/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 true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test24-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:35:43,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:35:43,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:35:43,277 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:35:43,277 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:35:43,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:35:43,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:35:43,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:35:43,283 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:35:43,284 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:35:43,285 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:35:43,286 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:35:43,286 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:35:43,287 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:35:43,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:35:43,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:35:43,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:35:43,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:35:43,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:35:43,295 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:35:43,300 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:35:43,301 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:35:43,302 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:35:43,307 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:35:43,312 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:35:43,313 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:35:43,313 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:35:43,314 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:35:43,314 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:35:43,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:35:43,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:35:43,318 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:35:43,321 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:35:43,322 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:35:43,323 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:35:43,323 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:35:43,324 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:35:43,324 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:35:43,324 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:35:43,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:35:43,328 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:35:43,329 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 [2020-08-19 03:35:43,353 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:35:43,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:35:43,354 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:35:43,355 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:35:43,355 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:35:43,355 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:35:43,355 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:35:43,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:35:43,356 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:35:43,356 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:35:43,356 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:35:43,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:35:43,356 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:35:43,357 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:35:43,357 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:35:43,357 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:35:43,357 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:35:43,357 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:35:43,358 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:35:43,358 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:35:43,358 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:35:43,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:35:43,358 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:35:43,359 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:35:43,359 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:35:43,359 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:35:43,359 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:35:43,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:35:43,360 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:35:43,360 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 -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1; [2020-08-19 03:35:43,690 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:35:43,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:35:43,719 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:35:43,721 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:35:43,722 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:35:43,723 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-19 03:35:43,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25478bdc/573aa1a3763444e4baeb0eca35ada7bf/FLAGe86012c6a [2020-08-19 03:35:44,153 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:35:44,154 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test24-1.c [2020-08-19 03:35:44,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25478bdc/573aa1a3763444e4baeb0eca35ada7bf/FLAGe86012c6a [2020-08-19 03:35:44,555 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25478bdc/573aa1a3763444e4baeb0eca35ada7bf [2020-08-19 03:35:44,568 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:35:44,570 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:35:44,574 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:35:44,574 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:35:44,579 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:35:44,580 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,584 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@493f7546 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44, skipping insertion in model container [2020-08-19 03:35:44,584 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,593 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:35:44,613 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:35:44,791 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:35:44,800 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:35:44,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:35:44,833 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:35:44,833 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44 WrapperNode [2020-08-19 03:35:44,833 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:35:44,834 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:35:44,834 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:35:44,834 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:35:44,923 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,931 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,937 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,942 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,943 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (1/1) ... [2020-08-19 03:35:44,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:35:44,946 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:35:44,946 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:35:44,946 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:35:44,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (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 [2020-08-19 03:35:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:35:45,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:35:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-19 03:35:45,008 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:35:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:35:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:35:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-19 03:35:45,008 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-19 03:35:45,009 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:35:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-19 03:35:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-19 03:35:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-19 03:35:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:35:45,010 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:35:45,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:35:45,386 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 03:35:45,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:35:45 BoogieIcfgContainer [2020-08-19 03:35:45,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:35:45,393 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:35:45,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:35:45,397 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:35:45,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:35:44" (1/3) ... [2020-08-19 03:35:45,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb05fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:35:45, skipping insertion in model container [2020-08-19 03:35:45,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:35:44" (2/3) ... [2020-08-19 03:35:45,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@eb05fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:35:45, skipping insertion in model container [2020-08-19 03:35:45,400 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:35:45" (3/3) ... [2020-08-19 03:35:45,401 INFO L109 eAbstractionObserver]: Analyzing ICFG test24-1.c [2020-08-19 03:35:45,414 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:35:45,424 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:35:45,441 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:35:45,474 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:35:45,474 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:35:45,475 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:35:45,475 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:35:45,475 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:35:45,475 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:35:45,475 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:35:45,475 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:35:45,501 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-08-19 03:35:45,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 03:35:45,508 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:45,509 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:45,510 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:45,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:45,517 INFO L82 PathProgramCache]: Analyzing trace with hash 149844724, now seen corresponding path program 1 times [2020-08-19 03:35:45,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:45,528 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1681324038] [2020-08-19 03:35:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:45,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:45,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:45,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:45,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-08-19 03:35:45,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:45,727 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1681324038] [2020-08-19 03:35:45,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:45,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:35:45,730 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592639409] [2020-08-19 03:35:45,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:35:45,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:45,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:35:45,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:45,752 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-08-19 03:35:45,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:45,839 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2020-08-19 03:35:45,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:35:45,841 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-08-19 03:35:45,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:45,852 INFO L225 Difference]: With dead ends: 35 [2020-08-19 03:35:45,853 INFO L226 Difference]: Without dead ends: 17 [2020-08-19 03:35:45,857 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:35:45,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-19 03:35:45,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-19 03:35:45,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-19 03:35:45,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2020-08-19 03:35:45,899 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 15 [2020-08-19 03:35:45,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:45,899 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2020-08-19 03:35:45,900 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:35:45,900 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2020-08-19 03:35:45,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 03:35:45,901 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:45,901 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:45,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:35:45,902 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:45,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:45,902 INFO L82 PathProgramCache]: Analyzing trace with hash -1249419983, now seen corresponding path program 1 times [2020-08-19 03:35:45,903 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:45,903 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1317451737] [2020-08-19 03:35:45,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:45,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-19 03:35:46,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:46,093 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1317451737] [2020-08-19 03:35:46,093 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:35:46,093 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 03:35:46,094 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030227540] [2020-08-19 03:35:46,095 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:35:46,096 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:46,096 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:35:46,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:35:46,097 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 5 states. [2020-08-19 03:35:46,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:46,245 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2020-08-19 03:35:46,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:35:46,246 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-08-19 03:35:46,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:46,247 INFO L225 Difference]: With dead ends: 27 [2020-08-19 03:35:46,247 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 03:35:46,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:35:46,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 03:35:46,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2020-08-19 03:35:46,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 03:35:46,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-08-19 03:35:46,256 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 16 [2020-08-19 03:35:46,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:46,257 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-08-19 03:35:46,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:35:46,257 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-08-19 03:35:46,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 03:35:46,258 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:46,259 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:46,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:35:46,259 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:46,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:46,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1840889772, now seen corresponding path program 1 times [2020-08-19 03:35:46,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:46,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [472393433] [2020-08-19 03:35:46,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:46,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-19 03:35:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:46,430 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [472393433] [2020-08-19 03:35:46,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:46,431 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 03:35:46,431 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11238377] [2020-08-19 03:35:46,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:35:46,432 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:46,432 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:35:46,432 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 03:35:46,432 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 6 states. [2020-08-19 03:35:46,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:46,514 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-08-19 03:35:46,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:35:46,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-08-19 03:35:46,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:46,515 INFO L225 Difference]: With dead ends: 29 [2020-08-19 03:35:46,516 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 03:35:46,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:35:46,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 03:35:46,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-08-19 03:35:46,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 03:35:46,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-08-19 03:35:46,523 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 18 [2020-08-19 03:35:46,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:46,523 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-08-19 03:35:46,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:35:46,524 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-08-19 03:35:46,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 03:35:46,525 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:46,525 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:46,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:35:46,526 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:46,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:46,526 INFO L82 PathProgramCache]: Analyzing trace with hash -488804505, now seen corresponding path program 2 times [2020-08-19 03:35:46,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:46,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [8814515] [2020-08-19 03:35:46,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-19 03:35:46,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,695 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:46,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [8814515] [2020-08-19 03:35:46,696 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:46,696 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 03:35:46,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857364028] [2020-08-19 03:35:46,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:35:46,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:46,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:35:46,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:35:46,698 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 7 states. [2020-08-19 03:35:46,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:46,817 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-08-19 03:35:46,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 03:35:46,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-08-19 03:35:46,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:46,819 INFO L225 Difference]: With dead ends: 31 [2020-08-19 03:35:46,819 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 03:35:46,820 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:35:46,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 03:35:46,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-08-19 03:35:46,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-19 03:35:46,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2020-08-19 03:35:46,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 20 [2020-08-19 03:35:46,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:46,827 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2020-08-19 03:35:46,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:35:46,827 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2020-08-19 03:35:46,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 03:35:46,828 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:46,828 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:46,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:35:46,829 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:46,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:46,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1647043486, now seen corresponding path program 3 times [2020-08-19 03:35:46,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:46,830 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [282522455] [2020-08-19 03:35:46,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-08-19 03:35:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:46,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [282522455] [2020-08-19 03:35:46,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:46,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 03:35:46,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643580664] [2020-08-19 03:35:46,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:35:46,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:46,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:35:46,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:35:46,964 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand 9 states. [2020-08-19 03:35:47,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:47,104 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2020-08-19 03:35:47,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:35:47,106 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 22 [2020-08-19 03:35:47,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:47,107 INFO L225 Difference]: With dead ends: 33 [2020-08-19 03:35:47,107 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 03:35:47,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:35:47,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 03:35:47,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-19 03:35:47,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 03:35:47,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-08-19 03:35:47,117 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 22 [2020-08-19 03:35:47,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:47,117 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-08-19 03:35:47,117 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:35:47,117 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-08-19 03:35:47,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 03:35:47,118 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:47,118 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:47,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:35:47,119 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:47,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:47,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1976792733, now seen corresponding path program 4 times [2020-08-19 03:35:47,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:47,121 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358442286] [2020-08-19 03:35:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:47,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:47,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2020-08-19 03:35:47,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,279 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:47,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358442286] [2020-08-19 03:35:47,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:47,280 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 03:35:47,280 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305320540] [2020-08-19 03:35:47,280 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 03:35:47,280 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:47,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 03:35:47,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-08-19 03:35:47,281 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 9 states. [2020-08-19 03:35:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:47,410 INFO L93 Difference]: Finished difference Result 35 states and 35 transitions. [2020-08-19 03:35:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-08-19 03:35:47,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-08-19 03:35:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:47,412 INFO L225 Difference]: With dead ends: 35 [2020-08-19 03:35:47,412 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 03:35:47,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=117, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:35:47,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 03:35:47,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-08-19 03:35:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 03:35:47,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-08-19 03:35:47,418 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 24 [2020-08-19 03:35:47,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:47,418 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-08-19 03:35:47,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 03:35:47,419 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-08-19 03:35:47,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 03:35:47,420 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:47,420 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:47,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:35:47,420 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:47,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:47,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1264922136, now seen corresponding path program 5 times [2020-08-19 03:35:47,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:47,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1104576604] [2020-08-19 03:35:47,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:47,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:47,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-08-19 03:35:47,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,548 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:47,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1104576604] [2020-08-19 03:35:47,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:47,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 03:35:47,549 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887204493] [2020-08-19 03:35:47,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 03:35:47,550 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:47,550 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 03:35:47,550 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:35:47,550 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-08-19 03:35:47,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:47,713 INFO L93 Difference]: Finished difference Result 37 states and 37 transitions. [2020-08-19 03:35:47,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:35:47,714 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-08-19 03:35:47,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:47,715 INFO L225 Difference]: With dead ends: 37 [2020-08-19 03:35:47,715 INFO L226 Difference]: Without dead ends: 29 [2020-08-19 03:35:47,716 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=154, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:35:47,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-19 03:35:47,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-19 03:35:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-19 03:35:47,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2020-08-19 03:35:47,722 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 26 [2020-08-19 03:35:47,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:47,722 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2020-08-19 03:35:47,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 03:35:47,723 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2020-08-19 03:35:47,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 03:35:47,724 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:47,724 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:47,724 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:35:47,724 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:47,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:47,725 INFO L82 PathProgramCache]: Analyzing trace with hash 57078483, now seen corresponding path program 6 times [2020-08-19 03:35:47,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:47,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039131137] [2020-08-19 03:35:47,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:47,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-08-19 03:35:47,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:47,908 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:47,909 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039131137] [2020-08-19 03:35:47,909 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:47,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:35:47,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657669458] [2020-08-19 03:35:47,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 03:35:47,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:47,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 03:35:47,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:35:47,912 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 11 states. [2020-08-19 03:35:48,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:48,086 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-19 03:35:48,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-19 03:35:48,087 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2020-08-19 03:35:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:48,087 INFO L225 Difference]: With dead ends: 39 [2020-08-19 03:35:48,088 INFO L226 Difference]: Without dead ends: 31 [2020-08-19 03:35:48,088 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=110, Invalid=196, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:35:48,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-19 03:35:48,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-19 03:35:48,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-19 03:35:48,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-08-19 03:35:48,094 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 28 [2020-08-19 03:35:48,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:48,095 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-08-19 03:35:48,095 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 03:35:48,095 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-08-19 03:35:48,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-19 03:35:48,096 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:48,096 INFO L422 BasicCegarLoop]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:48,096 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:35:48,096 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:48,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:48,097 INFO L82 PathProgramCache]: Analyzing trace with hash -1039502130, now seen corresponding path program 7 times [2020-08-19 03:35:48,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:48,097 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [744764155] [2020-08-19 03:35:48,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-19 03:35:48,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,239 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:48,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [744764155] [2020-08-19 03:35:48,240 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:48,240 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 03:35:48,240 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1220809103] [2020-08-19 03:35:48,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:35:48,241 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:48,241 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:35:48,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:35:48,241 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 12 states. [2020-08-19 03:35:48,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:48,408 INFO L93 Difference]: Finished difference Result 41 states and 41 transitions. [2020-08-19 03:35:48,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-08-19 03:35:48,409 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-08-19 03:35:48,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:48,410 INFO L225 Difference]: With dead ends: 41 [2020-08-19 03:35:48,410 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 03:35:48,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=137, Invalid=243, Unknown=0, NotChecked=0, Total=380 [2020-08-19 03:35:48,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 03:35:48,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-08-19 03:35:48,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 03:35:48,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 33 transitions. [2020-08-19 03:35:48,416 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 33 transitions. Word has length 30 [2020-08-19 03:35:48,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:48,416 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 33 transitions. [2020-08-19 03:35:48,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:35:48,417 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 33 transitions. [2020-08-19 03:35:48,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-08-19 03:35:48,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:48,418 INFO L422 BasicCegarLoop]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:48,418 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 03:35:48,418 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:48,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:48,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1708483593, now seen corresponding path program 8 times [2020-08-19 03:35:48,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:48,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1839830267] [2020-08-19 03:35:48,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:48,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-19 03:35:48,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,566 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:48,566 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1839830267] [2020-08-19 03:35:48,567 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:48,567 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:35:48,567 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308514259] [2020-08-19 03:35:48,568 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 03:35:48,568 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:48,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 03:35:48,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-08-19 03:35:48,569 INFO L87 Difference]: Start difference. First operand 33 states and 33 transitions. Second operand 13 states. [2020-08-19 03:35:48,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:48,761 INFO L93 Difference]: Finished difference Result 43 states and 43 transitions. [2020-08-19 03:35:48,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-08-19 03:35:48,762 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-08-19 03:35:48,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:48,763 INFO L225 Difference]: With dead ends: 43 [2020-08-19 03:35:48,763 INFO L226 Difference]: Without dead ends: 35 [2020-08-19 03:35:48,764 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=167, Invalid=295, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:35:48,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-19 03:35:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-19 03:35:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-19 03:35:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 35 transitions. [2020-08-19 03:35:48,770 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 35 transitions. Word has length 32 [2020-08-19 03:35:48,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:48,770 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 35 transitions. [2020-08-19 03:35:48,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 03:35:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 35 transitions. [2020-08-19 03:35:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 03:35:48,772 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:48,772 INFO L422 BasicCegarLoop]: trace histogram [10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:48,772 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 03:35:48,773 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:48,773 INFO L82 PathProgramCache]: Analyzing trace with hash 1117876356, now seen corresponding path program 9 times [2020-08-19 03:35:48,773 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:48,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1636297558] [2020-08-19 03:35:48,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:48,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:48,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-08-19 03:35:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:48,969 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:48,969 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1636297558] [2020-08-19 03:35:48,969 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:48,969 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-08-19 03:35:48,970 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755557112] [2020-08-19 03:35:48,970 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 03:35:48,970 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:48,971 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 03:35:48,971 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2020-08-19 03:35:48,971 INFO L87 Difference]: Start difference. First operand 35 states and 35 transitions. Second operand 15 states. [2020-08-19 03:35:49,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:49,221 INFO L93 Difference]: Finished difference Result 45 states and 45 transitions. [2020-08-19 03:35:49,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-08-19 03:35:49,223 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 34 [2020-08-19 03:35:49,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:49,224 INFO L225 Difference]: With dead ends: 45 [2020-08-19 03:35:49,224 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 03:35:49,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2020-08-19 03:35:49,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 03:35:49,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-08-19 03:35:49,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-08-19 03:35:49,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 37 transitions. [2020-08-19 03:35:49,231 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 37 transitions. Word has length 34 [2020-08-19 03:35:49,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:49,231 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 37 transitions. [2020-08-19 03:35:49,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 03:35:49,231 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 37 transitions. [2020-08-19 03:35:49,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-19 03:35:49,232 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:49,232 INFO L422 BasicCegarLoop]: trace histogram [11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:49,233 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 03:35:49,233 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:49,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:49,233 INFO L82 PathProgramCache]: Analyzing trace with hash 480004671, now seen corresponding path program 10 times [2020-08-19 03:35:49,234 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:49,234 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1385788225] [2020-08-19 03:35:49,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:49,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:49,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:49,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:49,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-08-19 03:35:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:49,883 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 0 proven. 110 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:49,884 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1385788225] [2020-08-19 03:35:49,884 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:49,884 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-08-19 03:35:49,885 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762249648] [2020-08-19 03:35:49,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-08-19 03:35:49,886 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:49,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-08-19 03:35:49,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-08-19 03:35:49,887 INFO L87 Difference]: Start difference. First operand 37 states and 37 transitions. Second operand 21 states. [2020-08-19 03:35:50,216 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 107 [2020-08-19 03:35:50,560 WARN L193 SmtUtils]: Spent 310.00 ms on a formula simplification. DAG size of input: 119 DAG size of output: 110 [2020-08-19 03:35:50,846 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 100 [2020-08-19 03:35:51,174 WARN L193 SmtUtils]: Spent 292.00 ms on a formula simplification. DAG size of input: 115 DAG size of output: 106 [2020-08-19 03:35:51,446 WARN L193 SmtUtils]: Spent 230.00 ms on a formula simplification. DAG size of input: 100 DAG size of output: 91 [2020-08-19 03:35:51,727 WARN L193 SmtUtils]: Spent 241.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 98 [2020-08-19 03:35:51,955 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 82 [2020-08-19 03:35:52,250 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 95 DAG size of output: 89 [2020-08-19 03:35:52,458 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 74 [2020-08-19 03:35:52,735 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 81 [2020-08-19 03:35:52,901 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2020-08-19 03:35:53,127 WARN L193 SmtUtils]: Spent 184.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-08-19 03:35:53,445 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2020-08-19 03:35:53,770 WARN L193 SmtUtils]: Spent 134.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-08-19 03:35:54,029 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 45 [2020-08-19 03:35:54,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:54,497 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-08-19 03:35:54,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-08-19 03:35:54,498 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 36 [2020-08-19 03:35:54,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:54,500 INFO L225 Difference]: With dead ends: 44 [2020-08-19 03:35:54,501 INFO L226 Difference]: Without dead ends: 39 [2020-08-19 03:35:54,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 366 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=457, Invalid=1523, Unknown=0, NotChecked=0, Total=1980 [2020-08-19 03:35:54,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-08-19 03:35:54,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-08-19 03:35:54,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 03:35:54,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2020-08-19 03:35:54,513 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2020-08-19 03:35:54,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:54,514 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2020-08-19 03:35:54,514 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-08-19 03:35:54,514 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2020-08-19 03:35:54,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-19 03:35:54,515 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:35:54,515 INFO L422 BasicCegarLoop]: trace histogram [12, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:35:54,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 03:35:54,515 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:35:54,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:35:54,516 INFO L82 PathProgramCache]: Analyzing trace with hash 1665638714, now seen corresponding path program 11 times [2020-08-19 03:35:54,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:35:54,516 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447596126] [2020-08-19 03:35:54,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:35:54,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:54,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:35:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-08-19 03:35:54,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:35:54,705 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 112 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:35:54,705 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447596126] [2020-08-19 03:35:54,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:35:54,705 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-08-19 03:35:54,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857874300] [2020-08-19 03:35:54,706 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-08-19 03:35:54,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:35:54,707 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-08-19 03:35:54,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-08-19 03:35:54,707 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand 16 states. [2020-08-19 03:35:54,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:35:54,798 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2020-08-19 03:35:54,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-08-19 03:35:54,799 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 38 [2020-08-19 03:35:54,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:35:54,799 INFO L225 Difference]: With dead ends: 39 [2020-08-19 03:35:54,799 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:35:54,800 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=99, Invalid=173, Unknown=0, NotChecked=0, Total=272 [2020-08-19 03:35:54,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:35:54,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:35:54,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:35:54,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:35:54,801 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-08-19 03:35:54,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:35:54,802 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:35:54,802 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-08-19 03:35:54,802 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:35:54,802 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:35:54,802 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 03:35:54,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:35:55,531 WARN L193 SmtUtils]: Spent 654.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 106 [2020-08-19 03:35:55,544 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 03:35:55,545 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-19 03:35:55,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:35:55,545 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:35:55,545 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-19 03:35:55,546 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 03:35:55,546 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 03:35:55,546 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-08-19 03:35:55,546 INFO L268 CegarLoopResult]: For program point L29-1(lines 29 31) no Hoare annotation was computed. [2020-08-19 03:35:55,546 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 38) no Hoare annotation was computed. [2020-08-19 03:35:55,546 INFO L268 CegarLoopResult]: For program point L21(lines 21 32) no Hoare annotation was computed. [2020-08-19 03:35:55,546 INFO L268 CegarLoopResult]: For program point L21-2(lines 21 32) no Hoare annotation was computed. [2020-08-19 03:35:55,547 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 38) no Hoare annotation was computed. [2020-08-19 03:35:55,547 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 36) no Hoare annotation was computed. [2020-08-19 03:35:55,547 INFO L264 CegarLoopResult]: At program point L30(lines 15 38) the Hoare annotation is: false [2020-08-19 03:35:55,547 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 14 38) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-19 03:35:55,547 INFO L268 CegarLoopResult]: For program point L26-1(lines 26 28) no Hoare annotation was computed. [2020-08-19 03:35:55,548 INFO L264 CegarLoopResult]: At program point L26-3(lines 26 28) the Hoare annotation is: (let ((.cse0 (= |main_~#ad1~0.offset| 0)) (.cse3 (select |#memory_int| |main_~#ad1~0.base|)) (.cse4 (* main_~i~0 8)) (.cse2 (select (select |#memory_int| main_~pa~0.base) main_~pa~0.offset))) (or (let ((.cse1 (+ main_~i~0 7))) (and .cse0 (<= .cse1 .cse2) (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 56)) .cse1) (<= .cse2 .cse1))) (let ((.cse5 (+ main_~i~0 4))) (and .cse0 (= .cse5 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 32))) (<= .cse5 .cse2) (<= .cse2 .cse5))) (and .cse0 (<= .cse2 main_~i~0) (= main_~i~0 (select .cse3 (+ .cse4 |main_~#ad1~0.offset|)))) (let ((.cse6 (+ main_~i~0 10))) (and (= .cse6 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 80)) .cse6))) (let ((.cse7 (+ main_~i~0 3))) (and (= .cse7 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 24))) .cse0 (<= .cse2 .cse7) (<= .cse7 .cse2))) (let ((.cse8 (+ main_~i~0 8))) (and .cse0 (<= .cse8 .cse2) (= .cse8 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 64))) (<= .cse2 .cse8))) (let ((.cse9 (+ main_~i~0 1))) (and (<= .cse9 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 8)) .cse9) (<= .cse2 .cse9))) (let ((.cse10 (+ main_~i~0 5))) (and (<= .cse2 .cse10) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 40)) .cse10) (<= .cse10 .cse2))) (let ((.cse11 (+ main_~i~0 9))) (and (<= .cse11 .cse2) .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 72)) .cse11) (<= .cse2 .cse11))) (let ((.cse12 (+ main_~i~0 2))) (and .cse0 (<= .cse12 .cse2) (= .cse12 (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 16))) (<= .cse2 .cse12))) (let ((.cse13 (+ main_~i~0 6))) (and .cse0 (= (select .cse3 (+ .cse4 |main_~#ad1~0.offset| 48)) .cse13) (<= .cse13 .cse2) (<= .cse2 .cse13))))) [2020-08-19 03:35:55,548 INFO L264 CegarLoopResult]: At program point L26-4(lines 26 28) the Hoare annotation is: (and (= |main_~#ad1~0.offset| 0) (= main_~i~0 (select (select |#memory_int| |main_~#ad1~0.base|) (+ (* main_~i~0 8) |main_~#ad1~0.offset|)))) [2020-08-19 03:35:55,548 INFO L271 CegarLoopResult]: At program point checkENTRY(lines 9 12) the Hoare annotation is: true [2020-08-19 03:35:55,548 INFO L268 CegarLoopResult]: For program point checkFINAL(lines 9 12) no Hoare annotation was computed. [2020-08-19 03:35:55,548 INFO L268 CegarLoopResult]: For program point checkEXIT(lines 9 12) no Hoare annotation was computed. [2020-08-19 03:35:55,565 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,566 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,567 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,567 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,567 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,568 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,569 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,570 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,571 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,572 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,572 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,572 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,572 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,573 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,573 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,573 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,573 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,574 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,583 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,584 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,585 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,585 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,585 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,585 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,586 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,587 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,587 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,587 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,587 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,588 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,589 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,590 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,591 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:35:55 BoogieIcfgContainer [2020-08-19 03:35:55,595 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:35:55,597 INFO L168 Benchmark]: Toolchain (without parser) took 11027.03 ms. Allocated memory was 140.5 MB in the beginning and 317.7 MB in the end (delta: 177.2 MB). Free memory was 103.9 MB in the beginning and 195.2 MB in the end (delta: -91.3 MB). Peak memory consumption was 164.7 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:55,598 INFO L168 Benchmark]: CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-19 03:35:55,598 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.06 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 93.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:55,599 INFO L168 Benchmark]: Boogie Preprocessor took 111.03 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 180.8 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:55,600 INFO L168 Benchmark]: RCFGBuilder took 445.99 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 166.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:55,601 INFO L168 Benchmark]: TraceAbstraction took 10201.79 ms. Allocated memory was 203.4 MB in the beginning and 317.7 MB in the end (delta: 114.3 MB). Free memory was 166.2 MB in the beginning and 195.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 164.0 MB. Max. memory is 7.1 GB. [2020-08-19 03:35:55,604 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31 ms. Allocated memory is still 140.5 MB. Free memory was 122.1 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.06 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 93.3 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.03 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 93.3 MB in the beginning and 180.8 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 445.99 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 166.9 MB in the end (delta: 13.9 MB). Peak memory consumption was 13.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10201.79 ms. Allocated memory was 203.4 MB in the beginning and 317.7 MB in the end (delta: 114.3 MB). Free memory was 166.2 MB in the beginning and 195.2 MB in the end (delta: -29.0 MB). Peak memory consumption was 164.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 36]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 26]: Loop Invariant [2020-08-19 03:35:55,619 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,620 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,621 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,622 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,623 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,624 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,625 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,626 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,629 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,630 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,631 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,631 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,631 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,631 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,632 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,633 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,633 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,633 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,633 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,633 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,634 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,635 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,635 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-08-19 03:35:55,635 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: ((((((((((((ad1 == 0 && i + 7 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 56] == i + 7) && unknown-#memory_int-unknown[pa][pa] <= i + 7) || (((ad1 == 0 && i + 4 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 32]) && i + 4 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 4)) || ((ad1 == 0 && unknown-#memory_int-unknown[pa][pa] <= i) && i == unknown-#memory_int-unknown[ad1][i * 8 + ad1])) || ((i + 10 == unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 80] == i + 10)) || (((i + 3 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 24] && ad1 == 0) && unknown-#memory_int-unknown[pa][pa] <= i + 3) && i + 3 <= unknown-#memory_int-unknown[pa][pa])) || (((ad1 == 0 && i + 8 <= unknown-#memory_int-unknown[pa][pa]) && i + 8 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 64]) && unknown-#memory_int-unknown[pa][pa] <= i + 8)) || (((i + 1 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 8] == i + 1) && unknown-#memory_int-unknown[pa][pa] <= i + 1)) || (((unknown-#memory_int-unknown[pa][pa] <= i + 5 && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 40] == i + 5) && i + 5 <= unknown-#memory_int-unknown[pa][pa])) || (((i + 9 <= unknown-#memory_int-unknown[pa][pa] && ad1 == 0) && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 72] == i + 9) && unknown-#memory_int-unknown[pa][pa] <= i + 9)) || (((ad1 == 0 && i + 2 <= unknown-#memory_int-unknown[pa][pa]) && i + 2 == unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 16]) && unknown-#memory_int-unknown[pa][pa] <= i + 2)) || (((ad1 == 0 && unknown-#memory_int-unknown[ad1][i * 8 + ad1 + 48] == i + 6) && i + 6 <= unknown-#memory_int-unknown[pa][pa]) && unknown-#memory_int-unknown[pa][pa] <= i + 6) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 12, AutomataDifference: 6.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.7s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 165 SDtfs, 122 SDslu, 661 SDs, 0 SdLazy, 896 SolverSat, 73 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 255 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 657 ImplicationChecksByTransitivity, 6.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 13 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 406 HoareAnnotationTreeSize, 20 FomulaSimplifications, 343 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 1565 FormulaSimplificationTreeSizeReductionInter, 0.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 2.0s InterpolantComputationTime, 339 NumberOfCodeBlocks, 339 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 326 ConstructedInterpolants, 0 QuantifiedInterpolants, 68375 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 2 PerfectInterpolantSequences, 112/572 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...