/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration false -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-eb0fd7c [2020-09-21 10:29:27,351 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 10:29:27,356 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 10:29:27,403 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 10:29:27,404 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 10:29:27,409 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 10:29:27,411 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 10:29:27,416 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 10:29:27,420 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 10:29:27,424 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 10:29:27,425 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 10:29:27,426 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 10:29:27,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 10:29:27,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 10:29:27,430 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 10:29:27,431 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 10:29:27,433 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 10:29:27,435 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 10:29:27,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 10:29:27,442 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 10:29:27,446 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 10:29:27,448 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 10:29:27,450 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 10:29:27,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 10:29:27,456 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 10:29:27,457 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 10:29:27,457 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 10:29:27,460 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 10:29:27,460 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 10:29:27,471 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 10:29:27,471 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 10:29:27,472 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 10:29:27,473 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 10:29:27,474 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 10:29:27,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 10:29:27,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 10:29:27,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 10:29:27,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 10:29:27,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 10:29:27,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 10:29:27,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 10:29:27,480 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 10:29:27,506 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 10:29:27,507 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 10:29:27,508 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 10:29:27,508 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 10:29:27,508 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 10:29:27,509 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 10:29:27,509 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 10:29:27,509 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 10:29:27,509 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 10:29:27,509 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 10:29:27,510 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 10:29:27,510 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 10:29:27,510 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 10:29:27,510 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 10:29:27,511 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 10:29:27,511 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 10:29:27,511 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 10:29:27,511 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 10:29:27,511 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 10:29:27,512 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 10:29:27,512 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 10:29:27,512 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 10:29:27,512 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 10:29:27,513 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 10:29:27,513 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 10:29:27,513 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 10:29:27,513 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 10:29:27,513 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 10:29:27,514 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 10:29:27,514 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-21 10:29:27,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 10:29:28,011 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 10:29:28,018 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 10:29:28,020 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 10:29:28,020 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 10:29:28,023 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-09-21 10:29:28,103 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d2cca94/9eff1d1faf4a44ef91d8366c821fd870/FLAG2a5b2fd25 [2020-09-21 10:29:28,639 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 10:29:28,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invgen/apache-get-tag.i.v+nlh-reducer.c [2020-09-21 10:29:28,652 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d2cca94/9eff1d1faf4a44ef91d8366c821fd870/FLAG2a5b2fd25 [2020-09-21 10:29:28,941 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/23d2cca94/9eff1d1faf4a44ef91d8366c821fd870 [2020-09-21 10:29:28,954 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 10:29:28,960 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 10:29:28,961 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 10:29:28,962 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 10:29:28,966 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 10:29:28,967 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:29:28" (1/1) ... [2020-09-21 10:29:28,971 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:28, skipping insertion in model container [2020-09-21 10:29:28,972 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 10:29:28" (1/1) ... [2020-09-21 10:29:28,981 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 10:29:29,020 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 10:29:29,350 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:29:29,358 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 10:29:29,396 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 10:29:29,415 INFO L208 MainTranslator]: Completed translation [2020-09-21 10:29:29,415 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29 WrapperNode [2020-09-21 10:29:29,416 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 10:29:29,417 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 10:29:29,417 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 10:29:29,417 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 10:29:29,524 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... [2020-09-21 10:29:29,524 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... [2020-09-21 10:29:29,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... [2020-09-21 10:29:29,534 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... [2020-09-21 10:29:29,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... [2020-09-21 10:29:29,547 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... [2020-09-21 10:29:29,549 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... [2020-09-21 10:29:29,553 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 10:29:29,553 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 10:29:29,553 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 10:29:29,554 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 10:29:29,555 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-21 10:29:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 10:29:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 10:29:29,648 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-21 10:29:29,649 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 10:29:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 10:29:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-21 10:29:29,649 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-21 10:29:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-21 10:29:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 10:29:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 10:29:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 10:29:29,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 10:29:30,112 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 10:29:30,112 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 10:29:30,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:29:30 BoogieIcfgContainer [2020-09-21 10:29:30,119 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 10:29:30,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 10:29:30,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 10:29:30,124 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 10:29:30,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 10:29:28" (1/3) ... [2020-09-21 10:29:30,126 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5a7c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:29:30, skipping insertion in model container [2020-09-21 10:29:30,126 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 10:29:29" (2/3) ... [2020-09-21 10:29:30,127 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b5a7c37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 10:29:30, skipping insertion in model container [2020-09-21 10:29:30,127 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 10:29:30" (3/3) ... [2020-09-21 10:29:30,129 INFO L109 eAbstractionObserver]: Analyzing ICFG apache-get-tag.i.v+nlh-reducer.c [2020-09-21 10:29:30,141 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 10:29:30,151 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2020-09-21 10:29:30,174 INFO L251 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2020-09-21 10:29:30,205 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 10:29:30,205 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 10:29:30,205 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 10:29:30,206 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 10:29:30,206 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 10:29:30,206 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 10:29:30,206 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 10:29:30,206 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 10:29:30,232 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-21 10:29:30,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 10:29:30,238 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:30,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:30,240 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]=== [2020-09-21 10:29:30,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:30,247 INFO L82 PathProgramCache]: Analyzing trace with hash -1093455773, now seen corresponding path program 1 times [2020-09-21 10:29:30,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:30,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2135303099] [2020-09-21 10:29:30,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:30,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:30,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:30,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:30,585 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2135303099] [2020-09-21 10:29:30,588 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:30,589 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:30,590 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120621297] [2020-09-21 10:29:30,596 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:30,596 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:30,610 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:30,611 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:30,613 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 6 states. [2020-09-21 10:29:31,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:31,074 INFO L93 Difference]: Finished difference Result 137 states and 180 transitions. [2020-09-21 10:29:31,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:29:31,077 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2020-09-21 10:29:31,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:31,091 INFO L225 Difference]: With dead ends: 137 [2020-09-21 10:29:31,091 INFO L226 Difference]: Without dead ends: 113 [2020-09-21 10:29:31,096 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:29:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-21 10:29:31,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 69. [2020-09-21 10:29:31,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 10:29:31,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-09-21 10:29:31,153 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 12 [2020-09-21 10:29:31,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:31,154 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-09-21 10:29:31,154 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:31,154 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-09-21 10:29:31,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-09-21 10:29:31,155 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:31,155 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:31,155 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 10:29:31,156 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]=== [2020-09-21 10:29:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:31,156 INFO L82 PathProgramCache]: Analyzing trace with hash -1096690079, now seen corresponding path program 1 times [2020-09-21 10:29:31,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:31,157 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932337053] [2020-09-21 10:29:31,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:31,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:31,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:31,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:31,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:31,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932337053] [2020-09-21 10:29:31,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:31,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:29:31,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834024774] [2020-09-21 10:29:31,241 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:29:31,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:31,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:29:31,242 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:29:31,242 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 5 states. [2020-09-21 10:29:31,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:31,418 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-09-21 10:29:31,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:29:31,418 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-09-21 10:29:31,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:31,420 INFO L225 Difference]: With dead ends: 69 [2020-09-21 10:29:31,420 INFO L226 Difference]: Without dead ends: 67 [2020-09-21 10:29:31,421 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:31,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-21 10:29:31,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-09-21 10:29:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-21 10:29:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-09-21 10:29:31,432 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 12 [2020-09-21 10:29:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:31,432 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-09-21 10:29:31,432 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:29:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-09-21 10:29:31,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 10:29:31,433 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:31,433 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:31,434 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 10:29:31,434 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]=== [2020-09-21 10:29:31,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:31,434 INFO L82 PathProgramCache]: Analyzing trace with hash 362348992, now seen corresponding path program 1 times [2020-09-21 10:29:31,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:31,435 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1244578247] [2020-09-21 10:29:31,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:31,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:31,523 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:31,524 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1244578247] [2020-09-21 10:29:31,524 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:31,524 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:29:31,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [708895597] [2020-09-21 10:29:31,525 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:29:31,525 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:31,526 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:29:31,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:29:31,526 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 5 states. [2020-09-21 10:29:31,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:31,695 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2020-09-21 10:29:31,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:29:31,695 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 10:29:31,696 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:31,697 INFO L225 Difference]: With dead ends: 73 [2020-09-21 10:29:31,697 INFO L226 Difference]: Without dead ends: 71 [2020-09-21 10:29:31,697 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:31,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-21 10:29:31,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-21 10:29:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-21 10:29:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-21 10:29:31,707 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 13 [2020-09-21 10:29:31,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:31,707 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-21 10:29:31,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:29:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-21 10:29:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 10:29:31,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:31,709 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:31,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 10:29:31,709 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]=== [2020-09-21 10:29:31,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:31,710 INFO L82 PathProgramCache]: Analyzing trace with hash -2105928756, now seen corresponding path program 1 times [2020-09-21 10:29:31,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:31,711 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069140857] [2020-09-21 10:29:31,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:31,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:31,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:31,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:31,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069140857] [2020-09-21 10:29:31,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:31,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:31,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748056128] [2020-09-21 10:29:31,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:31,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:31,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:31,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:31,846 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 6 states. [2020-09-21 10:29:32,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:32,078 INFO L93 Difference]: Finished difference Result 71 states and 75 transitions. [2020-09-21 10:29:32,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:29:32,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-21 10:29:32,079 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:32,080 INFO L225 Difference]: With dead ends: 71 [2020-09-21 10:29:32,080 INFO L226 Difference]: Without dead ends: 69 [2020-09-21 10:29:32,081 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:29:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-09-21 10:29:32,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2020-09-21 10:29:32,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-21 10:29:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 72 transitions. [2020-09-21 10:29:32,089 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 72 transitions. Word has length 15 [2020-09-21 10:29:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:32,090 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 72 transitions. [2020-09-21 10:29:32,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 72 transitions. [2020-09-21 10:29:32,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-21 10:29:32,091 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:32,091 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:32,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 10:29:32,092 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]=== [2020-09-21 10:29:32,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:32,093 INFO L82 PathProgramCache]: Analyzing trace with hash 325126884, now seen corresponding path program 1 times [2020-09-21 10:29:32,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:32,093 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702624455] [2020-09-21 10:29:32,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:32,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:32,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:32,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702624455] [2020-09-21 10:29:32,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:32,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:32,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144308939] [2020-09-21 10:29:32,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:32,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:32,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:32,171 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:32,172 INFO L87 Difference]: Start difference. First operand 68 states and 72 transitions. Second operand 6 states. [2020-09-21 10:29:32,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:32,395 INFO L93 Difference]: Finished difference Result 69 states and 73 transitions. [2020-09-21 10:29:32,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:29:32,395 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-09-21 10:29:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:32,396 INFO L225 Difference]: With dead ends: 69 [2020-09-21 10:29:32,397 INFO L226 Difference]: Without dead ends: 67 [2020-09-21 10:29:32,397 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:29:32,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-21 10:29:32,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 66. [2020-09-21 10:29:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-21 10:29:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 70 transitions. [2020-09-21 10:29:32,404 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 70 transitions. Word has length 15 [2020-09-21 10:29:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:32,405 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 70 transitions. [2020-09-21 10:29:32,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:32,405 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 70 transitions. [2020-09-21 10:29:32,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 10:29:32,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:32,406 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:32,406 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 10:29:32,406 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]=== [2020-09-21 10:29:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:32,407 INFO L82 PathProgramCache]: Analyzing trace with hash -858848822, now seen corresponding path program 1 times [2020-09-21 10:29:32,407 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:32,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317947903] [2020-09-21 10:29:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:32,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:32,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:32,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:32,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:32,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317947903] [2020-09-21 10:29:32,522 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:32,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:32,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [418897382] [2020-09-21 10:29:32,523 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:32,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:32,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:32,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:32,525 INFO L87 Difference]: Start difference. First operand 66 states and 70 transitions. Second operand 6 states. [2020-09-21 10:29:32,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:32,829 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2020-09-21 10:29:32,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:29:32,830 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2020-09-21 10:29:32,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:32,831 INFO L225 Difference]: With dead ends: 112 [2020-09-21 10:29:32,831 INFO L226 Difference]: Without dead ends: 110 [2020-09-21 10:29:32,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:29:32,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-21 10:29:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 64. [2020-09-21 10:29:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-21 10:29:32,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2020-09-21 10:29:32,840 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 16 [2020-09-21 10:29:32,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:32,840 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2020-09-21 10:29:32,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:32,840 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2020-09-21 10:29:32,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 10:29:32,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:32,841 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:32,842 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 10:29:32,842 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]=== [2020-09-21 10:29:32,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:32,842 INFO L82 PathProgramCache]: Analyzing trace with hash -859278805, now seen corresponding path program 1 times [2020-09-21 10:29:32,843 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:32,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43968465] [2020-09-21 10:29:32,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:32,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:32,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:32,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:32,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:32,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43968465] [2020-09-21 10:29:32,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:32,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:29:32,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643822747] [2020-09-21 10:29:32,905 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:29:32,905 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:32,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:29:32,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:29:32,906 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 5 states. [2020-09-21 10:29:33,070 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:33,071 INFO L93 Difference]: Finished difference Result 65 states and 69 transitions. [2020-09-21 10:29:33,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:29:33,071 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-21 10:29:33,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:33,073 INFO L225 Difference]: With dead ends: 65 [2020-09-21 10:29:33,073 INFO L226 Difference]: Without dead ends: 61 [2020-09-21 10:29:33,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:33,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-21 10:29:33,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 60. [2020-09-21 10:29:33,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-21 10:29:33,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-09-21 10:29:33,080 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 16 [2020-09-21 10:29:33,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:33,081 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-09-21 10:29:33,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:29:33,081 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-09-21 10:29:33,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-21 10:29:33,082 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:33,082 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:33,082 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 10:29:33,082 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]=== [2020-09-21 10:29:33,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:33,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1489001901, now seen corresponding path program 1 times [2020-09-21 10:29:33,083 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:33,083 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764729007] [2020-09-21 10:29:33,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:33,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:33,133 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764729007] [2020-09-21 10:29:33,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:33,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:29:33,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787037481] [2020-09-21 10:29:33,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:29:33,134 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:33,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:29:33,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:29:33,135 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 5 states. [2020-09-21 10:29:33,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:33,277 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-09-21 10:29:33,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:29:33,278 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-21 10:29:33,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:33,279 INFO L225 Difference]: With dead ends: 61 [2020-09-21 10:29:33,279 INFO L226 Difference]: Without dead ends: 57 [2020-09-21 10:29:33,280 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:33,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-21 10:29:33,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 56. [2020-09-21 10:29:33,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-21 10:29:33,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-09-21 10:29:33,293 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 16 [2020-09-21 10:29:33,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:33,297 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-09-21 10:29:33,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:29:33,297 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-09-21 10:29:33,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 10:29:33,298 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:33,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:33,298 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 10:29:33,299 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]=== [2020-09-21 10:29:33,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:33,299 INFO L82 PathProgramCache]: Analyzing trace with hash -854506496, now seen corresponding path program 1 times [2020-09-21 10:29:33,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:33,301 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [313706423] [2020-09-21 10:29:33,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:33,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:33,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:33,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:33,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [313706423] [2020-09-21 10:29:33,431 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:33,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:29:33,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919866786] [2020-09-21 10:29:33,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:29:33,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:33,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:29:33,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:33,432 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 7 states. [2020-09-21 10:29:33,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:33,678 INFO L93 Difference]: Finished difference Result 95 states and 102 transitions. [2020-09-21 10:29:33,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:29:33,679 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-09-21 10:29:33,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:33,680 INFO L225 Difference]: With dead ends: 95 [2020-09-21 10:29:33,680 INFO L226 Difference]: Without dead ends: 93 [2020-09-21 10:29:33,681 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:29:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-21 10:29:33,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 54. [2020-09-21 10:29:33,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-21 10:29:33,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2020-09-21 10:29:33,687 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 17 [2020-09-21 10:29:33,687 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:33,687 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2020-09-21 10:29:33,687 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:29:33,688 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2020-09-21 10:29:33,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 10:29:33,688 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:33,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:33,689 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 10:29:33,689 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]=== [2020-09-21 10:29:33,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:33,690 INFO L82 PathProgramCache]: Analyzing trace with hash -1071358986, now seen corresponding path program 1 times [2020-09-21 10:29:33,690 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:33,690 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [758534481] [2020-09-21 10:29:33,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:33,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:33,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:33,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:33,750 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [758534481] [2020-09-21 10:29:33,751 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:33,751 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:33,751 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218976958] [2020-09-21 10:29:33,752 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:33,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:33,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:33,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:33,753 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand 6 states. [2020-09-21 10:29:33,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:33,957 INFO L93 Difference]: Finished difference Result 72 states and 78 transitions. [2020-09-21 10:29:33,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:29:33,957 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-21 10:29:33,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:33,958 INFO L225 Difference]: With dead ends: 72 [2020-09-21 10:29:33,958 INFO L226 Difference]: Without dead ends: 70 [2020-09-21 10:29:33,959 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:29:33,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-21 10:29:33,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2020-09-21 10:29:33,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-21 10:29:33,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-09-21 10:29:33,963 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 17 [2020-09-21 10:29:33,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:33,963 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-09-21 10:29:33,964 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:33,964 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-09-21 10:29:33,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-21 10:29:33,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:33,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:33,965 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 10:29:33,965 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]=== [2020-09-21 10:29:33,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:33,966 INFO L82 PathProgramCache]: Analyzing trace with hash -1069819786, now seen corresponding path program 1 times [2020-09-21 10:29:33,966 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:33,966 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856029840] [2020-09-21 10:29:33,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:33,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:34,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856029840] [2020-09-21 10:29:34,020 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:34,020 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:34,020 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692277650] [2020-09-21 10:29:34,021 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:34,021 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:34,021 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:34,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:34,022 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 6 states. [2020-09-21 10:29:34,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:34,167 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-09-21 10:29:34,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:29:34,168 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-09-21 10:29:34,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:34,169 INFO L225 Difference]: With dead ends: 53 [2020-09-21 10:29:34,169 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 10:29:34,169 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:29:34,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 10:29:34,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-09-21 10:29:34,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-21 10:29:34,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-09-21 10:29:34,174 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 17 [2020-09-21 10:29:34,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:34,174 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-09-21 10:29:34,174 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:34,174 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-09-21 10:29:34,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 10:29:34,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:34,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:34,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 10:29:34,176 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]=== [2020-09-21 10:29:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:34,176 INFO L82 PathProgramCache]: Analyzing trace with hash -726143538, now seen corresponding path program 1 times [2020-09-21 10:29:34,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:34,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160842050] [2020-09-21 10:29:34,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:34,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:34,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160842050] [2020-09-21 10:29:34,293 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:34,293 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-21 10:29:34,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324560981] [2020-09-21 10:29:34,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 10:29:34,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:34,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 10:29:34,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:34,294 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 7 states. [2020-09-21 10:29:34,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:34,483 INFO L93 Difference]: Finished difference Result 50 states and 54 transitions. [2020-09-21 10:29:34,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:29:34,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-21 10:29:34,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:34,484 INFO L225 Difference]: With dead ends: 50 [2020-09-21 10:29:34,485 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 10:29:34,485 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-09-21 10:29:34,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 10:29:34,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-09-21 10:29:34,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-21 10:29:34,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-09-21 10:29:34,490 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 18 [2020-09-21 10:29:34,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:34,491 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-09-21 10:29:34,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 10:29:34,491 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-09-21 10:29:34,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 10:29:34,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:34,492 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:34,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 10:29:34,493 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]=== [2020-09-21 10:29:34,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:34,493 INFO L82 PathProgramCache]: Analyzing trace with hash 1148978332, now seen corresponding path program 1 times [2020-09-21 10:29:34,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:34,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1980047653] [2020-09-21 10:29:34,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:34,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:34,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1980047653] [2020-09-21 10:29:34,573 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:34,573 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:34,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [471031760] [2020-09-21 10:29:34,574 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:34,574 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:34,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:34,575 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:34,575 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 6 states. [2020-09-21 10:29:34,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:34,780 INFO L93 Difference]: Finished difference Result 69 states and 75 transitions. [2020-09-21 10:29:34,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 10:29:34,780 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-21 10:29:34,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:34,781 INFO L225 Difference]: With dead ends: 69 [2020-09-21 10:29:34,782 INFO L226 Difference]: Without dead ends: 67 [2020-09-21 10:29:34,782 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-21 10:29:34,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-21 10:29:34,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 43. [2020-09-21 10:29:34,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-21 10:29:34,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-09-21 10:29:34,787 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 18 [2020-09-21 10:29:34,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:34,789 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-09-21 10:29:34,789 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:34,789 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-09-21 10:29:34,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 10:29:34,790 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:34,790 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:34,790 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 10:29:34,790 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]=== [2020-09-21 10:29:34,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:34,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1147612912, now seen corresponding path program 1 times [2020-09-21 10:29:34,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:34,797 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [364974255] [2020-09-21 10:29:34,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:34,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:34,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:34,920 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [364974255] [2020-09-21 10:29:34,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:34,921 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:34,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [397451232] [2020-09-21 10:29:34,921 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:34,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:34,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:34,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:34,922 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 6 states. [2020-09-21 10:29:35,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:35,115 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-09-21 10:29:35,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:29:35,116 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-21 10:29:35,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:35,117 INFO L225 Difference]: With dead ends: 57 [2020-09-21 10:29:35,117 INFO L226 Difference]: Without dead ends: 55 [2020-09-21 10:29:35,118 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:29:35,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-21 10:29:35,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 41. [2020-09-21 10:29:35,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-21 10:29:35,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-09-21 10:29:35,122 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 18 [2020-09-21 10:29:35,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:35,122 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-09-21 10:29:35,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:35,122 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-09-21 10:29:35,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-21 10:29:35,123 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:35,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:35,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-21 10:29:35,124 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]=== [2020-09-21 10:29:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:35,124 INFO L82 PathProgramCache]: Analyzing trace with hash 1195328162, now seen corresponding path program 1 times [2020-09-21 10:29:35,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:35,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2060370854] [2020-09-21 10:29:35,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:35,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:35,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2060370854] [2020-09-21 10:29:35,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:35,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:35,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253812767] [2020-09-21 10:29:35,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:35,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:35,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:35,206 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:35,207 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 6 states. [2020-09-21 10:29:35,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:35,367 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-09-21 10:29:35,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 10:29:35,367 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-09-21 10:29:35,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:35,368 INFO L225 Difference]: With dead ends: 41 [2020-09-21 10:29:35,368 INFO L226 Difference]: Without dead ends: 37 [2020-09-21 10:29:35,371 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-21 10:29:35,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-21 10:29:35,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-21 10:29:35,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 10:29:35,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-21 10:29:35,377 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 18 [2020-09-21 10:29:35,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:35,377 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-21 10:29:35,377 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:35,377 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-21 10:29:35,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-21 10:29:35,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:35,379 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:35,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-09-21 10:29:35,379 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]=== [2020-09-21 10:29:35,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:35,379 INFO L82 PathProgramCache]: Analyzing trace with hash 1258593065, now seen corresponding path program 1 times [2020-09-21 10:29:35,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:35,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054282681] [2020-09-21 10:29:35,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:35,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:35,481 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2054282681] [2020-09-21 10:29:35,482 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:35,482 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-21 10:29:35,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237816316] [2020-09-21 10:29:35,482 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 10:29:35,483 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:35,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 10:29:35,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 10:29:35,483 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 6 states. [2020-09-21 10:29:35,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:35,699 INFO L93 Difference]: Finished difference Result 52 states and 58 transitions. [2020-09-21 10:29:35,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 10:29:35,699 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-09-21 10:29:35,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:35,700 INFO L225 Difference]: With dead ends: 52 [2020-09-21 10:29:35,701 INFO L226 Difference]: Without dead ends: 50 [2020-09-21 10:29:35,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-21 10:29:35,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-21 10:29:35,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 35. [2020-09-21 10:29:35,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-09-21 10:29:35,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-09-21 10:29:35,708 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 19 [2020-09-21 10:29:35,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:35,708 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-09-21 10:29:35,708 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 10:29:35,708 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-09-21 10:29:35,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-21 10:29:35,711 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:35,711 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] [2020-09-21 10:29:35,712 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-09-21 10:29:35,712 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]=== [2020-09-21 10:29:35,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:35,712 INFO L82 PathProgramCache]: Analyzing trace with hash -950489901, now seen corresponding path program 1 times [2020-09-21 10:29:35,713 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:35,713 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079474063] [2020-09-21 10:29:35,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:35,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:35,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:35,772 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079474063] [2020-09-21 10:29:35,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:35,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:29:35,773 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281297623] [2020-09-21 10:29:35,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:29:35,774 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:35,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:29:35,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:29:35,776 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-09-21 10:29:35,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:35,863 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-09-21 10:29:35,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:29:35,864 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-09-21 10:29:35,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:35,864 INFO L225 Difference]: With dead ends: 35 [2020-09-21 10:29:35,865 INFO L226 Difference]: Without dead ends: 33 [2020-09-21 10:29:35,865 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:35,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-21 10:29:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-21 10:29:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-21 10:29:35,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-09-21 10:29:35,869 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 20 [2020-09-21 10:29:35,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:35,870 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-09-21 10:29:35,870 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:29:35,870 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-09-21 10:29:35,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-21 10:29:35,870 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 10:29:35,870 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 10:29:35,871 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-09-21 10:29:35,871 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]=== [2020-09-21 10:29:35,871 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 10:29:35,871 INFO L82 PathProgramCache]: Analyzing trace with hash 599587266, now seen corresponding path program 1 times [2020-09-21 10:29:35,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 10:29:35,872 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743885109] [2020-09-21 10:29:35,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 10:29:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 10:29:35,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 10:29:35,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 10:29:35,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743885109] [2020-09-21 10:29:35,927 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 10:29:35,927 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 10:29:35,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791993344] [2020-09-21 10:29:35,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 10:29:35,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 10:29:35,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 10:29:35,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 10:29:35,930 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 5 states. [2020-09-21 10:29:36,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 10:29:36,020 INFO L93 Difference]: Finished difference Result 37 states and 41 transitions. [2020-09-21 10:29:36,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 10:29:36,020 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-09-21 10:29:36,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 10:29:36,020 INFO L225 Difference]: With dead ends: 37 [2020-09-21 10:29:36,021 INFO L226 Difference]: Without dead ends: 0 [2020-09-21 10:29:36,022 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-21 10:29:36,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-21 10:29:36,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-21 10:29:36,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-21 10:29:36,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-21 10:29:36,023 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-21 10:29:36,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 10:29:36,023 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-21 10:29:36,024 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 10:29:36,024 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-21 10:29:36,024 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-21 10:29:36,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-09-21 10:29:36,027 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-21 10:29:36,452 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:29:36,453 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__tmp_383_0~0 |old(~__tmp_383_0~0)|) (= ~__tmp_247_0~0 |old(~__tmp_247_0~0)|) (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_305~0 |old(~__return_305~0)|)) [2020-09-21 10:29:36,453 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:29:36,453 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-21 10:29:36,453 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-21 10:29:36,453 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-21 10:29:36,453 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-21 10:29:36,454 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-09-21 10:29:36,454 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-21 10:29:36,454 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-09-21 10:29:36,454 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-09-21 10:29:36,454 INFO L268 CegarLoopResult]: For program point mainErr3ASSERT_VIOLATIONERROR_FUNCTION(line 83) no Hoare annotation was computed. [2020-09-21 10:29:36,454 INFO L268 CegarLoopResult]: For program point L349(line 349) no Hoare annotation was computed. [2020-09-21 10:29:36,454 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 373) no Hoare annotation was computed. [2020-09-21 10:29:36,455 INFO L268 CegarLoopResult]: For program point L151(lines 151 159) no Hoare annotation was computed. [2020-09-21 10:29:36,455 INFO L268 CegarLoopResult]: For program point L52(lines 52 252) no Hoare annotation was computed. [2020-09-21 10:29:36,455 INFO L268 CegarLoopResult]: For program point L308(line 308) no Hoare annotation was computed. [2020-09-21 10:29:36,455 INFO L268 CegarLoopResult]: For program point L275(lines 275 362) no Hoare annotation was computed. [2020-09-21 10:29:36,455 INFO L268 CegarLoopResult]: For program point mainErr11ASSERT_VIOLATIONERROR_FUNCTION(line 235) no Hoare annotation was computed. [2020-09-21 10:29:36,455 INFO L268 CegarLoopResult]: For program point L69(lines 69 93) no Hoare annotation was computed. [2020-09-21 10:29:36,455 INFO L268 CegarLoopResult]: For program point L185(lines 185 195) no Hoare annotation was computed. [2020-09-21 10:29:36,456 INFO L268 CegarLoopResult]: For program point mainErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2020-09-21 10:29:36,456 INFO L268 CegarLoopResult]: For program point L111(lines 111 202) no Hoare annotation was computed. [2020-09-21 10:29:36,456 INFO L268 CegarLoopResult]: For program point mainErr14ASSERT_VIOLATIONERROR_FUNCTION(line 308) no Hoare annotation was computed. [2020-09-21 10:29:36,456 INFO L268 CegarLoopResult]: For program point L235(line 235) no Hoare annotation was computed. [2020-09-21 10:29:36,456 INFO L264 CegarLoopResult]: At program point L326(lines 30 366) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (<= 0 main_~main__t~0)) [2020-09-21 10:29:36,457 INFO L264 CegarLoopResult]: At program point L194(lines 58 252) the Hoare annotation is: (and (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (< main_~main__t~0 (+ main_~main__tagbuf_len~0 1)) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-21 10:29:36,457 INFO L268 CegarLoopResult]: For program point L153(line 153) no Hoare annotation was computed. [2020-09-21 10:29:36,457 INFO L268 CegarLoopResult]: For program point mainErr5ASSERT_VIOLATIONERROR_FUNCTION(line 125) no Hoare annotation was computed. [2020-09-21 10:29:36,457 INFO L268 CegarLoopResult]: For program point L54(line 54) no Hoare annotation was computed. [2020-09-21 10:29:36,457 INFO L268 CegarLoopResult]: For program point L277(line 277) no Hoare annotation was computed. [2020-09-21 10:29:36,457 INFO L268 CegarLoopResult]: For program point L335(lines 335 358) no Hoare annotation was computed. [2020-09-21 10:29:36,457 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 373) no Hoare annotation was computed. [2020-09-21 10:29:36,458 INFO L268 CegarLoopResult]: For program point mainErr13ASSERT_VIOLATIONERROR_FUNCTION(line 296) no Hoare annotation was computed. [2020-09-21 10:29:36,458 INFO L268 CegarLoopResult]: For program point L104(lines 104 208) no Hoare annotation was computed. [2020-09-21 10:29:36,458 INFO L268 CegarLoopResult]: For program point L71(line 71) no Hoare annotation was computed. [2020-09-21 10:29:36,458 INFO L268 CegarLoopResult]: For program point L294(lines 294 316) no Hoare annotation was computed. [2020-09-21 10:29:36,458 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 42) no Hoare annotation was computed. [2020-09-21 10:29:36,458 INFO L268 CegarLoopResult]: For program point L30(lines 30 366) no Hoare annotation was computed. [2020-09-21 10:29:36,458 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 13 373) the Hoare annotation is: (and (= |old(~__tmp_247_0~0)| ~__tmp_247_0~0) (= |old(~__return_305~0)| ~__return_305~0) (= |old(~__tmp_383_0~0)| ~__tmp_383_0~0)) [2020-09-21 10:29:36,459 INFO L268 CegarLoopResult]: For program point L187(line 187) no Hoare annotation was computed. [2020-09-21 10:29:36,459 INFO L268 CegarLoopResult]: For program point L22(lines 22 367) no Hoare annotation was computed. [2020-09-21 10:29:36,459 INFO L268 CegarLoopResult]: For program point L113(line 113) no Hoare annotation was computed. [2020-09-21 10:29:36,459 INFO L268 CegarLoopResult]: For program point mainErr8ASSERT_VIOLATIONERROR_FUNCTION(line 175) no Hoare annotation was computed. [2020-09-21 10:29:36,459 INFO L268 CegarLoopResult]: For program point mainErr16ASSERT_VIOLATIONERROR_FUNCTION(line 349) no Hoare annotation was computed. [2020-09-21 10:29:36,459 INFO L268 CegarLoopResult]: For program point L287(lines 287 361) no Hoare annotation was computed. [2020-09-21 10:29:36,459 INFO L268 CegarLoopResult]: For program point L221(lines 221 243) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point mainErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point L81(lines 81 91) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point L337(line 337) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point mainErr15ASSERT_VIOLATIONERROR_FUNCTION(line 337) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point L139(lines 139 161) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point L40(lines 40 254) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point L296(line 296) no Hoare annotation was computed. [2020-09-21 10:29:36,460 INFO L268 CegarLoopResult]: For program point mainErr2ASSERT_VIOLATIONERROR_FUNCTION(line 71) no Hoare annotation was computed. [2020-09-21 10:29:36,461 INFO L268 CegarLoopResult]: For program point L123(lines 123 200) no Hoare annotation was computed. [2020-09-21 10:29:36,461 INFO L271 CegarLoopResult]: At program point L313(lines 30 366) the Hoare annotation is: true [2020-09-21 10:29:36,461 INFO L268 CegarLoopResult]: For program point L214(lines 214 249) no Hoare annotation was computed. [2020-09-21 10:29:36,461 INFO L268 CegarLoopResult]: For program point L173(lines 173 197) no Hoare annotation was computed. [2020-09-21 10:29:36,461 INFO L268 CegarLoopResult]: For program point mainErr10ASSERT_VIOLATIONERROR_FUNCTION(line 223) no Hoare annotation was computed. [2020-09-21 10:29:36,461 INFO L268 CegarLoopResult]: For program point L264(lines 264 364) no Hoare annotation was computed. [2020-09-21 10:29:36,461 INFO L268 CegarLoopResult]: For program point L132(lines 132 199) no Hoare annotation was computed. [2020-09-21 10:29:36,462 INFO L264 CegarLoopResult]: At program point L355(lines 281 362) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~13 0)) (<= 0 main_~main__t~0)) [2020-09-21 10:29:36,462 INFO L268 CegarLoopResult]: For program point mainErr1ASSERT_VIOLATIONERROR_FUNCTION(line 54) no Hoare annotation was computed. [2020-09-21 10:29:36,462 INFO L268 CegarLoopResult]: For program point L223(line 223) no Hoare annotation was computed. [2020-09-21 10:29:36,462 INFO L268 CegarLoopResult]: For program point L347(lines 347 356) no Hoare annotation was computed. [2020-09-21 10:29:36,462 INFO L264 CegarLoopResult]: At program point L248(lines 100 250) the Hoare annotation is: (and (< main_~main__t~0 main_~main__tagbuf_len~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (<= 1 main_~main__t~0) (not (= main_~__VERIFIER_assert__cond~1 0))) [2020-09-21 10:29:36,462 INFO L268 CegarLoopResult]: For program point L83(line 83) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point L306(lines 306 314) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point L141(line 141) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point mainErr9ASSERT_VIOLATIONERROR_FUNCTION(line 187) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point L42(line 42) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point L100(lines 100 250) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point L323(lines 323 360) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point mainErr4ASSERT_VIOLATIONERROR_FUNCTION(line 113) no Hoare annotation was computed. [2020-09-21 10:29:36,463 INFO L268 CegarLoopResult]: For program point L125(line 125) no Hoare annotation was computed. [2020-09-21 10:29:36,464 INFO L268 CegarLoopResult]: For program point L18(lines 18 372) no Hoare annotation was computed. [2020-09-21 10:29:36,464 INFO L268 CegarLoopResult]: For program point mainErr12ASSERT_VIOLATIONERROR_FUNCTION(line 277) no Hoare annotation was computed. [2020-09-21 10:29:36,464 INFO L268 CegarLoopResult]: For program point L175(line 175) no Hoare annotation was computed. [2020-09-21 10:29:36,464 INFO L268 CegarLoopResult]: For program point L233(lines 233 241) no Hoare annotation was computed. [2020-09-21 10:29:36,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 10:29:36 BoogieIcfgContainer [2020-09-21 10:29:36,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 10:29:36,493 INFO L168 Benchmark]: Toolchain (without parser) took 7536.14 ms. Allocated memory was 148.4 MB in the beginning and 273.7 MB in the end (delta: 125.3 MB). Free memory was 104.4 MB in the beginning and 146.4 MB in the end (delta: -41.9 MB). Peak memory consumption was 83.4 MB. Max. memory is 7.1 GB. [2020-09-21 10:29:36,494 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 10:29:36,495 INFO L168 Benchmark]: CACSL2BoogieTranslator took 455.01 ms. Allocated memory is still 148.4 MB. Free memory was 103.8 MB in the beginning and 91.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-21 10:29:36,496 INFO L168 Benchmark]: Boogie Preprocessor took 136.20 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 91.2 MB in the beginning and 181.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-21 10:29:36,496 INFO L168 Benchmark]: RCFGBuilder took 565.74 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 156.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-09-21 10:29:36,497 INFO L168 Benchmark]: TraceAbstraction took 6369.69 ms. Allocated memory was 203.9 MB in the beginning and 273.7 MB in the end (delta: 69.7 MB). Free memory was 155.7 MB in the beginning and 146.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 79.0 MB. Max. memory is 7.1 GB. [2020-09-21 10:29:36,500 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 455.01 ms. Allocated memory is still 148.4 MB. Free memory was 103.8 MB in the beginning and 91.2 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 136.20 ms. Allocated memory was 148.4 MB in the beginning and 203.9 MB in the end (delta: 55.6 MB). Free memory was 91.2 MB in the beginning and 181.2 MB in the end (delta: -90.1 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 565.74 ms. Allocated memory is still 203.9 MB. Free memory was 181.2 MB in the beginning and 156.3 MB in the end (delta: 24.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6369.69 ms. Allocated memory was 203.9 MB in the beginning and 273.7 MB in the end (delta: 69.7 MB). Free memory was 155.7 MB in the beginning and 146.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 79.0 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: main__t < main__tagbuf_len && 0 <= main__t - InvariantResult [Line: 58]: Loop Invariant Derived loop invariant: ((!(__VERIFIER_assert__cond == 0) && 1 <= main__t) && main__t < main__tagbuf_len + 1) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 100]: Loop Invariant Derived loop invariant: ((main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 1 <= main__t) && !(__VERIFIER_assert__cond == 0) - InvariantResult [Line: 281]: Loop Invariant Derived loop invariant: (main__t < main__tagbuf_len && !(__VERIFIER_assert__cond == 0)) && 0 <= main__t - 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: 5.8s, OverallIterations: 18, TraceHistogramMax: 1, AutomataDifference: 3.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 802 SDtfs, 1459 SDslu, 821 SDs, 0 SdLazy, 2124 SolverSat, 146 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 182 GetRequests, 60 SyntacticMatches, 8 SemanticMatches, 114 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=76occurred in iteration=0, 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, 18 MinimizatonAttempts, 209 StatesRemovedByMinimization, 14 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 14 NumberOfFragments, 76 HoareAnnotationTreeSize, 9 FomulaSimplifications, 50568 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1351 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 298 NumberOfCodeBlocks, 298 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 280 ConstructedInterpolants, 0 QuantifiedInterpolants, 13380 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 18 InterpolantComputations, 18 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...