/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 0.1.25-86f66a4 [2020-07-07 14:01:10,560 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:01:10,562 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:01:10,576 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:01:10,576 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:01:10,577 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:01:10,579 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:01:10,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:01:10,582 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:01:10,583 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:01:10,584 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:01:10,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:01:10,585 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:01:10,586 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:01:10,587 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:01:10,589 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:01:10,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:01:10,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:01:10,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:01:10,594 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:01:10,595 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:01:10,596 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:01:10,597 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:01:10,598 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:01:10,600 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 14:01:10,601 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 14:01:10,601 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 14:01:10,602 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 14:01:10,602 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 14:01:10,603 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 14:01:10,603 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 14:01:10,604 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 14:01:10,605 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 14:01:10,606 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 14:01:10,607 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 14:01:10,607 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 14:01:10,608 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 14:01:10,608 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 14:01:10,608 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:01:10,609 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:01:10,610 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:01:10,611 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 14:01:10,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:01:10,620 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:01:10,622 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:01:10,622 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:01:10,622 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:01:10,622 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:01:10,623 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:01:10,623 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:01:10,623 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:01:10,623 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:01:10,623 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:01:10,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:01:10,624 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:01:10,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:01:10,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:01:10,625 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:01:10,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:01:10,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:01:10,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:01:10,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:01:10,626 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:01:10,626 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:01:10,626 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:01:10,939 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:01:10,963 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:01:10,968 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:01:10,970 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:01:10,970 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:01:10,971 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nested6.i [2020-07-07 14:01:11,039 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632996e34/3416b631d1ae44418aad413cecc7e333/FLAG394c3437f [2020-07-07 14:01:11,454 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:01:11,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nested6.i [2020-07-07 14:01:11,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632996e34/3416b631d1ae44418aad413cecc7e333/FLAG394c3437f [2020-07-07 14:01:11,798 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/632996e34/3416b631d1ae44418aad413cecc7e333 [2020-07-07 14:01:11,809 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:01:11,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:01:11,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:11,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:01:11,816 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:01:11,817 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:11" (1/1) ... [2020-07-07 14:01:11,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58d2d482 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:11, skipping insertion in model container [2020-07-07 14:01:11,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:11" (1/1) ... [2020-07-07 14:01:11,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:01:11,846 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:01:12,035 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:12,041 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:01:12,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:12,086 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:01:12,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12 WrapperNode [2020-07-07 14:01:12,088 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:12,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:01:12,089 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:01:12,089 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:01:12,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (1/1) ... [2020-07-07 14:01:12,105 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (1/1) ... [2020-07-07 14:01:12,113 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (1/1) ... [2020-07-07 14:01:12,114 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (1/1) ... [2020-07-07 14:01:12,124 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (1/1) ... [2020-07-07 14:01:12,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (1/1) ... [2020-07-07 14:01:12,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (1/1) ... [2020-07-07 14:01:12,142 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:01:12,143 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:01:12,143 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:01:12,143 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:01:12,147 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (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 14:01:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:01:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:01:12,351 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 14:01:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 14:01:12,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:01:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:01:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 14:01:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 14:01:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:01:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:01:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:01:12,352 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:01:12,353 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:01:12,603 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:01:12,604 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-07 14:01:12,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:12 BoogieIcfgContainer [2020-07-07 14:01:12,611 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:01:12,613 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:01:12,614 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:01:12,618 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:01:12,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:01:11" (1/3) ... [2020-07-07 14:01:12,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52891509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:12, skipping insertion in model container [2020-07-07 14:01:12,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:12" (2/3) ... [2020-07-07 14:01:12,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52891509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:12, skipping insertion in model container [2020-07-07 14:01:12,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:12" (3/3) ... [2020-07-07 14:01:12,623 INFO L109 eAbstractionObserver]: Analyzing ICFG nested6.i [2020-07-07 14:01:12,642 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:01:12,665 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:01:12,706 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:01:12,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:01:12,751 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:01:12,751 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:01:12,751 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:01:12,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:01:12,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:01:12,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:01:12,752 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:01:12,767 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states. [2020-07-07 14:01:12,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 14:01:12,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:12,781 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] [2020-07-07 14:01:12,781 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:12,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:12,787 INFO L82 PathProgramCache]: Analyzing trace with hash 2127483765, now seen corresponding path program 1 times [2020-07-07 14:01:12,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:12,795 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [934283608] [2020-07-07 14:01:12,795 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:12,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:13,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:13,044 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 14:01:13,045 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:13,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [934283608] [2020-07-07 14:01:13,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:13,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 14:01:13,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211118627] [2020-07-07 14:01:13,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 14:01:13,060 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:13,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 14:01:13,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 14:01:13,073 INFO L87 Difference]: Start difference. First operand 50 states. Second operand 5 states. [2020-07-07 14:01:13,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:13,221 INFO L93 Difference]: Finished difference Result 89 states and 112 transitions. [2020-07-07 14:01:13,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 14:01:13,223 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-07 14:01:13,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:13,235 INFO L225 Difference]: With dead ends: 89 [2020-07-07 14:01:13,235 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 14:01:13,241 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 14:01:13,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 14:01:13,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-07 14:01:13,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-07 14:01:13,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2020-07-07 14:01:13,299 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 27 [2020-07-07 14:01:13,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:13,300 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2020-07-07 14:01:13,300 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 14:01:13,300 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2020-07-07 14:01:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-07 14:01:13,301 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:13,301 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] [2020-07-07 14:01:13,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:01:13,302 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:13,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:13,304 INFO L82 PathProgramCache]: Analyzing trace with hash 1763359327, now seen corresponding path program 1 times [2020-07-07 14:01:13,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:13,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448220929] [2020-07-07 14:01:13,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:13,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:13,396 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 14:01:13,397 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:13,397 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448220929] [2020-07-07 14:01:13,398 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:13,398 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 14:01:13,398 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160609335] [2020-07-07 14:01:13,400 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 14:01:13,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:13,400 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 14:01:13,401 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 14:01:13,401 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 6 states. [2020-07-07 14:01:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:13,603 INFO L93 Difference]: Finished difference Result 90 states and 105 transitions. [2020-07-07 14:01:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 14:01:13,605 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 29 [2020-07-07 14:01:13,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:13,607 INFO L225 Difference]: With dead ends: 90 [2020-07-07 14:01:13,608 INFO L226 Difference]: Without dead ends: 88 [2020-07-07 14:01:13,610 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 14:01:13,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-07 14:01:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 59. [2020-07-07 14:01:13,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-07 14:01:13,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-07-07 14:01:13,632 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 29 [2020-07-07 14:01:13,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:13,632 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-07-07 14:01:13,632 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 14:01:13,633 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-07-07 14:01:13,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-07 14:01:13,634 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:13,634 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] [2020-07-07 14:01:13,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:01:13,635 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:13,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:13,635 INFO L82 PathProgramCache]: Analyzing trace with hash 2139784298, now seen corresponding path program 1 times [2020-07-07 14:01:13,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:13,636 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1482241911] [2020-07-07 14:01:13,636 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:13,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:13,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:13,751 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 14:01:13,751 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:13,752 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1482241911] [2020-07-07 14:01:13,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:13,752 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 14:01:13,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210713233] [2020-07-07 14:01:13,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 14:01:13,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:13,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 14:01:13,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 14:01:13,757 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 5 states. [2020-07-07 14:01:13,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:13,866 INFO L93 Difference]: Finished difference Result 86 states and 98 transitions. [2020-07-07 14:01:13,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 14:01:13,867 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 32 [2020-07-07 14:01:13,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:13,871 INFO L225 Difference]: With dead ends: 86 [2020-07-07 14:01:13,871 INFO L226 Difference]: Without dead ends: 84 [2020-07-07 14:01:13,872 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 14:01:13,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-07 14:01:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2020-07-07 14:01:13,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-07-07 14:01:13,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 92 transitions. [2020-07-07 14:01:13,890 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 92 transitions. Word has length 32 [2020-07-07 14:01:13,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:13,891 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 92 transitions. [2020-07-07 14:01:13,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 14:01:13,891 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 92 transitions. [2020-07-07 14:01:13,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 14:01:13,893 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:13,893 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] [2020-07-07 14:01:13,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:01:13,894 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:13,894 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:13,894 INFO L82 PathProgramCache]: Analyzing trace with hash -268568898, now seen corresponding path program 1 times [2020-07-07 14:01:13,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:13,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151048218] [2020-07-07 14:01:13,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:13,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,045 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 14:01:14,046 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:14,046 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151048218] [2020-07-07 14:01:14,046 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:14,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 14:01:14,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859100788] [2020-07-07 14:01:14,047 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 14:01:14,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:14,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 14:01:14,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 14:01:14,048 INFO L87 Difference]: Start difference. First operand 80 states and 92 transitions. Second operand 8 states. [2020-07-07 14:01:14,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:14,312 INFO L93 Difference]: Finished difference Result 137 states and 162 transitions. [2020-07-07 14:01:14,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 14:01:14,313 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 38 [2020-07-07 14:01:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:14,317 INFO L225 Difference]: With dead ends: 137 [2020-07-07 14:01:14,317 INFO L226 Difference]: Without dead ends: 135 [2020-07-07 14:01:14,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-07 14:01:14,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-07-07 14:01:14,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 83. [2020-07-07 14:01:14,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-07-07 14:01:14,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 95 transitions. [2020-07-07 14:01:14,341 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 95 transitions. Word has length 38 [2020-07-07 14:01:14,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:14,342 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 95 transitions. [2020-07-07 14:01:14,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 14:01:14,342 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 95 transitions. [2020-07-07 14:01:14,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-07 14:01:14,343 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:14,344 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] [2020-07-07 14:01:14,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 14:01:14,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:14,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:14,345 INFO L82 PathProgramCache]: Analyzing trace with hash -360550748, now seen corresponding path program 1 times [2020-07-07 14:01:14,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:14,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766715526] [2020-07-07 14:01:14,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:14,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,407 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 14:01:14,408 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:14,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766715526] [2020-07-07 14:01:14,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:14,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 14:01:14,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604721015] [2020-07-07 14:01:14,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 14:01:14,410 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:14,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 14:01:14,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 14:01:14,410 INFO L87 Difference]: Start difference. First operand 83 states and 95 transitions. Second operand 6 states. [2020-07-07 14:01:14,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:14,576 INFO L93 Difference]: Finished difference Result 194 states and 236 transitions. [2020-07-07 14:01:14,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 14:01:14,577 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-07-07 14:01:14,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:14,579 INFO L225 Difference]: With dead ends: 194 [2020-07-07 14:01:14,579 INFO L226 Difference]: Without dead ends: 128 [2020-07-07 14:01:14,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:01:14,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-07 14:01:14,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 88. [2020-07-07 14:01:14,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-07 14:01:14,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 100 transitions. [2020-07-07 14:01:14,604 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 100 transitions. Word has length 38 [2020-07-07 14:01:14,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:14,605 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 100 transitions. [2020-07-07 14:01:14,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 14:01:14,606 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 100 transitions. [2020-07-07 14:01:14,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-07-07 14:01:14,607 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:14,608 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] [2020-07-07 14:01:14,608 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 14:01:14,608 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:14,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:14,609 INFO L82 PathProgramCache]: Analyzing trace with hash 1447898534, now seen corresponding path program 1 times [2020-07-07 14:01:14,609 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:14,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2078087081] [2020-07-07 14:01:14,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:14,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:14,733 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 14:01:14,734 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:14,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2078087081] [2020-07-07 14:01:14,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:14,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 14:01:14,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459252564] [2020-07-07 14:01:14,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 14:01:14,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:14,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 14:01:14,740 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 14:01:14,741 INFO L87 Difference]: Start difference. First operand 88 states and 100 transitions. Second operand 8 states. [2020-07-07 14:01:14,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:14,949 INFO L93 Difference]: Finished difference Result 111 states and 127 transitions. [2020-07-07 14:01:14,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 14:01:14,950 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 46 [2020-07-07 14:01:14,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:14,952 INFO L225 Difference]: With dead ends: 111 [2020-07-07 14:01:14,952 INFO L226 Difference]: Without dead ends: 109 [2020-07-07 14:01:14,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-07-07 14:01:14,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-07-07 14:01:14,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 93. [2020-07-07 14:01:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-07 14:01:14,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 105 transitions. [2020-07-07 14:01:14,986 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 105 transitions. Word has length 46 [2020-07-07 14:01:14,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:14,986 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 105 transitions. [2020-07-07 14:01:14,987 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 14:01:14,987 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 105 transitions. [2020-07-07 14:01:14,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-07 14:01:14,993 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:14,995 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] [2020-07-07 14:01:14,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 14:01:14,995 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:14,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:14,996 INFO L82 PathProgramCache]: Analyzing trace with hash 87970788, now seen corresponding path program 1 times [2020-07-07 14:01:14,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:14,999 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875607339] [2020-07-07 14:01:14,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:15,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,170 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 14:01:15,170 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:15,170 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875607339] [2020-07-07 14:01:15,171 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:15,171 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:01:15,171 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794815652] [2020-07-07 14:01:15,171 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:01:15,172 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:15,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:01:15,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:01:15,173 INFO L87 Difference]: Start difference. First operand 93 states and 105 transitions. Second operand 10 states. [2020-07-07 14:01:15,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:15,503 INFO L93 Difference]: Finished difference Result 140 states and 165 transitions. [2020-07-07 14:01:15,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-07-07 14:01:15,504 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 50 [2020-07-07 14:01:15,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:15,508 INFO L225 Difference]: With dead ends: 140 [2020-07-07 14:01:15,508 INFO L226 Difference]: Without dead ends: 138 [2020-07-07 14:01:15,509 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=313, Unknown=0, NotChecked=0, Total=420 [2020-07-07 14:01:15,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-07 14:01:15,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 76. [2020-07-07 14:01:15,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 14:01:15,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-07-07 14:01:15,532 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 50 [2020-07-07 14:01:15,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:15,533 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-07-07 14:01:15,534 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:01:15,534 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-07-07 14:01:15,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-07-07 14:01:15,537 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:15,538 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] [2020-07-07 14:01:15,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 14:01:15,538 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:15,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:15,539 INFO L82 PathProgramCache]: Analyzing trace with hash 2033926999, now seen corresponding path program 1 times [2020-07-07 14:01:15,539 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:15,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1725567916] [2020-07-07 14:01:15,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:15,706 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 14:01:15,706 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:15,706 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1725567916] [2020-07-07 14:01:15,707 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:15,707 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-07 14:01:15,707 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469419139] [2020-07-07 14:01:15,708 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-07 14:01:15,708 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:15,708 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-07 14:01:15,708 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-07-07 14:01:15,709 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 10 states. [2020-07-07 14:01:16,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:16,023 INFO L93 Difference]: Finished difference Result 98 states and 110 transitions. [2020-07-07 14:01:16,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 14:01:16,024 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 55 [2020-07-07 14:01:16,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:16,025 INFO L225 Difference]: With dead ends: 98 [2020-07-07 14:01:16,025 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 14:01:16,026 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2020-07-07 14:01:16,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 14:01:16,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 14:01:16,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 14:01:16,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 14:01:16,028 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 55 [2020-07-07 14:01:16,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:16,029 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 14:01:16,029 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-07 14:01:16,029 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 14:01:16,029 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 14:01:16,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 14:01:16,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 14:01:17,236 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:17,236 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:17,236 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-07 14:01:17,236 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 14:01:17,236 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 14:01:17,236 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-07 14:01:17,236 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:17,237 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:17,237 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-07 14:01:17,237 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-07 14:01:17,237 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-07 14:01:17,237 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)) [2020-07-07 14:01:17,238 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 37) the Hoare annotation is: true [2020-07-07 14:01:17,238 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)) [2020-07-07 14:01:17,238 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))) [2020-07-07 14:01:17,239 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))) [2020-07-07 14:01:17,239 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)) [2020-07-07 14:01:17,239 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-07 14:01:17,239 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-07-07 14:01:17,239 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-07-07 14:01:17,240 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)) [2020-07-07 14:01:17,240 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)) [2020-07-07 14:01:17,240 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)) [2020-07-07 14:01:17,240 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)) [2020-07-07 14:01:17,240 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-07-07 14:01:17,240 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-07-07 14:01:17,241 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-07-07 14:01:17,241 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)) [2020-07-07 14:01:17,241 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))) [2020-07-07 14:01:17,241 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))) [2020-07-07 14:01:17,241 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))) [2020-07-07 14:01:17,242 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-07-07 14:01:17,242 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-07-07 14:01:17,242 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 37) the Hoare annotation is: true [2020-07-07 14:01:17,242 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)) [2020-07-07 14:01:17,242 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 37) the Hoare annotation is: true [2020-07-07 14:01:17,242 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)) [2020-07-07 14:01:17,243 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))) [2020-07-07 14:01:17,243 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))) [2020-07-07 14:01:17,243 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)) [2020-07-07 14:01:17,243 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)) [2020-07-07 14:01:17,243 INFO L271 CegarLoopResult]: At program point L18(lines 18 21) the Hoare annotation is: true [2020-07-07 14:01:17,244 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)) [2020-07-07 14:01:17,244 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)) [2020-07-07 14:01:17,244 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)) [2020-07-07 14:01:17,244 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-07 14:01:17,244 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-07 14:01:17,244 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-07 14:01:17,245 INFO L271 CegarLoopResult]: At program point L35(lines 13 37) the Hoare annotation is: true [2020-07-07 14:01:17,245 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-07 14:01:17,245 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))) [2020-07-07 14:01:17,245 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:17,245 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 14:01:17,246 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))) [2020-07-07 14:01:17,246 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-07 14:01:17,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 02:01:17 BoogieIcfgContainer [2020-07-07 14:01:17,268 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 14:01:17,270 INFO L168 Benchmark]: Toolchain (without parser) took 5459.24 ms. Allocated memory was 141.6 MB in the beginning and 285.7 MB in the end (delta: 144.2 MB). Free memory was 99.8 MB in the beginning and 209.9 MB in the end (delta: -110.2 MB). Peak memory consumption was 124.1 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:17,271 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 14:01:17,272 INFO L168 Benchmark]: CACSL2BoogieTranslator took 276.29 ms. Allocated memory is still 141.6 MB. Free memory was 99.6 MB in the beginning and 90.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:17,273 INFO L168 Benchmark]: Boogie Preprocessor took 54.19 ms. Allocated memory is still 141.6 MB. Free memory was 90.0 MB in the beginning and 88.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:17,274 INFO L168 Benchmark]: RCFGBuilder took 468.00 ms. Allocated memory was 141.6 MB in the beginning and 201.3 MB in the end (delta: 59.8 MB). Free memory was 88.4 MB in the beginning and 164.1 MB in the end (delta: -75.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:17,275 INFO L168 Benchmark]: TraceAbstraction took 4654.21 ms. Allocated memory was 201.3 MB in the beginning and 285.7 MB in the end (delta: 84.4 MB). Free memory was 164.1 MB in the beginning and 209.9 MB in the end (delta: -45.9 MB). Peak memory consumption was 128.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:17,279 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 118.2 MB in the beginning and 118.0 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 276.29 ms. Allocated memory is still 141.6 MB. Free memory was 99.6 MB in the beginning and 90.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.19 ms. Allocated memory is still 141.6 MB. Free memory was 90.0 MB in the beginning and 88.4 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 468.00 ms. Allocated memory was 141.6 MB in the beginning and 201.3 MB in the end (delta: 59.8 MB). Free memory was 88.4 MB in the beginning and 164.1 MB in the end (delta: -75.7 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4654.21 ms. Allocated memory was 201.3 MB in the beginning and 285.7 MB in the end (delta: 84.4 MB). Free memory was 164.1 MB in the beginning and 209.9 MB in the end (delta: -45.9 MB). Peak memory consumption was 128.6 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: 3.2s, OverallIterations: 8, TraceHistogramMax: 4, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 437 SDtfs, 335 SDslu, 1624 SDs, 0 SdLazy, 876 SolverSat, 90 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 50 SyntacticMatches, 0 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: 0.1s 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, 0.7s 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...