/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/large_const.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 18:08:33,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 18:08:33,954 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 18:08:33,967 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 18:08:33,967 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 18:08:33,968 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 18:08:33,970 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 18:08:33,972 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 18:08:33,973 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 18:08:33,974 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 18:08:33,975 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 18:08:33,976 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 18:08:33,976 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 18:08:33,977 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 18:08:33,978 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 18:08:33,980 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 18:08:33,980 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 18:08:33,981 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 18:08:33,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 18:08:33,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 18:08:33,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 18:08:33,987 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 18:08:33,989 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 18:08:33,989 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 18:08:33,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 18:08:33,999 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 18:08:34,000 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 18:08:34,001 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 18:08:34,002 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 18:08:34,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 18:08:34,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 18:08:34,012 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 18:08:34,012 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 18:08:34,013 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 18:08:34,013 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 18:08:34,013 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 18:08:34,013 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 18:08:34,013 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 18:08:34,014 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 18:08:34,014 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 18:08:34,014 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 18:08:34,014 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 18:08:34,014 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 18:08:34,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 18:08:34,015 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 18:08:34,015 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 18:08:34,015 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 18:08:34,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 18:08:34,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 18:08:34,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 18:08:34,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 18:08:34,016 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 18:08:34,314 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 18:08:34,327 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 18:08:34,330 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 18:08:34,332 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 18:08:34,332 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 18:08:34,333 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-17 18:08:34,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c89160ca/c5868ff1b2d844378651553fdcb91816/FLAG74c0c1377 [2020-07-17 18:08:34,826 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 18:08:34,827 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-07-17 18:08:34,833 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c89160ca/c5868ff1b2d844378651553fdcb91816/FLAG74c0c1377 [2020-07-17 18:08:35,260 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c89160ca/c5868ff1b2d844378651553fdcb91816 [2020-07-17 18:08:35,269 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 18:08:35,272 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 18:08:35,273 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 18:08:35,273 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 18:08:35,277 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 18:08:35,278 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,281 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6089cd1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35, skipping insertion in model container [2020-07-17 18:08:35,281 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,289 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 18:08:35,309 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 18:08:35,480 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:08:35,485 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 18:08:35,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 18:08:35,517 INFO L208 MainTranslator]: Completed translation [2020-07-17 18:08:35,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35 WrapperNode [2020-07-17 18:08:35,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 18:08:35,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 18:08:35,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 18:08:35,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 18:08:35,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,626 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,627 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (1/1) ... [2020-07-17 18:08:35,634 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 18:08:35,635 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 18:08:35,635 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 18:08:35,635 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 18:08:35,636 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (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 18:08:35,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 18:08:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 18:08:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 18:08:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 18:08:35,698 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 18:08:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 18:08:35,698 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 18:08:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 18:08:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 18:08:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 18:08:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 18:08:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 18:08:35,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 18:08:35,948 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 18:08:35,949 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-07-17 18:08:35,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:08:35 BoogieIcfgContainer [2020-07-17 18:08:35,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 18:08:35,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 18:08:35,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 18:08:35,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 18:08:35,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 06:08:35" (1/3) ... [2020-07-17 18:08:35,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f67fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:08:35, skipping insertion in model container [2020-07-17 18:08:35,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 06:08:35" (2/3) ... [2020-07-17 18:08:35,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f67fb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 06:08:35, skipping insertion in model container [2020-07-17 18:08:35,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 06:08:35" (3/3) ... [2020-07-17 18:08:35,963 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-07-17 18:08:35,975 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 18:08:35,984 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 18:08:36,013 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 18:08:36,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 18:08:36,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 18:08:36,066 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 18:08:36,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 18:08:36,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 18:08:36,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 18:08:36,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 18:08:36,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 18:08:36,081 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-07-17 18:08:36,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 18:08:36,091 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:36,092 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 18:08:36,092 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:36,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:36,099 INFO L82 PathProgramCache]: Analyzing trace with hash 288343897, now seen corresponding path program 1 times [2020-07-17 18:08:36,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:36,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349191772] [2020-07-17 18:08:36,107 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:36,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:36,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:36,238 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 18:08:36,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349191772] [2020-07-17 18:08:36,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:08:36,241 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-17 18:08:36,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218754288] [2020-07-17 18:08:36,247 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-17 18:08:36,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:36,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-17 18:08:36,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 18:08:36,260 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-07-17 18:08:36,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:36,286 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-07-17 18:08:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-17 18:08:36,288 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-07-17 18:08:36,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:36,296 INFO L225 Difference]: With dead ends: 75 [2020-07-17 18:08:36,297 INFO L226 Difference]: Without dead ends: 48 [2020-07-17 18:08:36,300 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-17 18:08:36,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-17 18:08:36,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-07-17 18:08:36,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-07-17 18:08:36,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-07-17 18:08:36,346 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 27 [2020-07-17 18:08:36,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:36,347 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-07-17 18:08:36,347 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-17 18:08:36,347 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-07-17 18:08:36,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 18:08:36,348 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:36,348 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 18:08:36,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 18:08:36,349 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:36,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:36,350 INFO L82 PathProgramCache]: Analyzing trace with hash 320540924, now seen corresponding path program 1 times [2020-07-17 18:08:36,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:36,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982599335] [2020-07-17 18:08:36,351 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:36,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:36,445 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 18:08:36,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982599335] [2020-07-17 18:08:36,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:08:36,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 18:08:36,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984228770] [2020-07-17 18:08:36,448 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 18:08:36,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:36,449 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 18:08:36,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 18:08:36,450 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2020-07-17 18:08:36,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:36,581 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-07-17 18:08:36,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 18:08:36,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-17 18:08:36,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:36,584 INFO L225 Difference]: With dead ends: 67 [2020-07-17 18:08:36,585 INFO L226 Difference]: Without dead ends: 51 [2020-07-17 18:08:36,586 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-17 18:08:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-17 18:08:36,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-07-17 18:08:36,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-17 18:08:36,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-07-17 18:08:36,597 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2020-07-17 18:08:36,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:36,598 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-07-17 18:08:36,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 18:08:36,598 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-07-17 18:08:36,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-17 18:08:36,599 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:36,600 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:08:36,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 18:08:36,600 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:36,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash 751787059, now seen corresponding path program 1 times [2020-07-17 18:08:36,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:36,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1000332682] [2020-07-17 18:08:36,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:36,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:36,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:08:36,751 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1000332682] [2020-07-17 18:08:36,752 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:08:36,753 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 18:08:36,753 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136424831] [2020-07-17 18:08:36,755 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 18:08:36,755 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:36,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 18:08:36,756 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 18:08:36,757 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-07-17 18:08:36,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:36,912 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-07-17 18:08:36,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 18:08:36,912 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-07-17 18:08:36,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:36,914 INFO L225 Difference]: With dead ends: 88 [2020-07-17 18:08:36,915 INFO L226 Difference]: Without dead ends: 86 [2020-07-17 18:08:36,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-17 18:08:36,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-17 18:08:36,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-07-17 18:08:36,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-17 18:08:36,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-07-17 18:08:36,937 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 37 [2020-07-17 18:08:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:36,938 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-07-17 18:08:36,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 18:08:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-07-17 18:08:36,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 18:08:36,940 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:36,940 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:08:36,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 18:08:36,941 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:36,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:36,941 INFO L82 PathProgramCache]: Analyzing trace with hash 3796503, now seen corresponding path program 1 times [2020-07-17 18:08:36,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:36,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [31638304] [2020-07-17 18:08:36,942 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:36,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:08:37,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [31638304] [2020-07-17 18:08:37,043 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:08:37,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 18:08:37,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1186753468] [2020-07-17 18:08:37,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 18:08:37,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:37,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 18:08:37,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 18:08:37,045 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 7 states. [2020-07-17 18:08:37,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:37,195 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-07-17 18:08:37,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 18:08:37,196 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-17 18:08:37,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:37,199 INFO L225 Difference]: With dead ends: 105 [2020-07-17 18:08:37,199 INFO L226 Difference]: Without dead ends: 103 [2020-07-17 18:08:37,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-17 18:08:37,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-07-17 18:08:37,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-07-17 18:08:37,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-07-17 18:08:37,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-07-17 18:08:37,220 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 38 [2020-07-17 18:08:37,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:37,220 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-07-17 18:08:37,220 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 18:08:37,220 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-07-17 18:08:37,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 18:08:37,222 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:37,222 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:08:37,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 18:08:37,223 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:37,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:37,223 INFO L82 PathProgramCache]: Analyzing trace with hash 197728887, now seen corresponding path program 1 times [2020-07-17 18:08:37,223 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:37,224 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [234690810] [2020-07-17 18:08:37,224 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:08:37,313 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [234690810] [2020-07-17 18:08:37,314 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:08:37,314 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 18:08:37,314 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1912736118] [2020-07-17 18:08:37,315 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 18:08:37,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:37,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 18:08:37,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 18:08:37,316 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 7 states. [2020-07-17 18:08:37,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:37,431 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2020-07-17 18:08:37,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-17 18:08:37,432 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-17 18:08:37,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:37,434 INFO L225 Difference]: With dead ends: 116 [2020-07-17 18:08:37,434 INFO L226 Difference]: Without dead ends: 114 [2020-07-17 18:08:37,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-17 18:08:37,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-17 18:08:37,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2020-07-17 18:08:37,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-17 18:08:37,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-07-17 18:08:37,455 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 38 [2020-07-17 18:08:37,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:37,455 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-07-17 18:08:37,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 18:08:37,456 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-07-17 18:08:37,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-07-17 18:08:37,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:37,458 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:08:37,458 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 18:08:37,458 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:37,459 INFO L82 PathProgramCache]: Analyzing trace with hash 88652198, now seen corresponding path program 1 times [2020-07-17 18:08:37,459 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:37,459 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765511577] [2020-07-17 18:08:37,460 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,567 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:08:37,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765511577] [2020-07-17 18:08:37,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:08:37,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-17 18:08:37,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18740105] [2020-07-17 18:08:37,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 18:08:37,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:37,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 18:08:37,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 18:08:37,570 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 9 states. [2020-07-17 18:08:37,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:37,774 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-07-17 18:08:37,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 18:08:37,775 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-07-17 18:08:37,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:37,778 INFO L225 Difference]: With dead ends: 129 [2020-07-17 18:08:37,779 INFO L226 Difference]: Without dead ends: 127 [2020-07-17 18:08:37,779 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-07-17 18:08:37,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-17 18:08:37,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-07-17 18:08:37,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-07-17 18:08:37,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2020-07-17 18:08:37,799 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 49 [2020-07-17 18:08:37,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:37,800 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2020-07-17 18:08:37,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 18:08:37,800 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2020-07-17 18:08:37,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-17 18:08:37,802 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:37,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1] [2020-07-17 18:08:37,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 18:08:37,802 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:37,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:37,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1084443264, now seen corresponding path program 1 times [2020-07-17 18:08:37,803 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:37,803 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588350530] [2020-07-17 18:08:37,804 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:37,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:08:37,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588350530] [2020-07-17 18:08:37,861 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:08:37,861 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-07-17 18:08:37,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14260657] [2020-07-17 18:08:37,862 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 18:08:37,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:37,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 18:08:37,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 18:08:37,864 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand 6 states. [2020-07-17 18:08:37,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:37,937 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2020-07-17 18:08:37,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 18:08:37,938 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-07-17 18:08:37,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:37,940 INFO L225 Difference]: With dead ends: 150 [2020-07-17 18:08:37,940 INFO L226 Difference]: Without dead ends: 70 [2020-07-17 18:08:37,941 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-07-17 18:08:37,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-17 18:08:37,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-07-17 18:08:37,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-17 18:08:37,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-07-17 18:08:37,956 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 48 [2020-07-17 18:08:37,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:37,957 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-07-17 18:08:37,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 18:08:37,958 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-07-17 18:08:37,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-17 18:08:37,959 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:37,959 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:08:37,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 18:08:37,960 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:37,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:37,960 INFO L82 PathProgramCache]: Analyzing trace with hash -1391225462, now seen corresponding path program 1 times [2020-07-17 18:08:37,961 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:37,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376792423] [2020-07-17 18:08:37,961 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,134 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:08:38,135 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376792423] [2020-07-17 18:08:38,135 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:08:38,135 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-17 18:08:38,136 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073761602] [2020-07-17 18:08:38,137 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 18:08:38,137 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:38,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 18:08:38,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 18:08:38,138 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 9 states. [2020-07-17 18:08:38,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:38,322 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-07-17 18:08:38,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 18:08:38,323 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-07-17 18:08:38,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:38,325 INFO L225 Difference]: With dead ends: 96 [2020-07-17 18:08:38,325 INFO L226 Difference]: Without dead ends: 94 [2020-07-17 18:08:38,326 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-07-17 18:08:38,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-07-17 18:08:38,344 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2020-07-17 18:08:38,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-17 18:08:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-07-17 18:08:38,351 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 50 [2020-07-17 18:08:38,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:38,352 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-07-17 18:08:38,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 18:08:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-07-17 18:08:38,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-17 18:08:38,355 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:38,356 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 18:08:38,356 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 18:08:38,356 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:38,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:38,357 INFO L82 PathProgramCache]: Analyzing trace with hash -798805526, now seen corresponding path program 1 times [2020-07-17 18:08:38,357 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:38,357 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1487844910] [2020-07-17 18:08:38,358 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:38,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 18:08:38,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1487844910] [2020-07-17 18:08:38,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 18:08:38,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-07-17 18:08:38,490 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635922743] [2020-07-17 18:08:38,490 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 18:08:38,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:38,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 18:08:38,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 18:08:38,491 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 9 states. [2020-07-17 18:08:38,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:38,647 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-07-17 18:08:38,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 18:08:38,648 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-07-17 18:08:38,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:38,649 INFO L225 Difference]: With dead ends: 94 [2020-07-17 18:08:38,650 INFO L226 Difference]: Without dead ends: 92 [2020-07-17 18:08:38,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-07-17 18:08:38,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-17 18:08:38,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-07-17 18:08:38,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-17 18:08:38,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-07-17 18:08:38,664 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 50 [2020-07-17 18:08:38,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:38,665 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-07-17 18:08:38,665 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 18:08:38,665 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-07-17 18:08:38,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-17 18:08:38,667 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 18:08:38,667 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2020-07-17 18:08:38,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 18:08:38,667 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 18:08:38,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 18:08:38,668 INFO L82 PathProgramCache]: Analyzing trace with hash -1367702887, now seen corresponding path program 2 times [2020-07-17 18:08:38,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 18:08:38,669 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004180610] [2020-07-17 18:08:38,671 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 18:08:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 18:08:38,781 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-07-17 18:08:38,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004180610] [2020-07-17 18:08:38,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 18:08:38,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 18:08:38,786 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043954035] [2020-07-17 18:08:38,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 18:08:38,789 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 18:08:38,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 18:08:38,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-07-17 18:08:38,789 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 6 states. [2020-07-17 18:08:38,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 18:08:38,858 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-07-17 18:08:38,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 18:08:38,859 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-07-17 18:08:38,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 18:08:38,859 INFO L225 Difference]: With dead ends: 67 [2020-07-17 18:08:38,859 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 18:08:38,861 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-17 18:08:38,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 18:08:38,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 18:08:38,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 18:08:38,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 18:08:38,862 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-07-17 18:08:38,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 18:08:38,862 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 18:08:38,862 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 18:08:38,862 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 18:08:38,863 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 18:08:38,863 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 18:08:38,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 18:08:39,456 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 37 DAG size of output: 29 [2020-07-17 18:08:40,176 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 33 [2020-07-17 18:08:40,356 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 18:08:40,356 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 18:08:40,357 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 18:08:40,357 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 18:08:40,357 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 18:08:40,357 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 18:08:40,357 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-17 18:08:40,357 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 18:08:40,357 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 18:08:40,358 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-17 18:08:40,358 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 18:08:40,358 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 39) the Hoare annotation is: (let ((.cse1 (<= 10000 main_~c3~0)) (.cse3 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0)) (.cse4 (<= 1 main_~i~0)) (.cse5 (<= main_~n~0 1)) (.cse0 (<= main_~n~0 main_~j~0))) (or (and (<= main_~i~0 0) (<= main_~n~0 0) .cse0) (and .cse1 (<= main_~n~0 (+ main_~j~0 1)) (<= 2000 main_~k~0) .cse2 .cse3 .cse4 .cse5) (and .cse1 .cse3 .cse2 (<= 1999 main_~k~0) .cse4 .cse5 .cse0))) [2020-07-17 18:08:40,358 INFO L271 CegarLoopResult]: At program point L35-3(lines 35 39) the Hoare annotation is: true [2020-07-17 18:08:40,358 INFO L264 CegarLoopResult]: At program point L27(lines 27 32) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= main_~n~0 1) (<= 1 main_~i~0)) [2020-07-17 18:08:40,359 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 41) the Hoare annotation is: true [2020-07-17 18:08:40,359 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 33) the Hoare annotation is: (or (and (<= 10000 main_~c3~0) (<= 2000 main_~k~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 1 main_~i~0)) (and (<= main_~i~0 0) (<= main_~n~0 0))) [2020-07-17 18:08:40,359 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,359 INFO L264 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,359 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,360 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (<= 4000 main_~c1~0) [2020-07-17 18:08:40,360 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= main_~n~0 (+ main_~j~0 1)) (<= 2000 main_~k~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 1 main_~i~0) (<= main_~n~0 1)) [2020-07-17 18:08:40,360 INFO L264 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= main_~n~0 (+ main_~j~0 1)) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= main_~n~0 1) (<= 1 main_~i~0)) [2020-07-17 18:08:40,360 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= main_~n~0 1) (<= 1 main_~i~0)) [2020-07-17 18:08:40,361 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= main_~n~0 1) (<= 1 main_~i~0)) [2020-07-17 18:08:40,361 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0))) [2020-07-17 18:08:40,361 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 0 |main_#t~post1|)) [2020-07-17 18:08:40,361 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 0 |main_#t~post1|) (<= 1 main_~i~0)) [2020-07-17 18:08:40,361 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,362 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-07-17 18:08:40,362 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,362 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= main_~n~0 (+ main_~j~0 1)) (<= 2000 main_~k~0) (<= main_~n~0 (+ |main_#t~post3| 1)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= main_~n~0 1) (<= 1 main_~i~0)) [2020-07-17 18:08:40,362 INFO L264 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~k~0) (<= main_~n~0 (+ |main_#t~post3| 1)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= main_~n~0 1) (<= 1 main_~i~0) (<= main_~n~0 main_~j~0)) [2020-07-17 18:08:40,362 INFO L264 CegarLoopResult]: At program point L29(lines 29 32) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= main_~n~0 1) (<= 1 main_~i~0)) [2020-07-17 18:08:40,363 INFO L264 CegarLoopResult]: At program point L29-2(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= 10000 main_~c3~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse2 (<= 2000 main_~c2~0))) (or (and (<= main_~i~0 0) .cse0 (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) .cse1 .cse2 (<= 2000 (+ main_~c2~0 main_~k~0))) (and .cse0 (<= 2000 main_~k~0) .cse1 .cse2 (<= 1 main_~i~0) (<= main_~n~0 1)))) [2020-07-17 18:08:40,363 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 1 main_~i~0)) [2020-07-17 18:08:40,363 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 1 main_~i~0)) [2020-07-17 18:08:40,363 INFO L264 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 1 main_~i~0)) [2020-07-17 18:08:40,364 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,364 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,364 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,364 INFO L271 CegarLoopResult]: At program point L13(lines 13 41) the Hoare annotation is: true [2020-07-17 18:08:40,364 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 41) the Hoare annotation is: true [2020-07-17 18:08:40,365 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= main_~n~0 1) (<= 1 main_~i~0) (<= main_~n~0 main_~j~0)) [2020-07-17 18:08:40,365 INFO L264 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 |main_#t~post4|) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= main_~n~0 main_~j~0)) [2020-07-17 18:08:40,365 INFO L264 CegarLoopResult]: At program point L38-2(line 38) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 2000 |main_#t~post4|) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 1999 main_~k~0) (<= 1 main_~i~0) (<= main_~n~0 1) (<= main_~n~0 main_~j~0)) [2020-07-17 18:08:40,365 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= main_~n~0 1) (<= 1 main_~i~0)) [2020-07-17 18:08:40,365 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 41) the Hoare annotation is: true [2020-07-17 18:08:40,366 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 4000 main_~c1~0) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 1 main_~i~0)) [2020-07-17 18:08:40,366 INFO L271 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-07-17 18:08:40,366 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 2000 (+ main_~c2~0 main_~k~0))) [2020-07-17 18:08:40,366 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,366 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,366 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (and (<= 10000 main_~c3~0) (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-07-17 18:08:40,367 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 18:08:40,367 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 18:08:40,367 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 18:08:40,367 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 18:08:40,367 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 18:08:40,367 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 18:08:40,368 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 18:08:40,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 06:08:40 BoogieIcfgContainer [2020-07-17 18:08:40,390 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 18:08:40,393 INFO L168 Benchmark]: Toolchain (without parser) took 5122.23 ms. Allocated memory was 135.8 MB in the beginning and 295.2 MB in the end (delta: 159.4 MB). Free memory was 100.6 MB in the beginning and 234.1 MB in the end (delta: -133.5 MB). Peak memory consumption was 131.6 MB. Max. memory is 7.1 GB. [2020-07-17 18:08:40,393 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 135.8 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 18:08:40,394 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.84 ms. Allocated memory is still 135.8 MB. Free memory was 100.2 MB in the beginning and 90.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-07-17 18:08:40,395 INFO L168 Benchmark]: Boogie Preprocessor took 116.38 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 178.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-17 18:08:40,396 INFO L168 Benchmark]: RCFGBuilder took 319.57 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 161.2 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. [2020-07-17 18:08:40,397 INFO L168 Benchmark]: TraceAbstraction took 4435.03 ms. Allocated memory was 199.8 MB in the beginning and 295.2 MB in the end (delta: 95.4 MB). Free memory was 161.2 MB in the beginning and 234.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 128.3 MB. Max. memory is 7.1 GB. [2020-07-17 18:08:40,400 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 135.8 MB. Free memory was 119.3 MB in the beginning and 119.0 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 244.84 ms. Allocated memory is still 135.8 MB. Free memory was 100.2 MB in the beginning and 90.5 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.38 ms. Allocated memory was 135.8 MB in the beginning and 199.8 MB in the end (delta: 64.0 MB). Free memory was 90.5 MB in the beginning and 178.1 MB in the end (delta: -87.6 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 319.57 ms. Allocated memory is still 199.8 MB. Free memory was 178.1 MB in the beginning and 161.2 MB in the end (delta: 16.9 MB). Peak memory consumption was 16.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4435.03 ms. Allocated memory was 199.8 MB in the beginning and 295.2 MB in the end (delta: 95.4 MB). Free memory was 161.2 MB in the beginning and 234.1 MB in the end (delta: -72.9 MB). Peak memory consumption was 128.3 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: 23]: Loop Invariant Derived loop invariant: (((((((i <= 0 && 10000 <= c3) && 10000 <= c3 + k) && 0 <= i) && 4000 <= c1 + k) && 4000 <= c1) && 2000 <= c2) && 2000 <= c2 + k) || (((((10000 <= c3 && 2000 <= k) && 4000 <= c1) && 2000 <= c2) && 1 <= i) && n <= 1) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((i <= 0 && n <= 0) && n <= j) || ((((((10000 <= c3 && n <= j + 1) && 2000 <= k) && 2000 <= c2) && 4000 <= c1) && 1 <= i) && n <= 1)) || ((((((10000 <= c3 && 4000 <= c1) && 2000 <= c2) && 1999 <= k) && 1 <= i) && n <= 1) && n <= 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, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.8s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 564 SDtfs, 481 SDslu, 1894 SDs, 0 SdLazy, 481 SolverSat, 76 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 133 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred 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, 10 MinimizatonAttempts, 125 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 55 LocationsWithAnnotation, 97 PreInvPairs, 130 NumberOfFragments, 838 HoareAnnotationTreeSize, 97 FomulaSimplifications, 4010 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 55 FomulaSimplificationsInter, 1153 FormulaSimplificationTreeSizeReductionInter, 1.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 425 NumberOfCodeBlocks, 425 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 415 ConstructedInterpolants, 0 QuantifiedInterpolants, 45031 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 3 PerfectInterpolantSequences, 37/50 InterpolantCoveringCapability, 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...