/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_5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 12:01:30,086 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 12:01:30,090 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 12:01:30,113 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 12:01:30,114 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 12:01:30,116 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 12:01:30,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 12:01:30,130 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 12:01:30,134 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 12:01:30,138 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 12:01:30,141 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 12:01:30,143 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 12:01:30,144 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 12:01:30,146 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 12:01:30,148 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 12:01:30,149 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 12:01:30,150 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 12:01:30,151 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 12:01:30,153 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 12:01:30,159 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 12:01:30,164 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 12:01:30,168 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 12:01:30,169 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 12:01:30,170 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 12:01:30,173 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 12:01:30,184 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 12:01:30,185 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 12:01:30,186 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 12:01:30,187 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 [2020-07-17 12:01:30,210 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 12:01:30,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 12:01:30,212 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 12:01:30,212 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 12:01:30,213 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 12:01:30,213 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 12:01:30,213 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 12:01:30,213 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 12:01:30,213 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 12:01:30,214 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 12:01:30,214 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 12:01:30,214 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 12:01:30,214 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 12:01:30,214 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 12:01:30,215 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 12:01:30,215 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 12:01:30,215 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 12:01:30,215 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 12:01:30,215 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 12:01:30,216 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 12:01:30,216 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 12:01:30,216 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:01:30,216 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 12:01:30,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 12:01:30,217 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 12:01:30,217 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 12:01:30,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 12:01:30,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 12:01:30,217 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 12:01:30,218 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 12:01:30,526 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 12:01:30,550 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 12:01:30,554 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 12:01:30,555 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 12:01:30,556 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 12:01:30,557 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_5.c [2020-07-17 12:01:30,641 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce633d37f/8b7e2ad52b5e47f194a599be30fcc435/FLAG684a8cf59 [2020-07-17 12:01:31,119 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 12:01:31,120 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_5.c [2020-07-17 12:01:31,126 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce633d37f/8b7e2ad52b5e47f194a599be30fcc435/FLAG684a8cf59 [2020-07-17 12:01:31,477 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ce633d37f/8b7e2ad52b5e47f194a599be30fcc435 [2020-07-17 12:01:31,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 12:01:31,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 12:01:31,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 12:01:31,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 12:01:31,494 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 12:01:31,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,498 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fbef736 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31, skipping insertion in model container [2020-07-17 12:01:31,498 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,506 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 12:01:31,527 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 12:01:31,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:01:31,728 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 12:01:31,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 12:01:31,769 INFO L208 MainTranslator]: Completed translation [2020-07-17 12:01:31,770 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31 WrapperNode [2020-07-17 12:01:31,770 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 12:01:31,771 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 12:01:31,771 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 12:01:31,771 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 12:01:31,790 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,900 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,900 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,919 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... [2020-07-17 12:01:31,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 12:01:31,925 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 12:01:31,925 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 12:01:31,925 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 12:01:31,926 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 12:01:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 12:01:32,008 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 12:01:32,009 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 12:01:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 12:01:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 12:01:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 12:01:32,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 12:01:32,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 12:01:32,340 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 12:01:32,341 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 12:01:32,344 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:01:32 BoogieIcfgContainer [2020-07-17 12:01:32,347 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 12:01:32,348 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 12:01:32,349 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 12:01:32,356 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 12:01:32,356 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 12:01:31" (1/3) ... [2020-07-17 12:01:32,357 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d445f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:01:32, skipping insertion in model container [2020-07-17 12:01:32,359 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 12:01:31" (2/3) ... [2020-07-17 12:01:32,360 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d445f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 12:01:32, skipping insertion in model container [2020-07-17 12:01:32,360 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 12:01:32" (3/3) ... [2020-07-17 12:01:32,365 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_5.c [2020-07-17 12:01:32,374 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 12:01:32,381 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 12:01:32,393 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 12:01:32,415 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 12:01:32,415 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 12:01:32,416 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 12:01:32,416 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 12:01:32,416 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 12:01:32,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 12:01:32,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 12:01:32,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 12:01:32,433 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-07-17 12:01:32,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 12:01:32,439 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:32,440 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:32,440 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:32,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:32,447 INFO L82 PathProgramCache]: Analyzing trace with hash 316328318, now seen corresponding path program 1 times [2020-07-17 12:01:32,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:32,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104625322] [2020-07-17 12:01:32,457 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:32,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:32,630 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:32,631 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104625322] [2020-07-17 12:01:32,636 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:32,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:32,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476286662] [2020-07-17 12:01:32,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:32,644 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:32,658 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:32,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:32,661 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 3 states. [2020-07-17 12:01:32,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:32,710 INFO L93 Difference]: Finished difference Result 57 states and 90 transitions. [2020-07-17 12:01:32,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:32,713 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-17 12:01:32,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:32,724 INFO L225 Difference]: With dead ends: 57 [2020-07-17 12:01:32,725 INFO L226 Difference]: Without dead ends: 42 [2020-07-17 12:01:32,729 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 [2020-07-17 12:01:32,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-17 12:01:32,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 30. [2020-07-17 12:01:32,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 12:01:32,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 49 transitions. [2020-07-17 12:01:32,775 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 49 transitions. Word has length 15 [2020-07-17 12:01:32,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:32,775 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 49 transitions. [2020-07-17 12:01:32,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:32,776 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 49 transitions. [2020-07-17 12:01:32,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-17 12:01:32,777 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:32,777 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:32,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 12:01:32,778 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:32,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:32,779 INFO L82 PathProgramCache]: Analyzing trace with hash -493018308, now seen corresponding path program 1 times [2020-07-17 12:01:32,779 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:32,779 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682045449] [2020-07-17 12:01:32,780 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:32,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:32,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:32,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:32,831 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682045449] [2020-07-17 12:01:32,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:32,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:32,832 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001665366] [2020-07-17 12:01:32,834 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:32,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:32,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:32,835 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:32,835 INFO L87 Difference]: Start difference. First operand 30 states and 49 transitions. Second operand 3 states. [2020-07-17 12:01:32,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:32,877 INFO L93 Difference]: Finished difference Result 67 states and 112 transitions. [2020-07-17 12:01:32,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:32,878 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-07-17 12:01:32,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:32,880 INFO L225 Difference]: With dead ends: 67 [2020-07-17 12:01:32,880 INFO L226 Difference]: Without dead ends: 42 [2020-07-17 12:01:32,881 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 [2020-07-17 12:01:32,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-17 12:01:32,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-07-17 12:01:32,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 12:01:32,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 65 transitions. [2020-07-17 12:01:32,890 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 65 transitions. Word has length 15 [2020-07-17 12:01:32,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:32,891 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 65 transitions. [2020-07-17 12:01:32,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:32,891 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 65 transitions. [2020-07-17 12:01:32,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 12:01:32,892 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:32,892 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:32,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 12:01:32,893 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:32,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:32,894 INFO L82 PathProgramCache]: Analyzing trace with hash 1216458266, now seen corresponding path program 1 times [2020-07-17 12:01:32,894 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:32,894 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504028103] [2020-07-17 12:01:32,895 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:32,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:32,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:32,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504028103] [2020-07-17 12:01:32,938 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:32,938 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:32,938 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383925706] [2020-07-17 12:01:32,939 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:32,939 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:32,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:32,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:32,940 INFO L87 Difference]: Start difference. First operand 40 states and 65 transitions. Second operand 3 states. [2020-07-17 12:01:32,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:32,971 INFO L93 Difference]: Finished difference Result 63 states and 99 transitions. [2020-07-17 12:01:32,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:32,972 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-17 12:01:32,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:32,974 INFO L225 Difference]: With dead ends: 63 [2020-07-17 12:01:32,974 INFO L226 Difference]: Without dead ends: 45 [2020-07-17 12:01:32,975 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 [2020-07-17 12:01:32,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-17 12:01:32,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 43. [2020-07-17 12:01:32,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-17 12:01:32,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 67 transitions. [2020-07-17 12:01:32,984 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 67 transitions. Word has length 16 [2020-07-17 12:01:32,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:32,984 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 67 transitions. [2020-07-17 12:01:32,984 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:32,985 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 67 transitions. [2020-07-17 12:01:32,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 12:01:32,986 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:32,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:32,986 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 12:01:32,986 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:32,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:32,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1896516636, now seen corresponding path program 1 times [2020-07-17 12:01:32,987 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:32,988 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667216619] [2020-07-17 12:01:32,988 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667216619] [2020-07-17 12:01:33,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,033 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169949879] [2020-07-17 12:01:33,034 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,034 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,035 INFO L87 Difference]: Start difference. First operand 43 states and 67 transitions. Second operand 3 states. [2020-07-17 12:01:33,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,065 INFO L93 Difference]: Finished difference Result 76 states and 120 transitions. [2020-07-17 12:01:33,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,066 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-17 12:01:33,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,068 INFO L225 Difference]: With dead ends: 76 [2020-07-17 12:01:33,068 INFO L226 Difference]: Without dead ends: 74 [2020-07-17 12:01:33,069 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 [2020-07-17 12:01:33,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-17 12:01:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 56. [2020-07-17 12:01:33,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-17 12:01:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-07-17 12:01:33,082 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 16 [2020-07-17 12:01:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,082 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-07-17 12:01:33,083 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,083 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-07-17 12:01:33,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-17 12:01:33,084 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,084 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,084 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 12:01:33,085 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,085 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,085 INFO L82 PathProgramCache]: Analyzing trace with hash 1087170010, now seen corresponding path program 1 times [2020-07-17 12:01:33,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,086 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561739273] [2020-07-17 12:01:33,086 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561739273] [2020-07-17 12:01:33,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,121 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248848212] [2020-07-17 12:01:33,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,122 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,123 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 3 states. [2020-07-17 12:01:33,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,146 INFO L93 Difference]: Finished difference Result 124 states and 198 transitions. [2020-07-17 12:01:33,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-17 12:01:33,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,148 INFO L225 Difference]: With dead ends: 124 [2020-07-17 12:01:33,149 INFO L226 Difference]: Without dead ends: 76 [2020-07-17 12:01:33,150 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 [2020-07-17 12:01:33,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-17 12:01:33,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-07-17 12:01:33,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-17 12:01:33,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 114 transitions. [2020-07-17 12:01:33,161 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 114 transitions. Word has length 16 [2020-07-17 12:01:33,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,162 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 114 transitions. [2020-07-17 12:01:33,162 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,162 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 114 transitions. [2020-07-17 12:01:33,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 12:01:33,168 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 12:01:33,168 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,169 INFO L82 PathProgramCache]: Analyzing trace with hash -1337311087, now seen corresponding path program 1 times [2020-07-17 12:01:33,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [361389488] [2020-07-17 12:01:33,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [361389488] [2020-07-17 12:01:33,204 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,204 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024688466] [2020-07-17 12:01:33,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,205 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,206 INFO L87 Difference]: Start difference. First operand 74 states and 114 transitions. Second operand 3 states. [2020-07-17 12:01:33,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,228 INFO L93 Difference]: Finished difference Result 111 states and 169 transitions. [2020-07-17 12:01:33,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,229 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-17 12:01:33,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,230 INFO L225 Difference]: With dead ends: 111 [2020-07-17 12:01:33,230 INFO L226 Difference]: Without dead ends: 78 [2020-07-17 12:01:33,231 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 [2020-07-17 12:01:33,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-17 12:01:33,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2020-07-17 12:01:33,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-17 12:01:33,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 114 transitions. [2020-07-17 12:01:33,242 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 114 transitions. Word has length 17 [2020-07-17 12:01:33,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,242 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 114 transitions. [2020-07-17 12:01:33,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,243 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 114 transitions. [2020-07-17 12:01:33,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 12:01:33,244 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,244 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 12:01:33,245 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,245 INFO L82 PathProgramCache]: Analyzing trace with hash -657252717, now seen corresponding path program 1 times [2020-07-17 12:01:33,246 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104754243] [2020-07-17 12:01:33,246 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104754243] [2020-07-17 12:01:33,283 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,283 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1355998541] [2020-07-17 12:01:33,284 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,285 INFO L87 Difference]: Start difference. First operand 76 states and 114 transitions. Second operand 3 states. [2020-07-17 12:01:33,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,310 INFO L93 Difference]: Finished difference Result 132 states and 200 transitions. [2020-07-17 12:01:33,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,311 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-17 12:01:33,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,313 INFO L225 Difference]: With dead ends: 132 [2020-07-17 12:01:33,313 INFO L226 Difference]: Without dead ends: 130 [2020-07-17 12:01:33,314 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 [2020-07-17 12:01:33,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-07-17 12:01:33,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 104. [2020-07-17 12:01:33,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-07-17 12:01:33,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 154 transitions. [2020-07-17 12:01:33,335 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 154 transitions. Word has length 17 [2020-07-17 12:01:33,335 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,336 INFO L479 AbstractCegarLoop]: Abstraction has 104 states and 154 transitions. [2020-07-17 12:01:33,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,336 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 154 transitions. [2020-07-17 12:01:33,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 12:01:33,338 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,338 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 12:01:33,338 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,339 INFO L82 PathProgramCache]: Analyzing trace with hash -1466599343, now seen corresponding path program 1 times [2020-07-17 12:01:33,343 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,343 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581930625] [2020-07-17 12:01:33,343 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,374 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581930625] [2020-07-17 12:01:33,375 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,375 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,375 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088717567] [2020-07-17 12:01:33,376 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,376 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,376 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,377 INFO L87 Difference]: Start difference. First operand 104 states and 154 transitions. Second operand 3 states. [2020-07-17 12:01:33,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,402 INFO L93 Difference]: Finished difference Result 232 states and 344 transitions. [2020-07-17 12:01:33,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,403 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-17 12:01:33,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,404 INFO L225 Difference]: With dead ends: 232 [2020-07-17 12:01:33,405 INFO L226 Difference]: Without dead ends: 138 [2020-07-17 12:01:33,406 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 [2020-07-17 12:01:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-17 12:01:33,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 136. [2020-07-17 12:01:33,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-07-17 12:01:33,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 194 transitions. [2020-07-17 12:01:33,423 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 194 transitions. Word has length 17 [2020-07-17 12:01:33,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,423 INFO L479 AbstractCegarLoop]: Abstraction has 136 states and 194 transitions. [2020-07-17 12:01:33,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,424 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 194 transitions. [2020-07-17 12:01:33,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 12:01:33,425 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,426 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 12:01:33,426 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,427 INFO L82 PathProgramCache]: Analyzing trace with hash 1100217935, now seen corresponding path program 1 times [2020-07-17 12:01:33,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296682457] [2020-07-17 12:01:33,428 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296682457] [2020-07-17 12:01:33,457 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364391044] [2020-07-17 12:01:33,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,459 INFO L87 Difference]: Start difference. First operand 136 states and 194 transitions. Second operand 3 states. [2020-07-17 12:01:33,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,481 INFO L93 Difference]: Finished difference Result 204 states and 288 transitions. [2020-07-17 12:01:33,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,482 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-17 12:01:33,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,483 INFO L225 Difference]: With dead ends: 204 [2020-07-17 12:01:33,484 INFO L226 Difference]: Without dead ends: 142 [2020-07-17 12:01:33,485 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 [2020-07-17 12:01:33,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-07-17 12:01:33,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 140. [2020-07-17 12:01:33,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-07-17 12:01:33,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-07-17 12:01:33,514 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 18 [2020-07-17 12:01:33,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,514 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-07-17 12:01:33,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,514 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-07-17 12:01:33,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 12:01:33,516 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,516 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 12:01:33,516 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1780276305, now seen corresponding path program 1 times [2020-07-17 12:01:33,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1430297905] [2020-07-17 12:01:33,518 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,549 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1430297905] [2020-07-17 12:01:33,550 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,550 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580027323] [2020-07-17 12:01:33,551 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,551 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,552 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 3 states. [2020-07-17 12:01:33,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,575 INFO L93 Difference]: Finished difference Result 236 states and 328 transitions. [2020-07-17 12:01:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,576 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-17 12:01:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,578 INFO L225 Difference]: With dead ends: 236 [2020-07-17 12:01:33,579 INFO L226 Difference]: Without dead ends: 234 [2020-07-17 12:01:33,579 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 [2020-07-17 12:01:33,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2020-07-17 12:01:33,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 200. [2020-07-17 12:01:33,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-07-17 12:01:33,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 270 transitions. [2020-07-17 12:01:33,604 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 270 transitions. Word has length 18 [2020-07-17 12:01:33,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,605 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 270 transitions. [2020-07-17 12:01:33,605 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,605 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 270 transitions. [2020-07-17 12:01:33,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-17 12:01:33,607 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,607 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 12:01:33,608 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,608 INFO L82 PathProgramCache]: Analyzing trace with hash 970929679, now seen corresponding path program 1 times [2020-07-17 12:01:33,608 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,609 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [353047192] [2020-07-17 12:01:33,609 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [353047192] [2020-07-17 12:01:33,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614794761] [2020-07-17 12:01:33,638 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,638 INFO L87 Difference]: Start difference. First operand 200 states and 270 transitions. Second operand 3 states. [2020-07-17 12:01:33,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,663 INFO L93 Difference]: Finished difference Result 444 states and 592 transitions. [2020-07-17 12:01:33,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,664 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-17 12:01:33,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,666 INFO L225 Difference]: With dead ends: 444 [2020-07-17 12:01:33,666 INFO L226 Difference]: Without dead ends: 258 [2020-07-17 12:01:33,668 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 [2020-07-17 12:01:33,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2020-07-17 12:01:33,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 256. [2020-07-17 12:01:33,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 256 states. [2020-07-17 12:01:33,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 326 transitions. [2020-07-17 12:01:33,684 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 326 transitions. Word has length 18 [2020-07-17 12:01:33,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,684 INFO L479 AbstractCegarLoop]: Abstraction has 256 states and 326 transitions. [2020-07-17 12:01:33,684 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,684 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 326 transitions. [2020-07-17 12:01:33,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:01:33,686 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,686 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,686 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 12:01:33,686 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,687 INFO L82 PathProgramCache]: Analyzing trace with hash -645793370, now seen corresponding path program 1 times [2020-07-17 12:01:33,687 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336738731] [2020-07-17 12:01:33,688 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336738731] [2020-07-17 12:01:33,711 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,712 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715059191] [2020-07-17 12:01:33,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,713 INFO L87 Difference]: Start difference. First operand 256 states and 326 transitions. Second operand 3 states. [2020-07-17 12:01:33,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,735 INFO L93 Difference]: Finished difference Result 384 states and 484 transitions. [2020-07-17 12:01:33,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,736 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-17 12:01:33,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,738 INFO L225 Difference]: With dead ends: 384 [2020-07-17 12:01:33,738 INFO L226 Difference]: Without dead ends: 266 [2020-07-17 12:01:33,739 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 [2020-07-17 12:01:33,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-07-17 12:01:33,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 264. [2020-07-17 12:01:33,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 264 states. [2020-07-17 12:01:33,753 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 326 transitions. [2020-07-17 12:01:33,753 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 326 transitions. Word has length 19 [2020-07-17 12:01:33,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,754 INFO L479 AbstractCegarLoop]: Abstraction has 264 states and 326 transitions. [2020-07-17 12:01:33,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,754 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 326 transitions. [2020-07-17 12:01:33,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:01:33,755 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,756 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 12:01:33,756 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,757 INFO L82 PathProgramCache]: Analyzing trace with hash 34265000, now seen corresponding path program 1 times [2020-07-17 12:01:33,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166139442] [2020-07-17 12:01:33,758 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,782 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,782 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166139442] [2020-07-17 12:01:33,783 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,783 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,783 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [781736290] [2020-07-17 12:01:33,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,784 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,784 INFO L87 Difference]: Start difference. First operand 264 states and 326 transitions. Second operand 3 states. [2020-07-17 12:01:33,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,807 INFO L93 Difference]: Finished difference Result 426 states and 519 transitions. [2020-07-17 12:01:33,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,808 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-17 12:01:33,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,811 INFO L225 Difference]: With dead ends: 426 [2020-07-17 12:01:33,811 INFO L226 Difference]: Without dead ends: 424 [2020-07-17 12:01:33,812 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 [2020-07-17 12:01:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2020-07-17 12:01:33,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 392. [2020-07-17 12:01:33,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 392 states. [2020-07-17 12:01:33,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 470 transitions. [2020-07-17 12:01:33,828 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 470 transitions. Word has length 19 [2020-07-17 12:01:33,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,829 INFO L479 AbstractCegarLoop]: Abstraction has 392 states and 470 transitions. [2020-07-17 12:01:33,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,829 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 470 transitions. [2020-07-17 12:01:33,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-17 12:01:33,830 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 12:01:33,830 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 12:01:33,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 12:01:33,831 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 12:01:33,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 12:01:33,831 INFO L82 PathProgramCache]: Analyzing trace with hash -775081626, now seen corresponding path program 1 times [2020-07-17 12:01:33,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 12:01:33,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585910916] [2020-07-17 12:01:33,837 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 12:01:33,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 12:01:33,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 12:01:33,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585910916] [2020-07-17 12:01:33,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 12:01:33,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 12:01:33,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90658573] [2020-07-17 12:01:33,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 12:01:33,903 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 12:01:33,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 12:01:33,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 12:01:33,903 INFO L87 Difference]: Start difference. First operand 392 states and 470 transitions. Second operand 3 states. [2020-07-17 12:01:33,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 12:01:33,931 INFO L93 Difference]: Finished difference Result 856 states and 998 transitions. [2020-07-17 12:01:33,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 12:01:33,931 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-17 12:01:33,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 12:01:33,932 INFO L225 Difference]: With dead ends: 856 [2020-07-17 12:01:33,932 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 12:01:33,934 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 [2020-07-17 12:01:33,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 12:01:33,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 12:01:33,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 12:01:33,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 12:01:33,935 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-07-17 12:01:33,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 12:01:33,935 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 12:01:33,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 12:01:33,936 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 12:01:33,936 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 12:01:33,936 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 12:01:33,938 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 12:01:33,964 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 12:01:33,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:01:33,964 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-17 12:01:33,965 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 12:01:33,965 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 12:01:33,965 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-17 12:01:33,965 INFO L268 CegarLoopResult]: For program point L64(line 64) no Hoare annotation was computed. [2020-07-17 12:01:33,965 INFO L271 CegarLoopResult]: At program point L89(lines 5 93) the Hoare annotation is: true [2020-07-17 12:01:33,965 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 93) no Hoare annotation was computed. [2020-07-17 12:01:33,966 INFO L268 CegarLoopResult]: For program point L73-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,967 INFO L268 CegarLoopResult]: For program point L69(line 69) no Hoare annotation was computed. [2020-07-17 12:01:33,967 INFO L268 CegarLoopResult]: For program point L57-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,967 INFO L268 CegarLoopResult]: For program point L53-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,967 INFO L268 CegarLoopResult]: For program point L49-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,967 INFO L268 CegarLoopResult]: For program point L78-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,967 INFO L268 CegarLoopResult]: For program point L45-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,967 INFO L268 CegarLoopResult]: For program point L74(line 74) no Hoare annotation was computed. [2020-07-17 12:01:33,968 INFO L268 CegarLoopResult]: For program point L41(lines 41 43) no Hoare annotation was computed. [2020-07-17 12:01:33,968 INFO L268 CegarLoopResult]: For program point L41-2(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,968 INFO L271 CegarLoopResult]: At program point L83-1(lines 24 88) the Hoare annotation is: true [2020-07-17 12:01:33,968 INFO L268 CegarLoopResult]: For program point L79(line 79) no Hoare annotation was computed. [2020-07-17 12:01:33,968 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 93) no Hoare annotation was computed. [2020-07-17 12:01:33,969 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 91) no Hoare annotation was computed. [2020-07-17 12:01:33,969 INFO L268 CegarLoopResult]: For program point L63-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,969 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 93) the Hoare annotation is: true [2020-07-17 12:01:33,969 INFO L268 CegarLoopResult]: For program point L26(lines 26 28) no Hoare annotation was computed. [2020-07-17 12:01:33,969 INFO L268 CegarLoopResult]: For program point L84(line 84) no Hoare annotation was computed. [2020-07-17 12:01:33,969 INFO L264 CegarLoopResult]: At program point L84-1(lines 5 93) the Hoare annotation is: false [2020-07-17 12:01:33,969 INFO L268 CegarLoopResult]: For program point L68-1(lines 24 88) no Hoare annotation was computed. [2020-07-17 12:01:33,985 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 12:01:33 BoogieIcfgContainer [2020-07-17 12:01:33,985 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 12:01:33,988 INFO L168 Benchmark]: Toolchain (without parser) took 2500.17 ms. Allocated memory was 139.5 MB in the beginning and 233.3 MB in the end (delta: 93.8 MB). Free memory was 101.6 MB in the beginning and 148.1 MB in the end (delta: -46.5 MB). Peak memory consumption was 47.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:33,990 INFO L168 Benchmark]: CDTParser took 1.63 ms. Allocated memory is still 139.5 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 12:01:33,991 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.77 ms. Allocated memory is still 139.5 MB. Free memory was 101.2 MB in the beginning and 90.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:33,995 INFO L168 Benchmark]: Boogie Preprocessor took 153.61 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 181.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:34,003 INFO L168 Benchmark]: RCFGBuilder took 422.63 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:34,005 INFO L168 Benchmark]: TraceAbstraction took 1636.91 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 148.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. [2020-07-17 12:01:34,010 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.63 ms. Allocated memory is still 139.5 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 280.77 ms. Allocated memory is still 139.5 MB. Free memory was 101.2 MB in the beginning and 90.8 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 153.61 ms. Allocated memory was 139.5 MB in the beginning and 203.4 MB in the end (delta: 64.0 MB). Free memory was 90.8 MB in the beginning and 181.5 MB in the end (delta: -90.7 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.63 ms. Allocated memory is still 203.4 MB. Free memory was 181.5 MB in the beginning and 166.7 MB in the end (delta: 14.9 MB). Peak memory consumption was 14.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1636.91 ms. Allocated memory was 203.4 MB in the beginning and 233.3 MB in the end (delta: 29.9 MB). Free memory was 166.7 MB in the beginning and 148.1 MB in the end (delta: 18.5 MB). Peak memory consumption was 48.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 91]: 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: 24]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 5]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.5s, OverallIterations: 14, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 654 SDtfs, 285 SDslu, 428 SDs, 0 SdLazy, 75 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=392occurred in iteration=13, 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, 14 MinimizatonAttempts, 138 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 42 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, 0.3s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 6424 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 14 InterpolantComputations, 14 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...