/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks NOT_INCREMENTALLY -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 11:43:59,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 11:43:59,986 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 11:44:00,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 11:44:00,006 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 11:44:00,008 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 11:44:00,010 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 11:44:00,020 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 11:44:00,025 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 11:44:00,029 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 11:44:00,030 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 11:44:00,032 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 11:44:00,032 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 11:44:00,034 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 11:44:00,036 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 11:44:00,037 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 11:44:00,038 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 11:44:00,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 11:44:00,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 11:44:00,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 11:44:00,051 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 11:44:00,055 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 11:44:00,056 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 11:44:00,057 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 11:44:00,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-21 11:44:00,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-21 11:44:00,059 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-21 11:44:00,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-21 11:44:00,062 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-21 11:44:00,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-21 11:44:00,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-21 11:44:00,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-21 11:44:00,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-21 11:44:00,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-21 11:44:00,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-21 11:44:00,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-21 11:44:00,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-21 11:44:00,070 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-21 11:44:00,070 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 11:44:00,071 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 11:44:00,072 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 11:44:00,073 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 [2020-07-21 11:44:00,111 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 11:44:00,111 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 11:44:00,114 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 11:44:00,114 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 11:44:00,114 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 11:44:00,115 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 11:44:00,115 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 11:44:00,115 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 11:44:00,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 11:44:00,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 11:44:00,116 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 11:44:00,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 11:44:00,116 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 11:44:00,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 11:44:00,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 11:44:00,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 11:44:00,117 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 11:44:00,117 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 11:44:00,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 11:44:00,118 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 11:44:00,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 11:44:00,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 11:44:00,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 11:44:00,119 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 11:44:00,119 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 11:44:00,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 11:44:00,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:00,120 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 11:44:00,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 11:44:00,120 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> NOT_INCREMENTALLY [2020-07-21 11:44:00,396 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 11:44:00,411 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 11:44:00,415 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 11:44:00,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 11:44:00,417 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 11:44:00,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-07-21 11:44:00,482 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0ca7fe7/9599066c2f5d4426840c8676e46f8923/FLAG0d05c2dd0 [2020-07-21 11:44:00,965 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 11:44:00,966 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-07-21 11:44:00,982 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0ca7fe7/9599066c2f5d4426840c8676e46f8923/FLAG0d05c2dd0 [2020-07-21 11:44:01,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0ca7fe7/9599066c2f5d4426840c8676e46f8923 [2020-07-21 11:44:01,317 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 11:44:01,319 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 11:44:01,320 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 11:44:01,320 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 11:44:01,324 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 11:44:01,325 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,327 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1264fabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01, skipping insertion in model container [2020-07-21 11:44:01,328 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 11:44:01,362 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 11:44:01,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:44:01,600 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 11:44:01,634 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 11:44:01,649 INFO L208 MainTranslator]: Completed translation [2020-07-21 11:44:01,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01 WrapperNode [2020-07-21 11:44:01,650 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 11:44:01,651 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 11:44:01,651 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 11:44:01,651 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 11:44:01,750 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,750 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,757 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,757 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,765 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,770 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (1/1) ... [2020-07-21 11:44:01,777 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 11:44:01,783 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 11:44:01,784 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 11:44:01,784 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 11:44:01,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (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 [2020-07-21 11:44:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 11:44:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 11:44:01,845 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-21 11:44:01,846 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 11:44:01,846 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 11:44:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-21 11:44:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-21 11:44:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 11:44:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-21 11:44:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 11:44:01,847 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 11:44:01,848 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 11:44:02,257 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 11:44:02,257 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-21 11:44:02,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:44:02 BoogieIcfgContainer [2020-07-21 11:44:02,269 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 11:44:02,270 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 11:44:02,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 11:44:02,276 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 11:44:02,277 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 11:44:01" (1/3) ... [2020-07-21 11:44:02,278 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa8c783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:44:02, skipping insertion in model container [2020-07-21 11:44:02,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 11:44:01" (2/3) ... [2020-07-21 11:44:02,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4aa8c783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 11:44:02, skipping insertion in model container [2020-07-21 11:44:02,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 11:44:02" (3/3) ... [2020-07-21 11:44:02,282 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-07-21 11:44:02,301 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 11:44:02,308 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-07-21 11:44:02,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-07-21 11:44:02,349 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 11:44:02,349 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 11:44:02,349 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 11:44:02,349 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 11:44:02,350 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 11:44:02,350 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 11:44:02,350 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 11:44:02,350 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 11:44:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-07-21 11:44:02,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:44:02,383 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:02,384 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:02,386 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:02,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:02,393 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-07-21 11:44:02,401 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:02,401 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345216460] [2020-07-21 11:44:02,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:02,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:02,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 70 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:44:02,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:02,619 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:02,629 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:02,655 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:02,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:02,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345216460] [2020-07-21 11:44:02,658 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:02,658 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:02,659 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347609782] [2020-07-21 11:44:02,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:02,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:02,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:02,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:02,677 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 4 states. [2020-07-21 11:44:02,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:02,886 INFO L93 Difference]: Finished difference Result 129 states and 172 transitions. [2020-07-21 11:44:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:02,888 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 11:44:02,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:02,901 INFO L225 Difference]: With dead ends: 129 [2020-07-21 11:44:02,902 INFO L226 Difference]: Without dead ends: 113 [2020-07-21 11:44:02,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:02,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-07-21 11:44:02,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-07-21 11:44:02,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-21 11:44:02,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-07-21 11:44:02,960 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-07-21 11:44:02,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:02,961 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-07-21 11:44:02,961 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:02,961 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-07-21 11:44:02,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 11:44:02,962 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:02,962 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:03,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:03,178 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:03,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:03,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-07-21 11:44:03,179 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:03,180 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1557996926] [2020-07-21 11:44:03,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:03,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:03,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:44:03,224 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:03,240 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:03,259 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:03,260 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:03,260 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1557996926] [2020-07-21 11:44:03,262 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:03,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:03,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1701250040] [2020-07-21 11:44:03,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:03,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:03,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:03,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:03,267 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 4 states. [2020-07-21 11:44:03,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:03,377 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-07-21 11:44:03,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:44:03,378 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 12 [2020-07-21 11:44:03,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:03,379 INFO L225 Difference]: With dead ends: 69 [2020-07-21 11:44:03,379 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 11:44:03,381 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:03,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 11:44:03,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-07-21 11:44:03,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 11:44:03,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-07-21 11:44:03,391 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-07-21 11:44:03,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:03,392 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-07-21 11:44:03,392 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:03,392 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-07-21 11:44:03,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-21 11:44:03,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:03,393 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:03,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:03,604 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:03,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:03,606 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-07-21 11:44:03,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:03,606 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [523364021] [2020-07-21 11:44:03,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:03,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:03,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 73 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:44:03,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:03,677 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:03,682 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:03,684 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:03,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:03,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:03,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [523364021] [2020-07-21 11:44:03,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:03,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:03,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914179146] [2020-07-21 11:44:03,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:03,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:03,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:03,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:03,701 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 4 states. [2020-07-21 11:44:03,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:03,793 INFO L93 Difference]: Finished difference Result 109 states and 115 transitions. [2020-07-21 11:44:03,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:03,794 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-07-21 11:44:03,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:03,795 INFO L225 Difference]: With dead ends: 109 [2020-07-21 11:44:03,795 INFO L226 Difference]: Without dead ends: 107 [2020-07-21 11:44:03,796 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:03,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-07-21 11:44:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 70. [2020-07-21 11:44:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-07-21 11:44:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-07-21 11:44:03,806 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-07-21 11:44:03,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:03,807 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-07-21 11:44:03,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-07-21 11:44:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 11:44:03,808 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:03,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:04,021 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:04,022 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:04,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:04,023 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-07-21 11:44:04,023 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:04,023 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236768533] [2020-07-21 11:44:04,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:04,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:04,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:44:04,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:04,079 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:04,094 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:04,095 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:04,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236768533] [2020-07-21 11:44:04,095 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:04,095 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:44:04,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584066873] [2020-07-21 11:44:04,096 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:44:04,097 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:04,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:44:04,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:04,098 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 5 states. [2020-07-21 11:44:04,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:04,182 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-07-21 11:44:04,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:04,183 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-21 11:44:04,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:04,184 INFO L225 Difference]: With dead ends: 71 [2020-07-21 11:44:04,184 INFO L226 Difference]: Without dead ends: 69 [2020-07-21 11:44:04,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:04,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-21 11:44:04,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-07-21 11:44:04,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-07-21 11:44:04,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-07-21 11:44:04,193 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-07-21 11:44:04,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:04,193 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-07-21 11:44:04,193 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:44:04,193 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-07-21 11:44:04,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-21 11:44:04,194 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:04,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:04,395 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:04,396 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:04,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:04,396 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-07-21 11:44:04,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:04,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [974002206] [2020-07-21 11:44:04,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:04,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:04,432 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:44:04,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:04,445 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:04,447 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:04,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:04,454 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [974002206] [2020-07-21 11:44:04,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:04,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:44:04,455 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145646285] [2020-07-21 11:44:04,455 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:44:04,456 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:04,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:44:04,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:04,456 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 5 states. [2020-07-21 11:44:04,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:04,543 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-07-21 11:44:04,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:04,544 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-21 11:44:04,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:04,545 INFO L225 Difference]: With dead ends: 69 [2020-07-21 11:44:04,545 INFO L226 Difference]: Without dead ends: 67 [2020-07-21 11:44:04,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:04,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-21 11:44:04,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-07-21 11:44:04,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-07-21 11:44:04,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-07-21 11:44:04,552 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-07-21 11:44:04,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:04,553 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-07-21 11:44:04,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:44:04,553 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-07-21 11:44:04,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:44:04,554 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:04,554 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:04,766 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:04,767 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:04,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:04,768 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-07-21 11:44:04,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:04,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77859074] [2020-07-21 11:44:04,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:04,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:04,808 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:44:04,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:04,826 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:04,827 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:04,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:04,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:04,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77859074] [2020-07-21 11:44:04,837 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:04,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:44:04,837 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314333377] [2020-07-21 11:44:04,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:44:04,838 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:04,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:44:04,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:04,841 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 5 states. [2020-07-21 11:44:04,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:04,977 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-07-21 11:44:04,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:04,979 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-07-21 11:44:04,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:04,980 INFO L225 Difference]: With dead ends: 112 [2020-07-21 11:44:04,981 INFO L226 Difference]: Without dead ends: 110 [2020-07-21 11:44:04,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:04,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-07-21 11:44:04,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-07-21 11:44:04,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 11:44:04,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-07-21 11:44:04,996 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-07-21 11:44:04,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:04,996 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-07-21 11:44:04,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:44:05,000 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-07-21 11:44:05,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:44:05,000 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:05,000 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:05,201 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:05,202 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:05,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:05,203 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-07-21 11:44:05,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:05,204 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [23844854] [2020-07-21 11:44:05,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:05,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:05,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 90 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:44:05,242 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:05,253 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:05,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:05,264 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:05,264 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [23844854] [2020-07-21 11:44:05,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:05,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:05,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1309019832] [2020-07-21 11:44:05,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:05,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:05,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:05,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:05,266 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 4 states. [2020-07-21 11:44:05,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:05,328 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-07-21 11:44:05,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:44:05,328 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-21 11:44:05,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:05,329 INFO L225 Difference]: With dead ends: 65 [2020-07-21 11:44:05,329 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 11:44:05,330 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:05,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 11:44:05,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-07-21 11:44:05,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-21 11:44:05,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-07-21 11:44:05,336 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-07-21 11:44:05,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:05,337 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-07-21 11:44:05,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:05,337 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-07-21 11:44:05,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-07-21 11:44:05,338 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:05,338 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:05,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:05,553 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:05,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:05,554 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-07-21 11:44:05,555 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:05,555 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787308601] [2020-07-21 11:44:05,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:05,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:05,600 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:44:05,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:05,618 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:05,620 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:05,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:05,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:05,626 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787308601] [2020-07-21 11:44:05,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:05,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:05,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32715004] [2020-07-21 11:44:05,627 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:05,627 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:05,627 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:05,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:05,628 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 4 states. [2020-07-21 11:44:05,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:05,673 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-07-21 11:44:05,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:44:05,674 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-07-21 11:44:05,674 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:05,675 INFO L225 Difference]: With dead ends: 61 [2020-07-21 11:44:05,675 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 11:44:05,676 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:05,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 11:44:05,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-07-21 11:44:05,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 11:44:05,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-07-21 11:44:05,681 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-07-21 11:44:05,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:05,682 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-07-21 11:44:05,682 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:05,682 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-07-21 11:44:05,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:44:05,683 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:05,683 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:05,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:05,897 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:05,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:05,897 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-07-21 11:44:05,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:05,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [400430962] [2020-07-21 11:44:05,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:05,929 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:44:05,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:05,986 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:05,988 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:05,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:05,999 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:06,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [400430962] [2020-07-21 11:44:06,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:06,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:44:06,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1178494750] [2020-07-21 11:44:06,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:44:06,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:06,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:44:06,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:06,003 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 6 states. [2020-07-21 11:44:06,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:06,162 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2020-07-21 11:44:06,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:44:06,163 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-07-21 11:44:06,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:06,166 INFO L225 Difference]: With dead ends: 130 [2020-07-21 11:44:06,166 INFO L226 Difference]: Without dead ends: 128 [2020-07-21 11:44:06,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:44:06,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-07-21 11:44:06,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 61. [2020-07-21 11:44:06,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 11:44:06,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-07-21 11:44:06,173 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 17 [2020-07-21 11:44:06,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:06,174 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-07-21 11:44:06,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:44:06,174 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-07-21 11:44:06,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:44:06,175 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:06,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:06,387 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:06,388 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:06,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:06,389 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-07-21 11:44:06,389 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:06,390 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308912831] [2020-07-21 11:44:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:06,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:44:06,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:06,449 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:06,451 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:06,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:06,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:06,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308912831] [2020-07-21 11:44:06,463 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:06,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:44:06,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196685165] [2020-07-21 11:44:06,464 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:44:06,464 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:06,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:44:06,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:06,465 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 5 states. [2020-07-21 11:44:06,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:06,544 INFO L93 Difference]: Finished difference Result 78 states and 85 transitions. [2020-07-21 11:44:06,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:06,545 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 11:44:06,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:06,545 INFO L225 Difference]: With dead ends: 78 [2020-07-21 11:44:06,546 INFO L226 Difference]: Without dead ends: 76 [2020-07-21 11:44:06,546 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:06,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-21 11:44:06,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 59. [2020-07-21 11:44:06,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-07-21 11:44:06,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 64 transitions. [2020-07-21 11:44:06,551 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 64 transitions. Word has length 17 [2020-07-21 11:44:06,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:06,552 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 64 transitions. [2020-07-21 11:44:06,552 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:44:06,552 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 64 transitions. [2020-07-21 11:44:06,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-21 11:44:06,553 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:06,553 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:06,762 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:06,763 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:06,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:06,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-07-21 11:44:06,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:06,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589091037] [2020-07-21 11:44:06,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:06,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:06,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:44:06,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:06,812 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:06,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:06,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:06,829 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589091037] [2020-07-21 11:44:06,829 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:06,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:44:06,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553177708] [2020-07-21 11:44:06,830 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:44:06,830 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:06,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:44:06,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:06,831 INFO L87 Difference]: Start difference. First operand 59 states and 64 transitions. Second operand 5 states. [2020-07-21 11:44:06,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:06,884 INFO L93 Difference]: Finished difference Result 59 states and 64 transitions. [2020-07-21 11:44:06,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:06,885 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-07-21 11:44:06,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:06,886 INFO L225 Difference]: With dead ends: 59 [2020-07-21 11:44:06,886 INFO L226 Difference]: Without dead ends: 57 [2020-07-21 11:44:06,887 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:06,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-07-21 11:44:06,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-07-21 11:44:06,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 11:44:06,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-07-21 11:44:06,892 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 17 [2020-07-21 11:44:06,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:06,892 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-07-21 11:44:06,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:44:06,892 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-07-21 11:44:06,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:44:06,894 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:06,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:07,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:07,099 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:07,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:07,100 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-07-21 11:44:07,100 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:07,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725399638] [2020-07-21 11:44:07,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:07,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:07,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:44:07,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:07,194 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:07,197 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:07,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:07,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:07,204 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725399638] [2020-07-21 11:44:07,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:07,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:44:07,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913236727] [2020-07-21 11:44:07,205 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:44:07,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:07,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:44:07,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:07,206 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 6 states. [2020-07-21 11:44:07,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:07,317 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2020-07-21 11:44:07,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:44:07,317 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 11:44:07,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:07,318 INFO L225 Difference]: With dead ends: 108 [2020-07-21 11:44:07,318 INFO L226 Difference]: Without dead ends: 106 [2020-07-21 11:44:07,319 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:44:07,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-21 11:44:07,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 57. [2020-07-21 11:44:07,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 11:44:07,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 62 transitions. [2020-07-21 11:44:07,324 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 62 transitions. Word has length 18 [2020-07-21 11:44:07,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:07,324 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 62 transitions. [2020-07-21 11:44:07,324 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:44:07,324 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 62 transitions. [2020-07-21 11:44:07,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:44:07,325 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:07,325 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:07,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:07,526 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:07,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:07,527 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-07-21 11:44:07,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:07,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074738987] [2020-07-21 11:44:07,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:07,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:07,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 11:44:07,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:07,586 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:07,592 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:07,592 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:07,592 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074738987] [2020-07-21 11:44:07,593 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:07,593 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 11:44:07,593 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654812216] [2020-07-21 11:44:07,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 11:44:07,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:07,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 11:44:07,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:07,594 INFO L87 Difference]: Start difference. First operand 57 states and 62 transitions. Second operand 5 states. [2020-07-21 11:44:07,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:07,661 INFO L93 Difference]: Finished difference Result 80 states and 87 transitions. [2020-07-21 11:44:07,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 11:44:07,662 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-07-21 11:44:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:07,663 INFO L225 Difference]: With dead ends: 80 [2020-07-21 11:44:07,663 INFO L226 Difference]: Without dead ends: 78 [2020-07-21 11:44:07,663 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-21 11:44:07,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 55. [2020-07-21 11:44:07,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-21 11:44:07,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-07-21 11:44:07,668 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 18 [2020-07-21 11:44:07,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:07,668 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-07-21 11:44:07,668 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 11:44:07,668 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-07-21 11:44:07,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:44:07,669 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:07,669 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:07,880 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:07,881 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:07,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:07,882 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-07-21 11:44:07,882 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:07,883 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1949463999] [2020-07-21 11:44:07,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:07,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:44:07,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:07,980 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:07,984 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:07,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:07,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:07,994 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1949463999] [2020-07-21 11:44:07,994 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:07,995 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:44:07,995 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487942649] [2020-07-21 11:44:07,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:44:07,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:07,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:44:07,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:07,997 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 6 states. [2020-07-21 11:44:08,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:08,111 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-07-21 11:44:08,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:44:08,111 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 11:44:08,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:08,112 INFO L225 Difference]: With dead ends: 97 [2020-07-21 11:44:08,113 INFO L226 Difference]: Without dead ends: 95 [2020-07-21 11:44:08,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:44:08,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-07-21 11:44:08,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 63. [2020-07-21 11:44:08,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-21 11:44:08,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-07-21 11:44:08,119 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 18 [2020-07-21 11:44:08,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:08,119 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-07-21 11:44:08,119 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:44:08,119 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-07-21 11:44:08,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-07-21 11:44:08,120 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:08,120 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:08,331 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:08,332 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:08,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:08,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-07-21 11:44:08,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:08,332 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170562456] [2020-07-21 11:44:08,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:08,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:08,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:44:08,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:08,415 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:08,416 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:08,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:08,424 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:08,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170562456] [2020-07-21 11:44:08,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:08,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:44:08,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263590804] [2020-07-21 11:44:08,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:44:08,427 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:08,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:44:08,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:08,427 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 6 states. [2020-07-21 11:44:08,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:08,538 INFO L93 Difference]: Finished difference Result 74 states and 81 transitions. [2020-07-21 11:44:08,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:44:08,538 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-07-21 11:44:08,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:08,540 INFO L225 Difference]: With dead ends: 74 [2020-07-21 11:44:08,540 INFO L226 Difference]: Without dead ends: 70 [2020-07-21 11:44:08,541 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:44:08,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-07-21 11:44:08,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-07-21 11:44:08,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-07-21 11:44:08,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 71 transitions. [2020-07-21 11:44:08,546 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 71 transitions. Word has length 18 [2020-07-21 11:44:08,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:08,547 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 71 transitions. [2020-07-21 11:44:08,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:44:08,547 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 71 transitions. [2020-07-21 11:44:08,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-21 11:44:08,547 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:08,548 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:08,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:08,759 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:08,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:08,760 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-07-21 11:44:08,760 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:08,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [357020800] [2020-07-21 11:44:08,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:08,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:08,806 INFO L263 TraceCheckSpWp]: Trace formula consists of 99 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 11:44:08,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:08,871 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:08,875 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:08,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:08,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:08,889 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [357020800] [2020-07-21 11:44:08,890 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:08,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:44:08,890 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767497221] [2020-07-21 11:44:08,892 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:44:08,893 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:08,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:44:08,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:08,893 INFO L87 Difference]: Start difference. First operand 64 states and 71 transitions. Second operand 6 states. [2020-07-21 11:44:09,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:09,014 INFO L93 Difference]: Finished difference Result 91 states and 100 transitions. [2020-07-21 11:44:09,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 11:44:09,015 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-21 11:44:09,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:09,015 INFO L225 Difference]: With dead ends: 91 [2020-07-21 11:44:09,016 INFO L226 Difference]: Without dead ends: 89 [2020-07-21 11:44:09,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:44:09,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-07-21 11:44:09,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 67. [2020-07-21 11:44:09,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 11:44:09,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 74 transitions. [2020-07-21 11:44:09,021 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 74 transitions. Word has length 19 [2020-07-21 11:44:09,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:09,022 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 74 transitions. [2020-07-21 11:44:09,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:44:09,022 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 74 transitions. [2020-07-21 11:44:09,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-21 11:44:09,025 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:09,026 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] [2020-07-21 11:44:09,226 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:09,227 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:09,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:09,227 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-07-21 11:44:09,228 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:09,228 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066490803] [2020-07-21 11:44:09,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:09,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2020-07-21 11:44:09,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:09,290 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:09,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:09,302 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066490803] [2020-07-21 11:44:09,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:09,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-21 11:44:09,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35427484] [2020-07-21 11:44:09,303 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-21 11:44:09,303 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:09,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-21 11:44:09,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-07-21 11:44:09,304 INFO L87 Difference]: Start difference. First operand 67 states and 74 transitions. Second operand 6 states. [2020-07-21 11:44:09,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:09,407 INFO L93 Difference]: Finished difference Result 68 states and 75 transitions. [2020-07-21 11:44:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-21 11:44:09,408 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2020-07-21 11:44:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:09,408 INFO L225 Difference]: With dead ends: 68 [2020-07-21 11:44:09,409 INFO L226 Difference]: Without dead ends: 66 [2020-07-21 11:44:09,409 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-07-21 11:44:09,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-21 11:44:09,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-07-21 11:44:09,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 11:44:09,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 72 transitions. [2020-07-21 11:44:09,415 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 72 transitions. Word has length 20 [2020-07-21 11:44:09,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:09,416 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 72 transitions. [2020-07-21 11:44:09,416 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-21 11:44:09,416 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 72 transitions. [2020-07-21 11:44:09,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 11:44:09,416 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:09,417 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] [2020-07-21 11:44:09,627 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:09,628 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:09,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:09,629 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-07-21 11:44:09,629 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:09,630 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209579588] [2020-07-21 11:44:09,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:09,664 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 11:44:09,664 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:09,670 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:09,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:09,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:09,677 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209579588] [2020-07-21 11:44:09,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:09,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 11:44:09,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50692821] [2020-07-21 11:44:09,678 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 11:44:09,678 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:09,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 11:44:09,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-21 11:44:09,679 INFO L87 Difference]: Start difference. First operand 65 states and 72 transitions. Second operand 4 states. [2020-07-21 11:44:09,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:09,729 INFO L93 Difference]: Finished difference Result 65 states and 72 transitions. [2020-07-21 11:44:09,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 11:44:09,729 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-21 11:44:09,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:09,730 INFO L225 Difference]: With dead ends: 65 [2020-07-21 11:44:09,730 INFO L226 Difference]: Without dead ends: 61 [2020-07-21 11:44:09,731 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-21 11:44:09,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-07-21 11:44:09,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-07-21 11:44:09,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-21 11:44:09,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 68 transitions. [2020-07-21 11:44:09,737 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 68 transitions. Word has length 21 [2020-07-21 11:44:09,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:09,737 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 68 transitions. [2020-07-21 11:44:09,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 11:44:09,737 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 68 transitions. [2020-07-21 11:44:09,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:44:09,738 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:09,738 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:09,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:09,950 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:09,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:09,951 INFO L82 PathProgramCache]: Analyzing trace with hash 807498791, now seen corresponding path program 1 times [2020-07-21 11:44:09,951 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:09,952 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599358607] [2020-07-21 11:44:09,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:09,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:09,987 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:44:09,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:10,064 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:10,066 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:10,074 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:44:10,083 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:44:10,126 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:44:10,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599358607] [2020-07-21 11:44:10,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:44:10,127 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-21 11:44:10,127 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088219216] [2020-07-21 11:44:10,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:44:10,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:10,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:44:10,128 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:44:10,129 INFO L87 Difference]: Start difference. First operand 61 states and 68 transitions. Second operand 10 states. [2020-07-21 11:44:10,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:10,381 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2020-07-21 11:44:10,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-21 11:44:10,382 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 22 [2020-07-21 11:44:10,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:10,383 INFO L225 Difference]: With dead ends: 108 [2020-07-21 11:44:10,383 INFO L226 Difference]: Without dead ends: 106 [2020-07-21 11:44:10,383 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 32 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=160, Unknown=0, NotChecked=0, Total=240 [2020-07-21 11:44:10,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-07-21 11:44:10,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 57. [2020-07-21 11:44:10,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-07-21 11:44:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-07-21 11:44:10,389 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 22 [2020-07-21 11:44:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:10,389 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-07-21 11:44:10,389 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:44:10,389 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-07-21 11:44:10,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-07-21 11:44:10,390 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:10,390 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:10,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:10,603 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:10,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:10,603 INFO L82 PathProgramCache]: Analyzing trace with hash 1420576327, now seen corresponding path program 1 times [2020-07-21 11:44:10,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:10,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943473871] [2020-07-21 11:44:10,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:10,655 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:44:10,656 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:10,716 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:10,717 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:10,725 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:10,725 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:10,725 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943473871] [2020-07-21 11:44:10,725 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:10,726 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:44:10,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1424392754] [2020-07-21 11:44:10,726 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:44:10,726 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:10,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:44:10,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:44:10,727 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 8 states. [2020-07-21 11:44:10,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:10,904 INFO L93 Difference]: Finished difference Result 117 states and 131 transitions. [2020-07-21 11:44:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:44:10,904 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 22 [2020-07-21 11:44:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:10,905 INFO L225 Difference]: With dead ends: 117 [2020-07-21 11:44:10,905 INFO L226 Difference]: Without dead ends: 115 [2020-07-21 11:44:10,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:44:10,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-07-21 11:44:10,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 65. [2020-07-21 11:44:10,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 11:44:10,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 75 transitions. [2020-07-21 11:44:10,911 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 75 transitions. Word has length 22 [2020-07-21 11:44:10,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:10,912 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 75 transitions. [2020-07-21 11:44:10,912 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:44:10,912 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 75 transitions. [2020-07-21 11:44:10,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:44:10,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:10,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:11,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:11,119 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:11,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:11,120 INFO L82 PathProgramCache]: Analyzing trace with hash 396336034, now seen corresponding path program 1 times [2020-07-21 11:44:11,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:11,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503932946] [2020-07-21 11:44:11,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:11,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:11,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:44:11,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:11,218 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:11,223 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:11,230 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:11,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:11,231 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503932946] [2020-07-21 11:44:11,231 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:11,231 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:44:11,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672742995] [2020-07-21 11:44:11,232 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:44:11,232 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:11,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:44:11,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:44:11,233 INFO L87 Difference]: Start difference. First operand 65 states and 75 transitions. Second operand 8 states. [2020-07-21 11:44:11,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:11,355 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-07-21 11:44:11,356 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-21 11:44:11,356 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 11:44:11,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:11,357 INFO L225 Difference]: With dead ends: 104 [2020-07-21 11:44:11,357 INFO L226 Difference]: Without dead ends: 102 [2020-07-21 11:44:11,357 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:44:11,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-07-21 11:44:11,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 67. [2020-07-21 11:44:11,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 11:44:11,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 77 transitions. [2020-07-21 11:44:11,363 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 77 transitions. Word has length 23 [2020-07-21 11:44:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:11,363 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 77 transitions. [2020-07-21 11:44:11,364 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:44:11,364 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 77 transitions. [2020-07-21 11:44:11,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:44:11,364 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:11,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:11,575 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:11,575 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:11,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:11,576 INFO L82 PathProgramCache]: Analyzing trace with hash 444051284, now seen corresponding path program 1 times [2020-07-21 11:44:11,576 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:11,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605616981] [2020-07-21 11:44:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:11,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:11,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 124 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:44:11,614 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:11,685 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:11,686 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:11,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:11,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:11,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605616981] [2020-07-21 11:44:11,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:11,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-21 11:44:11,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288514422] [2020-07-21 11:44:11,699 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 11:44:11,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:11,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 11:44:11,699 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-07-21 11:44:11,700 INFO L87 Difference]: Start difference. First operand 67 states and 77 transitions. Second operand 8 states. [2020-07-21 11:44:11,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:11,834 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-07-21 11:44:11,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 11:44:11,836 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-21 11:44:11,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:11,837 INFO L225 Difference]: With dead ends: 84 [2020-07-21 11:44:11,837 INFO L226 Difference]: Without dead ends: 80 [2020-07-21 11:44:11,837 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-07-21 11:44:11,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-07-21 11:44:11,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 67. [2020-07-21 11:44:11,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-21 11:44:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 76 transitions. [2020-07-21 11:44:11,843 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 76 transitions. Word has length 23 [2020-07-21 11:44:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:11,843 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 76 transitions. [2020-07-21 11:44:11,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 11:44:11,843 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 76 transitions. [2020-07-21 11:44:11,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-21 11:44:11,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:11,844 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:12,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:12,056 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:12,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:12,056 INFO L82 PathProgramCache]: Analyzing trace with hash -743587193, now seen corresponding path program 1 times [2020-07-21 11:44:12,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:12,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712643252] [2020-07-21 11:44:12,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:12,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:12,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-21 11:44:12,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:12,174 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:12,176 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:12,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:12,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:44:12,191 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:44:12,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 11:44:12,243 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712643252] [2020-07-21 11:44:12,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:44:12,243 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5] total 10 [2020-07-21 11:44:12,243 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689645413] [2020-07-21 11:44:12,244 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:44:12,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:12,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:44:12,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:44:12,245 INFO L87 Difference]: Start difference. First operand 67 states and 76 transitions. Second operand 10 states. [2020-07-21 11:44:12,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:12,472 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-07-21 11:44:12,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-21 11:44:12,472 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 23 [2020-07-21 11:44:12,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:12,473 INFO L225 Difference]: With dead ends: 78 [2020-07-21 11:44:12,473 INFO L226 Difference]: Without dead ends: 76 [2020-07-21 11:44:12,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=200, Unknown=0, NotChecked=0, Total=306 [2020-07-21 11:44:12,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-21 11:44:12,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 65. [2020-07-21 11:44:12,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-07-21 11:44:12,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2020-07-21 11:44:12,479 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 23 [2020-07-21 11:44:12,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:12,479 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2020-07-21 11:44:12,479 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:44:12,479 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2020-07-21 11:44:12,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:44:12,480 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:12,480 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:12,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:12,688 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:12,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash -946140679, now seen corresponding path program 1 times [2020-07-21 11:44:12,689 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:12,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884918278] [2020-07-21 11:44:12,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:12,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:12,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:44:12,729 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:12,821 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:12,822 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:12,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:12,835 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 11:44:12,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884918278] [2020-07-21 11:44:12,835 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 11:44:12,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-07-21 11:44:12,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688223365] [2020-07-21 11:44:12,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-21 11:44:12,836 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:12,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-21 11:44:12,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2020-07-21 11:44:12,837 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand 10 states. [2020-07-21 11:44:13,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:13,067 INFO L93 Difference]: Finished difference Result 140 states and 159 transitions. [2020-07-21 11:44:13,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:44:13,067 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-21 11:44:13,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:13,068 INFO L225 Difference]: With dead ends: 140 [2020-07-21 11:44:13,068 INFO L226 Difference]: Without dead ends: 138 [2020-07-21 11:44:13,069 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=118, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:44:13,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-07-21 11:44:13,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 81. [2020-07-21 11:44:13,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-21 11:44:13,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 94 transitions. [2020-07-21 11:44:13,075 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 94 transitions. Word has length 27 [2020-07-21 11:44:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:13,076 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 94 transitions. [2020-07-21 11:44:13,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-21 11:44:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 94 transitions. [2020-07-21 11:44:13,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:44:13,076 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:13,077 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:13,288 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:13,289 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:13,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:13,290 INFO L82 PathProgramCache]: Analyzing trace with hash -183296883, now seen corresponding path program 1 times [2020-07-21 11:44:13,290 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:13,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669467784] [2020-07-21 11:44:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:13,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:13,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:44:13,329 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:13,457 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:13,459 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:13,470 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:13,470 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:44:13,477 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:44:13,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:44:13,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669467784] [2020-07-21 11:44:13,534 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:44:13,534 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-21 11:44:13,534 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283114027] [2020-07-21 11:44:13,535 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:44:13,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:13,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:44:13,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:44:13,536 INFO L87 Difference]: Start difference. First operand 81 states and 94 transitions. Second operand 12 states. [2020-07-21 11:44:13,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:13,839 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2020-07-21 11:44:13,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-21 11:44:13,840 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-21 11:44:13,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:13,841 INFO L225 Difference]: With dead ends: 127 [2020-07-21 11:44:13,841 INFO L226 Difference]: Without dead ends: 125 [2020-07-21 11:44:13,841 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2020-07-21 11:44:13,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2020-07-21 11:44:13,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 79. [2020-07-21 11:44:13,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-07-21 11:44:13,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 92 transitions. [2020-07-21 11:44:13,847 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 92 transitions. Word has length 27 [2020-07-21 11:44:13,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:13,848 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 92 transitions. [2020-07-21 11:44:13,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:44:13,848 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 92 transitions. [2020-07-21 11:44:13,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-21 11:44:13,848 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:13,849 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:14,049 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:14,050 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:14,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:14,050 INFO L82 PathProgramCache]: Analyzing trace with hash -135581633, now seen corresponding path program 1 times [2020-07-21 11:44:14,050 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:14,051 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352597066] [2020-07-21 11:44:14,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:14,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:14,086 INFO L263 TraceCheckSpWp]: Trace formula consists of 139 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-21 11:44:14,087 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:14,178 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:14,179 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:14,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:14,189 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:44:14,195 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:44:14,263 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-21 11:44:14,263 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352597066] [2020-07-21 11:44:14,264 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:44:14,264 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 5] total 12 [2020-07-21 11:44:14,264 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860453755] [2020-07-21 11:44:14,265 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-21 11:44:14,265 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:14,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-21 11:44:14,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-07-21 11:44:14,266 INFO L87 Difference]: Start difference. First operand 79 states and 92 transitions. Second operand 12 states. [2020-07-21 11:44:14,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:14,456 INFO L93 Difference]: Finished difference Result 94 states and 108 transitions. [2020-07-21 11:44:14,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 11:44:14,456 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-21 11:44:14,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:14,457 INFO L225 Difference]: With dead ends: 94 [2020-07-21 11:44:14,457 INFO L226 Difference]: Without dead ends: 88 [2020-07-21 11:44:14,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 39 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2020-07-21 11:44:14,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-07-21 11:44:14,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 75. [2020-07-21 11:44:14,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-07-21 11:44:14,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 87 transitions. [2020-07-21 11:44:14,463 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 87 transitions. Word has length 27 [2020-07-21 11:44:14,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:14,464 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 87 transitions. [2020-07-21 11:44:14,464 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-21 11:44:14,464 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 87 transitions. [2020-07-21 11:44:14,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-21 11:44:14,464 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 11:44:14,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 11:44:14,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:14,676 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr15ASSERT_VIOLATIONERROR_FUNCTION, mainErr16ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr13ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr14ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 11:44:14,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 11:44:14,677 INFO L82 PathProgramCache]: Analyzing trace with hash -868344476, now seen corresponding path program 1 times [2020-07-21 11:44:14,677 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 11:44:14,678 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1106476786] [2020-07-21 11:44:14,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-21 11:44:14,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 14 conjunts are in the unsatisfiable core [2020-07-21 11:44:14,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 11:44:14,867 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 11:44:14,869 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-21 11:44:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 11:44:14,880 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 11:44:14,887 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 11:44:14,964 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-07-21 11:44:14,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1106476786] [2020-07-21 11:44:14,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 11:44:14,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 5] total 14 [2020-07-21 11:44:14,964 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154248290] [2020-07-21 11:44:14,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 11:44:14,965 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 11:44:14,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 11:44:14,966 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=113, Unknown=0, NotChecked=0, Total=182 [2020-07-21 11:44:14,966 INFO L87 Difference]: Start difference. First operand 75 states and 87 transitions. Second operand 14 states. [2020-07-21 11:44:15,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 11:44:15,377 INFO L93 Difference]: Finished difference Result 141 states and 166 transitions. [2020-07-21 11:44:15,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-21 11:44:15,378 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-07-21 11:44:15,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 11:44:15,378 INFO L225 Difference]: With dead ends: 141 [2020-07-21 11:44:15,378 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 11:44:15,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 44 SyntacticMatches, 5 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-07-21 11:44:15,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 11:44:15,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 11:44:15,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 11:44:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 11:44:15,380 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-07-21 11:44:15,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 11:44:15,381 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 11:44:15,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 11:44:15,381 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 11:44:15,381 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 11:44:15,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 11:44:15,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 11:44:15,822 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 54 [2020-07-21 11:44:15,969 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 73 [2020-07-21 11:44:16,148 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 85 [2020-07-21 11:44:16,339 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification. DAG size of input: 94 DAG size of output: 80 [2020-07-21 11:44:16,547 WARN L193 SmtUtils]: Spent 195.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 24 [2020-07-21 11:44:16,842 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 11 [2020-07-21 11:44:17,253 WARN L193 SmtUtils]: Spent 408.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 13 [2020-07-21 11:44:17,717 WARN L193 SmtUtils]: Spent 461.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 18 [2020-07-21 11:44:17,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:44:17,721 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:44:17,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:44:17,721 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 11:44:17,722 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 11:44:17,722 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 11:44:17,722 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 11:44:17,722 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:44:17,722 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 11:44:17,722 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:44:17,722 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-07-21 11:44:17,723 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-07-21 11:44:17,724 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-07-21 11:44:17,724 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-07-21 11:44:17,724 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-07-21 11:44:17,724 INFO L264 CegarLoopResult]: At program point L326(lines 30 366) the Hoare annotation is: (let ((.cse0 (<= 1 main_~main__t~0)) (.cse1 (<= 1 main_~__VERIFIER_assert__cond~13))) (or (and (or (and (<= 0 main_~main__t~0) (<= main_~main__t~0 0)) (and (<= main_~main__t~0 main_~main__tagbuf_len~0) .cse0 (<= main_~main__t~0 1) .cse1)) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0))) (and (< main_~main__t~0 main_~main__tagbuf_len~0) .cse0 (<= 1 main_~__VERIFIER_assert__cond~17) .cse1))) [2020-07-21 11:44:17,724 INFO L264 CegarLoopResult]: At program point L194(lines 58 252) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0) (<= 1 main_~__VERIFIER_assert__cond~0)) [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-07-21 11:44:17,725 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 373) the Hoare annotation is: true [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-07-21 11:44:17,726 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-07-21 11:44:17,727 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-07-21 11:44:17,728 INFO L264 CegarLoopResult]: At program point L355(lines 281 362) the Hoare annotation is: (let ((.cse0 (<= 0 main_~main__t~0)) (.cse1 (<= 1 main_~__VERIFIER_assert__cond~13))) (or (and (< main_~main__t~0 main_~main__tagbuf_len~0) .cse0 (<= 1 main_~__VERIFIER_assert__cond~17) .cse1) (and .cse0 (<= main_~main__t~0 0) (<= 0 main_~main__tagbuf_len~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) .cse1))) [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-07-21 11:44:17,728 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L264 CegarLoopResult]: At program point L248(lines 100 250) the Hoare annotation is: (and (<= 1 main_~__VERIFIER_assert__cond~1) (<= main_~main__t~0 main_~main__tagbuf_len~0) (<= 1 main_~main__t~0) (not (= main_~main__tagbuf_len~0 main_~main__t~0)) (<= 1 main_~__VERIFIER_assert__cond~0)) [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-07-21 11:44:17,729 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-07-21 11:44:17,730 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-07-21 11:44:17,730 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-07-21 11:44:17,730 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-07-21 11:44:17,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 11:44:17 BoogieIcfgContainer [2020-07-21 11:44:17,749 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 11:44:17,751 INFO L168 Benchmark]: Toolchain (without parser) took 16432.40 ms. Allocated memory was 139.5 MB in the beginning and 317.2 MB in the end (delta: 177.7 MB). Free memory was 104.1 MB in the beginning and 204.1 MB in the end (delta: -100.0 MB). Peak memory consumption was 168.3 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:17,751 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-21 11:44:17,752 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.53 ms. Allocated memory is still 139.5 MB. Free memory was 103.7 MB in the beginning and 91.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:17,752 INFO L168 Benchmark]: Boogie Preprocessor took 126.18 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 91.0 MB in the beginning and 181.4 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:17,753 INFO L168 Benchmark]: RCFGBuilder took 486.04 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 155.8 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:17,753 INFO L168 Benchmark]: TraceAbstraction took 15478.58 ms. Allocated memory was 203.9 MB in the beginning and 317.2 MB in the end (delta: 113.2 MB). Free memory was 155.8 MB in the beginning and 204.1 MB in the end (delta: -48.3 MB). Peak memory consumption was 155.6 MB. Max. memory is 7.1 GB. [2020-07-21 11:44:17,756 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 139.5 MB. Free memory was 122.6 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.53 ms. Allocated memory is still 139.5 MB. Free memory was 103.7 MB in the beginning and 91.0 MB in the end (delta: 12.7 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.18 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 91.0 MB in the beginning and 181.4 MB in the end (delta: -90.4 MB). Peak memory consumption was 13.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 486.04 ms. Allocated memory is still 203.9 MB. Free memory was 181.4 MB in the beginning and 155.8 MB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15478.58 ms. Allocated memory was 203.9 MB in the beginning and 317.2 MB in the end (delta: 113.2 MB). Free memory was 155.8 MB in the beginning and 204.1 MB in the end (delta: -48.3 MB). Peak memory consumption was 155.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 42]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 337]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 349]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 153]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 175]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 296]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 187]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 223]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 308]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 277]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 113]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 235]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 71]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 141]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 125]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 83]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 54]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 17 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: ((((0 <= main__t && main__t <= 0) || (((main__t <= main__tagbuf_len && 1 <= main__t) && main__t <= 1) && 1 <= __VERIFIER_assert__cond)) && 0 <= main__tagbuf_len) && !(main__tagbuf_len == main__t)) || (((main__t < main__tagbuf_len && 1 <= main__t) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((1 <= __VERIFIER_assert__cond && main__t <= main__tagbuf_len) && 1 <= main__t) && 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: (((1 <= __VERIFIER_assert__cond && main__t <= main__tagbuf_len) && 1 <= main__t) && !(main__tagbuf_len == main__t)) && 1 <= __VERIFIER_assert__cond - InvariantResult [Line: 281]: Loop Invariant Derived loop invariant: (((main__t < main__tagbuf_len && 0 <= main__t) && 1 <= __VERIFIER_assert__cond) && 1 <= __VERIFIER_assert__cond) || ((((0 <= main__t && main__t <= 0) && 0 <= main__tagbuf_len) && !(main__tagbuf_len == main__t)) && 1 <= __VERIFIER_assert__cond) - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 80 locations, 17 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 13.2s, OverallIterations: 27, TraceHistogramMax: 2, AutomataDifference: 3.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1154 SDtfs, 2597 SDslu, 2195 SDs, 0 SdLazy, 2526 SolverSat, 315 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 689 GetRequests, 479 SyntacticMatches, 19 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 649 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=81occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 27 MinimizatonAttempts, 622 StatesRemovedByMinimization, 23 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 36 NumberOfFragments, 109 HoareAnnotationTreeSize, 9 FomulaSimplifications, 2773163136 FormulaSimplificationTreeSizeReduction, 0.7s HoareSimplificationTime, 9 FomulaSimplificationsInter, 64093219 FormulaSimplificationTreeSizeReductionInter, 1.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.1s InterpolantComputationTime, 523 NumberOfCodeBlocks, 523 NumberOfCodeBlocksAsserted, 27 NumberOfCheckSat, 621 ConstructedInterpolants, 0 QuantifiedInterpolants, 65277 SizeOfPredicates, 105 NumberOfNonLiveVariables, 2813 ConjunctsInSsa, 204 ConjunctsInUnsatCore, 32 InterpolantComputations, 22 PerfectInterpolantSequences, 12/48 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...