/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy CAMEL_NO_AM -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/locks/test_locks_6.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-79ed534 [2020-07-19 21:30:05,408 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-19 21:30:05,410 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-19 21:30:05,427 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-19 21:30:05,427 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-19 21:30:05,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-19 21:30:05,431 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-19 21:30:05,440 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-19 21:30:05,443 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-19 21:30:05,446 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-19 21:30:05,448 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-19 21:30:05,449 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-19 21:30:05,449 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-19 21:30:05,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-19 21:30:05,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-19 21:30:05,454 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-19 21:30:05,455 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-19 21:30:05,456 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-19 21:30:05,457 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-19 21:30:05,462 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-19 21:30:05,466 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-19 21:30:05,469 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-19 21:30:05,470 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-19 21:30:05,471 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-19 21:30:05,473 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-19 21:30:05,473 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-19 21:30:05,473 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-19 21:30:05,476 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-19 21:30:05,476 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-19 21:30:05,478 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-19 21:30:05,478 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-19 21:30:05,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-19 21:30:05,480 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-19 21:30:05,480 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-19 21:30:05,482 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-19 21:30:05,482 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-19 21:30:05,483 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-19 21:30:05,483 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-19 21:30:05,483 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-19 21:30:05,484 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-19 21:30:05,485 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-19 21:30:05,486 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 [2020-07-19 21:30:05,520 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-19 21:30:05,520 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-19 21:30:05,521 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-19 21:30:05,521 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-19 21:30:05,522 INFO L138 SettingsManager]: * Use SBE=true [2020-07-19 21:30:05,522 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-19 21:30:05,522 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-19 21:30:05,522 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-19 21:30:05,522 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-19 21:30:05,523 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-19 21:30:05,523 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-19 21:30:05,523 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-19 21:30:05,523 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-19 21:30:05,525 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-19 21:30:05,525 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-19 21:30:05,526 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-19 21:30:05,526 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-19 21:30:05,526 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-19 21:30:05,527 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-19 21:30:05,527 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-19 21:30:05,527 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-19 21:30:05,527 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-19 21:30:05,527 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-19 21:30:05,528 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-19 21:30:05,528 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-19 21:30:05,528 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-19 21:30:05,528 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-19 21:30:05,528 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-19 21:30:05,529 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-19 21:30:05,529 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> CAMEL_NO_AM [2020-07-19 21:30:05,789 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-19 21:30:05,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-19 21:30:05,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-19 21:30:05,807 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-19 21:30:05,807 INFO L275 PluginConnector]: CDTParser initialized [2020-07-19 21:30:05,808 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/locks/test_locks_6.c [2020-07-19 21:30:05,869 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b52d0d6/d0d04d115f414ca5b460b4438fd34f8f/FLAG74a061de7 [2020-07-19 21:30:06,292 INFO L306 CDTParser]: Found 1 translation units. [2020-07-19 21:30:06,293 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/locks/test_locks_6.c [2020-07-19 21:30:06,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b52d0d6/d0d04d115f414ca5b460b4438fd34f8f/FLAG74a061de7 [2020-07-19 21:30:06,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7b52d0d6/d0d04d115f414ca5b460b4438fd34f8f [2020-07-19 21:30:06,722 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-19 21:30:06,725 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-19 21:30:06,726 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:06,726 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-19 21:30:06,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-19 21:30:06,731 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:06" (1/1) ... [2020-07-19 21:30:06,733 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ab40a35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:06, skipping insertion in model container [2020-07-19 21:30:06,734 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:30:06" (1/1) ... [2020-07-19 21:30:06,741 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-19 21:30:06,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-19 21:30:06,958 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:06,967 INFO L203 MainTranslator]: Completed pre-run [2020-07-19 21:30:07,017 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-19 21:30:07,037 INFO L208 MainTranslator]: Completed translation [2020-07-19 21:30:07,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07 WrapperNode [2020-07-19 21:30:07,038 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-19 21:30:07,038 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-19 21:30:07,039 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-19 21:30:07,039 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-19 21:30:07,151 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (1/1) ... [2020-07-19 21:30:07,153 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (1/1) ... [2020-07-19 21:30:07,160 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (1/1) ... [2020-07-19 21:30:07,160 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (1/1) ... [2020-07-19 21:30:07,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (1/1) ... [2020-07-19 21:30:07,181 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (1/1) ... [2020-07-19 21:30:07,188 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (1/1) ... [2020-07-19 21:30:07,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-19 21:30:07,196 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-19 21:30:07,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-19 21:30:07,197 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-19 21:30:07,198 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (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 [2020-07-19 21:30:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-19 21:30:07,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-19 21:30:07,275 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-19 21:30:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-19 21:30:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-19 21:30:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-19 21:30:07,275 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-19 21:30:07,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-19 21:30:07,581 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-19 21:30:07,582 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-19 21:30:07,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:07 BoogieIcfgContainer [2020-07-19 21:30:07,586 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-19 21:30:07,590 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-19 21:30:07,590 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-19 21:30:07,593 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-19 21:30:07,593 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:30:06" (1/3) ... [2020-07-19 21:30:07,594 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48275cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:07, skipping insertion in model container [2020-07-19 21:30:07,594 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:30:07" (2/3) ... [2020-07-19 21:30:07,595 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@48275cb6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:30:07, skipping insertion in model container [2020-07-19 21:30:07,595 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:30:07" (3/3) ... [2020-07-19 21:30:07,597 INFO L109 eAbstractionObserver]: Analyzing ICFG test_locks_6.c [2020-07-19 21:30:07,620 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-19 21:30:07,628 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-19 21:30:07,641 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-19 21:30:07,663 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-19 21:30:07,664 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-19 21:30:07,664 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-19 21:30:07,664 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-19 21:30:07,664 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-19 21:30:07,664 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-19 21:30:07,665 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-19 21:30:07,665 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-19 21:30:07,684 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-07-19 21:30:07,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-19 21:30:07,690 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:07,692 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:07,692 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:07,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:07,702 INFO L82 PathProgramCache]: Analyzing trace with hash 429652513, now seen corresponding path program 1 times [2020-07-19 21:30:07,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:07,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47148279] [2020-07-19 21:30:07,711 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:07,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:07,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:07,915 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47148279] [2020-07-19 21:30:07,916 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:07,916 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:07,917 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165348185] [2020-07-19 21:30:07,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:07,921 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:07,931 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:07,931 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:07,934 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-07-19 21:30:07,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:07,989 INFO L93 Difference]: Finished difference Result 63 states and 102 transitions. [2020-07-19 21:30:07,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:07,991 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-19 21:30:07,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,003 INFO L225 Difference]: With dead ends: 63 [2020-07-19 21:30:08,004 INFO L226 Difference]: Without dead ends: 48 [2020-07-19 21:30:08,007 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 [2020-07-19 21:30:08,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-19 21:30:08,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 34. [2020-07-19 21:30:08,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-07-19 21:30:08,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 57 transitions. [2020-07-19 21:30:08,047 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 57 transitions. Word has length 16 [2020-07-19 21:30:08,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,047 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 57 transitions. [2020-07-19 21:30:08,048 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,048 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 57 transitions. [2020-07-19 21:30:08,049 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-19 21:30:08,049 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,049 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,050 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-19 21:30:08,050 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,050 INFO L82 PathProgramCache]: Analyzing trace with hash 1109710883, now seen corresponding path program 1 times [2020-07-19 21:30:08,051 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283113287] [2020-07-19 21:30:08,051 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,106 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283113287] [2020-07-19 21:30:08,106 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,107 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,107 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40105049] [2020-07-19 21:30:08,109 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,110 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,110 INFO L87 Difference]: Start difference. First operand 34 states and 57 transitions. Second operand 3 states. [2020-07-19 21:30:08,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,143 INFO L93 Difference]: Finished difference Result 77 states and 132 transitions. [2020-07-19 21:30:08,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,144 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-07-19 21:30:08,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,146 INFO L225 Difference]: With dead ends: 77 [2020-07-19 21:30:08,146 INFO L226 Difference]: Without dead ends: 48 [2020-07-19 21:30:08,148 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 [2020-07-19 21:30:08,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-19 21:30:08,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2020-07-19 21:30:08,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-19 21:30:08,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 77 transitions. [2020-07-19 21:30:08,160 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 77 transitions. Word has length 16 [2020-07-19 21:30:08,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,160 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 77 transitions. [2020-07-19 21:30:08,160 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,161 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 77 transitions. [2020-07-19 21:30:08,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 21:30:08,162 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,162 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-19 21:30:08,162 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,163 INFO L82 PathProgramCache]: Analyzing trace with hash 434540691, now seen corresponding path program 1 times [2020-07-19 21:30:08,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,164 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563241860] [2020-07-19 21:30:08,164 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563241860] [2020-07-19 21:30:08,232 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841959662] [2020-07-19 21:30:08,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,236 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,237 INFO L87 Difference]: Start difference. First operand 46 states and 77 transitions. Second operand 3 states. [2020-07-19 21:30:08,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,265 INFO L93 Difference]: Finished difference Result 72 states and 117 transitions. [2020-07-19 21:30:08,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,266 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-19 21:30:08,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,268 INFO L225 Difference]: With dead ends: 72 [2020-07-19 21:30:08,268 INFO L226 Difference]: Without dead ends: 51 [2020-07-19 21:30:08,269 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 [2020-07-19 21:30:08,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-19 21:30:08,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-07-19 21:30:08,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-07-19 21:30:08,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 79 transitions. [2020-07-19 21:30:08,279 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 79 transitions. Word has length 17 [2020-07-19 21:30:08,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,279 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 79 transitions. [2020-07-19 21:30:08,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,280 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 79 transitions. [2020-07-19 21:30:08,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 21:30:08,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,281 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-19 21:30:08,281 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,282 INFO L82 PathProgramCache]: Analyzing trace with hash 41513681, now seen corresponding path program 1 times [2020-07-19 21:30:08,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313013248] [2020-07-19 21:30:08,283 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,327 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313013248] [2020-07-19 21:30:08,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731500243] [2020-07-19 21:30:08,329 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,329 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,330 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,330 INFO L87 Difference]: Start difference. First operand 49 states and 79 transitions. Second operand 3 states. [2020-07-19 21:30:08,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,349 INFO L93 Difference]: Finished difference Result 88 states and 144 transitions. [2020-07-19 21:30:08,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,349 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-19 21:30:08,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,351 INFO L225 Difference]: With dead ends: 88 [2020-07-19 21:30:08,351 INFO L226 Difference]: Without dead ends: 86 [2020-07-19 21:30:08,352 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 [2020-07-19 21:30:08,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-07-19 21:30:08,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 64. [2020-07-19 21:30:08,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-19 21:30:08,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 104 transitions. [2020-07-19 21:30:08,363 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 104 transitions. Word has length 17 [2020-07-19 21:30:08,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,363 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 104 transitions. [2020-07-19 21:30:08,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,363 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 104 transitions. [2020-07-19 21:30:08,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-19 21:30:08,365 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,365 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-19 21:30:08,365 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,366 INFO L82 PathProgramCache]: Analyzing trace with hash 721572051, now seen corresponding path program 1 times [2020-07-19 21:30:08,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120507769] [2020-07-19 21:30:08,367 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,418 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120507769] [2020-07-19 21:30:08,418 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,419 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627096148] [2020-07-19 21:30:08,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,421 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,423 INFO L87 Difference]: Start difference. First operand 64 states and 104 transitions. Second operand 3 states. [2020-07-19 21:30:08,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,450 INFO L93 Difference]: Finished difference Result 144 states and 238 transitions. [2020-07-19 21:30:08,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,450 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-19 21:30:08,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,453 INFO L225 Difference]: With dead ends: 144 [2020-07-19 21:30:08,454 INFO L226 Difference]: Without dead ends: 88 [2020-07-19 21:30:08,454 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 [2020-07-19 21:30:08,455 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-19 21:30:08,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 86. [2020-07-19 21:30:08,467 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-19 21:30:08,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 138 transitions. [2020-07-19 21:30:08,471 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 138 transitions. Word has length 17 [2020-07-19 21:30:08,472 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,472 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 138 transitions. [2020-07-19 21:30:08,472 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,472 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 138 transitions. [2020-07-19 21:30:08,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-19 21:30:08,474 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,475 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-19 21:30:08,475 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,475 INFO L82 PathProgramCache]: Analyzing trace with hash 1287139128, now seen corresponding path program 1 times [2020-07-19 21:30:08,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512058336] [2020-07-19 21:30:08,476 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512058336] [2020-07-19 21:30:08,512 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,512 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398404085] [2020-07-19 21:30:08,513 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,513 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,513 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,514 INFO L87 Difference]: Start difference. First operand 86 states and 138 transitions. Second operand 3 states. [2020-07-19 21:30:08,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,534 INFO L93 Difference]: Finished difference Result 129 states and 205 transitions. [2020-07-19 21:30:08,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-19 21:30:08,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,536 INFO L225 Difference]: With dead ends: 129 [2020-07-19 21:30:08,537 INFO L226 Difference]: Without dead ends: 90 [2020-07-19 21:30:08,537 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 [2020-07-19 21:30:08,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-19 21:30:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2020-07-19 21:30:08,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-19 21:30:08,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 138 transitions. [2020-07-19 21:30:08,547 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 138 transitions. Word has length 18 [2020-07-19 21:30:08,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,548 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 138 transitions. [2020-07-19 21:30:08,548 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,548 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 138 transitions. [2020-07-19 21:30:08,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-19 21:30:08,549 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,549 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,550 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-19 21:30:08,550 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,551 INFO L82 PathProgramCache]: Analyzing trace with hash 894112118, now seen corresponding path program 1 times [2020-07-19 21:30:08,551 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909278672] [2020-07-19 21:30:08,551 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,581 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,582 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909278672] [2020-07-19 21:30:08,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,583 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374606869] [2020-07-19 21:30:08,583 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,583 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,584 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,584 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,584 INFO L87 Difference]: Start difference. First operand 88 states and 138 transitions. Second operand 3 states. [2020-07-19 21:30:08,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,602 INFO L93 Difference]: Finished difference Result 156 states and 248 transitions. [2020-07-19 21:30:08,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,603 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-19 21:30:08,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,605 INFO L225 Difference]: With dead ends: 156 [2020-07-19 21:30:08,605 INFO L226 Difference]: Without dead ends: 154 [2020-07-19 21:30:08,606 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 [2020-07-19 21:30:08,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-19 21:30:08,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 120. [2020-07-19 21:30:08,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-19 21:30:08,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 186 transitions. [2020-07-19 21:30:08,620 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 186 transitions. Word has length 18 [2020-07-19 21:30:08,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,620 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 186 transitions. [2020-07-19 21:30:08,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,621 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 186 transitions. [2020-07-19 21:30:08,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-19 21:30:08,622 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-19 21:30:08,623 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,623 INFO L82 PathProgramCache]: Analyzing trace with hash 1574170488, now seen corresponding path program 1 times [2020-07-19 21:30:08,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871049548] [2020-07-19 21:30:08,624 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,654 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,654 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871049548] [2020-07-19 21:30:08,655 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,655 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,655 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450524268] [2020-07-19 21:30:08,655 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,656 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,656 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,656 INFO L87 Difference]: Start difference. First operand 120 states and 186 transitions. Second operand 3 states. [2020-07-19 21:30:08,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,699 INFO L93 Difference]: Finished difference Result 272 states and 424 transitions. [2020-07-19 21:30:08,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,699 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-07-19 21:30:08,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,701 INFO L225 Difference]: With dead ends: 272 [2020-07-19 21:30:08,701 INFO L226 Difference]: Without dead ends: 162 [2020-07-19 21:30:08,702 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 [2020-07-19 21:30:08,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-07-19 21:30:08,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 160. [2020-07-19 21:30:08,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-19 21:30:08,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 242 transitions. [2020-07-19 21:30:08,717 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 242 transitions. Word has length 18 [2020-07-19 21:30:08,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,717 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 242 transitions. [2020-07-19 21:30:08,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,717 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 242 transitions. [2020-07-19 21:30:08,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:30:08,719 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,719 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,719 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-19 21:30:08,720 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,720 INFO L82 PathProgramCache]: Analyzing trace with hash 1947887240, now seen corresponding path program 1 times [2020-07-19 21:30:08,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973281570] [2020-07-19 21:30:08,721 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973281570] [2020-07-19 21:30:08,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973241481] [2020-07-19 21:30:08,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,752 INFO L87 Difference]: Start difference. First operand 160 states and 242 transitions. Second operand 3 states. [2020-07-19 21:30:08,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,770 INFO L93 Difference]: Finished difference Result 240 states and 360 transitions. [2020-07-19 21:30:08,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,771 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-19 21:30:08,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,772 INFO L225 Difference]: With dead ends: 240 [2020-07-19 21:30:08,773 INFO L226 Difference]: Without dead ends: 166 [2020-07-19 21:30:08,773 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 [2020-07-19 21:30:08,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-07-19 21:30:08,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 164. [2020-07-19 21:30:08,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-19 21:30:08,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 242 transitions. [2020-07-19 21:30:08,785 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 242 transitions. Word has length 19 [2020-07-19 21:30:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,786 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 242 transitions. [2020-07-19 21:30:08,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,786 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 242 transitions. [2020-07-19 21:30:08,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:30:08,787 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,788 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-19 21:30:08,788 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,789 INFO L82 PathProgramCache]: Analyzing trace with hash 1554860230, now seen corresponding path program 1 times [2020-07-19 21:30:08,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069084837] [2020-07-19 21:30:08,789 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069084837] [2020-07-19 21:30:08,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113529846] [2020-07-19 21:30:08,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,816 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,816 INFO L87 Difference]: Start difference. First operand 164 states and 242 transitions. Second operand 3 states. [2020-07-19 21:30:08,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,835 INFO L93 Difference]: Finished difference Result 284 states and 424 transitions. [2020-07-19 21:30:08,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,836 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-19 21:30:08,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,838 INFO L225 Difference]: With dead ends: 284 [2020-07-19 21:30:08,838 INFO L226 Difference]: Without dead ends: 282 [2020-07-19 21:30:08,839 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 [2020-07-19 21:30:08,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-07-19 21:30:08,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 232. [2020-07-19 21:30:08,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-07-19 21:30:08,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 334 transitions. [2020-07-19 21:30:08,853 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 334 transitions. Word has length 19 [2020-07-19 21:30:08,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,854 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 334 transitions. [2020-07-19 21:30:08,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,854 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 334 transitions. [2020-07-19 21:30:08,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-19 21:30:08,856 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,856 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-19 21:30:08,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-19 21:30:08,856 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2060048696, now seen corresponding path program 1 times [2020-07-19 21:30:08,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014444225] [2020-07-19 21:30:08,858 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,891 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014444225] [2020-07-19 21:30:08,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586220703] [2020-07-19 21:30:08,893 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,894 INFO L87 Difference]: Start difference. First operand 232 states and 334 transitions. Second operand 3 states. [2020-07-19 21:30:08,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,922 INFO L93 Difference]: Finished difference Result 524 states and 752 transitions. [2020-07-19 21:30:08,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-07-19 21:30:08,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,925 INFO L225 Difference]: With dead ends: 524 [2020-07-19 21:30:08,925 INFO L226 Difference]: Without dead ends: 306 [2020-07-19 21:30:08,927 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 [2020-07-19 21:30:08,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-07-19 21:30:08,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 304. [2020-07-19 21:30:08,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 304 states. [2020-07-19 21:30:08,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 422 transitions. [2020-07-19 21:30:08,942 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 422 transitions. Word has length 19 [2020-07-19 21:30:08,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:08,942 INFO L479 AbstractCegarLoop]: Abstraction has 304 states and 422 transitions. [2020-07-19 21:30:08,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:08,943 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 422 transitions. [2020-07-19 21:30:08,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 21:30:08,945 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:08,945 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] [2020-07-19 21:30:08,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-19 21:30:08,945 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:08,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:08,946 INFO L82 PathProgramCache]: Analyzing trace with hash 956242573, now seen corresponding path program 1 times [2020-07-19 21:30:08,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:08,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705214610] [2020-07-19 21:30:08,947 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:08,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:08,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:08,973 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705214610] [2020-07-19 21:30:08,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:08,973 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:08,973 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542017483] [2020-07-19 21:30:08,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:08,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:08,974 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:08,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:08,974 INFO L87 Difference]: Start difference. First operand 304 states and 422 transitions. Second operand 3 states. [2020-07-19 21:30:08,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:08,994 INFO L93 Difference]: Finished difference Result 456 states and 628 transitions. [2020-07-19 21:30:08,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:08,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-19 21:30:08,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:08,997 INFO L225 Difference]: With dead ends: 456 [2020-07-19 21:30:08,997 INFO L226 Difference]: Without dead ends: 314 [2020-07-19 21:30:08,998 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 [2020-07-19 21:30:08,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2020-07-19 21:30:09,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 312. [2020-07-19 21:30:09,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-07-19 21:30:09,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 422 transitions. [2020-07-19 21:30:09,011 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 422 transitions. Word has length 20 [2020-07-19 21:30:09,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:09,012 INFO L479 AbstractCegarLoop]: Abstraction has 312 states and 422 transitions. [2020-07-19 21:30:09,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:09,012 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 422 transitions. [2020-07-19 21:30:09,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 21:30:09,014 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:09,014 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] [2020-07-19 21:30:09,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-19 21:30:09,014 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:09,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:09,015 INFO L82 PathProgramCache]: Analyzing trace with hash 563215563, now seen corresponding path program 1 times [2020-07-19 21:30:09,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:09,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2327002] [2020-07-19 21:30:09,016 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:09,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:09,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2327002] [2020-07-19 21:30:09,057 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:09,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:09,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875883186] [2020-07-19 21:30:09,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:09,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:09,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:09,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:09,059 INFO L87 Difference]: Start difference. First operand 312 states and 422 transitions. Second operand 3 states. [2020-07-19 21:30:09,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:09,082 INFO L93 Difference]: Finished difference Result 524 states and 712 transitions. [2020-07-19 21:30:09,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:09,083 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-19 21:30:09,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:09,086 INFO L225 Difference]: With dead ends: 524 [2020-07-19 21:30:09,086 INFO L226 Difference]: Without dead ends: 522 [2020-07-19 21:30:09,087 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 [2020-07-19 21:30:09,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2020-07-19 21:30:09,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 456. [2020-07-19 21:30:09,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 456 states. [2020-07-19 21:30:09,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 456 states to 456 states and 598 transitions. [2020-07-19 21:30:09,104 INFO L78 Accepts]: Start accepts. Automaton has 456 states and 598 transitions. Word has length 20 [2020-07-19 21:30:09,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:09,104 INFO L479 AbstractCegarLoop]: Abstraction has 456 states and 598 transitions. [2020-07-19 21:30:09,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:09,104 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states and 598 transitions. [2020-07-19 21:30:09,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-19 21:30:09,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:09,106 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] [2020-07-19 21:30:09,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-19 21:30:09,107 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:09,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:09,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1243273933, now seen corresponding path program 1 times [2020-07-19 21:30:09,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:09,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531226410] [2020-07-19 21:30:09,108 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:09,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:09,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531226410] [2020-07-19 21:30:09,131 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:09,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:09,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287776371] [2020-07-19 21:30:09,132 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:09,132 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:09,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:09,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:09,133 INFO L87 Difference]: Start difference. First operand 456 states and 598 transitions. Second operand 3 states. [2020-07-19 21:30:09,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:09,159 INFO L93 Difference]: Finished difference Result 1020 states and 1320 transitions. [2020-07-19 21:30:09,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:09,159 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 20 [2020-07-19 21:30:09,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:09,163 INFO L225 Difference]: With dead ends: 1020 [2020-07-19 21:30:09,163 INFO L226 Difference]: Without dead ends: 586 [2020-07-19 21:30:09,164 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 [2020-07-19 21:30:09,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-07-19 21:30:09,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 584. [2020-07-19 21:30:09,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 584 states. [2020-07-19 21:30:09,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 726 transitions. [2020-07-19 21:30:09,186 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 726 transitions. Word has length 20 [2020-07-19 21:30:09,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:09,187 INFO L479 AbstractCegarLoop]: Abstraction has 584 states and 726 transitions. [2020-07-19 21:30:09,187 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:09,187 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 726 transitions. [2020-07-19 21:30:09,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:30:09,188 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:09,188 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] [2020-07-19 21:30:09,189 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-19 21:30:09,189 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:09,189 INFO L82 PathProgramCache]: Analyzing trace with hash 280029309, now seen corresponding path program 1 times [2020-07-19 21:30:09,189 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:09,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990281241] [2020-07-19 21:30:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:09,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:09,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990281241] [2020-07-19 21:30:09,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:09,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:09,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733827733] [2020-07-19 21:30:09,214 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:09,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:09,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:09,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:09,214 INFO L87 Difference]: Start difference. First operand 584 states and 726 transitions. Second operand 3 states. [2020-07-19 21:30:09,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:09,237 INFO L93 Difference]: Finished difference Result 876 states and 1080 transitions. [2020-07-19 21:30:09,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:09,238 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-19 21:30:09,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:09,241 INFO L225 Difference]: With dead ends: 876 [2020-07-19 21:30:09,241 INFO L226 Difference]: Without dead ends: 602 [2020-07-19 21:30:09,242 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 [2020-07-19 21:30:09,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2020-07-19 21:30:09,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 600. [2020-07-19 21:30:09,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 600 states. [2020-07-19 21:30:09,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 726 transitions. [2020-07-19 21:30:09,263 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 726 transitions. Word has length 21 [2020-07-19 21:30:09,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:09,264 INFO L479 AbstractCegarLoop]: Abstraction has 600 states and 726 transitions. [2020-07-19 21:30:09,264 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:09,264 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 726 transitions. [2020-07-19 21:30:09,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:30:09,266 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:09,266 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] [2020-07-19 21:30:09,266 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-19 21:30:09,266 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:09,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:09,267 INFO L82 PathProgramCache]: Analyzing trace with hash -112997701, now seen corresponding path program 1 times [2020-07-19 21:30:09,267 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:09,267 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080694686] [2020-07-19 21:30:09,268 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:09,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:09,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080694686] [2020-07-19 21:30:09,291 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:09,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:09,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1046490422] [2020-07-19 21:30:09,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:09,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:09,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:09,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:09,293 INFO L87 Difference]: Start difference. First operand 600 states and 726 transitions. Second operand 3 states. [2020-07-19 21:30:09,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:09,326 INFO L93 Difference]: Finished difference Result 970 states and 1159 transitions. [2020-07-19 21:30:09,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:09,326 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-19 21:30:09,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:09,331 INFO L225 Difference]: With dead ends: 970 [2020-07-19 21:30:09,332 INFO L226 Difference]: Without dead ends: 968 [2020-07-19 21:30:09,332 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 [2020-07-19 21:30:09,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 968 states. [2020-07-19 21:30:09,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 968 to 904. [2020-07-19 21:30:09,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 904 states. [2020-07-19 21:30:09,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 904 states to 904 states and 1062 transitions. [2020-07-19 21:30:09,367 INFO L78 Accepts]: Start accepts. Automaton has 904 states and 1062 transitions. Word has length 21 [2020-07-19 21:30:09,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:09,367 INFO L479 AbstractCegarLoop]: Abstraction has 904 states and 1062 transitions. [2020-07-19 21:30:09,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:09,367 INFO L276 IsEmpty]: Start isEmpty. Operand 904 states and 1062 transitions. [2020-07-19 21:30:09,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-19 21:30:09,370 INFO L414 BasicCegarLoop]: Found error trace [2020-07-19 21:30:09,370 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] [2020-07-19 21:30:09,370 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-19 21:30:09,370 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-19 21:30:09,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-19 21:30:09,371 INFO L82 PathProgramCache]: Analyzing trace with hash 567060669, now seen corresponding path program 1 times [2020-07-19 21:30:09,371 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL_NO_AM [2020-07-19 21:30:09,371 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1843630534] [2020-07-19 21:30:09,372 INFO L95 rtionOrderModulation]: Keeping assertion order de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.tracecheck.ITraceCheckPreferences$AssertCodeBlockOrder@65fcfeee [2020-07-19 21:30:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-19 21:30:09,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-19 21:30:09,391 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1843630534] [2020-07-19 21:30:09,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-19 21:30:09,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-19 21:30:09,392 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058862093] [2020-07-19 21:30:09,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-19 21:30:09,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL_NO_AM [2020-07-19 21:30:09,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-19 21:30:09,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-19 21:30:09,393 INFO L87 Difference]: Start difference. First operand 904 states and 1062 transitions. Second operand 3 states. [2020-07-19 21:30:09,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-19 21:30:09,439 INFO L93 Difference]: Finished difference Result 1992 states and 2278 transitions. [2020-07-19 21:30:09,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-19 21:30:09,440 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-19 21:30:09,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-19 21:30:09,440 INFO L225 Difference]: With dead ends: 1992 [2020-07-19 21:30:09,440 INFO L226 Difference]: Without dead ends: 0 [2020-07-19 21:30:09,444 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 [2020-07-19 21:30:09,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-19 21:30:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-19 21:30:09,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-19 21:30:09,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-19 21:30:09,445 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-07-19 21:30:09,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-19 21:30:09,445 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-19 21:30:09,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-19 21:30:09,445 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-19 21:30:09,445 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-19 21:30:09,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-19 21:30:09,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-19 21:30:09,474 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-19 21:30:09,474 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:30:09,474 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-19 21:30:09,474 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-19 21:30:09,474 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-19 21:30:09,474 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-19 21:30:09,475 INFO L268 CegarLoopResult]: For program point L93(line 93) no Hoare annotation was computed. [2020-07-19 21:30:09,475 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 4 107) no Hoare annotation was computed. [2020-07-19 21:30:09,475 INFO L268 CegarLoopResult]: For program point L77-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,475 INFO L268 CegarLoopResult]: For program point L78(line 78) no Hoare annotation was computed. [2020-07-19 21:30:09,475 INFO L271 CegarLoopResult]: At program point L103(lines 5 107) the Hoare annotation is: true [2020-07-19 21:30:09,475 INFO L268 CegarLoopResult]: For program point L29(lines 29 31) no Hoare annotation was computed. [2020-07-19 21:30:09,475 INFO L268 CegarLoopResult]: For program point L62-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,475 INFO L268 CegarLoopResult]: For program point L87-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,476 INFO L268 CegarLoopResult]: For program point L54-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,476 INFO L268 CegarLoopResult]: For program point L46(lines 46 48) no Hoare annotation was computed. [2020-07-19 21:30:09,476 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 4 107) no Hoare annotation was computed. [2020-07-19 21:30:09,476 INFO L268 CegarLoopResult]: For program point L46-2(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,476 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 105) no Hoare annotation was computed. [2020-07-19 21:30:09,476 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 4 107) the Hoare annotation is: true [2020-07-19 21:30:09,476 INFO L268 CegarLoopResult]: For program point L88(line 88) no Hoare annotation was computed. [2020-07-19 21:30:09,477 INFO L268 CegarLoopResult]: For program point L72-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,477 INFO L271 CegarLoopResult]: At program point L97-1(lines 27 102) the Hoare annotation is: true [2020-07-19 21:30:09,477 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-07-19 21:30:09,477 INFO L268 CegarLoopResult]: For program point L98(line 98) no Hoare annotation was computed. [2020-07-19 21:30:09,477 INFO L264 CegarLoopResult]: At program point L98-1(lines 5 107) the Hoare annotation is: false [2020-07-19 21:30:09,477 INFO L268 CegarLoopResult]: For program point L82-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,477 INFO L268 CegarLoopResult]: For program point L66-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,477 INFO L268 CegarLoopResult]: For program point L58-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,478 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-19 21:30:09,478 INFO L268 CegarLoopResult]: For program point L50-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,478 INFO L268 CegarLoopResult]: For program point L92-1(lines 27 102) no Hoare annotation was computed. [2020-07-19 21:30:09,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.07 09:30:09 BoogieIcfgContainer [2020-07-19 21:30:09,489 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-19 21:30:09,492 INFO L168 Benchmark]: Toolchain (without parser) took 2767.56 ms. Allocated memory was 140.0 MB in the beginning and 243.8 MB in the end (delta: 103.8 MB). Free memory was 104.3 MB in the beginning and 204.2 MB in the end (delta: -99.9 MB). Peak memory consumption was 3.9 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:09,493 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-19 21:30:09,493 INFO L168 Benchmark]: CACSL2BoogieTranslator took 312.15 ms. Allocated memory is still 140.0 MB. Free memory was 103.9 MB in the beginning and 93.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:09,494 INFO L168 Benchmark]: Boogie Preprocessor took 156.90 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 93.8 MB in the beginning and 183.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:09,495 INFO L168 Benchmark]: RCFGBuilder took 390.05 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 167.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-07-19 21:30:09,496 INFO L168 Benchmark]: TraceAbstraction took 1899.45 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 166.3 MB in the beginning and 204.2 MB in the end (delta: -37.9 MB). Peak memory consumption was 933.5 kB. Max. memory is 7.1 GB. [2020-07-19 21:30:09,500 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 140.0 MB. Free memory was 123.1 MB in the beginning and 122.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 312.15 ms. Allocated memory is still 140.0 MB. Free memory was 103.9 MB in the beginning and 93.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 156.90 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 93.8 MB in the beginning and 183.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 390.05 ms. Allocated memory is still 205.0 MB. Free memory was 183.2 MB in the beginning and 167.0 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1899.45 ms. Allocated memory was 205.0 MB in the beginning and 243.8 MB in the end (delta: 38.8 MB). Free memory was 166.3 MB in the beginning and 204.2 MB in the end (delta: -37.9 MB). Peak memory consumption was 933.5 kB. 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: 1.7s, OverallIterations: 17, TraceHistogramMax: 1, AutomataDifference: 0.5s, 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, 0.2s 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...