/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/psyco/psyco_security.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 22:53:10,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 22:53:10,112 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 22:53:10,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 22:53:10,154 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 22:53:10,162 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 22:53:10,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 22:53:10,169 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 22:53:10,172 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 22:53:10,174 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 22:53:10,175 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 22:53:10,176 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 22:53:10,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 22:53:10,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 22:53:10,182 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 22:53:10,183 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 22:53:10,185 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 22:53:10,186 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 22:53:10,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 22:53:10,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 22:53:10,198 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 22:53:10,198 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 22:53:10,199 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 22:53:10,200 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 22:53:10,212 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 22:53:10,231 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 22:53:10,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 22:53:10,232 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 22:53:10,234 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 22:53:10,251 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 22:53:10,252 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 22:53:10,254 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 22:53:10,254 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 22:53:10,255 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 22:53:10,255 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 22:53:10,255 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 22:53:10,256 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 22:53:10,256 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 22:53:10,256 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 22:53:10,257 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 22:53:10,257 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 22:53:10,258 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 22:53:10,258 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 22:53:10,258 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 22:53:10,258 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 22:53:10,259 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 22:53:10,259 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 22:53:10,259 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 22:53:10,259 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 22:53:10,259 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 22:53:10,260 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 22:53:10,260 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 22:53:10,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 22:53:10,585 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 22:53:10,588 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 22:53:10,590 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 22:53:10,590 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 22:53:10,591 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_security.c [2020-08-22 22:53:10,653 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358016a5a/d5a2170624c146668535dd3bb5299835/FLAG01e62e70b [2020-08-22 22:53:11,109 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 22:53:11,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/psyco/psyco_security.c [2020-08-22 22:53:11,120 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358016a5a/d5a2170624c146668535dd3bb5299835/FLAG01e62e70b [2020-08-22 22:53:11,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/358016a5a/d5a2170624c146668535dd3bb5299835 [2020-08-22 22:53:11,452 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 22:53:11,454 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 22:53:11,455 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 22:53:11,455 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 22:53:11,460 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 22:53:11,461 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,464 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45307d77 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11, skipping insertion in model container [2020-08-22 22:53:11,465 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 22:53:11,516 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 22:53:11,712 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:53:11,724 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 22:53:11,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 22:53:11,870 INFO L208 MainTranslator]: Completed translation [2020-08-22 22:53:11,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11 WrapperNode [2020-08-22 22:53:11,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 22:53:11,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 22:53:11,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 22:53:11,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 22:53:11,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,887 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,894 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,895 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,903 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,916 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (1/1) ... [2020-08-22 22:53:11,920 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 22:53:11,920 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 22:53:11,920 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 22:53:11,921 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 22:53:11,922 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (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 22:53:11,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 22:53:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 22:53:11,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 22:53:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 22:53:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 22:53:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 22:53:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 22:53:11,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 22:53:12,596 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 22:53:12,597 INFO L295 CfgBuilder]: Removed 18 assume(true) statements. [2020-08-22 22:53:12,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:53:12 BoogieIcfgContainer [2020-08-22 22:53:12,604 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 22:53:12,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 22:53:12,606 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 22:53:12,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 22:53:12,610 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 10:53:11" (1/3) ... [2020-08-22 22:53:12,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb282d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:53:12, skipping insertion in model container [2020-08-22 22:53:12,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 10:53:11" (2/3) ... [2020-08-22 22:53:12,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7bb282d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 10:53:12, skipping insertion in model container [2020-08-22 22:53:12,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 10:53:12" (3/3) ... [2020-08-22 22:53:12,614 INFO L109 eAbstractionObserver]: Analyzing ICFG psyco_security.c [2020-08-22 22:53:12,625 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 22:53:12,633 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 22:53:12,648 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 22:53:12,673 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 22:53:12,673 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 22:53:12,673 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 22:53:12,674 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 22:53:12,674 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 22:53:12,674 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 22:53:12,674 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 22:53:12,675 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 22:53:12,696 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states. [2020-08-22 22:53:12,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 22:53:12,709 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:12,714 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] [2020-08-22 22:53:12,714 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:12,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:12,722 INFO L82 PathProgramCache]: Analyzing trace with hash -1507146259, now seen corresponding path program 1 times [2020-08-22 22:53:12,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:12,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514712261] [2020-08-22 22:53:12,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:12,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:12,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:12,950 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 22:53:12,951 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514712261] [2020-08-22 22:53:12,957 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:12,957 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 22:53:12,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660705446] [2020-08-22 22:53:12,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 22:53:12,971 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:12,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 22:53:12,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:53:12,990 INFO L87 Difference]: Start difference. First operand 191 states. Second operand 3 states. [2020-08-22 22:53:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:13,219 INFO L93 Difference]: Finished difference Result 369 states and 507 transitions. [2020-08-22 22:53:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 22:53:13,222 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 22:53:13,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:13,237 INFO L225 Difference]: With dead ends: 369 [2020-08-22 22:53:13,238 INFO L226 Difference]: Without dead ends: 178 [2020-08-22 22:53:13,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 22:53:13,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-08-22 22:53:13,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-08-22 22:53:13,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-08-22 22:53:13,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 213 transitions. [2020-08-22 22:53:13,331 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 213 transitions. Word has length 22 [2020-08-22 22:53:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:13,331 INFO L479 AbstractCegarLoop]: Abstraction has 178 states and 213 transitions. [2020-08-22 22:53:13,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 22:53:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 213 transitions. [2020-08-22 22:53:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 22:53:13,333 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:13,334 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] [2020-08-22 22:53:13,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 22:53:13,334 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:13,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:13,335 INFO L82 PathProgramCache]: Analyzing trace with hash -946920198, now seen corresponding path program 1 times [2020-08-22 22:53:13,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:13,336 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [88253848] [2020-08-22 22:53:13,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:13,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:13,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:13,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:13,420 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 22:53:13,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [88253848] [2020-08-22 22:53:13,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:13,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:13,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902991545] [2020-08-22 22:53:13,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:13,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:13,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:13,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:13,425 INFO L87 Difference]: Start difference. First operand 178 states and 213 transitions. Second operand 4 states. [2020-08-22 22:53:13,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:13,883 INFO L93 Difference]: Finished difference Result 346 states and 417 transitions. [2020-08-22 22:53:13,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:13,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-08-22 22:53:13,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:13,886 INFO L225 Difference]: With dead ends: 346 [2020-08-22 22:53:13,886 INFO L226 Difference]: Without dead ends: 181 [2020-08-22 22:53:13,889 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:13,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-08-22 22:53:13,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 181. [2020-08-22 22:53:13,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 181 states. [2020-08-22 22:53:13,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 216 transitions. [2020-08-22 22:53:13,920 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 216 transitions. Word has length 23 [2020-08-22 22:53:13,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:13,920 INFO L479 AbstractCegarLoop]: Abstraction has 181 states and 216 transitions. [2020-08-22 22:53:13,921 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:13,921 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 216 transitions. [2020-08-22 22:53:13,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-22 22:53:13,922 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:13,922 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:13,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 22:53:13,923 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:13,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:13,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1840173547, now seen corresponding path program 1 times [2020-08-22 22:53:13,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:13,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400356430] [2020-08-22 22:53:13,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:13,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:13,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:13,987 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:53:13,987 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400356430] [2020-08-22 22:53:13,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:13,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:13,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896648692] [2020-08-22 22:53:13,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:13,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:13,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:13,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:13,990 INFO L87 Difference]: Start difference. First operand 181 states and 216 transitions. Second operand 4 states. [2020-08-22 22:53:14,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:14,111 INFO L93 Difference]: Finished difference Result 330 states and 397 transitions. [2020-08-22 22:53:14,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:14,111 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-08-22 22:53:14,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:14,114 INFO L225 Difference]: With dead ends: 330 [2020-08-22 22:53:14,114 INFO L226 Difference]: Without dead ends: 163 [2020-08-22 22:53:14,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:14,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-08-22 22:53:14,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 163. [2020-08-22 22:53:14,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-08-22 22:53:14,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 193 transitions. [2020-08-22 22:53:14,148 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 193 transitions. Word has length 32 [2020-08-22 22:53:14,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:14,149 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 193 transitions. [2020-08-22 22:53:14,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:14,149 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 193 transitions. [2020-08-22 22:53:14,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-08-22 22:53:14,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:14,151 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:14,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 22:53:14,152 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:14,152 INFO L82 PathProgramCache]: Analyzing trace with hash 576498569, now seen corresponding path program 1 times [2020-08-22 22:53:14,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:14,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127570528] [2020-08-22 22:53:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:14,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:14,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:14,223 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:53:14,224 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127570528] [2020-08-22 22:53:14,224 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:14,225 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:14,225 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710326003] [2020-08-22 22:53:14,225 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:14,226 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:14,226 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:14,226 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:14,227 INFO L87 Difference]: Start difference. First operand 163 states and 193 transitions. Second operand 4 states. [2020-08-22 22:53:14,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:14,645 INFO L93 Difference]: Finished difference Result 429 states and 517 transitions. [2020-08-22 22:53:14,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:14,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 39 [2020-08-22 22:53:14,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:14,648 INFO L225 Difference]: With dead ends: 429 [2020-08-22 22:53:14,648 INFO L226 Difference]: Without dead ends: 275 [2020-08-22 22:53:14,649 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:14,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-08-22 22:53:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 243. [2020-08-22 22:53:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 243 states. [2020-08-22 22:53:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243 states to 243 states and 288 transitions. [2020-08-22 22:53:14,683 INFO L78 Accepts]: Start accepts. Automaton has 243 states and 288 transitions. Word has length 39 [2020-08-22 22:53:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:14,683 INFO L479 AbstractCegarLoop]: Abstraction has 243 states and 288 transitions. [2020-08-22 22:53:14,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 243 states and 288 transitions. [2020-08-22 22:53:14,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-22 22:53:14,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:14,686 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:14,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 22:53:14,686 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:14,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:14,687 INFO L82 PathProgramCache]: Analyzing trace with hash -47890514, now seen corresponding path program 1 times [2020-08-22 22:53:14,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:14,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787047013] [2020-08-22 22:53:14,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:14,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:14,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 22:53:14,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787047013] [2020-08-22 22:53:14,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:14,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:14,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029104374] [2020-08-22 22:53:14,737 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:14,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:14,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:14,738 INFO L87 Difference]: Start difference. First operand 243 states and 288 transitions. Second operand 4 states. [2020-08-22 22:53:15,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:15,047 INFO L93 Difference]: Finished difference Result 407 states and 484 transitions. [2020-08-22 22:53:15,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:15,047 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2020-08-22 22:53:15,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:15,049 INFO L225 Difference]: With dead ends: 407 [2020-08-22 22:53:15,049 INFO L226 Difference]: Without dead ends: 188 [2020-08-22 22:53:15,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:15,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-08-22 22:53:15,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 186. [2020-08-22 22:53:15,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-08-22 22:53:15,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 218 transitions. [2020-08-22 22:53:15,074 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 218 transitions. Word has length 40 [2020-08-22 22:53:15,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:15,076 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 218 transitions. [2020-08-22 22:53:15,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:15,077 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 218 transitions. [2020-08-22 22:53:15,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-08-22 22:53:15,088 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:15,088 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:15,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 22:53:15,089 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:15,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:15,089 INFO L82 PathProgramCache]: Analyzing trace with hash 946604760, now seen corresponding path program 1 times [2020-08-22 22:53:15,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:15,090 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [7126707] [2020-08-22 22:53:15,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:15,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:15,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:15,189 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:53:15,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [7126707] [2020-08-22 22:53:15,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:15,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:15,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044118182] [2020-08-22 22:53:15,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:15,192 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:15,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:15,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:15,193 INFO L87 Difference]: Start difference. First operand 186 states and 218 transitions. Second operand 4 states. [2020-08-22 22:53:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:15,335 INFO L93 Difference]: Finished difference Result 301 states and 357 transitions. [2020-08-22 22:53:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:15,335 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-08-22 22:53:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:15,338 INFO L225 Difference]: With dead ends: 301 [2020-08-22 22:53:15,338 INFO L226 Difference]: Without dead ends: 158 [2020-08-22 22:53:15,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:15,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-08-22 22:53:15,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-08-22 22:53:15,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-08-22 22:53:15,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 184 transitions. [2020-08-22 22:53:15,359 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 184 transitions. Word has length 50 [2020-08-22 22:53:15,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:15,360 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 184 transitions. [2020-08-22 22:53:15,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:15,361 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 184 transitions. [2020-08-22 22:53:15,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 22:53:15,366 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:15,367 INFO L422 BasicCegarLoop]: trace histogram [3, 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 22:53:15,367 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-22 22:53:15,368 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:15,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1459500481, now seen corresponding path program 1 times [2020-08-22 22:53:15,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:15,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1030432673] [2020-08-22 22:53:15,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:15,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:15,429 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:53:15,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1030432673] [2020-08-22 22:53:15,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:15,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:15,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322686880] [2020-08-22 22:53:15,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:15,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:15,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:15,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:15,432 INFO L87 Difference]: Start difference. First operand 158 states and 184 transitions. Second operand 4 states. [2020-08-22 22:53:15,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:15,851 INFO L93 Difference]: Finished difference Result 356 states and 426 transitions. [2020-08-22 22:53:15,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:15,852 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 51 [2020-08-22 22:53:15,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:15,854 INFO L225 Difference]: With dead ends: 356 [2020-08-22 22:53:15,854 INFO L226 Difference]: Without dead ends: 248 [2020-08-22 22:53:15,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:15,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-08-22 22:53:15,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 223. [2020-08-22 22:53:15,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-08-22 22:53:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 262 transitions. [2020-08-22 22:53:15,889 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 262 transitions. Word has length 51 [2020-08-22 22:53:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:15,889 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 262 transitions. [2020-08-22 22:53:15,890 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:15,890 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 262 transitions. [2020-08-22 22:53:15,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-08-22 22:53:15,891 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:15,891 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1] [2020-08-22 22:53:15,892 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-22 22:53:15,892 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:15,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:15,893 INFO L82 PathProgramCache]: Analyzing trace with hash -389028907, now seen corresponding path program 1 times [2020-08-22 22:53:15,893 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:15,893 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120696142] [2020-08-22 22:53:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:15,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:15,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:15,954 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:53:15,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120696142] [2020-08-22 22:53:15,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:15,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:15,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234652864] [2020-08-22 22:53:15,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:15,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:15,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:15,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:15,958 INFO L87 Difference]: Start difference. First operand 223 states and 262 transitions. Second operand 4 states. [2020-08-22 22:53:16,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:16,201 INFO L93 Difference]: Finished difference Result 369 states and 437 transitions. [2020-08-22 22:53:16,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:16,202 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-08-22 22:53:16,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:16,204 INFO L225 Difference]: With dead ends: 369 [2020-08-22 22:53:16,204 INFO L226 Difference]: Without dead ends: 199 [2020-08-22 22:53:16,206 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:16,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-08-22 22:53:16,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 197. [2020-08-22 22:53:16,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-08-22 22:53:16,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 228 transitions. [2020-08-22 22:53:16,230 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 228 transitions. Word has length 52 [2020-08-22 22:53:16,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:16,230 INFO L479 AbstractCegarLoop]: Abstraction has 197 states and 228 transitions. [2020-08-22 22:53:16,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:16,231 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 228 transitions. [2020-08-22 22:53:16,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 22:53:16,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:16,232 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1] [2020-08-22 22:53:16,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-22 22:53:16,233 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:16,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:16,233 INFO L82 PathProgramCache]: Analyzing trace with hash 910217494, now seen corresponding path program 1 times [2020-08-22 22:53:16,233 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:16,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818246678] [2020-08-22 22:53:16,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:16,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:16,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:16,303 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:53:16,304 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818246678] [2020-08-22 22:53:16,304 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:16,304 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:16,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473701831] [2020-08-22 22:53:16,309 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:16,309 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:16,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:16,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:16,311 INFO L87 Difference]: Start difference. First operand 197 states and 228 transitions. Second operand 4 states. [2020-08-22 22:53:16,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:16,530 INFO L93 Difference]: Finished difference Result 300 states and 348 transitions. [2020-08-22 22:53:16,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:16,531 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-08-22 22:53:16,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:16,532 INFO L225 Difference]: With dead ends: 300 [2020-08-22 22:53:16,532 INFO L226 Difference]: Without dead ends: 156 [2020-08-22 22:53:16,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:16,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-08-22 22:53:16,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 156. [2020-08-22 22:53:16,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-08-22 22:53:16,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 175 transitions. [2020-08-22 22:53:16,550 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 175 transitions. Word has length 54 [2020-08-22 22:53:16,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:16,551 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 175 transitions. [2020-08-22 22:53:16,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:16,551 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 175 transitions. [2020-08-22 22:53:16,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-08-22 22:53:16,552 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:16,552 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1] [2020-08-22 22:53:16,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-22 22:53:16,552 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:16,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:16,553 INFO L82 PathProgramCache]: Analyzing trace with hash 57784286, now seen corresponding path program 1 times [2020-08-22 22:53:16,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:16,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1703713380] [2020-08-22 22:53:16,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:16,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:16,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:16,598 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:53:16,599 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1703713380] [2020-08-22 22:53:16,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:16,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:16,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450433601] [2020-08-22 22:53:16,600 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:16,600 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:16,601 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:16,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:16,601 INFO L87 Difference]: Start difference. First operand 156 states and 175 transitions. Second operand 4 states. [2020-08-22 22:53:16,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:16,799 INFO L93 Difference]: Finished difference Result 158 states and 176 transitions. [2020-08-22 22:53:16,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:16,799 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 55 [2020-08-22 22:53:16,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:16,801 INFO L225 Difference]: With dead ends: 158 [2020-08-22 22:53:16,801 INFO L226 Difference]: Without dead ends: 153 [2020-08-22 22:53:16,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:16,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-08-22 22:53:16,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 153. [2020-08-22 22:53:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-08-22 22:53:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 171 transitions. [2020-08-22 22:53:16,818 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 171 transitions. Word has length 55 [2020-08-22 22:53:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:16,818 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 171 transitions. [2020-08-22 22:53:16,818 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 171 transitions. [2020-08-22 22:53:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-08-22 22:53:16,819 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 22:53:16,819 INFO L422 BasicCegarLoop]: trace histogram [3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 22:53:16,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-22 22:53:16,820 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 22:53:16,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 22:53:16,820 INFO L82 PathProgramCache]: Analyzing trace with hash 1987485698, now seen corresponding path program 1 times [2020-08-22 22:53:16,820 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 22:53:16,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1395112216] [2020-08-22 22:53:16,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 22:53:16,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:16,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 22:53:16,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 22:53:16,869 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-22 22:53:16,869 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1395112216] [2020-08-22 22:53:16,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 22:53:16,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 22:53:16,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505187611] [2020-08-22 22:53:16,870 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 22:53:16,871 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 22:53:16,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 22:53:16,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 22:53:16,871 INFO L87 Difference]: Start difference. First operand 153 states and 171 transitions. Second operand 4 states. [2020-08-22 22:53:17,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 22:53:17,050 INFO L93 Difference]: Finished difference Result 243 states and 275 transitions. [2020-08-22 22:53:17,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 22:53:17,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-08-22 22:53:17,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 22:53:17,051 INFO L225 Difference]: With dead ends: 243 [2020-08-22 22:53:17,052 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 22:53:17,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 22:53:17,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 22:53:17,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 22:53:17,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 22:53:17,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 22:53:17,054 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-08-22 22:53:17,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 22:53:17,054 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 22:53:17,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 22:53:17,054 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 22:53:17,054 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 22:53:17,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-22 22:53:17,057 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 22:53:19,786 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:53:19,786 INFO L271 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: true [2020-08-22 22:53:19,787 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~m_update~0 |old(~m_update~0)|) (= ~m_initSign~0 |old(~m_initSign~0)|) (= ~m_sign~0 |old(~m_sign~0)|) (= ~m_verify~0 |old(~m_verify~0)|) (= ~m_Signature~0 |old(~m_Signature~0)|) (= ~m_initVerify~0 |old(~m_initVerify~0)|)) [2020-08-22 22:53:19,787 INFO L271 CegarLoopResult]: At program point L9(line 9) the Hoare annotation is: true [2020-08-22 22:53:19,787 INFO L271 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: true [2020-08-22 22:53:19,787 INFO L271 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: true [2020-08-22 22:53:19,788 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-08-22 22:53:19,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:53:19,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 22:53:19,788 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 22:53:19,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 22:53:19,788 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 22:53:19,789 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 390) the Hoare annotation is: true [2020-08-22 22:53:19,789 INFO L264 CegarLoopResult]: At program point L366(lines 366 377) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,789 INFO L264 CegarLoopResult]: At program point L300(line 300) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,789 INFO L264 CegarLoopResult]: At program point L300-1(lines 300 315) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,789 INFO L264 CegarLoopResult]: At program point L234(lines 234 245) the Hoare annotation is: (or (and (<= 3 main_~q~0) (= 2 main_~this_state~0)) (and (<= 2 main_~q~0) (<= main_~this_state~0 0))) [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L300-2(line 300) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L300-3(line 300) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L102(lines 102 113) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L334(lines 334 345) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L268(line 268) the Hoare annotation is: false [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L202(lines 202 213) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L70(lines 70 72) the Hoare annotation is: false [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L368(line 368) the Hoare annotation is: false [2020-08-22 22:53:19,790 INFO L264 CegarLoopResult]: At program point L302(lines 302 313) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,791 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 390) the Hoare annotation is: true [2020-08-22 22:53:19,791 INFO L264 CegarLoopResult]: At program point L170(lines 170 172) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,791 INFO L264 CegarLoopResult]: At program point L38(line 38) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 0)) [2020-08-22 22:53:19,791 INFO L264 CegarLoopResult]: At program point L270(lines 270 272) the Hoare annotation is: false [2020-08-22 22:53:19,791 INFO L264 CegarLoopResult]: At program point L138(lines 138 140) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,791 INFO L264 CegarLoopResult]: At program point L370(lines 370 372) the Hoare annotation is: false [2020-08-22 22:53:19,791 INFO L264 CegarLoopResult]: At program point L238(lines 238 240) the Hoare annotation is: (or (and (<= 3 main_~q~0) (= 2 main_~this_state~0)) (and (<= 2 main_~q~0) (<= main_~this_state~0 0))) [2020-08-22 22:53:19,792 INFO L264 CegarLoopResult]: At program point L106(lines 106 108) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,792 INFO L264 CegarLoopResult]: At program point L40(line 40) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,792 INFO L264 CegarLoopResult]: At program point L371(lines 13 390) the Hoare annotation is: false [2020-08-22 22:53:19,792 INFO L264 CegarLoopResult]: At program point L338(lines 338 340) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,792 INFO L264 CegarLoopResult]: At program point L206(lines 206 208) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,793 INFO L271 CegarLoopResult]: At program point L74(line 74) the Hoare annotation is: true [2020-08-22 22:53:19,793 INFO L264 CegarLoopResult]: At program point L306(lines 306 308) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,793 INFO L271 CegarLoopResult]: At program point L174(line 174) the Hoare annotation is: true [2020-08-22 22:53:19,793 INFO L264 CegarLoopResult]: At program point L274(line 274) the Hoare annotation is: false [2020-08-22 22:53:19,793 INFO L271 CegarLoopResult]: At program point L142(line 142) the Hoare annotation is: true [2020-08-22 22:53:19,793 INFO L264 CegarLoopResult]: At program point L374(line 374) the Hoare annotation is: false [2020-08-22 22:53:19,793 INFO L271 CegarLoopResult]: At program point L242(line 242) the Hoare annotation is: true [2020-08-22 22:53:19,793 INFO L264 CegarLoopResult]: At program point L110(line 110) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,794 INFO L264 CegarLoopResult]: At program point L342(line 342) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,794 INFO L264 CegarLoopResult]: At program point L276(line 276) the Hoare annotation is: false [2020-08-22 22:53:19,794 INFO L264 CegarLoopResult]: At program point L210(line 210) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,794 INFO L264 CegarLoopResult]: At program point L376(line 376) the Hoare annotation is: false [2020-08-22 22:53:19,794 INFO L264 CegarLoopResult]: At program point L310(line 310) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,794 INFO L264 CegarLoopResult]: At program point L112(line 112) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,795 INFO L264 CegarLoopResult]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 389) the Hoare annotation is: false [2020-08-22 22:53:19,795 INFO L264 CegarLoopResult]: At program point L344(line 344) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,795 INFO L264 CegarLoopResult]: At program point L212(line 212) the Hoare annotation is: (<= 4 main_~q~0) [2020-08-22 22:53:19,795 INFO L264 CegarLoopResult]: At program point L80(line 80) the Hoare annotation is: false [2020-08-22 22:53:19,795 INFO L264 CegarLoopResult]: At program point L47(lines 47 98) the Hoare annotation is: (or (and (<= main_~this_state~0 0) (= main_~q~0 2)) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-08-22 22:53:19,795 INFO L264 CegarLoopResult]: At program point L80-1(lines 80 95) the Hoare annotation is: false [2020-08-22 22:53:19,796 INFO L264 CegarLoopResult]: At program point L80-2(line 80) the Hoare annotation is: false [2020-08-22 22:53:19,796 INFO L264 CegarLoopResult]: At program point L80-3(line 80) the Hoare annotation is: false [2020-08-22 22:53:19,796 INFO L264 CegarLoopResult]: At program point L312(line 312) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,796 INFO L264 CegarLoopResult]: At program point L48(line 48) the Hoare annotation is: false [2020-08-22 22:53:19,796 INFO L264 CegarLoopResult]: At program point L48-1(lines 48 63) the Hoare annotation is: false [2020-08-22 22:53:19,796 INFO L264 CegarLoopResult]: At program point L48-2(line 48) the Hoare annotation is: false [2020-08-22 22:53:19,797 INFO L264 CegarLoopResult]: At program point L48-3(line 48) the Hoare annotation is: false [2020-08-22 22:53:19,797 INFO L264 CegarLoopResult]: At program point L148(line 148) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,797 INFO L264 CegarLoopResult]: At program point L148-1(lines 148 163) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,797 INFO L264 CegarLoopResult]: At program point L82(lines 82 93) the Hoare annotation is: false [2020-08-22 22:53:19,797 INFO L264 CegarLoopResult]: At program point L148-2(line 148) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,797 INFO L264 CegarLoopResult]: At program point L148-3(line 148) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,797 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (= main_~q~0 0) [2020-08-22 22:53:19,798 INFO L264 CegarLoopResult]: At program point L248(line 248) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,798 INFO L264 CegarLoopResult]: At program point L248-1(lines 248 263) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,798 INFO L264 CegarLoopResult]: At program point L248-2(line 248) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,798 INFO L264 CegarLoopResult]: At program point L248-3(line 248) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,798 INFO L264 CegarLoopResult]: At program point L116(line 116) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,798 INFO L264 CegarLoopResult]: At program point L116-1(lines 116 131) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,798 INFO L264 CegarLoopResult]: At program point L50(lines 50 61) the Hoare annotation is: false [2020-08-22 22:53:19,799 INFO L264 CegarLoopResult]: At program point L116-2(line 116) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,799 INFO L264 CegarLoopResult]: At program point L116-3(line 116) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,799 INFO L264 CegarLoopResult]: At program point L381(lines 22 385) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-08-22 22:53:19,799 INFO L264 CegarLoopResult]: At program point L348(line 348) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,799 INFO L264 CegarLoopResult]: At program point L348-1(lines 348 363) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,800 INFO L264 CegarLoopResult]: At program point L348-2(line 348) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,800 INFO L264 CegarLoopResult]: At program point L348-3(line 348) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,800 INFO L264 CegarLoopResult]: At program point L216(line 216) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,800 INFO L264 CegarLoopResult]: At program point L183(lines 183 282) the Hoare annotation is: (or (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-08-22 22:53:19,800 INFO L264 CegarLoopResult]: At program point L216-1(lines 216 231) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,801 INFO L264 CegarLoopResult]: At program point L150(lines 150 161) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,801 INFO L264 CegarLoopResult]: At program point L216-2(line 216) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,801 INFO L264 CegarLoopResult]: At program point L216-3(line 216) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,801 INFO L264 CegarLoopResult]: At program point L316(line 316) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,801 INFO L264 CegarLoopResult]: At program point L283(lines 283 382) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,801 INFO L264 CegarLoopResult]: At program point L316-1(lines 316 331) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,802 INFO L264 CegarLoopResult]: At program point L250(lines 250 261) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,802 INFO L264 CegarLoopResult]: At program point L316-2(line 316) the Hoare annotation is: (or (and (<= 3 main_~this_state~0) (<= 4 main_~q~0)) (and (<= 2 main_~q~0) (<= main_~this_state~0 0))) [2020-08-22 22:53:19,802 INFO L264 CegarLoopResult]: At program point L316-3(line 316) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,802 INFO L264 CegarLoopResult]: At program point L184(line 184) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,802 INFO L264 CegarLoopResult]: At program point L184-1(lines 184 199) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,802 INFO L264 CegarLoopResult]: At program point L118(lines 118 129) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,803 INFO L264 CegarLoopResult]: At program point L184-2(line 184) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,803 INFO L264 CegarLoopResult]: At program point L184-3(line 184) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,803 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (= main_~q~0 0) [2020-08-22 22:53:19,803 INFO L264 CegarLoopResult]: At program point L350(lines 350 361) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,803 INFO L264 CegarLoopResult]: At program point L284(line 284) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,803 INFO L264 CegarLoopResult]: At program point L284-1(lines 284 299) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,803 INFO L264 CegarLoopResult]: At program point L218(lines 218 229) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L284-2(line 284) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L284-3(line 284) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L86(lines 86 88) the Hoare annotation is: false [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L318(lines 318 329) the Hoare annotation is: (or (and (<= 3 main_~this_state~0) (<= 4 main_~q~0)) (and (<= 2 main_~q~0) (<= main_~this_state~0 0))) [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L252(line 252) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L186(lines 186 197) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L54(lines 54 56) the Hoare annotation is: false [2020-08-22 22:53:19,804 INFO L264 CegarLoopResult]: At program point L352(line 352) the Hoare annotation is: false [2020-08-22 22:53:19,805 INFO L264 CegarLoopResult]: At program point L286(lines 286 297) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,805 INFO L264 CegarLoopResult]: At program point L154(lines 154 156) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,805 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 385) the Hoare annotation is: (or (and (<= main_~this_state~0 0) (= main_~q~0 0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-08-22 22:53:19,805 INFO L271 CegarLoopResult]: At program point L22-3(lines 22 385) the Hoare annotation is: true [2020-08-22 22:53:19,805 INFO L264 CegarLoopResult]: At program point L254(lines 254 256) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,805 INFO L264 CegarLoopResult]: At program point L122(lines 122 124) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,805 INFO L264 CegarLoopResult]: At program point L354(lines 354 356) the Hoare annotation is: false [2020-08-22 22:53:19,806 INFO L264 CegarLoopResult]: At program point L222(lines 222 224) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,806 INFO L271 CegarLoopResult]: At program point L90(line 90) the Hoare annotation is: true [2020-08-22 22:53:19,806 INFO L264 CegarLoopResult]: At program point L322(lines 322 324) the Hoare annotation is: (or (and (<= 3 main_~this_state~0) (<= 4 main_~q~0)) (and (<= 2 main_~q~0) (<= main_~this_state~0 0))) [2020-08-22 22:53:19,806 INFO L264 CegarLoopResult]: At program point L190(lines 190 192) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,806 INFO L271 CegarLoopResult]: At program point L58(line 58) the Hoare annotation is: true [2020-08-22 22:53:19,806 INFO L264 CegarLoopResult]: At program point L290(lines 290 292) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,806 INFO L271 CegarLoopResult]: At program point L158(line 158) the Hoare annotation is: true [2020-08-22 22:53:19,807 INFO L264 CegarLoopResult]: At program point L258(line 258) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,807 INFO L264 CegarLoopResult]: At program point L126(line 126) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,807 INFO L264 CegarLoopResult]: At program point L27(lines 27 46) the Hoare annotation is: (let ((.cse0 (<= main_~this_state~0 0))) (or (and .cse0 (= main_~q~0 0)) (and .cse0 (= main_~q~0 2)) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0)))) [2020-08-22 22:53:19,807 INFO L264 CegarLoopResult]: At program point L358(line 358) the Hoare annotation is: false [2020-08-22 22:53:19,807 INFO L264 CegarLoopResult]: At program point L226(line 226) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,808 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 0)) [2020-08-22 22:53:19,808 INFO L264 CegarLoopResult]: At program point L28-1(lines 28 43) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 0)) [2020-08-22 22:53:19,808 INFO L264 CegarLoopResult]: At program point L28-2(line 28) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 0)) [2020-08-22 22:53:19,808 INFO L264 CegarLoopResult]: At program point L28-3(line 28) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 0)) [2020-08-22 22:53:19,808 INFO L271 CegarLoopResult]: At program point L326(line 326) the Hoare annotation is: true [2020-08-22 22:53:19,808 INFO L264 CegarLoopResult]: At program point L260(line 260) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,808 INFO L264 CegarLoopResult]: At program point L194(line 194) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,809 INFO L264 CegarLoopResult]: At program point L128(line 128) the Hoare annotation is: (<= 4 main_~q~0) [2020-08-22 22:53:19,809 INFO L264 CegarLoopResult]: At program point L360(line 360) the Hoare annotation is: false [2020-08-22 22:53:19,809 INFO L264 CegarLoopResult]: At program point L294(line 294) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,809 INFO L264 CegarLoopResult]: At program point L228(line 228) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,809 INFO L264 CegarLoopResult]: At program point L30(lines 30 41) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 0)) [2020-08-22 22:53:19,809 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 390) the Hoare annotation is: true [2020-08-22 22:53:19,810 INFO L264 CegarLoopResult]: At program point L196(line 196) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,810 INFO L264 CegarLoopResult]: At program point L64(line 64) the Hoare annotation is: false [2020-08-22 22:53:19,810 INFO L264 CegarLoopResult]: At program point L64-1(lines 64 79) the Hoare annotation is: false [2020-08-22 22:53:19,810 INFO L264 CegarLoopResult]: At program point L64-2(line 64) the Hoare annotation is: false [2020-08-22 22:53:19,810 INFO L264 CegarLoopResult]: At program point L64-3(line 64) the Hoare annotation is: false [2020-08-22 22:53:19,810 INFO L264 CegarLoopResult]: At program point L296(line 296) the Hoare annotation is: (and (= 3 main_~this_state~0) (= main_~q~0 3)) [2020-08-22 22:53:19,810 INFO L264 CegarLoopResult]: At program point L164(line 164) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,811 INFO L264 CegarLoopResult]: At program point L164-1(lines 164 179) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,811 INFO L264 CegarLoopResult]: At program point L164-2(line 164) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,811 INFO L264 CegarLoopResult]: At program point L164-3(line 164) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,811 INFO L264 CegarLoopResult]: At program point L264(line 264) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,811 INFO L264 CegarLoopResult]: At program point L264-1(lines 264 279) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,811 INFO L264 CegarLoopResult]: At program point L264-2(line 264) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,812 INFO L264 CegarLoopResult]: At program point L264-3(line 264) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,812 INFO L264 CegarLoopResult]: At program point L132(line 132) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,812 INFO L264 CegarLoopResult]: At program point L99(lines 99 182) the Hoare annotation is: (or (and (<= main_~this_state~0 0) (= main_~q~0 2)) (and (= main_~q~0 3) (= 2 main_~this_state~0)) (and (<= 4 main_~q~0) (= 3 main_~this_state~0))) [2020-08-22 22:53:19,812 INFO L264 CegarLoopResult]: At program point L132-1(lines 132 147) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,812 INFO L264 CegarLoopResult]: At program point L66(lines 66 77) the Hoare annotation is: false [2020-08-22 22:53:19,812 INFO L264 CegarLoopResult]: At program point L132-2(line 132) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,813 INFO L264 CegarLoopResult]: At program point L132-3(line 132) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,813 INFO L264 CegarLoopResult]: At program point L364(line 364) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,813 INFO L264 CegarLoopResult]: At program point L364-1(lines 364 379) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,813 INFO L264 CegarLoopResult]: At program point L364-2(line 364) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,813 INFO L264 CegarLoopResult]: At program point L364-3(line 364) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,813 INFO L264 CegarLoopResult]: At program point L232(line 232) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,814 INFO L264 CegarLoopResult]: At program point L232-1(lines 232 247) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,814 INFO L264 CegarLoopResult]: At program point L166(lines 166 177) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,814 INFO L264 CegarLoopResult]: At program point L232-2(line 232) the Hoare annotation is: (or (and (<= 3 main_~q~0) (= 2 main_~this_state~0)) (and (<= 2 main_~q~0) (<= main_~this_state~0 0))) [2020-08-22 22:53:19,814 INFO L264 CegarLoopResult]: At program point L232-3(line 232) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,814 INFO L264 CegarLoopResult]: At program point L100(line 100) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,814 INFO L264 CegarLoopResult]: At program point L100-1(lines 100 115) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,815 INFO L264 CegarLoopResult]: At program point L34(lines 34 36) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 0)) [2020-08-22 22:53:19,815 INFO L264 CegarLoopResult]: At program point L100-2(line 100) the Hoare annotation is: (= main_~q~0 2) [2020-08-22 22:53:19,815 INFO L264 CegarLoopResult]: At program point L100-3(line 100) the Hoare annotation is: (and (<= main_~this_state~0 0) (= main_~q~0 2)) [2020-08-22 22:53:19,815 INFO L264 CegarLoopResult]: At program point L332(line 332) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,815 INFO L264 CegarLoopResult]: At program point L332-1(lines 332 347) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,815 INFO L264 CegarLoopResult]: At program point L266(lines 266 277) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,815 INFO L264 CegarLoopResult]: At program point L332-2(line 332) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,816 INFO L264 CegarLoopResult]: At program point L332-3(line 332) the Hoare annotation is: (and (<= 4 main_~q~0) (= 3 main_~this_state~0)) [2020-08-22 22:53:19,816 INFO L264 CegarLoopResult]: At program point L200(line 200) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,816 INFO L264 CegarLoopResult]: At program point L200-1(lines 200 215) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,816 INFO L264 CegarLoopResult]: At program point L134(lines 134 145) the Hoare annotation is: (and (<= 2 main_~q~0) (<= main_~this_state~0 0)) [2020-08-22 22:53:19,816 INFO L264 CegarLoopResult]: At program point L200-2(line 200) the Hoare annotation is: (= main_~q~0 3) [2020-08-22 22:53:19,816 INFO L264 CegarLoopResult]: At program point L200-3(line 200) the Hoare annotation is: (and (= main_~q~0 3) (= 2 main_~this_state~0)) [2020-08-22 22:53:19,839 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 10:53:19 BoogieIcfgContainer [2020-08-22 22:53:19,839 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 22:53:19,842 INFO L168 Benchmark]: Toolchain (without parser) took 8388.03 ms. Allocated memory was 148.9 MB in the beginning and 317.7 MB in the end (delta: 168.8 MB). Free memory was 105.7 MB in the beginning and 248.8 MB in the end (delta: -143.1 MB). Peak memory consumption was 173.1 MB. Max. memory is 7.1 GB. [2020-08-22 22:53:19,843 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 22:53:19,844 INFO L168 Benchmark]: CACSL2BoogieTranslator took 416.31 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 105.3 MB in the beginning and 184.4 MB in the end (delta: -79.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:53:19,845 INFO L168 Benchmark]: Boogie Preprocessor took 48.42 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 182.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:53:19,846 INFO L168 Benchmark]: RCFGBuilder took 683.92 ms. Allocated memory is still 206.0 MB. Free memory was 182.5 MB in the beginning and 146.3 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-22 22:53:19,847 INFO L168 Benchmark]: TraceAbstraction took 7233.88 ms. Allocated memory was 206.0 MB in the beginning and 317.7 MB in the end (delta: 111.7 MB). Free memory was 145.7 MB in the beginning and 248.8 MB in the end (delta: -103.2 MB). Peak memory consumption was 155.9 MB. Max. memory is 7.1 GB. [2020-08-22 22:53:19,850 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 148.9 MB. Free memory was 124.6 MB in the beginning and 124.4 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 416.31 ms. Allocated memory was 148.9 MB in the beginning and 206.0 MB in the end (delta: 57.1 MB). Free memory was 105.3 MB in the beginning and 184.4 MB in the end (delta: -79.1 MB). Peak memory consumption was 21.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 48.42 ms. Allocated memory is still 206.0 MB. Free memory was 184.4 MB in the beginning and 182.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 683.92 ms. Allocated memory is still 206.0 MB. Free memory was 182.5 MB in the beginning and 146.3 MB in the end (delta: 36.2 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7233.88 ms. Allocated memory was 206.0 MB in the beginning and 317.7 MB in the end (delta: 111.7 MB). Free memory was 145.7 MB in the beginning and 248.8 MB in the end (delta: -103.2 MB). Peak memory consumption was 155.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 389]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (((this_state <= 0 && q == 0) || (this_state <= 0 && q == 2)) || (q == 3 && 2 == this_state)) || (4 <= q && 3 == this_state) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: (this_state <= 0 && q == 0) || (4 <= q && 3 == this_state) - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 191 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.3s, OverallIterations: 11, TraceHistogramMax: 3, AutomataDifference: 3.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1996 SDtfs, 2887 SDslu, 123 SDs, 0 SdLazy, 1238 SolverSat, 97 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 73 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=243occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 61 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 191 LocationsWithAnnotation, 191 PreInvPairs, 355 NumberOfFragments, 1069 HoareAnnotationTreeSize, 191 FomulaSimplifications, 3354 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 191 FomulaSimplificationsInter, 3787 FormulaSimplificationTreeSizeReductionInter, 2.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 476 NumberOfCodeBlocks, 476 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 465 ConstructedInterpolants, 0 QuantifiedInterpolants, 39149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 11 PerfectInterpolantSequences, 56/56 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...