/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=0.4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 06:09:08,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-19 06:09:08,541 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-19 06:09:08,587 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-19 06:09:08,588 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 06:09:08,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 06:09:08,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 06:09:08,605 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 06:09:08,607 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 06:09:08,609 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 06:09:08,610 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 06:09:08,611 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 06:09:08,611 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 06:09:08,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 06:09:08,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 06:09:08,614 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 06:09:08,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 06:09:08,615 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 06:09:08,617 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 06:09:08,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 06:09:08,620 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 06:09:08,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 06:09:08,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 06:09:08,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 06:09:08,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-19 06:09:08,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-19 06:09:08,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-19 06:09:08,627 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-19 06:09:08,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-19 06:09:08,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-19 06:09:08,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-19 06:09:08,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-19 06:09:08,630 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-19 06:09:08,630 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-19 06:09:08,631 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-19 06:09:08,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-19 06:09:08,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-19 06:09:08,632 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-19 06:09:08,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 06:09:08,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 06:09:08,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 06:09:08,635 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 06:09:08,657 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 06:09:08,657 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 06:09:08,659 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 06:09:08,659 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 06:09:08,659 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 06:09:08,659 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 06:09:08,660 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 06:09:08,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 06:09:08,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 06:09:08,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 06:09:08,660 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 06:09:08,660 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 06:09:08,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 06:09:08,661 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 06:09:08,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 06:09:08,661 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 06:09:08,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 06:09:08,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 06:09:08,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 06:09:08,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 06:09:08,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 06:09:08,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 06:09:08,663 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 06:09:08,663 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 06:09:08,663 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 06:09:08,663 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 06:09:08,663 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 06:09:08,664 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 06:09:08,664 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 06:09:08,664 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=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4; [2020-08-19 06:09:08,952 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 06:09:08,972 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 06:09:08,978 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 06:09:08,981 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 06:09:08,981 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 06:09:08,982 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-19 06:09:09,048 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36c76b9d0/425b040a27914fa4af07a8b6b07191dc/FLAG26acee219 [2020-08-19 06:09:09,490 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 06:09:09,491 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt5.c [2020-08-19 06:09:09,498 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36c76b9d0/425b040a27914fa4af07a8b6b07191dc/FLAG26acee219 [2020-08-19 06:09:09,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36c76b9d0/425b040a27914fa4af07a8b6b07191dc [2020-08-19 06:09:09,529 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 06:09:09,531 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 06:09:09,532 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:09,532 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 06:09:09,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 06:09:09,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@263e4b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09, skipping insertion in model container [2020-08-19 06:09:09,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 06:09:09,567 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 06:09:09,749 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:09,753 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 06:09:09,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 06:09:09,791 INFO L208 MainTranslator]: Completed translation [2020-08-19 06:09:09,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09 WrapperNode [2020-08-19 06:09:09,792 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 06:09:09,793 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 06:09:09,793 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 06:09:09,793 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 06:09:09,808 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,809 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,925 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,925 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,930 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,935 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,936 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (1/1) ... [2020-08-19 06:09:09,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 06:09:09,938 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 06:09:09,938 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 06:09:09,938 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 06:09:09,939 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (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 06:09:10,002 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 06:09:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 06:09:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-19 06:09:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 06:09:10,003 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 06:09:10,003 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 06:09:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-19 06:09:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-19 06:09:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 06:09:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-19 06:09:10,004 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 06:09:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 06:09:10,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 06:09:10,220 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 06:09:10,220 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 06:09:10,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:10 BoogieIcfgContainer [2020-08-19 06:09:10,224 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 06:09:10,225 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 06:09:10,225 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 06:09:10,228 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 06:09:10,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 06:09:09" (1/3) ... [2020-08-19 06:09:10,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c6773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:10, skipping insertion in model container [2020-08-19 06:09:10,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 06:09:09" (2/3) ... [2020-08-19 06:09:10,230 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a1c6773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 06:09:10, skipping insertion in model container [2020-08-19 06:09:10,230 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 06:09:10" (3/3) ... [2020-08-19 06:09:10,232 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt5.c [2020-08-19 06:09:10,243 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 06:09:10,250 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 06:09:10,278 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 06:09:10,328 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 06:09:10,328 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 06:09:10,328 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 06:09:10,328 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 06:09:10,329 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 06:09:10,329 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 06:09:10,329 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 06:09:10,329 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 06:09:10,350 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-08-19 06:09:10,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 06:09:10,361 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:10,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:10,362 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:10,370 INFO L82 PathProgramCache]: Analyzing trace with hash 333887070, now seen corresponding path program 1 times [2020-08-19 06:09:10,382 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:10,382 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1392653332] [2020-08-19 06:09:10,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:10,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:10,508 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 06:09:10,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1392653332] [2020-08-19 06:09:10,510 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:10,510 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 06:09:10,511 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203783644] [2020-08-19 06:09:10,515 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 06:09:10,515 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:10,529 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 06:09:10,530 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 06:09:10,532 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-08-19 06:09:10,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:10,588 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-19 06:09:10,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 06:09:10,591 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-19 06:09:10,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:10,599 INFO L225 Difference]: With dead ends: 37 [2020-08-19 06:09:10,600 INFO L226 Difference]: Without dead ends: 18 [2020-08-19 06:09:10,603 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 06:09:10,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-08-19 06:09:10,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2020-08-19 06:09:10,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 06:09:10,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 22 transitions. [2020-08-19 06:09:10,640 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 22 transitions. Word has length 12 [2020-08-19 06:09:10,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:10,640 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 22 transitions. [2020-08-19 06:09:10,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 06:09:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 22 transitions. [2020-08-19 06:09:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-19 06:09:10,642 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:10,642 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:10,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 06:09:10,643 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:10,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:10,645 INFO L82 PathProgramCache]: Analyzing trace with hash 309875524, now seen corresponding path program 1 times [2020-08-19 06:09:10,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:10,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839420483] [2020-08-19 06:09:10,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:10,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:10,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:11,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839420483] [2020-08-19 06:09:11,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:11,000 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:09:11,000 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34639919] [2020-08-19 06:09:11,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:09:11,002 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:11,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:09:11,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:09:11,003 INFO L87 Difference]: Start difference. First operand 18 states and 22 transitions. Second operand 7 states. [2020-08-19 06:09:15,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:15,357 INFO L93 Difference]: Finished difference Result 26 states and 32 transitions. [2020-08-19 06:09:15,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:09:15,359 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-19 06:09:15,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:15,360 INFO L225 Difference]: With dead ends: 26 [2020-08-19 06:09:15,361 INFO L226 Difference]: Without dead ends: 21 [2020-08-19 06:09:15,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-19 06:09:15,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-08-19 06:09:15,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2020-08-19 06:09:15,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-08-19 06:09:15,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 23 transitions. [2020-08-19 06:09:15,370 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 23 transitions. Word has length 12 [2020-08-19 06:09:15,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:15,371 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 23 transitions. [2020-08-19 06:09:15,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:09:15,371 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 23 transitions. [2020-08-19 06:09:15,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-19 06:09:15,372 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:15,372 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:15,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 06:09:15,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:15,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:15,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1451693947, now seen corresponding path program 1 times [2020-08-19 06:09:15,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:15,375 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072605840] [2020-08-19 06:09:15,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:15,957 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 31 [2020-08-19 06:09:16,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:16,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:16,158 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 06:09:16,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1072605840] [2020-08-19 06:09:16,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:16,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-08-19 06:09:16,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967274364] [2020-08-19 06:09:16,160 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-08-19 06:09:16,160 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:16,162 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-08-19 06:09:16,162 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-08-19 06:09:16,162 INFO L87 Difference]: Start difference. First operand 19 states and 23 transitions. Second operand 13 states. [2020-08-19 06:09:18,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:18,764 INFO L93 Difference]: Finished difference Result 40 states and 54 transitions. [2020-08-19 06:09:18,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 06:09:18,766 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 15 [2020-08-19 06:09:18,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:18,768 INFO L225 Difference]: With dead ends: 40 [2020-08-19 06:09:18,768 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 06:09:18,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=94, Invalid=286, Unknown=0, NotChecked=0, Total=380 [2020-08-19 06:09:18,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 06:09:18,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 22. [2020-08-19 06:09:18,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-19 06:09:18,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 26 transitions. [2020-08-19 06:09:18,775 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 26 transitions. Word has length 15 [2020-08-19 06:09:18,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:18,776 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 26 transitions. [2020-08-19 06:09:18,776 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-08-19 06:09:18,776 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 26 transitions. [2020-08-19 06:09:18,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-19 06:09:18,777 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:18,777 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:18,777 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 06:09:18,777 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:18,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:18,778 INFO L82 PathProgramCache]: Analyzing trace with hash -162414684, now seen corresponding path program 2 times [2020-08-19 06:09:18,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:18,778 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135546615] [2020-08-19 06:09:18,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:18,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:19,200 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 06:09:19,201 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135546615] [2020-08-19 06:09:19,201 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:19,201 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 06:09:19,201 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950137270] [2020-08-19 06:09:19,203 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:09:19,203 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:19,204 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:09:19,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:09:19,204 INFO L87 Difference]: Start difference. First operand 22 states and 26 transitions. Second operand 8 states. [2020-08-19 06:09:19,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:19,531 INFO L93 Difference]: Finished difference Result 38 states and 50 transitions. [2020-08-19 06:09:19,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:09:19,532 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 18 [2020-08-19 06:09:19,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:19,533 INFO L225 Difference]: With dead ends: 38 [2020-08-19 06:09:19,533 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 06:09:19,534 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-08-19 06:09:19,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 06:09:19,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2020-08-19 06:09:19,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-08-19 06:09:19,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2020-08-19 06:09:19,546 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 18 [2020-08-19 06:09:19,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:19,546 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2020-08-19 06:09:19,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:09:19,547 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2020-08-19 06:09:19,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 06:09:19,549 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:19,549 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 06:09:19,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 06:09:19,550 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:19,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:19,550 INFO L82 PathProgramCache]: Analyzing trace with hash -444322542, now seen corresponding path program 1 times [2020-08-19 06:09:19,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:19,551 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1934189373] [2020-08-19 06:09:19,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:19,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:19,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:19,689 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 06:09:19,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1934189373] [2020-08-19 06:09:19,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:19,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 06:09:19,690 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425652959] [2020-08-19 06:09:19,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:09:19,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:19,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:09:19,692 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:09:19,692 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 5 states. [2020-08-19 06:09:19,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:19,813 INFO L93 Difference]: Finished difference Result 38 states and 49 transitions. [2020-08-19 06:09:19,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:09:19,814 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 06:09:19,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:19,815 INFO L225 Difference]: With dead ends: 38 [2020-08-19 06:09:19,815 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 06:09:19,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:09:19,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 06:09:19,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 24. [2020-08-19 06:09:19,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 06:09:19,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-08-19 06:09:19,828 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 19 [2020-08-19 06:09:19,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:19,829 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-08-19 06:09:19,829 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:09:19,829 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-08-19 06:09:19,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-08-19 06:09:19,830 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:19,830 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:19,830 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 06:09:19,830 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:19,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:19,831 INFO L82 PathProgramCache]: Analyzing trace with hash -450980439, now seen corresponding path program 1 times [2020-08-19 06:09:19,831 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:19,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640615370] [2020-08-19 06:09:19,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:19,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:20,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:20,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:20,205 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 06:09:20,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640615370] [2020-08-19 06:09:20,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:20,206 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 06:09:20,206 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268861720] [2020-08-19 06:09:20,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 06:09:20,207 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:20,207 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 06:09:20,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-08-19 06:09:20,207 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-08-19 06:09:24,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:24,548 INFO L93 Difference]: Finished difference Result 37 states and 46 transitions. [2020-08-19 06:09:24,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:09:24,549 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-08-19 06:09:24,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:24,550 INFO L225 Difference]: With dead ends: 37 [2020-08-19 06:09:24,550 INFO L226 Difference]: Without dead ends: 26 [2020-08-19 06:09:24,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:09:24,551 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-19 06:09:24,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-19 06:09:24,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-19 06:09:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 29 transitions. [2020-08-19 06:09:24,557 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 29 transitions. Word has length 20 [2020-08-19 06:09:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:24,557 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 29 transitions. [2020-08-19 06:09:24,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 06:09:24,557 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 29 transitions. [2020-08-19 06:09:24,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 06:09:24,564 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:24,564 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:24,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 06:09:24,565 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:24,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:24,565 INFO L82 PathProgramCache]: Analyzing trace with hash -514824137, now seen corresponding path program 1 times [2020-08-19 06:09:24,565 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:24,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [507559556] [2020-08-19 06:09:24,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:24,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:24,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:24,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:24,688 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 06:09:24,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [507559556] [2020-08-19 06:09:24,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:24,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 06:09:24,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078038483] [2020-08-19 06:09:24,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 06:09:24,691 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:24,691 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 06:09:24,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 06:09:24,691 INFO L87 Difference]: Start difference. First operand 25 states and 29 transitions. Second operand 5 states. [2020-08-19 06:09:24,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:24,792 INFO L93 Difference]: Finished difference Result 38 states and 47 transitions. [2020-08-19 06:09:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 06:09:24,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-08-19 06:09:24,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:24,793 INFO L225 Difference]: With dead ends: 38 [2020-08-19 06:09:24,794 INFO L226 Difference]: Without dead ends: 27 [2020-08-19 06:09:24,794 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 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 06:09:24,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-08-19 06:09:24,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-08-19 06:09:24,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-19 06:09:24,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2020-08-19 06:09:24,800 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 21 [2020-08-19 06:09:24,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:24,800 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2020-08-19 06:09:24,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 06:09:24,800 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2020-08-19 06:09:24,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-08-19 06:09:24,801 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:24,801 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:24,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 06:09:24,801 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:24,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:24,802 INFO L82 PathProgramCache]: Analyzing trace with hash 1260183225, now seen corresponding path program 1 times [2020-08-19 06:09:24,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:24,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143016489] [2020-08-19 06:09:24,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:25,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:25,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:25,442 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 06:09:25,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143016489] [2020-08-19 06:09:25,443 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:25,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-19 06:09:25,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593655358] [2020-08-19 06:09:25,444 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-08-19 06:09:25,445 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:25,445 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-08-19 06:09:25,446 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-08-19 06:09:25,446 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 15 states. [2020-08-19 06:09:26,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:26,220 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2020-08-19 06:09:26,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-19 06:09:26,223 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 21 [2020-08-19 06:09:26,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:26,224 INFO L225 Difference]: With dead ends: 37 [2020-08-19 06:09:26,224 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 06:09:26,225 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=128, Invalid=472, Unknown=0, NotChecked=0, Total=600 [2020-08-19 06:09:26,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 06:09:26,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 28. [2020-08-19 06:09:26,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-08-19 06:09:26,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-08-19 06:09:26,234 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-08-19 06:09:26,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:26,235 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-08-19 06:09:26,235 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-08-19 06:09:26,235 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-08-19 06:09:26,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-19 06:09:26,236 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:26,236 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:26,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 06:09:26,237 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:26,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:26,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1035578608, now seen corresponding path program 2 times [2020-08-19 06:09:26,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:26,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1514187488] [2020-08-19 06:09:26,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:26,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:26,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:26,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:26,411 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 06:09:26,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1514187488] [2020-08-19 06:09:26,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:26,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 06:09:26,414 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548973624] [2020-08-19 06:09:26,415 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:09:26,415 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:26,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:09:26,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:09:26,417 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-08-19 06:09:30,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:30,730 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2020-08-19 06:09:30,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:09:30,731 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 24 [2020-08-19 06:09:30,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:30,732 INFO L225 Difference]: With dead ends: 41 [2020-08-19 06:09:30,732 INFO L226 Difference]: Without dead ends: 30 [2020-08-19 06:09:30,733 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:09:30,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-08-19 06:09:30,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-08-19 06:09:30,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-19 06:09:30,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-08-19 06:09:30,739 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 24 [2020-08-19 06:09:30,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:30,740 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-08-19 06:09:30,740 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:09:30,740 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-08-19 06:09:30,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 06:09:30,741 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:30,741 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:30,741 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 06:09:30,741 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:30,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:30,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1961236154, now seen corresponding path program 1 times [2020-08-19 06:09:30,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:30,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044395574] [2020-08-19 06:09:30,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:30,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:30,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:30,871 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:30,871 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044395574] [2020-08-19 06:09:30,871 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:30,872 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 06:09:30,872 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225051823] [2020-08-19 06:09:30,873 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:09:30,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:30,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:09:30,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:09:30,874 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 6 states. [2020-08-19 06:09:31,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:31,017 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2020-08-19 06:09:31,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 06:09:31,018 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-08-19 06:09:31,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:31,019 INFO L225 Difference]: With dead ends: 44 [2020-08-19 06:09:31,019 INFO L226 Difference]: Without dead ends: 33 [2020-08-19 06:09:31,019 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:09:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-08-19 06:09:31,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-08-19 06:09:31,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 06:09:31,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-08-19 06:09:31,025 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 25 [2020-08-19 06:09:31,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:31,026 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-08-19 06:09:31,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:09:31,026 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-08-19 06:09:31,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-19 06:09:31,027 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:31,027 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:31,027 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 06:09:31,027 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:31,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:31,028 INFO L82 PathProgramCache]: Analyzing trace with hash -230662155, now seen corresponding path program 1 times [2020-08-19 06:09:31,028 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:31,028 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152495839] [2020-08-19 06:09:31,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:31,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:31,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:31,341 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 06:09:31,341 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152495839] [2020-08-19 06:09:31,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 06:09:31,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 06:09:31,342 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821653874] [2020-08-19 06:09:31,342 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 06:09:31,343 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:31,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 06:09:31,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-19 06:09:31,344 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-08-19 06:09:39,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:39,325 INFO L93 Difference]: Finished difference Result 43 states and 52 transitions. [2020-08-19 06:09:39,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 06:09:39,326 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-08-19 06:09:39,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:39,326 INFO L225 Difference]: With dead ends: 43 [2020-08-19 06:09:39,327 INFO L226 Difference]: Without dead ends: 32 [2020-08-19 06:09:39,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-19 06:09:39,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-19 06:09:39,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 31. [2020-08-19 06:09:39,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-19 06:09:39,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-08-19 06:09:39,334 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 26 [2020-08-19 06:09:39,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:39,334 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-08-19 06:09:39,334 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 06:09:39,335 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-08-19 06:09:39,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-08-19 06:09:39,335 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 06:09:39,336 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 06:09:39,336 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 06:09:39,336 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 06:09:39,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 06:09:39,337 INFO L82 PathProgramCache]: Analyzing trace with hash 2020075371, now seen corresponding path program 1 times [2020-08-19 06:09:39,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 06:09:39,337 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973745939] [2020-08-19 06:09:39,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 06:09:39,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:39,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 06:09:39,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 06:09:39,466 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-08-19 06:09:39,466 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973745939] [2020-08-19 06:09:39,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 06:09:39,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-19 06:09:39,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [258113254] [2020-08-19 06:09:39,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 06:09:39,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 06:09:39,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 06:09:39,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-19 06:09:39,468 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-08-19 06:09:39,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 06:09:39,589 INFO L93 Difference]: Finished difference Result 31 states and 35 transitions. [2020-08-19 06:09:39,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 06:09:39,590 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-08-19 06:09:39,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 06:09:39,591 INFO L225 Difference]: With dead ends: 31 [2020-08-19 06:09:39,591 INFO L226 Difference]: Without dead ends: 0 [2020-08-19 06:09:39,591 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-08-19 06:09:39,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-19 06:09:39,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-19 06:09:39,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-19 06:09:39,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-19 06:09:39,593 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 27 [2020-08-19 06:09:39,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 06:09:39,593 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-19 06:09:39,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 06:09:39,593 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-19 06:09:39,593 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-19 06:09:39,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 06:09:39,596 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-19 06:09:39,755 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-19 06:09:39,756 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-19 06:09:39,756 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:09:39,756 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-19 06:09:39,756 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-19 06:09:39,756 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-19 06:09:39,756 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-19 06:09:39,756 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-19 06:09:39,756 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-19 06:09:39,757 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-19 06:09:39,757 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-19 06:09:39,757 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-08-19 06:09:39,757 INFO L268 CegarLoopResult]: For program point L27(lines 27 30) no Hoare annotation was computed. [2020-08-19 06:09:39,757 INFO L268 CegarLoopResult]: For program point L25(lines 25 30) no Hoare annotation was computed. [2020-08-19 06:09:39,757 INFO L268 CegarLoopResult]: For program point L27-2(lines 21 30) no Hoare annotation was computed. [2020-08-19 06:09:39,758 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 35) no Hoare annotation was computed. [2020-08-19 06:09:39,758 INFO L268 CegarLoopResult]: For program point L23(lines 23 30) no Hoare annotation was computed. [2020-08-19 06:09:39,758 INFO L268 CegarLoopResult]: For program point L21(lines 21 30) no Hoare annotation was computed. [2020-08-19 06:09:39,758 INFO L264 CegarLoopResult]: At program point L19-2(lines 19 32) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 06:09:39,759 INFO L264 CegarLoopResult]: At program point L19-3(lines 19 32) the Hoare annotation is: (or (let ((.cse1 (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0 (* 4294967296 (div main_~l~0 4294967296)))) (.cse0 (* 4294967296 (div (+ main_~i~0 main_~j~0 main_~k~0 main_~v3~0 main_~v4~0) 4294967296)))) (and (<= (+ main_~l~0 .cse0) .cse1) (< .cse1 (+ main_~l~0 .cse0 1)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-19 06:09:39,759 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 35) no Hoare annotation was computed. [2020-08-19 06:09:39,759 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 35) the Hoare annotation is: true [2020-08-19 06:09:39,759 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-08-19 06:09:39,759 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-19 06:09:39,759 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-19 06:09:39,759 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-19 06:09:39,760 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-19 06:09:39,760 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-19 06:09:39,760 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-19 06:09:39,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 06:09:39 BoogieIcfgContainer [2020-08-19 06:09:39,777 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 06:09:39,779 INFO L168 Benchmark]: Toolchain (without parser) took 30248.53 ms. Allocated memory was 140.0 MB in the beginning and 259.5 MB in the end (delta: 119.5 MB). Free memory was 101.5 MB in the beginning and 171.5 MB in the end (delta: -69.9 MB). Peak memory consumption was 49.6 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:39,780 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-19 06:09:39,780 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.62 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:39,781 INFO L168 Benchmark]: Boogie Preprocessor took 144.65 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 91.5 MB in the beginning and 185.1 MB in the end (delta: -93.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:39,782 INFO L168 Benchmark]: RCFGBuilder took 286.40 ms. Allocated memory is still 207.1 MB. Free memory was 185.1 MB in the beginning and 170.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:39,783 INFO L168 Benchmark]: TraceAbstraction took 29551.68 ms. Allocated memory was 207.1 MB in the beginning and 259.5 MB in the end (delta: 52.4 MB). Free memory was 170.3 MB in the beginning and 171.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-08-19 06:09:39,788 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 120.3 MB in the beginning and 120.1 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 260.62 ms. Allocated memory is still 140.0 MB. Free memory was 101.3 MB in the beginning and 91.5 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 144.65 ms. Allocated memory was 140.0 MB in the beginning and 207.1 MB in the end (delta: 67.1 MB). Free memory was 91.5 MB in the beginning and 185.1 MB in the end (delta: -93.6 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 286.40 ms. Allocated memory is still 207.1 MB. Free memory was 185.1 MB in the beginning and 170.9 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 29551.68 ms. Allocated memory was 207.1 MB in the beginning and 259.5 MB in the end (delta: 52.4 MB). Free memory was 170.3 MB in the beginning and 171.5 MB in the end (delta: -1.2 MB). Peak memory consumption was 51.3 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: 19]: Loop Invariant Derived loop invariant: ((l <= i + j + k + v3 + v4 && i + j + k + v3 + v4 <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 29 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 29.2s, OverallIterations: 12, TraceHistogramMax: 3, AutomataDifference: 25.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 152 SDtfs, 505 SDslu, 239 SDs, 0 SdLazy, 741 SolverSat, 130 SolverUnsat, 10 SolverUnknown, 0 SolverNotchecked, 21.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 153 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 186 ImplicationChecksByTransitivity, 5.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=11, 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, 12 MinimizatonAttempts, 24 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 19 PreInvPairs, 27 NumberOfFragments, 98 HoareAnnotationTreeSize, 19 FomulaSimplifications, 530 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 248 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 240 NumberOfCodeBlocks, 240 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 228 ConstructedInterpolants, 0 QuantifiedInterpolants, 52122 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 3 PerfectInterpolantSequences, 42/80 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...