmark]: Toolchain (without parser) took 12867.53 ms. Allocated memory was 145.8 MB in the beginning and 328.2 MB in the end (delta: 182.5 MB). Free memory was 103.9 MB in the beginning and 237.2 MB in the end (delta: -133.4 MB). Peak memory consumption was 174.7 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:56,686 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 14:01:56,686 INFO L168 Benchmark]: CACSL2BoogieTranslator took 242.52 ms. Allocated memory is still 145.8 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:56,687 INFO L168 Benchmark]: Boogie Preprocessor took 122.10 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 94.3 MB in the beginning and 183.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:56,688 INFO L168 Benchmark]: RCFGBuilder took 280.79 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 169.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:56,689 INFO L168 Benchmark]: TraceAbstraction took 12214.64 ms. Allocated memory was 202.9 MB in the beginning and 328.2 MB in the end (delta: 125.3 MB). Free memory was 168.8 MB in the beginning and 241.3 MB in the end (delta: -72.6 MB). Peak memory consumption was 182.5 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:56,693 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 145.8 MB. Free memory was 122.3 MB in the beginning and 122.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 242.52 ms. Allocated memory is still 145.8 MB. Free memory was 103.7 MB in the beginning and 94.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.10 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 94.3 MB in the beginning and 183.0 MB in the end (delta: -88.8 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 280.79 ms. Allocated memory is still 202.9 MB. Free memory was 182.1 MB in the beginning and 169.4 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12214.64 ms. Allocated memory was 202.9 MB in the beginning and 328.2 MB in the end (delta: 125.3 MB). Free memory was 168.8 MB in the beginning and 241.3 MB in the end (delta: -72.6 MB). Peak memory consumption was 182.5 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: 11.5s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 6.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 242 SDtfs, 202 SDslu, 2195 SDs, 0 SdLazy, 5535 SolverSat, 136 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 399 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 351 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2709 ImplicationChecksByTransitivity, 6.0s 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, 0.1s 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...