/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-invgen/nested6.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:55:35,418 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:55:35,420 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:55:35,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:55:35,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:55:35,436 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:55:35,437 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:55:35,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:55:35,441 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:55:35,442 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:55:35,443 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:55:35,444 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:55:35,444 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:55:35,445 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:55:35,446 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:55:35,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:55:35,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:55:35,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:55:35,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:55:35,454 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:55:35,456 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:55:35,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:55:35,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:55:35,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:55:35,462 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:55:35,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:55:35,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:55:35,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:55:35,473 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 14:55:35,495 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:55:35,495 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:55:35,497 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:55:35,497 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:55:35,497 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:55:35,498 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:55:35,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:55:35,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:55:35,499 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:55:35,499 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:55:35,499 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:55:35,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:55:35,500 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:55:35,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:55:35,501 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:55:35,502 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:55:35,502 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:55:35,502 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:55:35,502 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:55:35,502 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:55:35,503 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:55:35,503 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:55:35,503 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:55:35,805 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:55:35,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:55:35,823 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:55:35,825 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:55:35,825 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:55:35,826 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-07-17 14:55:35,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53beebfb/a572ac9e6a3e4ee781e976f181502516/FLAG0ab5807aa [2020-07-17 14:55:36,454 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:55:36,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2020-07-17 14:55:36,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53beebfb/a572ac9e6a3e4ee781e976f181502516/FLAG0ab5807aa [2020-07-17 14:55:36,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f53beebfb/a572ac9e6a3e4ee781e976f181502516 [2020-07-17 14:55:36,813 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:55:36,816 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:55:36,821 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:55:36,821 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:55:36,825 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:55:36,826 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:55:36" (1/1) ... [2020-07-17 14:55:36,830 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6124f29c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:36, skipping insertion in model container [2020-07-17 14:55:36,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:55:36" (1/1) ... [2020-07-17 14:55:36,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:55:36,859 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:55:37,031 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:55:37,038 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:55:37,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:55:37,092 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:55:37,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37 WrapperNode [2020-07-17 14:55:37,093 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:55:37,094 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:55:37,094 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:55:37,094 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:55:37,107 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (1/1) ... [2020-07-17 14:55:37,108 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (1/1) ... [2020-07-17 14:55:37,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (1/1) ... [2020-07-17 14:55:37,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (1/1) ... [2020-07-17 14:55:37,118 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (1/1) ... [2020-07-17 14:55:37,212 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (1/1) ... [2020-07-17 14:55:37,214 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (1/1) ... [2020-07-17 14:55:37,218 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:55:37,219 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:55:37,219 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:55:37,219 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:55:37,220 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (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 14:55:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:55:37,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:55:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:55:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:55:37,285 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:55:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:55:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:55:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:55:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:55:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:55:37,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:55:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:55:37,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:55:37,561 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:55:37,561 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 14:55:37,568 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:55:37 BoogieIcfgContainer [2020-07-17 14:55:37,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:55:37,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:55:37,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:55:37,574 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:55:37,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:55:36" (1/3) ... [2020-07-17 14:55:37,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a99d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:55:37, skipping insertion in model container [2020-07-17 14:55:37,576 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:37" (2/3) ... [2020-07-17 14:55:37,576 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76a99d58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:55:37, skipping insertion in model container [2020-07-17 14:55:37,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:55:37" (3/3) ... [2020-07-17 14:55:37,579 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-07-17 14:55:37,594 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:55:37,604 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:55:37,625 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:55:37,653 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:55:37,654 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:55:37,654 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:55:37,654 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:55:37,654 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:55:37,655 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:55:37,655 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:55:37,655 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:55:37,674 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-17 14:55:37,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 14:55:37,687 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:37,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:37,689 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:37,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:37,710 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-07-17 14:55:37,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:37,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824780203] [2020-07-17 14:55:37,732 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:37,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:37,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:38,002 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 14:55:38,005 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:38,008 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [824780203] [2020-07-17 14:55:38,011 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:38,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 14:55:38,016 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1958685391] [2020-07-17 14:55:38,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 14:55:38,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:38,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 14:55:38,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 14:55:38,044 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-07-17 14:55:38,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:38,223 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-07-17 14:55:38,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 14:55:38,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-17 14:55:38,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:38,238 INFO L225 Difference]: With dead ends: 89 [2020-07-17 14:55:38,238 INFO L226 Difference]: Without dead ends: 48 [2020-07-17 14:55:38,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:55:38,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-17 14:55:38,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-17 14:55:38,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-17 14:55:38,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-17 14:55:38,300 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-07-17 14:55:38,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:38,301 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-17 14:55:38,301 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 14:55:38,301 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-17 14:55:38,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 14:55:38,303 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:38,303 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:38,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:55:38,304 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:38,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:38,305 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-07-17 14:55:38,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:38,306 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1929739531] [2020-07-17 14:55:38,306 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:38,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:38,422 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 14:55:38,423 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:38,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1929739531] [2020-07-17 14:55:38,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:38,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 14:55:38,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609720649] [2020-07-17 14:55:38,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 14:55:38,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:38,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 14:55:38,428 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:55:38,428 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-07-17 14:55:38,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:38,658 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-07-17 14:55:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 14:55:38,660 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-17 14:55:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:38,663 INFO L225 Difference]: With dead ends: 90 [2020-07-17 14:55:38,663 INFO L226 Difference]: Without dead ends: 88 [2020-07-17 14:55:38,665 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-17 14:55:38,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-17 14:55:38,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-07-17 14:55:38,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-17 14:55:38,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-17 14:55:38,688 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-07-17 14:55:38,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:38,689 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-17 14:55:38,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 14:55:38,689 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-17 14:55:38,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 14:55:38,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:38,691 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:38,692 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:55:38,692 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:38,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:38,693 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-07-17 14:55:38,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:38,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971012450] [2020-07-17 14:55:38,694 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:38,829 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 14:55:38,831 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:38,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971012450] [2020-07-17 14:55:38,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:38,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 14:55:38,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1058370842] [2020-07-17 14:55:38,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 14:55:38,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:38,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 14:55:38,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 14:55:38,835 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-07-17 14:55:38,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:38,950 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2020-07-17 14:55:38,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 14:55:38,951 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-07-17 14:55:38,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:38,956 INFO L225 Difference]: With dead ends: 86 [2020-07-17 14:55:38,956 INFO L226 Difference]: Without dead ends: 84 [2020-07-17 14:55:38,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:55:38,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-17 14:55:38,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-07-17 14:55:38,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-17 14:55:38,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-07-17 14:55:38,981 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 32 [2020-07-17 14:55:38,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:38,982 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-07-17 14:55:38,982 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 14:55:38,982 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-07-17 14:55:38,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 14:55:38,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:38,986 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:38,987 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:55:38,987 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:38,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:38,988 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-07-17 14:55:38,988 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:39,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [323129643] [2020-07-17 14:55:39,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,134 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 14:55:39,135 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:39,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [323129643] [2020-07-17 14:55:39,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:39,136 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 14:55:39,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [705300254] [2020-07-17 14:55:39,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 14:55:39,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:39,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 14:55:39,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 14:55:39,138 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 8 states. [2020-07-17 14:55:39,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:39,423 INFO L93 Difference]: Finished difference Result 137 states and 162 transitions. [2020-07-17 14:55:39,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 14:55:39,424 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-17 14:55:39,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:39,428 INFO L225 Difference]: With dead ends: 137 [2020-07-17 14:55:39,428 INFO L226 Difference]: Without dead ends: 135 [2020-07-17 14:55:39,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-17 14:55:39,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-17 14:55:39,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 83. [2020-07-17 14:55:39,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-17 14:55:39,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-07-17 14:55:39,459 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 38 [2020-07-17 14:55:39,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:39,463 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-07-17 14:55:39,463 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 14:55:39,464 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-07-17 14:55:39,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 14:55:39,466 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:39,467 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:39,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 14:55:39,467 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:39,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-07-17 14:55:39,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:39,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1812626413] [2020-07-17 14:55:39,469 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:39,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,571 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 14:55:39,573 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:39,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1812626413] [2020-07-17 14:55:39,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:39,575 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 14:55:39,576 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130670777] [2020-07-17 14:55:39,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 14:55:39,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:39,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 14:55:39,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 14:55:39,578 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 6 states. [2020-07-17 14:55:39,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:39,771 INFO L93 Difference]: Finished difference Result 194 states and 236 transitions. [2020-07-17 14:55:39,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 14:55:39,772 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-17 14:55:39,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:39,774 INFO L225 Difference]: With dead ends: 194 [2020-07-17 14:55:39,775 INFO L226 Difference]: Without dead ends: 128 [2020-07-17 14:55:39,776 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-17 14:55:39,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-17 14:55:39,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2020-07-17 14:55:39,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-17 14:55:39,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-07-17 14:55:39,803 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 38 [2020-07-17 14:55:39,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:39,803 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-07-17 14:55:39,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 14:55:39,804 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-07-17 14:55:39,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-17 14:55:39,806 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:39,806 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:39,806 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 14:55:39,806 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:39,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:39,807 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-07-17 14:55:39,807 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:39,808 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [431885969] [2020-07-17 14:55:39,808 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:39,934 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 14:55:39,935 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:39,935 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [431885969] [2020-07-17 14:55:39,935 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:39,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 14:55:39,936 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763532133] [2020-07-17 14:55:39,936 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 14:55:39,937 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:39,937 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 14:55:39,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 14:55:39,938 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2020-07-17 14:55:40,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:40,192 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2020-07-17 14:55:40,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 14:55:40,194 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-07-17 14:55:40,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:40,196 INFO L225 Difference]: With dead ends: 111 [2020-07-17 14:55:40,197 INFO L226 Difference]: Without dead ends: 109 [2020-07-17 14:55:40,198 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-17 14:55:40,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-17 14:55:40,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-07-17 14:55:40,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-17 14:55:40,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-07-17 14:55:40,256 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 46 [2020-07-17 14:55:40,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:40,257 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-07-17 14:55:40,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 14:55:40,257 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-07-17 14:55:40,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-17 14:55:40,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:40,262 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:40,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 14:55:40,263 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:40,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:40,267 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-07-17 14:55:40,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:40,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744372136] [2020-07-17 14:55:40,268 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:40,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,431 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 14:55:40,431 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:40,432 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744372136] [2020-07-17 14:55:40,432 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:40,432 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-17 14:55:40,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739201114] [2020-07-17 14:55:40,433 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 14:55:40,433 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:40,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 14:55:40,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-17 14:55:40,434 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 10 states. [2020-07-17 14:55:40,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:40,804 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2020-07-17 14:55:40,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-17 14:55:40,805 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-07-17 14:55:40,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:40,809 INFO L225 Difference]: With dead ends: 140 [2020-07-17 14:55:40,810 INFO L226 Difference]: Without dead ends: 138 [2020-07-17 14:55:40,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-07-17 14:55:40,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-17 14:55:40,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 76. [2020-07-17 14:55:40,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-17 14:55:40,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-07-17 14:55:40,834 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 50 [2020-07-17 14:55:40,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:40,834 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-07-17 14:55:40,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 14:55:40,835 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-07-17 14:55:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-17 14:55:40,842 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:40,842 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:40,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 14:55:40,842 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:40,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:40,843 INFO L82 PathProgramCache]: Analyzing trace with hash 2033926999, now seen corresponding path program 1 times [2020-07-17 14:55:40,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:40,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176491661] [2020-07-17 14:55:40,845 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:40,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:40,983 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 14:55:40,984 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:40,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176491661] [2020-07-17 14:55:40,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:40,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-17 14:55:40,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405246232] [2020-07-17 14:55:40,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 14:55:40,986 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:40,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 14:55:40,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-17 14:55:40,987 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 10 states. [2020-07-17 14:55:41,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:41,354 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-07-17 14:55:41,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 14:55:41,355 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-07-17 14:55:41,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:41,356 INFO L225 Difference]: With dead ends: 98 [2020-07-17 14:55:41,356 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 14:55:41,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-07-17 14:55:41,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 14:55:41,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 14:55:41,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 14:55:41,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 14:55:41,359 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-07-17 14:55:41,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:41,359 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 14:55:41,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 14:55:41,360 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 14:55:41,360 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 14:55:41,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 14:55:41,363 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 14:55:42,758 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:55:42,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:55:42,759 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:55:42,760 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 14:55:42,760 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 14:55:42,760 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:55:42,760 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:55:42,760 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:55:42,761 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 14:55:42,761 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-17 14:55:42,761 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:55:42,761 INFO L264 CegarLoopResult]: At program point L31(lines 23 33) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= (* 2 main_~i~0) main_~j~0) (<= main_~n~0 main_~k~0)) [2020-07-17 14:55:42,761 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 37) the Hoare annotation is: true [2020-07-17 14:55:42,761 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-17 14:55:42,762 INFO L264 CegarLoopResult]: At program point L23-3(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= .cse0 |main_#t~post3|) (<= .cse0 main_~j~0) (<= main_~n~0 main_~k~0))) [2020-07-17 14:55:42,762 INFO L264 CegarLoopResult]: At program point L23-4(line 23) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ .cse0 1) main_~j~0) (<= main_~k~0 main_~n~0) (<= .cse0 |main_#t~post3|) (<= main_~n~0 main_~k~0))) [2020-07-17 14:55:42,762 INFO L264 CegarLoopResult]: At program point L23-5(lines 23 33) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,762 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-17 14:55:42,762 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-07-17 14:55:42,764 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-07-17 14:55:42,764 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,764 INFO L264 CegarLoopResult]: At program point L24-1(lines 24 32) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,764 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,765 INFO L264 CegarLoopResult]: At program point L24-3(line 24) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,765 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-17 14:55:42,765 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-17 14:55:42,765 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-07-17 14:55:42,766 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,766 INFO L264 CegarLoopResult]: At program point L25-3(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= (+ main_~k~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= (+ |main_#t~post5| 1) main_~n~0) (<= .cse0 |main_#t~post5|) (<= .cse0 main_~j~0))) [2020-07-17 14:55:42,766 INFO L264 CegarLoopResult]: At program point L25-4(line 25) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ .cse0 1) main_~k~0) (<= (+ main_~j~0 1) main_~n~0) (<= (+ |main_#t~post5| 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= .cse0 |main_#t~post5|) (<= .cse0 main_~j~0))) [2020-07-17 14:55:42,766 INFO L264 CegarLoopResult]: At program point L25-5(lines 25 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= main_~k~0 main_~n~0) (<= .cse0 main_~j~0))) [2020-07-17 14:55:42,768 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-17 14:55:42,771 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-17 14:55:42,772 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 37) the Hoare annotation is: true [2020-07-17 14:55:42,772 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,772 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-07-17 14:55:42,772 INFO L264 CegarLoopResult]: At program point L30-1(line 30) the Hoare annotation is: (and (<= (+ main_~j~0 1) main_~n~0) (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,776 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= (+ main_~k~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= .cse0 main_~j~0))) [2020-07-17 14:55:42,777 INFO L264 CegarLoopResult]: At program point L26-1(lines 25 27) the Hoare annotation is: (let ((.cse0 (* 2 main_~i~0))) (and (<= (+ main_~j~0 1) main_~n~0) (<= (+ main_~k~0 1) main_~n~0) (<= .cse0 main_~k~0) (<= .cse0 main_~j~0))) [2020-07-17 14:55:42,777 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 34) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,777 INFO L264 CegarLoopResult]: At program point L22-3(line 22) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0) (<= (* 2 main_~i~0) main_~j~0)) [2020-07-17 14:55:42,777 INFO L271 CegarLoopResult]: At program point L18(lines 18 21) the Hoare annotation is: true [2020-07-17 14:55:42,778 INFO L264 CegarLoopResult]: At program point L22-4(line 22) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-17 14:55:42,778 INFO L264 CegarLoopResult]: At program point L18-1(lines 18 21) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-17 14:55:42,778 INFO L264 CegarLoopResult]: At program point L22-5(lines 22 34) the Hoare annotation is: (and (<= main_~k~0 main_~n~0) (<= main_~n~0 main_~k~0)) [2020-07-17 14:55:42,779 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 14:55:42,779 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-17 14:55:42,779 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-17 14:55:42,779 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-07-17 14:55:42,780 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 14:55:42,780 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:55:42,780 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:55:42,780 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 14:55:42,780 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:55:42,781 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:55:42,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:55:42 BoogieIcfgContainer [2020-07-17 14:55:42,811 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:55:42,820 INFO L168 Benchmark]: Toolchain (without parser) took 5998.45 ms. Allocated memory was 136.8 MB in the beginning and 285.2 MB in the end (delta: 148.4 MB). Free memory was 100.9 MB in the beginning and 194.4 MB in the end (delta: -93.6 MB). Peak memory consumption was 122.3 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:42,821 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 136.8 MB. Free memory is still 118.6 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 14:55:42,822 INFO L168 Benchmark]: CACSL2BoogieTranslator took 272.77 ms. Allocated memory is still 136.8 MB. Free memory was 100.5 MB in the beginning and 91.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:42,823 INFO L168 Benchmark]: Boogie Preprocessor took 124.43 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 91.1 MB in the beginning and 179.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:42,825 INFO L168 Benchmark]: RCFGBuilder took 349.52 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 164.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:42,828 INFO L168 Benchmark]: TraceAbstraction took 5241.61 ms. Allocated memory was 201.3 MB in the beginning and 285.2 MB in the end (delta: 83.9 MB). Free memory was 163.4 MB in the beginning and 194.4 MB in the end (delta: -31.0 MB). Peak memory consumption was 120.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:42,841 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 136.8 MB. Free memory is still 118.6 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 272.77 ms. Allocated memory is still 136.8 MB. Free memory was 100.5 MB in the beginning and 91.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 124.43 ms. Allocated memory was 136.8 MB in the beginning and 201.3 MB in the end (delta: 64.5 MB). Free memory was 91.1 MB in the beginning and 179.8 MB in the end (delta: -88.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 349.52 ms. Allocated memory is still 201.3 MB. Free memory was 179.8 MB in the beginning and 164.4 MB in the end (delta: 15.4 MB). Peak memory consumption was 15.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5241.61 ms. Allocated memory was 201.3 MB in the beginning and 285.2 MB in the end (delta: 83.9 MB). Free memory was 163.4 MB in the beginning and 194.4 MB in the end (delta: -31.0 MB). Peak memory consumption was 120.4 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: 22]: Loop Invariant Derived loop invariant: k <= n && n <= k - InvariantResult [Line: 23]: Loop Invariant Derived loop invariant: (k <= n && n <= k) && 2 * i <= j - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((j + 1 <= n && 2 * i <= k) && k <= n) && 2 * i <= j - 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: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 55 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.7s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 335 SDslu, 1624 SDs, 0 SdLazy, 876 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 8 MinimizatonAttempts, 203 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 50 LocationsWithAnnotation, 152 PreInvPairs, 237 NumberOfFragments, 417 HoareAnnotationTreeSize, 152 FomulaSimplifications, 48886 FormulaSimplificationTreeSizeReduction, 0.4s HoareSimplificationTime, 50 FomulaSimplificationsInter, 2689 FormulaSimplificationTreeSizeReductionInter, 0.9s 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...