/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/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 03:43:32,504 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 03:43:32,507 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 03:43:32,536 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 03:43:32,536 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 03:43:32,537 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 03:43:32,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 03:43:32,540 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 03:43:32,541 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 03:43:32,542 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 03:43:32,543 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 03:43:32,544 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 03:43:32,544 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 03:43:32,545 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 03:43:32,546 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 03:43:32,547 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 03:43:32,548 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 03:43:32,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 03:43:32,550 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 03:43:32,552 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 03:43:32,553 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 03:43:32,554 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 03:43:32,555 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 03:43:32,556 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 03:43:32,558 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 03:43:32,558 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 03:43:32,558 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 03:43:32,559 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 03:43:32,559 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 03:43:32,560 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 03:43:32,561 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 03:43:32,561 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 03:43:32,562 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 03:43:32,563 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 03:43:32,563 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 03:43:32,564 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 03:43:32,564 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 03:43:32,564 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 03:43:32,565 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 03:43:32,565 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 03:43:32,566 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 03:43:32,567 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 03:43:32,588 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 03:43:32,588 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 03:43:32,590 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 03:43:32,590 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 03:43:32,590 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 03:43:32,590 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 03:43:32,590 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 03:43:32,591 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 03:43:32,591 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 03:43:32,591 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 03:43:32,591 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 03:43:32,591 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 03:43:32,592 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 03:43:32,592 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 03:43:32,592 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 03:43:32,592 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 03:43:32,592 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 03:43:32,593 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 03:43:32,593 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 03:43:32,593 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 03:43:32,593 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 03:43:32,593 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 03:43:32,594 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 03:43:32,594 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 03:43:32,594 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 03:43:32,594 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 03:43:32,594 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 03:43:32,594 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 03:43:32,595 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 03:43:32,595 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 03:43:32,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 03:43:32,889 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 03:43:32,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 03:43:32,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 03:43:32,896 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 03:43:32,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-19 03:43:32,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a806320/3fcd3c10f47b4f11953b6b6be313061b/FLAGa08a97db5 [2020-08-19 03:43:33,335 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 03:43:33,336 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-19 03:43:33,342 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a806320/3fcd3c10f47b4f11953b6b6be313061b/FLAGa08a97db5 [2020-08-19 03:43:33,718 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/54a806320/3fcd3c10f47b4f11953b6b6be313061b [2020-08-19 03:43:33,729 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 03:43:33,731 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 03:43:33,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 03:43:33,732 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 03:43:33,736 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 03:43:33,737 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:33,739 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ebb600b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33, skipping insertion in model container [2020-08-19 03:43:33,739 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:33,747 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 03:43:33,764 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 03:43:33,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:43:33,921 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 03:43:33,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 03:43:33,948 INFO L208 MainTranslator]: Completed translation [2020-08-19 03:43:33,949 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33 WrapperNode [2020-08-19 03:43:33,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 03:43:33,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 03:43:33,950 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 03:43:33,950 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 03:43:33,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:33,959 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:34,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:34,050 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:34,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:34,059 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:34,060 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (1/1) ... [2020-08-19 03:43:34,062 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 03:43:34,062 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 03:43:34,062 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 03:43:34,062 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 03:43:34,063 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (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 03:43:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 03:43:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 03:43:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 03:43:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 03:43:34,112 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 03:43:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 03:43:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 03:43:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 03:43:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 03:43:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 03:43:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 03:43:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 03:43:34,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 03:43:34,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 03:43:34,308 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 03:43:34,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:43:34 BoogieIcfgContainer [2020-08-19 03:43:34,312 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 03:43:34,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 03:43:34,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 03:43:34,317 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 03:43:34,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 03:43:33" (1/3) ... [2020-08-19 03:43:34,318 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4842a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:43:34, skipping insertion in model container [2020-08-19 03:43:34,318 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 03:43:33" (2/3) ... [2020-08-19 03:43:34,319 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4a4842a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 03:43:34, skipping insertion in model container [2020-08-19 03:43:34,319 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 03:43:34" (3/3) ... [2020-08-19 03:43:34,321 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-08-19 03:43:34,335 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 03:43:34,342 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 03:43:34,358 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 03:43:34,387 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 03:43:34,387 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 03:43:34,387 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 03:43:34,387 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 03:43:34,387 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 03:43:34,388 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 03:43:34,388 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 03:43:34,388 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 03:43:34,410 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-19 03:43:34,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 03:43:34,418 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:34,419 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:34,419 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:34,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:34,426 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-08-19 03:43:34,435 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:34,436 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167108903] [2020-08-19 03:43:34,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:34,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:34,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:34,593 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 03:43:34,594 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167108903] [2020-08-19 03:43:34,596 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:43:34,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 03:43:34,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104997021] [2020-08-19 03:43:34,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 03:43:34,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:34,618 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 03:43:34,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 03:43:34,622 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-08-19 03:43:34,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:43:34,702 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-19 03:43:34,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 03:43:34,704 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-19 03:43:34,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:43:34,715 INFO L225 Difference]: With dead ends: 35 [2020-08-19 03:43:34,715 INFO L226 Difference]: Without dead ends: 16 [2020-08-19 03:43:34,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 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 03:43:34,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-19 03:43:34,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-19 03:43:34,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 03:43:34,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-19 03:43:34,751 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-08-19 03:43:34,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:43:34,751 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-19 03:43:34,752 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 03:43:34,752 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-19 03:43:34,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 03:43:34,753 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:34,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:34,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 03:43:34,754 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:34,754 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:34,754 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-08-19 03:43:34,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:34,755 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060986012] [2020-08-19 03:43:34,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:34,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:35,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:35,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:35,098 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 03:43:35,099 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060986012] [2020-08-19 03:43:35,099 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 03:43:35,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 03:43:35,100 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356047717] [2020-08-19 03:43:35,102 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:43:35,102 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:35,102 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:43:35,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:43:35,103 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-08-19 03:43:35,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:43:35,278 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-08-19 03:43:35,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 03:43:35,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-19 03:43:35,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:43:35,282 INFO L225 Difference]: With dead ends: 24 [2020-08-19 03:43:35,282 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 03:43:35,284 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 03:43:35,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 03:43:35,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-08-19 03:43:35,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-19 03:43:35,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-08-19 03:43:35,291 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-08-19 03:43:35,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:43:35,292 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-08-19 03:43:35,292 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:43:35,292 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-08-19 03:43:35,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 03:43:35,293 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:35,293 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:35,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 03:43:35,294 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:35,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:35,295 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-08-19 03:43:35,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:35,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120901008] [2020-08-19 03:43:35,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:35,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:35,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:35,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:43:35,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120901008] [2020-08-19 03:43:35,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:43:35,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 03:43:35,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512297730] [2020-08-19 03:43:35,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-19 03:43:35,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:35,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-19 03:43:35,906 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:43:35,908 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2020-08-19 03:43:40,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:43:40,392 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-08-19 03:43:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 03:43:40,393 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-08-19 03:43:40,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:43:40,395 INFO L225 Difference]: With dead ends: 35 [2020-08-19 03:43:40,395 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 03:43:40,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-08-19 03:43:40,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 03:43:40,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-08-19 03:43:40,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-19 03:43:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-19 03:43:40,406 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-08-19 03:43:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:43:40,407 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-19 03:43:40,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-19 03:43:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-19 03:43:40,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 03:43:40,408 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:40,409 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:40,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 03:43:40,409 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:40,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:40,410 INFO L82 PathProgramCache]: Analyzing trace with hash 396453102, now seen corresponding path program 2 times [2020-08-19 03:43:40,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:40,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111409525] [2020-08-19 03:43:40,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:40,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:40,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:40,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:43:40,737 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111409525] [2020-08-19 03:43:40,737 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:43:40,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 03:43:40,738 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919649027] [2020-08-19 03:43:40,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 03:43:40,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:40,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 03:43:40,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:43:40,740 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-08-19 03:43:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:43:45,128 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-08-19 03:43:45,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 03:43:45,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-19 03:43:45,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:43:45,130 INFO L225 Difference]: With dead ends: 42 [2020-08-19 03:43:45,130 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 03:43:45,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-19 03:43:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 03:43:45,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 21. [2020-08-19 03:43:45,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 03:43:45,138 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-08-19 03:43:45,138 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-08-19 03:43:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:43:45,138 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-08-19 03:43:45,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 03:43:45,139 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-08-19 03:43:45,139 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:43:45,140 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:45,140 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:45,140 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 03:43:45,141 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:45,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:45,141 INFO L82 PathProgramCache]: Analyzing trace with hash -291244452, now seen corresponding path program 1 times [2020-08-19 03:43:45,141 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:45,142 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1174854102] [2020-08-19 03:43:45,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:45,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:45,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:45,264 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:43:45,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1174854102] [2020-08-19 03:43:45,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:43:45,265 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 03:43:45,265 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1693260326] [2020-08-19 03:43:45,266 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 03:43:45,266 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:45,266 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 03:43:45,267 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 03:43:45,267 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-08-19 03:43:45,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:43:45,348 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-08-19 03:43:45,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 03:43:45,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 03:43:45,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:43:45,350 INFO L225 Difference]: With dead ends: 32 [2020-08-19 03:43:45,350 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 03:43:45,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-19 03:43:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 03:43:45,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-19 03:43:45,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 03:43:45,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-08-19 03:43:45,356 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-08-19 03:43:45,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:43:45,357 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-08-19 03:43:45,357 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 03:43:45,357 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-08-19 03:43:45,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 03:43:45,358 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:45,358 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:45,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 03:43:45,359 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:45,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:45,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1483762910, now seen corresponding path program 1 times [2020-08-19 03:43:45,359 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:45,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216217083] [2020-08-19 03:43:45,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:45,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:45,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:45,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:45,985 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:43:45,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216217083] [2020-08-19 03:43:45,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:43:45,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-19 03:43:45,988 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438422697] [2020-08-19 03:43:45,989 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-19 03:43:45,989 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:45,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-19 03:43:45,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-19 03:43:45,991 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 14 states. [2020-08-19 03:43:50,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:43:50,582 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-08-19 03:43:50,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 03:43:50,583 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-08-19 03:43:50,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:43:50,584 INFO L225 Difference]: With dead ends: 31 [2020-08-19 03:43:50,584 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 03:43:50,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-08-19 03:43:50,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 03:43:50,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-19 03:43:50,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 03:43:50,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-08-19 03:43:50,593 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-08-19 03:43:50,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:43:50,594 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-08-19 03:43:50,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-19 03:43:50,594 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-08-19 03:43:50,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 03:43:50,602 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:43:50,602 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:43:50,602 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 03:43:50,602 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:43:50,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:43:50,603 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 2 times [2020-08-19 03:43:50,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:43:50,603 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29734030] [2020-08-19 03:43:50,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:43:50,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:43:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:43:52,819 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 03:43:52,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29734030] [2020-08-19 03:43:52,820 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:43:52,820 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 03:43:52,820 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863520386] [2020-08-19 03:43:52,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 03:43:52,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:43:52,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 03:43:52,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=20, Unknown=1, NotChecked=0, Total=30 [2020-08-19 03:43:52,821 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-08-19 03:44:07,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:07,578 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-08-19 03:44:07,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:44:07,579 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-08-19 03:44:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:07,580 INFO L225 Difference]: With dead ends: 36 [2020-08-19 03:44:07,580 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 03:44:07,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=26, Invalid=59, Unknown=5, NotChecked=0, Total=90 [2020-08-19 03:44:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 03:44:07,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2020-08-19 03:44:07,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 03:44:07,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-19 03:44:07,589 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-08-19 03:44:07,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:07,590 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-19 03:44:07,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 03:44:07,590 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-19 03:44:07,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-19 03:44:07,591 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 03:44:07,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 03:44:07,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 03:44:07,592 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 03:44:07,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 03:44:07,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-08-19 03:44:07,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 03:44:07,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943704902] [2020-08-19 03:44:07,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 03:44:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:07,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 03:44:07,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 03:44:07,824 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-19 03:44:07,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943704902] [2020-08-19 03:44:07,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 03:44:07,824 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 03:44:07,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384792503] [2020-08-19 03:44:07,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 03:44:07,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 03:44:07,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 03:44:07,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-19 03:44:07,826 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-08-19 03:44:07,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 03:44:07,951 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-08-19 03:44:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 03:44:07,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-08-19 03:44:07,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 03:44:07,952 INFO L225 Difference]: With dead ends: 25 [2020-08-19 03:44:07,952 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 03:44:07,953 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-19 03:44:07,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 03:44:07,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 03:44:07,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 03:44:07,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 03:44:07,954 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-08-19 03:44:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 03:44:07,954 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 03:44:07,954 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 03:44:07,954 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 03:44:07,954 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 03:44:07,955 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 03:44:07,957 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 03:44:08,077 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 03:44:08,077 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-19 03:44:08,077 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:44:08,078 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 03:44:08,078 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-19 03:44:08,078 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 03:44:08,078 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 03:44:08,078 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 03:44:08,078 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 03:44:08,078 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 03:44:08,079 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 03:44:08,079 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-08-19 03:44:08,079 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-19 03:44:08,079 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-08-19 03:44:08,079 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-08-19 03:44:08,079 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-08-19 03:44:08,079 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-08-19 03:44:08,080 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-08-19 03:44:08,080 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-08-19 03:44:08,081 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 03:44:08,082 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0 main_~k~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ main_~l~0 (* 4294967296 .cse2)))) (and (< .cse0 (+ main_~i~0 main_~j~0 main_~k~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 main_~k~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 03:44:08,082 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 03:44:08,082 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 03:44:08,082 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 03:44:08,083 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 03:44:08,083 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 03:44:08,084 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 03:44:08,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 03:44:08 BoogieIcfgContainer [2020-08-19 03:44:08,112 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 03:44:08,119 INFO L168 Benchmark]: Toolchain (without parser) took 34382.78 ms. Allocated memory was 147.8 MB in the beginning and 244.3 MB in the end (delta: 96.5 MB). Free memory was 103.5 MB in the beginning and 151.5 MB in the end (delta: -48.0 MB). Peak memory consumption was 48.5 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:08,121 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 03:44:08,122 INFO L168 Benchmark]: CACSL2BoogieTranslator took 217.17 ms. Allocated memory is still 147.8 MB. Free memory was 103.3 MB in the beginning and 93.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:08,123 INFO L168 Benchmark]: Boogie Preprocessor took 112.33 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 93.7 MB in the beginning and 182.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:08,124 INFO L168 Benchmark]: RCFGBuilder took 249.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 169.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:08,127 INFO L168 Benchmark]: TraceAbstraction took 33798.97 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 168.4 MB in the beginning and 151.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2020-08-19 03:44:08,138 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 217.17 ms. Allocated memory is still 147.8 MB. Free memory was 103.3 MB in the beginning and 93.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.33 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 93.7 MB in the beginning and 182.3 MB in the end (delta: -88.6 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 249.91 ms. Allocated memory is still 203.9 MB. Free memory was 182.3 MB in the beginning and 169.1 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 33798.97 ms. Allocated memory was 203.9 MB in the beginning and 244.3 MB in the end (delta: 40.4 MB). Free memory was 168.4 MB in the beginning and 151.5 MB in the end (delta: 16.9 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 22]: Loop Invariant Derived loop invariant: ((l <= i + j + k && i + j + k <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 33.5s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 28.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 184 SDslu, 177 SDs, 0 SdLazy, 408 SolverSat, 72 SolverUnsat, 9 SolverUnknown, 0 SolverNotchecked, 18.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 105 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 12.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=7, 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, 8 MinimizatonAttempts, 22 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 98 HoareAnnotationTreeSize, 15 FomulaSimplifications, 489 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 64 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 4.2s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 26609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 21/41 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...