/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:15:49,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:15:49,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:15:49,831 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:15:49,831 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:15:49,832 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:15:49,834 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:15:49,836 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:15:49,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:15:49,838 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:15:49,839 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:15:49,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:15:49,842 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:15:49,843 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:15:49,845 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:15:49,846 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:15:49,847 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:15:49,847 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:15:49,849 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:15:49,851 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:15:49,853 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:15:49,854 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:15:49,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:15:49,855 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:15:49,858 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 11:15:49,866 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:15:49,867 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:15:49,868 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:15:49,868 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-07 11:15:49,884 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:15:49,884 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:15:49,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:15:49,886 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:15:49,886 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:15:49,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:15:49,886 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:15:49,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:15:49,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:15:49,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:15:49,887 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:15:49,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:15:49,887 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:15:49,888 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:15:49,888 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:15:49,888 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:15:49,888 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:15:49,888 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:15:49,889 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:15:49,889 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:15:49,889 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:15:49,889 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:15:49,889 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:15:49,890 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:15:49,890 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:15:49,890 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:15:49,890 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:15:49,891 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:15:49,891 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:15:49,891 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:15:50,211 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:15:50,223 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:15:50,228 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:15:50,230 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:15:50,230 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:15:50,231 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-07-07 11:15:50,328 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4121c0771/7227f39c415f4c1e8b41200f2f2e5de5/FLAGd913191a1 [2020-07-07 11:15:50,807 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:15:50,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c [2020-07-07 11:15:50,817 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4121c0771/7227f39c415f4c1e8b41200f2f2e5de5/FLAGd913191a1 [2020-07-07 11:15:51,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4121c0771/7227f39c415f4c1e8b41200f2f2e5de5 [2020-07-07 11:15:51,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:15:51,229 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:15:51,230 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:51,230 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:15:51,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:15:51,235 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,238 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f91136a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51, skipping insertion in model container [2020-07-07 11:15:51,238 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:15:51,268 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:15:51,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:51,456 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:15:51,479 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:15:51,494 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:15:51,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51 WrapperNode [2020-07-07 11:15:51,495 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:15:51,496 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:15:51,496 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:15:51,496 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:15:51,597 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,597 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,608 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,608 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,628 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,629 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... [2020-07-07 11:15:51,631 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:15:51,632 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:15:51,632 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:15:51,632 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:15:51,633 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:15:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:15:51,709 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:15:51,710 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:15:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:15:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:15:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:15:51,710 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:15:51,711 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:15:51,973 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:15:51,974 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 11:15:51,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:51 BoogieIcfgContainer [2020-07-07 11:15:51,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:15:51,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:15:51,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:15:51,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:15:51,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:15:51" (1/3) ... [2020-07-07 11:15:51,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c669ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:51, skipping insertion in model container [2020-07-07 11:15:51,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:15:51" (2/3) ... [2020-07-07 11:15:51,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c669ffa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:15:51, skipping insertion in model container [2020-07-07 11:15:51,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:15:51" (3/3) ... [2020-07-07 11:15:51,991 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-07-07 11:15:52,008 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:15:52,018 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 11:15:52,034 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 11:15:52,065 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:15:52,065 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:15:52,066 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:15:52,066 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:15:52,066 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:15:52,066 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:15:52,066 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:15:52,066 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:15:52,092 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-07 11:15:52,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:15:52,104 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:52,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:52,106 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:52,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:52,114 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-07-07 11:15:52,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:52,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [359536228] [2020-07-07 11:15:52,125 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:52,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,332 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:52,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [359536228] [2020-07-07 11:15:52,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:52,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:52,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310957979] [2020-07-07 11:15:52,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:52,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:52,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:52,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,353 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-07 11:15:52,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:52,416 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-07-07 11:15:52,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:52,421 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-07 11:15:52,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:52,439 INFO L225 Difference]: With dead ends: 63 [2020-07-07 11:15:52,440 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 11:15:52,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 11:15:52,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-07-07 11:15:52,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-07 11:15:52,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-07-07 11:15:52,484 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-07-07 11:15:52,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:52,485 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-07-07 11:15:52,485 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:52,485 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-07-07 11:15:52,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-07 11:15:52,486 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:52,487 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:52,487 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:15:52,487 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:52,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:52,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-07-07 11:15:52,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:52,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058895870] [2020-07-07 11:15:52,489 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:52,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:52,557 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058895870] [2020-07-07 11:15:52,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:52,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:52,558 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2066167224] [2020-07-07 11:15:52,560 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:52,560 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:52,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:52,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,561 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-07-07 11:15:52,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:52,594 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-07-07 11:15:52,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:52,595 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-07 11:15:52,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:52,597 INFO L225 Difference]: With dead ends: 77 [2020-07-07 11:15:52,597 INFO L226 Difference]: Without dead ends: 48 [2020-07-07 11:15:52,599 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-07 11:15:52,608 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-07-07 11:15:52,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-07 11:15:52,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-07-07 11:15:52,610 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-07-07 11:15:52,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:52,611 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-07-07 11:15:52,613 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:52,614 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-07-07 11:15:52,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:15:52,615 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:52,615 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:52,615 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:15:52,615 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:52,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:52,616 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-07-07 11:15:52,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:52,617 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774026483] [2020-07-07 11:15:52,617 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:52,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,670 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:52,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774026483] [2020-07-07 11:15:52,671 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:52,671 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:52,671 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965325823] [2020-07-07 11:15:52,672 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:52,672 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:52,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:52,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,673 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-07-07 11:15:52,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:52,695 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-07-07 11:15:52,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:52,696 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 11:15:52,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:52,697 INFO L225 Difference]: With dead ends: 72 [2020-07-07 11:15:52,698 INFO L226 Difference]: Without dead ends: 51 [2020-07-07 11:15:52,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-07 11:15:52,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-07-07 11:15:52,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-07 11:15:52,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-07-07 11:15:52,708 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-07-07 11:15:52,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:52,708 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-07-07 11:15:52,709 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:52,709 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-07-07 11:15:52,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:15:52,710 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:52,710 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:52,710 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:15:52,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:52,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:52,711 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-07-07 11:15:52,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:52,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8195796] [2020-07-07 11:15:52,712 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:52,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:52,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8195796] [2020-07-07 11:15:52,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:52,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:52,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142574816] [2020-07-07 11:15:52,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:52,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:52,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:52,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,785 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-07-07 11:15:52,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:52,809 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-07-07 11:15:52,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:52,810 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 11:15:52,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:52,811 INFO L225 Difference]: With dead ends: 88 [2020-07-07 11:15:52,812 INFO L226 Difference]: Without dead ends: 86 [2020-07-07 11:15:52,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-07 11:15:52,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-07-07 11:15:52,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-07 11:15:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-07-07 11:15:52,826 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-07-07 11:15:52,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:52,826 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-07-07 11:15:52,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:52,827 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-07-07 11:15:52,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:15:52,828 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:52,828 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:52,829 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 11:15:52,829 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:52,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:52,829 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-07-07 11:15:52,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:52,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [496641168] [2020-07-07 11:15:52,830 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:52,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:52,866 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [496641168] [2020-07-07 11:15:52,866 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:52,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:52,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67948484] [2020-07-07 11:15:52,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:52,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:52,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:52,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,868 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-07-07 11:15:52,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:52,894 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-07-07 11:15:52,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:52,895 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 11:15:52,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:52,896 INFO L225 Difference]: With dead ends: 144 [2020-07-07 11:15:52,897 INFO L226 Difference]: Without dead ends: 88 [2020-07-07 11:15:52,897 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-07 11:15:52,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-07 11:15:52,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-07 11:15:52,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-07-07 11:15:52,909 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-07-07 11:15:52,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:52,909 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-07-07 11:15:52,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:52,910 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-07-07 11:15:52,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:15:52,911 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:52,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:52,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:15:52,911 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:52,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:52,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-07-07 11:15:52,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:52,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263704726] [2020-07-07 11:15:52,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:52,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:52,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:52,945 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263704726] [2020-07-07 11:15:52,945 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:52,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:52,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408212888] [2020-07-07 11:15:52,946 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:52,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:52,947 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:52,947 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,947 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-07-07 11:15:52,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:52,965 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-07-07 11:15:52,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:52,966 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-07 11:15:52,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:52,968 INFO L225 Difference]: With dead ends: 129 [2020-07-07 11:15:52,968 INFO L226 Difference]: Without dead ends: 90 [2020-07-07 11:15:52,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-07 11:15:52,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-07-07 11:15:52,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-07 11:15:52,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-07-07 11:15:52,979 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-07-07 11:15:52,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:52,980 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-07-07 11:15:52,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:52,980 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-07-07 11:15:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:15:52,981 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:52,981 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:52,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:15:52,982 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:52,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-07-07 11:15:52,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:52,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146641028] [2020-07-07 11:15:52,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,027 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146641028] [2020-07-07 11:15:53,027 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,027 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,028 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960561606] [2020-07-07 11:15:53,028 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,029 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,032 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-07-07 11:15:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,065 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-07-07 11:15:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-07 11:15:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,069 INFO L225 Difference]: With dead ends: 156 [2020-07-07 11:15:53,070 INFO L226 Difference]: Without dead ends: 154 [2020-07-07 11:15:53,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-07 11:15:53,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-07-07 11:15:53,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-07 11:15:53,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-07-07 11:15:53,100 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-07-07 11:15:53,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,101 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-07-07 11:15:53,101 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,101 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-07-07 11:15:53,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-07 11:15:53,105 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:53,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 11:15:53,105 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,106 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-07-07 11:15:53,106 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,109 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412963380] [2020-07-07 11:15:53,110 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412963380] [2020-07-07 11:15:53,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763699053] [2020-07-07 11:15:53,139 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,139 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,140 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-07-07 11:15:53,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,162 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-07-07 11:15:53,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,162 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-07 11:15:53,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,164 INFO L225 Difference]: With dead ends: 272 [2020-07-07 11:15:53,164 INFO L226 Difference]: Without dead ends: 162 [2020-07-07 11:15:53,166 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-07 11:15:53,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-07-07 11:15:53,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-07 11:15:53,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-07-07 11:15:53,181 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-07-07 11:15:53,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,181 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-07-07 11:15:53,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,182 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-07-07 11:15:53,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:53,183 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:53,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 11:15:53,184 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-07-07 11:15:53,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543917829] [2020-07-07 11:15:53,185 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,242 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,242 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543917829] [2020-07-07 11:15:53,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872099051] [2020-07-07 11:15:53,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,245 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-07-07 11:15:53,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,265 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-07-07 11:15:53,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,265 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:53,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,267 INFO L225 Difference]: With dead ends: 240 [2020-07-07 11:15:53,267 INFO L226 Difference]: Without dead ends: 166 [2020-07-07 11:15:53,268 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,268 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-07 11:15:53,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-07-07 11:15:53,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-07 11:15:53,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-07-07 11:15:53,279 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-07-07 11:15:53,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,280 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-07-07 11:15:53,280 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,280 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-07-07 11:15:53,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:53,281 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:53,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 11:15:53,282 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-07-07 11:15:53,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102486617] [2020-07-07 11:15:53,283 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,305 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102486617] [2020-07-07 11:15:53,305 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,305 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,306 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386908389] [2020-07-07 11:15:53,306 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,306 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,307 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,307 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,307 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-07-07 11:15:53,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,331 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-07-07 11:15:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,332 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:53,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,334 INFO L225 Difference]: With dead ends: 284 [2020-07-07 11:15:53,334 INFO L226 Difference]: Without dead ends: 282 [2020-07-07 11:15:53,336 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-07 11:15:53,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-07-07 11:15:53,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-07 11:15:53,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-07-07 11:15:53,355 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-07-07 11:15:53,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,358 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-07-07 11:15:53,359 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,359 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-07-07 11:15:53,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:15:53,360 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:53,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-07 11:15:53,365 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,365 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,365 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-07-07 11:15:53,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544854271] [2020-07-07 11:15:53,366 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544854271] [2020-07-07 11:15:53,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273333631] [2020-07-07 11:15:53,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,406 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-07-07 11:15:53,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,432 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-07-07 11:15:53,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,433 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-07 11:15:53,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,435 INFO L225 Difference]: With dead ends: 524 [2020-07-07 11:15:53,435 INFO L226 Difference]: Without dead ends: 306 [2020-07-07 11:15:53,436 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-07 11:15:53,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-07-07 11:15:53,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-07-07 11:15:53,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-07-07 11:15:53,450 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-07-07 11:15:53,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,451 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-07-07 11:15:53,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,451 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-07-07 11:15:53,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:15:53,452 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,452 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:15:53,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-07 11:15:53,453 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,453 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-07-07 11:15:53,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531160704] [2020-07-07 11:15:53,454 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531160704] [2020-07-07 11:15:53,480 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467856732] [2020-07-07 11:15:53,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,482 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-07-07 11:15:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,511 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-07-07 11:15:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,512 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 11:15:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,514 INFO L225 Difference]: With dead ends: 456 [2020-07-07 11:15:53,514 INFO L226 Difference]: Without dead ends: 314 [2020-07-07 11:15:53,515 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-07 11:15:53,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-07-07 11:15:53,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-07-07 11:15:53,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-07-07 11:15:53,529 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-07-07 11:15:53,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,529 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-07-07 11:15:53,529 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,530 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-07-07 11:15:53,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:15:53,531 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,531 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] [2020-07-07 11:15:53,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-07 11:15:53,531 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,532 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-07-07 11:15:53,532 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221852227] [2020-07-07 11:15:53,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221852227] [2020-07-07 11:15:53,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894742297] [2020-07-07 11:15:53,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,558 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-07-07 11:15:53,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,580 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-07-07 11:15:53,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,581 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 11:15:53,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,584 INFO L225 Difference]: With dead ends: 524 [2020-07-07 11:15:53,584 INFO L226 Difference]: Without dead ends: 522 [2020-07-07 11:15:53,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-07-07 11:15:53,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-07-07 11:15:53,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-07-07 11:15:53,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-07-07 11:15:53,603 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-07-07 11:15:53,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,603 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-07-07 11:15:53,603 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,603 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-07-07 11:15:53,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-07 11:15:53,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,605 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] [2020-07-07 11:15:53,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-07 11:15:53,605 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-07-07 11:15:53,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238616680] [2020-07-07 11:15:53,607 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238616680] [2020-07-07 11:15:53,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554842418] [2020-07-07 11:15:53,630 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,630 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,630 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,630 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,631 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-07-07 11:15:53,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,658 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-07-07 11:15:53,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,659 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-07 11:15:53,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,662 INFO L225 Difference]: With dead ends: 1020 [2020-07-07 11:15:53,663 INFO L226 Difference]: Without dead ends: 586 [2020-07-07 11:15:53,664 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-07-07 11:15:53,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-07-07 11:15:53,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-07 11:15:53,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-07-07 11:15:53,688 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-07-07 11:15:53,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,689 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-07-07 11:15:53,689 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-07-07 11:15:53,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:15:53,691 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,691 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] [2020-07-07 11:15:53,691 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-07 11:15:53,691 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,692 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-07-07 11:15:53,692 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,692 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545975873] [2020-07-07 11:15:53,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,712 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545975873] [2020-07-07 11:15:53,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073154355] [2020-07-07 11:15:53,713 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,714 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,714 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,714 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-07-07 11:15:53,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,740 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-07-07 11:15:53,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,741 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:15:53,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,745 INFO L225 Difference]: With dead ends: 876 [2020-07-07 11:15:53,745 INFO L226 Difference]: Without dead ends: 602 [2020-07-07 11:15:53,746 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-07 11:15:53,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-07-07 11:15:53,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-07-07 11:15:53,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-07-07 11:15:53,768 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-07-07 11:15:53,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,768 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-07-07 11:15:53,768 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,768 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-07-07 11:15:53,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:15:53,770 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,770 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] [2020-07-07 11:15:53,770 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-07 11:15:53,770 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,771 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-07-07 11:15:53,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417324395] [2020-07-07 11:15:53,772 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,791 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417324395] [2020-07-07 11:15:53,791 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,791 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,792 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096989585] [2020-07-07 11:15:53,792 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,792 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,793 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,793 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-07-07 11:15:53,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,824 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-07-07 11:15:53,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:15:53,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,830 INFO L225 Difference]: With dead ends: 970 [2020-07-07 11:15:53,830 INFO L226 Difference]: Without dead ends: 968 [2020-07-07 11:15:53,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-07-07 11:15:53,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-07-07 11:15:53,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-07-07 11:15:53,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-07-07 11:15:53,867 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-07-07 11:15:53,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,867 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-07-07 11:15:53,868 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,868 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-07-07 11:15:53,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 11:15:53,870 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:15:53,870 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] [2020-07-07 11:15:53,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-07 11:15:53,871 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:15:53,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:15:53,871 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-07-07 11:15:53,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:15:53,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517175476] [2020-07-07 11:15:53,872 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:15:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:15:53,893 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:15:53,893 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517175476] [2020-07-07 11:15:53,893 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:15:53,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:15:53,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748678600] [2020-07-07 11:15:53,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:15:53,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:15:53,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:15:53,895 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,895 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-07-07 11:15:53,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:15:53,940 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-07-07 11:15:53,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:15:53,940 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 11:15:53,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:15:53,941 INFO L225 Difference]: With dead ends: 1992 [2020-07-07 11:15:53,941 INFO L226 Difference]: Without dead ends: 0 [2020-07-07 11:15:53,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:15:53,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-07 11:15:53,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-07 11:15:53,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-07 11:15:53,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-07 11:15:53,946 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-07 11:15:53,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:15:53,947 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-07 11:15:53,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:15:53,947 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-07 11:15:53,947 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-07 11:15:53,948 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-07 11:15:53,950 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-07 11:15:53,991 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-07 11:15:53,992 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:15:53,992 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-07 11:15:53,992 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-07 11:15:53,992 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-07 11:15:53,992 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-07 11:15:53,992 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-07-07 11:15:53,992 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-07-07 11:15:53,993 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,993 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-07-07 11:15:53,993 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-07-07 11:15:53,994 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-07-07 11:15:53,994 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,994 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,994 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,994 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-07-07 11:15:53,995 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-07-07 11:15:53,995 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,995 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-07-07 11:15:53,995 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-07-07 11:15:53,995 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-07 11:15:53,996 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,996 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-07-07 11:15:53,996 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-07 11:15:53,996 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-07-07 11:15:53,996 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-07-07 11:15:53,997 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,997 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,997 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,998 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-07 11:15:53,998 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:53,998 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-07-07 11:15:54,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:15:54 BoogieIcfgContainer [2020-07-07 11:15:54,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:15:54,014 INFO L168 Benchmark]: Toolchain (without parser) took 2785.02 ms. Allocated memory was 143.7 MB in the beginning and 230.7 MB in the end (delta: 87.0 MB). Free memory was 100.4 MB in the beginning and 77.1 MB in the end (delta: 23.4 MB). Peak memory consumption was 110.4 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:54,015 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 143.7 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-07 11:15:54,016 INFO L168 Benchmark]: CACSL2BoogieTranslator took 265.52 ms. Allocated memory is still 143.7 MB. Free memory was 100.2 MB in the beginning and 89.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:54,017 INFO L168 Benchmark]: Boogie Preprocessor took 135.72 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 89.6 MB in the beginning and 178.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:54,017 INFO L168 Benchmark]: RCFGBuilder took 348.96 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 163.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:54,018 INFO L168 Benchmark]: TraceAbstraction took 2029.19 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.3 MB in the beginning and 77.1 MB in the end (delta: 85.3 MB). Peak memory consumption was 115.2 MB. Max. memory is 7.1 GB. [2020-07-07 11:15:54,028 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 143.7 MB. Free memory was 118.6 MB in the beginning and 118.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 265.52 ms. Allocated memory is still 143.7 MB. Free memory was 100.2 MB in the beginning and 89.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.72 ms. Allocated memory was 143.7 MB in the beginning and 200.8 MB in the end (delta: 57.1 MB). Free memory was 89.6 MB in the beginning and 178.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.96 ms. Allocated memory is still 200.8 MB. Free memory was 178.6 MB in the beginning and 163.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2029.19 ms. Allocated memory was 200.8 MB in the beginning and 230.7 MB in the end (delta: 29.9 MB). Free memory was 162.3 MB in the beginning and 77.1 MB in the end (delta: 85.3 MB). Peak memory consumption was 115.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 105]: 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: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 27]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 923 SDtfs, 417 SDslu, 612 SDs, 0 SdLazy, 91 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=904occurred in iteration=16, 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, 17 MinimizatonAttempts, 270 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 74 NumberOfFragments, 7 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 300 ConstructedInterpolants, 0 QuantifiedInterpolants, 9690 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 17 InterpolantComputations, 17 PerfectInterpolantSequences, 0/0 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...