/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 0.1.25-72570d3 [2020-08-22 23:05:03,198 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:05:03,201 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:05:03,241 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:05:03,267 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:05:03,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:05:03,272 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:05:03,274 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:05:03,276 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:05:03,277 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:05:03,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:05:03,288 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:05:03,290 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:05:03,291 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:05:03,292 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:05:03,293 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:05:03,296 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:05:03,307 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:05:03,308 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:05:03,309 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:05:03,310 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:05:03,327 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:05:03,327 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:05:03,330 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:05:03,330 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:05:03,330 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:05:03,330 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:05:03,331 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:05:03,331 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:05:03,331 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:05:03,331 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:05:03,332 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:05:03,333 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:05:03,333 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:05:03,333 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:05:03,333 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:05:03,334 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:05:03,334 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:05:03,334 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:05:03,334 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:05:03,334 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:05:03,335 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:05:03,335 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:05:03,335 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 [2020-08-22 23:05:03,642 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:05:03,655 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:05:03,661 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:05:03,663 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:05:03,663 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:05:03,664 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/large_const.i [2020-08-22 23:05:03,738 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73331e5fe/a703eebb13c2433a9e93563845529e83/FLAG58168157c [2020-08-22 23:05:04,249 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:05:04,250 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/large_const.i [2020-08-22 23:05:04,258 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73331e5fe/a703eebb13c2433a9e93563845529e83/FLAG58168157c [2020-08-22 23:05:04,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/73331e5fe/a703eebb13c2433a9e93563845529e83 [2020-08-22 23:05:04,624 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:05:04,626 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:05:04,627 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:04,628 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:05:04,631 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:05:04,632 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@54e109a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04, skipping insertion in model container [2020-08-22 23:05:04,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,644 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:05:04,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:05:04,827 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:04,832 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:05:04,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:04,866 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:05:04,867 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04 WrapperNode [2020-08-22 23:05:04,867 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:04,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:05:04,868 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:05:04,868 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:05:04,878 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,963 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,970 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,975 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,977 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (1/1) ... [2020-08-22 23:05:04,979 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:05:04,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:05:04,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:05:04,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:05:04,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (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 [2020-08-22 23:05:05,052 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:05:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:05:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:05:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:05:05,053 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:05:05,053 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:05:05,053 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:05:05,054 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:05:05,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:05:05,055 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:05:05,055 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:05:05,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:05:05,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:05:05,301 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:05:05,301 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-08-22 23:05:05,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:05 BoogieIcfgContainer [2020-08-22 23:05:05,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:05:05,308 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:05:05,308 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:05:05,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:05:05,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:05:04" (1/3) ... [2020-08-22 23:05:05,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771404cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:05, skipping insertion in model container [2020-08-22 23:05:05,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:04" (2/3) ... [2020-08-22 23:05:05,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@771404cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:05, skipping insertion in model container [2020-08-22 23:05:05,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:05" (3/3) ... [2020-08-22 23:05:05,316 INFO L109 eAbstractionObserver]: Analyzing ICFG large_const.i [2020-08-22 23:05:05,332 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:05:05,348 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:05:05,381 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:05:05,420 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:05:05,420 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:05:05,421 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:05:05,421 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:05:05,421 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:05:05,421 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:05:05,421 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:05:05,422 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:05:05,439 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2020-08-22 23:05:05,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 23:05:05,451 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:05,452 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] [2020-08-22 23:05:05,452 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:05,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:05,459 INFO L82 PathProgramCache]: Analyzing trace with hash 288343897, now seen corresponding path program 1 times [2020-08-22 23:05:05,468 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:05,469 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1035808600] [2020-08-22 23:05:05,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:05,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:05,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:05,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:05,615 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1035808600] [2020-08-22 23:05:05,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:05,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 23:05:05,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128014872] [2020-08-22 23:05:05,625 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 23:05:05,625 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:05,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 23:05:05,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 23:05:05,643 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2020-08-22 23:05:05,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:05,677 INFO L93 Difference]: Finished difference Result 75 states and 86 transitions. [2020-08-22 23:05:05,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 23:05:05,679 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 27 [2020-08-22 23:05:05,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:05,690 INFO L225 Difference]: With dead ends: 75 [2020-08-22 23:05:05,690 INFO L226 Difference]: Without dead ends: 48 [2020-08-22 23:05:05,695 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 [2020-08-22 23:05:05,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-22 23:05:05,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-08-22 23:05:05,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-08-22 23:05:05,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-08-22 23:05:05,747 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 27 [2020-08-22 23:05:05,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:05,747 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-08-22 23:05:05,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 23:05:05,748 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-08-22 23:05:05,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-22 23:05:05,749 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:05,750 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] [2020-08-22 23:05:05,750 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:05:05,751 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:05,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:05,751 INFO L82 PathProgramCache]: Analyzing trace with hash 320540924, now seen corresponding path program 1 times [2020-08-22 23:05:05,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:05,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1829826981] [2020-08-22 23:05:05,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:05,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:05,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:05,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:05,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:05,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1829826981] [2020-08-22 23:05:05,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:05,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 23:05:05,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708754241] [2020-08-22 23:05:05,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 23:05:05,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:05,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 23:05:05,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 23:05:05,848 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 5 states. [2020-08-22 23:05:05,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:05,961 INFO L93 Difference]: Finished difference Result 67 states and 71 transitions. [2020-08-22 23:05:05,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 23:05:05,962 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-08-22 23:05:05,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:05,964 INFO L225 Difference]: With dead ends: 67 [2020-08-22 23:05:05,964 INFO L226 Difference]: Without dead ends: 51 [2020-08-22 23:05:05,965 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 [2020-08-22 23:05:05,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-08-22 23:05:05,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-08-22 23:05:05,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-22 23:05:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 52 transitions. [2020-08-22 23:05:05,977 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 52 transitions. Word has length 27 [2020-08-22 23:05:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:05,978 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 52 transitions. [2020-08-22 23:05:05,978 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 23:05:05,978 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 52 transitions. [2020-08-22 23:05:05,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-22 23:05:05,980 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:05,980 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] [2020-08-22 23:05:05,980 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:05:05,981 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:05,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:05,981 INFO L82 PathProgramCache]: Analyzing trace with hash 751787059, now seen corresponding path program 1 times [2020-08-22 23:05:05,982 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:05,982 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550857082] [2020-08-22 23:05:05,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:06,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:06,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:06,139 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:06,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550857082] [2020-08-22 23:05:06,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:06,140 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 23:05:06,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945215725] [2020-08-22 23:05:06,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:05:06,141 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:06,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:05:06,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:05:06,142 INFO L87 Difference]: Start difference. First operand 49 states and 52 transitions. Second operand 7 states. [2020-08-22 23:05:06,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:06,287 INFO L93 Difference]: Finished difference Result 88 states and 96 transitions. [2020-08-22 23:05:06,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:05:06,288 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 37 [2020-08-22 23:05:06,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:06,290 INFO L225 Difference]: With dead ends: 88 [2020-08-22 23:05:06,290 INFO L226 Difference]: Without dead ends: 86 [2020-08-22 23:05:06,291 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 [2020-08-22 23:05:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-08-22 23:05:06,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-08-22 23:05:06,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-08-22 23:05:06,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 71 transitions. [2020-08-22 23:05:06,311 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 71 transitions. Word has length 37 [2020-08-22 23:05:06,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:06,312 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 71 transitions. [2020-08-22 23:05:06,312 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:05:06,312 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 71 transitions. [2020-08-22 23:05:06,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 23:05:06,314 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:06,314 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] [2020-08-22 23:05:06,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:05:06,315 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:06,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:06,315 INFO L82 PathProgramCache]: Analyzing trace with hash 3796503, now seen corresponding path program 1 times [2020-08-22 23:05:06,316 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:06,316 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [251108076] [2020-08-22 23:05:06,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:06,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:06,428 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:06,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [251108076] [2020-08-22 23:05:06,429 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:06,441 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 23:05:06,442 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342391024] [2020-08-22 23:05:06,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:05:06,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:06,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:05:06,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:05:06,445 INFO L87 Difference]: Start difference. First operand 66 states and 71 transitions. Second operand 7 states. [2020-08-22 23:05:06,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:06,603 INFO L93 Difference]: Finished difference Result 105 states and 115 transitions. [2020-08-22 23:05:06,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:05:06,604 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-22 23:05:06,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:06,608 INFO L225 Difference]: With dead ends: 105 [2020-08-22 23:05:06,609 INFO L226 Difference]: Without dead ends: 103 [2020-08-22 23:05:06,610 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 [2020-08-22 23:05:06,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-22 23:05:06,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 85. [2020-08-22 23:05:06,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 23:05:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-08-22 23:05:06,629 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 38 [2020-08-22 23:05:06,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:06,630 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-08-22 23:05:06,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:05:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-08-22 23:05:06,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 23:05:06,632 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:06,632 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] [2020-08-22 23:05:06,632 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 23:05:06,633 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:06,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:06,633 INFO L82 PathProgramCache]: Analyzing trace with hash 197728887, now seen corresponding path program 1 times [2020-08-22 23:05:06,633 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:06,634 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [281588767] [2020-08-22 23:05:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:06,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:06,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:06,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [281588767] [2020-08-22 23:05:06,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:06,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-22 23:05:06,727 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586857024] [2020-08-22 23:05:06,728 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 23:05:06,728 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:06,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 23:05:06,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 23:05:06,730 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 7 states. [2020-08-22 23:05:06,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:06,864 INFO L93 Difference]: Finished difference Result 116 states and 129 transitions. [2020-08-22 23:05:06,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 23:05:06,865 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-08-22 23:05:06,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:06,866 INFO L225 Difference]: With dead ends: 116 [2020-08-22 23:05:06,867 INFO L226 Difference]: Without dead ends: 114 [2020-08-22 23:05:06,867 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 [2020-08-22 23:05:06,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-08-22 23:05:06,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 97. [2020-08-22 23:05:06,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-08-22 23:05:06,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 110 transitions. [2020-08-22 23:05:06,903 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 110 transitions. Word has length 38 [2020-08-22 23:05:06,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:06,903 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 110 transitions. [2020-08-22 23:05:06,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 23:05:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 110 transitions. [2020-08-22 23:05:06,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-08-22 23:05:06,909 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:06,909 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] [2020-08-22 23:05:06,910 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 23:05:06,914 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:06,915 INFO L82 PathProgramCache]: Analyzing trace with hash 88652198, now seen corresponding path program 1 times [2020-08-22 23:05:06,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:06,916 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825762444] [2020-08-22 23:05:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:06,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 23:05:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:07,084 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825762444] [2020-08-22 23:05:07,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:07,084 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 23:05:07,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684149112] [2020-08-22 23:05:07,085 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:05:07,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:07,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:05:07,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:05:07,086 INFO L87 Difference]: Start difference. First operand 97 states and 110 transitions. Second operand 9 states. [2020-08-22 23:05:07,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:07,277 INFO L93 Difference]: Finished difference Result 129 states and 143 transitions. [2020-08-22 23:05:07,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 23:05:07,277 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-08-22 23:05:07,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:07,279 INFO L225 Difference]: With dead ends: 129 [2020-08-22 23:05:07,280 INFO L226 Difference]: Without dead ends: 127 [2020-08-22 23:05:07,280 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 [2020-08-22 23:05:07,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-08-22 23:05:07,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 110. [2020-08-22 23:05:07,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-08-22 23:05:07,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2020-08-22 23:05:07,304 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 49 [2020-08-22 23:05:07,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:07,304 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2020-08-22 23:05:07,304 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:05:07,304 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2020-08-22 23:05:07,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 23:05:07,306 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:07,306 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] [2020-08-22 23:05:07,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 23:05:07,307 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:07,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:07,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1084443264, now seen corresponding path program 1 times [2020-08-22 23:05:07,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:07,310 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1922596363] [2020-08-22 23:05:07,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:07,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,363 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:07,364 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1922596363] [2020-08-22 23:05:07,364 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:07,364 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-22 23:05:07,365 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275351373] [2020-08-22 23:05:07,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 23:05:07,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:07,366 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 23:05:07,366 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:05:07,366 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand 6 states. [2020-08-22 23:05:07,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:07,429 INFO L93 Difference]: Finished difference Result 150 states and 166 transitions. [2020-08-22 23:05:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 23:05:07,430 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 48 [2020-08-22 23:05:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:07,432 INFO L225 Difference]: With dead ends: 150 [2020-08-22 23:05:07,432 INFO L226 Difference]: Without dead ends: 70 [2020-08-22 23:05:07,433 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 [2020-08-22 23:05:07,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-08-22 23:05:07,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-08-22 23:05:07,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 23:05:07,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-08-22 23:05:07,448 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 48 [2020-08-22 23:05:07,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:07,449 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-08-22 23:05:07,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 23:05:07,449 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-08-22 23:05:07,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 23:05:07,450 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:07,451 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] [2020-08-22 23:05:07,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 23:05:07,451 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:07,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:07,452 INFO L82 PathProgramCache]: Analyzing trace with hash -1391225462, now seen corresponding path program 1 times [2020-08-22 23:05:07,452 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:07,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [295863454] [2020-08-22 23:05:07,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:07,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:07,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,569 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:07,570 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [295863454] [2020-08-22 23:05:07,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:07,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 23:05:07,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099737089] [2020-08-22 23:05:07,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:05:07,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:07,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:05:07,572 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:05:07,573 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 9 states. [2020-08-22 23:05:07,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:07,737 INFO L93 Difference]: Finished difference Result 96 states and 98 transitions. [2020-08-22 23:05:07,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 23:05:07,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-08-22 23:05:07,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:07,739 INFO L225 Difference]: With dead ends: 96 [2020-08-22 23:05:07,740 INFO L226 Difference]: Without dead ends: 94 [2020-08-22 23:05:07,740 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 [2020-08-22 23:05:07,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-08-22 23:05:07,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 69. [2020-08-22 23:05:07,752 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-08-22 23:05:07,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 71 transitions. [2020-08-22 23:05:07,753 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 71 transitions. Word has length 50 [2020-08-22 23:05:07,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:07,753 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 71 transitions. [2020-08-22 23:05:07,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:05:07,754 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 71 transitions. [2020-08-22 23:05:07,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 23:05:07,754 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:07,755 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] [2020-08-22 23:05:07,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 23:05:07,755 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:07,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:07,756 INFO L82 PathProgramCache]: Analyzing trace with hash -798805526, now seen corresponding path program 1 times [2020-08-22 23:05:07,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:07,756 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1217541095] [2020-08-22 23:05:07,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:07,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-08-22 23:05:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:07,837 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:07,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1217541095] [2020-08-22 23:05:07,838 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:07,838 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-22 23:05:07,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [405906254] [2020-08-22 23:05:07,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:05:07,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:07,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:05:07,839 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:05:07,840 INFO L87 Difference]: Start difference. First operand 69 states and 71 transitions. Second operand 9 states. [2020-08-22 23:05:08,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:08,004 INFO L93 Difference]: Finished difference Result 94 states and 96 transitions. [2020-08-22 23:05:08,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 23:05:08,004 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 50 [2020-08-22 23:05:08,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:08,006 INFO L225 Difference]: With dead ends: 94 [2020-08-22 23:05:08,006 INFO L226 Difference]: Without dead ends: 92 [2020-08-22 23:05:08,007 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 [2020-08-22 23:05:08,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-08-22 23:05:08,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-08-22 23:05:08,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-08-22 23:05:08,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 69 transitions. [2020-08-22 23:05:08,018 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 69 transitions. Word has length 50 [2020-08-22 23:05:08,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:08,019 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 69 transitions. [2020-08-22 23:05:08,019 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:05:08,019 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 69 transitions. [2020-08-22 23:05:08,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-08-22 23:05:08,020 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:08,020 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] [2020-08-22 23:05:08,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 23:05:08,021 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:08,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:08,021 INFO L82 PathProgramCache]: Analyzing trace with hash -1367702887, now seen corresponding path program 2 times [2020-08-22 23:05:08,022 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:08,022 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891135598] [2020-08-22 23:05:08,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:08,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:08,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:08,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:08,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-08-22 23:05:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:08,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-08-22 23:05:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-08-22 23:05:08,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891135598] [2020-08-22 23:05:08,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:08,082 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 23:05:08,082 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399662653] [2020-08-22 23:05:08,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 23:05:08,083 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:08,083 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 23:05:08,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-22 23:05:08,084 INFO L87 Difference]: Start difference. First operand 67 states and 69 transitions. Second operand 6 states. [2020-08-22 23:05:08,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:08,150 INFO L93 Difference]: Finished difference Result 67 states and 69 transitions. [2020-08-22 23:05:08,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 23:05:08,150 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-08-22 23:05:08,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:08,151 INFO L225 Difference]: With dead ends: 67 [2020-08-22 23:05:08,151 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:05:08,152 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 [2020-08-22 23:05:08,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:05:08,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:05:08,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:05:08,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:05:08,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 61 [2020-08-22 23:05:08,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:08,153 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:05:08,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 23:05:08,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:05:08,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:05:08,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 23:05:08,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:05:09,323 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 34 [2020-08-22 23:05:09,461 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:09,461 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:09,461 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:09,461 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:05:09,462 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:05:09,462 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:09,462 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:09,462 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:09,462 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 23:05:09,462 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 23:05:09,462 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:09,463 INFO L264 CegarLoopResult]: At program point L35-2(lines 35 39) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 main_~j~0)) (.cse1 (<= 4000 main_~c1~0)) (.cse3 (<= main_~n~0 1)) (.cse2 (<= 2000 main_~c2~0)) (.cse4 (<= 10000 main_~c3~0))) (or (and .cse0 .cse1 (<= 1999 main_~k~0) (<= main_~n~0 main_~i~0) .cse2 .cse3 .cse4) (and .cse0 (<= main_~i~0 0) (<= main_~n~0 0)) (and .cse1 (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= main_~n~0 (+ main_~j~0 1)) .cse3 .cse2 .cse4))) [2020-08-22 23:05:09,463 INFO L271 CegarLoopResult]: At program point L35-3(lines 35 39) the Hoare annotation is: true [2020-08-22 23:05:09,463 INFO L264 CegarLoopResult]: At program point L27(lines 27 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,463 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 41) the Hoare annotation is: true [2020-08-22 23:05:09,464 INFO L264 CegarLoopResult]: At program point L23-2(lines 23 33) the Hoare annotation is: (or (and (<= main_~i~0 0) (<= main_~n~0 0)) (and (<= 4000 main_~c1~0) (<= 2000 main_~k~0) (<= main_~n~0 main_~i~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0))) [2020-08-22 23:05:09,464 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,464 INFO L264 CegarLoopResult]: At program point L19-1(line 19) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,464 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,464 INFO L264 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: (<= 4000 main_~c1~0) [2020-08-22 23:05:09,464 INFO L264 CegarLoopResult]: At program point L36(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= main_~n~0 (+ main_~j~0 1)) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,465 INFO L264 CegarLoopResult]: At program point L36-1(line 36) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 (+ main_~j~0 1)) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,465 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,465 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,465 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,466 INFO L264 CegarLoopResult]: At program point L24-1(line 24) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0) (<= 0 |main_#t~post1|)) [2020-08-22 23:05:09,466 INFO L264 CegarLoopResult]: At program point L24-2(line 24) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0) (<= 0 |main_#t~post1|)) [2020-08-22 23:05:09,466 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,466 INFO L271 CegarLoopResult]: At program point L20-1(line 20) the Hoare annotation is: true [2020-08-22 23:05:09,466 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0)) [2020-08-22 23:05:09,466 INFO L264 CegarLoopResult]: At program point L37(line 37) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 (+ main_~j~0 1)) (<= main_~n~0 (+ |main_#t~post3| 1)) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,467 INFO L264 CegarLoopResult]: At program point L37-1(line 37) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 (+ |main_#t~post3| 1)) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,467 INFO L264 CegarLoopResult]: At program point L29(lines 29 32) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,467 INFO L264 CegarLoopResult]: At program point L29-2(lines 23 33) the Hoare annotation is: (let ((.cse0 (<= 4000 main_~c1~0)) (.cse1 (<= 2000 main_~c2~0)) (.cse2 (<= 10000 main_~c3~0))) (or (and .cse0 (<= main_~i~0 0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 0 main_~i~0) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) .cse1 .cse2) (and .cse0 (<= 1 main_~i~0) (<= 2000 main_~k~0) .cse1 (<= main_~n~0 1) .cse2))) [2020-08-22 23:05:09,467 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,468 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,468 INFO L264 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,468 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,468 INFO L264 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,468 INFO L264 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,468 INFO L271 CegarLoopResult]: At program point L13(lines 13 41) the Hoare annotation is: true [2020-08-22 23:05:09,469 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 41) the Hoare annotation is: true [2020-08-22 23:05:09,469 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,469 INFO L264 CegarLoopResult]: At program point L38-1(line 38) the Hoare annotation is: (and (<= main_~n~0 main_~j~0) (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 2000 main_~k~0) (<= 2000 |main_#t~post4|) (<= main_~n~0 1) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,469 INFO L264 CegarLoopResult]: At program point L38-2(line 38) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= main_~n~0 main_~j~0) (<= 1 main_~i~0) (<= 1999 main_~k~0) (<= 2000 |main_#t~post4|) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,469 INFO L264 CegarLoopResult]: At program point L30(line 30) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= main_~n~0 1) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,469 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 41) the Hoare annotation is: true [2020-08-22 23:05:09,470 INFO L264 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 1 main_~i~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,470 INFO L271 CegarLoopResult]: At program point L26-1(line 26) the Hoare annotation is: true [2020-08-22 23:05:09,470 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 10000 (+ main_~c3~0 main_~k~0)) (<= 4000 (+ main_~c1~0 main_~k~0)) (<= 2000 (+ main_~c2~0 main_~k~0)) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,470 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,470 INFO L264 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,470 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (and (<= 4000 main_~c1~0) (<= 2000 main_~c2~0) (<= 10000 main_~c3~0)) [2020-08-22 23:05:09,471 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 23:05:09,471 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 23:05:09,471 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:05:09,471 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:05:09,471 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:05:09,471 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:05:09,472 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:05:09,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:05:09 BoogieIcfgContainer [2020-08-22 23:05:09,495 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:05:09,497 INFO L168 Benchmark]: Toolchain (without parser) took 4871.33 ms. Allocated memory was 139.5 MB in the beginning and 278.4 MB in the end (delta: 138.9 MB). Free memory was 103.4 MB in the beginning and 181.4 MB in the end (delta: -78.0 MB). Peak memory consumption was 111.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:09,498 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 23:05:09,499 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.48 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:09,500 INFO L168 Benchmark]: Boogie Preprocessor took 110.74 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 181.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:09,501 INFO L168 Benchmark]: RCFGBuilder took 327.63 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 164.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:09,502 INFO L168 Benchmark]: TraceAbstraction took 4187.14 ms. Allocated memory was 202.9 MB in the beginning and 278.4 MB in the end (delta: 75.5 MB). Free memory was 163.7 MB in the beginning and 181.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 108.2 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:09,506 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 240.48 ms. Allocated memory is still 139.5 MB. Free memory was 103.2 MB in the beginning and 93.1 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.74 ms. Allocated memory was 139.5 MB in the beginning and 202.9 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 181.0 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 327.63 ms. Allocated memory is still 202.9 MB. Free memory was 181.0 MB in the beginning and 164.3 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4187.14 ms. Allocated memory was 202.9 MB in the beginning and 278.4 MB in the end (delta: 75.5 MB). Free memory was 163.7 MB in the beginning and 181.4 MB in the end (delta: -17.7 MB). Peak memory consumption was 108.2 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: (((((((4000 <= c1 && i <= 0) && 10000 <= c3 + k) && 0 <= i) && 4000 <= c1 + k) && 2000 <= c2 + k) && 2000 <= c2) && 10000 <= c3) || (((((4000 <= c1 && 1 <= i) && 2000 <= k) && 2000 <= c2) && n <= 1) && 10000 <= c3) - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: (((((((n <= j && 4000 <= c1) && 1999 <= k) && n <= i) && 2000 <= c2) && n <= 1) && 10000 <= c3) || ((n <= j && i <= 0) && n <= 0)) || ((((((4000 <= c1 && 1 <= i) && 2000 <= k) && n <= j + 1) && n <= 1) && 2000 <= c2) && 10000 <= c3) - 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: \old(cond) == 0 || !(cond == 0) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 60 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 10, TraceHistogramMax: 3, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.3s, 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, 4365 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 55 FomulaSimplificationsInter, 798 FormulaSimplificationTreeSizeReductionInter, 1.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s 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...