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 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:16:44,741 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:16:44,748 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:16:44,765 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:16:44,766 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:16:44,768 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:16:44,770 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:16:44,777 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:16:44,779 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:16:44,780 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:16:44,781 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:16:44,785 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:16:44,785 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:16:44,786 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:16:44,790 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:16:44,792 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:16:44,793 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:16:44,794 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:16:44,800 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:16:44,802 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:16:44,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:16:44,807 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:16:44,808 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:16:44,810 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:16:44,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-10-14 23:16:44,821 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:16:44,823 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:16:44,824 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:16:44,824 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:16:44,828 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:16:44,829 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:16:44,829 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:16:44,830 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:16:44,830 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:16:44,832 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:16:44,836 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:16:44,836 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-14 23:16:44,860 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:16:44,860 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:16:44,862 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:16:44,863 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:16:44,863 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:16:44,863 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:16:44,863 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:16:44,864 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:16:44,864 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:16:44,864 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:16:44,865 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:16:44,865 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:16:44,866 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:16:44,866 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:16:44,866 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:16:44,866 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:16:44,867 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:16:44,867 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:16:44,867 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:16:44,867 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:16:44,868 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:16:44,868 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:16:44,868 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:16:44,869 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:16:44,869 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:16:44,869 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:16:44,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:16:44,870 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:16:44,870 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:16:45,153 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:16:45,175 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:16:45,179 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:16:45,180 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:16:45,181 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:16:45,182 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2019-10-14 23:16:45,258 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8498491e/91e3a7d2b29f427f8a072715eb21e40d/FLAG61dc56f14 [2019-10-14 23:16:45,734 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:16:45,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2019-10-14 23:16:45,741 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8498491e/91e3a7d2b29f427f8a072715eb21e40d/FLAG61dc56f14 [2019-10-14 23:16:46,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d8498491e/91e3a7d2b29f427f8a072715eb21e40d [2019-10-14 23:16:46,177 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:16:46,179 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:16:46,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:16:46,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:16:46,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:16:46,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,188 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@214818cd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46, skipping insertion in model container [2019-10-14 23:16:46,188 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,197 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:16:46,212 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:16:46,409 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:16:46,414 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:16:46,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:16:46,444 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:16:46,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46 WrapperNode [2019-10-14 23:16:46,444 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:16:46,445 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:16:46,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:16:46,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:16:46,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,542 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,542 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,545 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,550 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,551 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... [2019-10-14 23:16:46,552 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:16:46,552 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:16:46,552 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:16:46,552 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:16:46,553 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:16:46,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:16:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:16:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-14 23:16:46,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:16:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:16:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-14 23:16:46,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2019-10-14 23:16:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:16:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:16:46,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:16:46,793 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:16:46,794 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-14 23:16:46,795 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:46 BoogieIcfgContainer [2019-10-14 23:16:46,795 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:16:46,797 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:16:46,797 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:16:46,800 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:16:46,800 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:16:46" (1/3) ... [2019-10-14 23:16:46,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22795b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:46, skipping insertion in model container [2019-10-14 23:16:46,817 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:16:46" (2/3) ... [2019-10-14 23:16:46,817 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22795b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:16:46, skipping insertion in model container [2019-10-14 23:16:46,818 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:16:46" (3/3) ... [2019-10-14 23:16:46,820 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2019-10-14 23:16:46,834 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:16:46,846 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:16:46,862 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:16:46,897 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:16:46,897 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:16:46,897 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:16:46,898 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:16:46,898 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:16:46,898 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:16:46,898 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:16:46,898 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:16:46,918 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-14 23:16:46,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:16:46,926 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:46,927 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:46,929 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:46,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:46,937 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2019-10-14 23:16:46,947 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:46,948 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786521475] [2019-10-14 23:16:46,948 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:46,949 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:46,949 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:47,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:47,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:47,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:47,069 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786521475] [2019-10-14 23:16:47,070 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:47,070 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-14 23:16:47,071 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008459322] [2019-10-14 23:16:47,075 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-14 23:16:47,075 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:47,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-14 23:16:47,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:16:47,089 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-14 23:16:47,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:47,113 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2019-10-14 23:16:47,113 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-14 23:16:47,115 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-14 23:16:47,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:47,124 INFO L225 Difference]: With dead ends: 30 [2019-10-14 23:16:47,125 INFO L226 Difference]: Without dead ends: 13 [2019-10-14 23:16:47,128 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-14 23:16:47,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2019-10-14 23:16:47,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2019-10-14 23:16:47,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2019-10-14 23:16:47,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2019-10-14 23:16:47,161 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2019-10-14 23:16:47,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:47,162 INFO L462 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2019-10-14 23:16:47,162 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-14 23:16:47,162 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2019-10-14 23:16:47,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-14 23:16:47,163 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:47,163 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:47,164 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:47,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:47,164 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2019-10-14 23:16:47,165 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:47,165 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962091600] [2019-10-14 23:16:47,165 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:47,166 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:47,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:47,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:47,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:47,262 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962091600] [2019-10-14 23:16:47,262 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:16:47,263 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:16:47,263 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328934284] [2019-10-14 23:16:47,265 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:16:47,265 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:47,265 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:16:47,266 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:16:47,266 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2019-10-14 23:16:47,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:47,319 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2019-10-14 23:16:47,320 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:16:47,320 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2019-10-14 23:16:47,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:47,321 INFO L225 Difference]: With dead ends: 21 [2019-10-14 23:16:47,321 INFO L226 Difference]: Without dead ends: 16 [2019-10-14 23:16:47,322 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:16:47,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-14 23:16:47,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-14 23:16:47,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-14 23:16:47,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-14 23:16:47,328 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-14 23:16:47,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:47,329 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-14 23:16:47,329 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:16:47,329 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-14 23:16:47,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-10-14 23:16:47,330 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:47,330 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:47,330 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:47,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:47,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2019-10-14 23:16:47,331 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:47,332 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228835804] [2019-10-14 23:16:47,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:47,332 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:47,332 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:47,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:47,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:47,631 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:47,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228835804] [2019-10-14 23:16:47,632 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2066370773] [2019-10-14 23:16:47,632 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:47,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:47,682 INFO L256 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-14 23:16:47,689 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:47,843 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:47,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:47,896 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:47,896 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-10-14 23:16:47,896 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419866430] [2019-10-14 23:16:47,897 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-10-14 23:16:47,897 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:47,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-10-14 23:16:47,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2019-10-14 23:16:47,899 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 16 states. [2019-10-14 23:16:48,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:48,156 INFO L93 Difference]: Finished difference Result 37 states and 45 transitions. [2019-10-14 23:16:48,157 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-10-14 23:16:48,157 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 13 [2019-10-14 23:16:48,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:48,158 INFO L225 Difference]: With dead ends: 37 [2019-10-14 23:16:48,159 INFO L226 Difference]: Without dead ends: 22 [2019-10-14 23:16:48,160 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=306, Unknown=0, NotChecked=0, Total=380 [2019-10-14 23:16:48,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-14 23:16:48,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 20. [2019-10-14 23:16:48,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-10-14 23:16:48,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2019-10-14 23:16:48,173 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2019-10-14 23:16:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:48,174 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2019-10-14 23:16:48,174 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-10-14 23:16:48,174 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2019-10-14 23:16:48,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-14 23:16:48,175 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:48,175 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:48,380 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:48,381 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:48,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:48,382 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 1 times [2019-10-14 23:16:48,382 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:48,382 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290639495] [2019-10-14 23:16:48,382 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:48,383 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:48,383 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:48,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:48,450 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:48,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290639495] [2019-10-14 23:16:48,451 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655790863] [2019-10-14 23:16:48,451 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:48,487 INFO L256 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-14 23:16:48,488 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:48,493 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:48,494 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:48,494 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2019-10-14 23:16:48,494 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760406540] [2019-10-14 23:16:48,495 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:16:48,495 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:48,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:16:48,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:16:48,495 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 5 states. [2019-10-14 23:16:48,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:48,538 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2019-10-14 23:16:48,539 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-14 23:16:48,539 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2019-10-14 23:16:48,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:48,540 INFO L225 Difference]: With dead ends: 30 [2019-10-14 23:16:48,540 INFO L226 Difference]: Without dead ends: 22 [2019-10-14 23:16:48,541 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:16:48,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-10-14 23:16:48,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2019-10-14 23:16:48,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-14 23:16:48,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-14 23:16:48,551 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 19 [2019-10-14 23:16:48,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:48,552 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-14 23:16:48,552 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:16:48,552 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-14 23:16:48,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-14 23:16:48,555 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:48,555 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:48,755 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:48,756 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:48,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:48,757 INFO L82 PathProgramCache]: Analyzing trace with hash -424886253, now seen corresponding path program 2 times [2019-10-14 23:16:48,758 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:48,758 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302970981] [2019-10-14 23:16:48,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:48,759 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:48,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:49,001 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:16:49,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302970981] [2019-10-14 23:16:49,002 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2016074691] [2019-10-14 23:16:49,002 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:49,040 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:16:49,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:49,042 WARN L254 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 23 conjunts are in the unsatisfiable core [2019-10-14 23:16:49,043 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:49,248 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:16:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:49,291 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:49,291 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13] total 21 [2019-10-14 23:16:49,291 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268108167] [2019-10-14 23:16:49,292 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-14 23:16:49,292 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:49,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-14 23:16:49,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=358, Unknown=0, NotChecked=0, Total=420 [2019-10-14 23:16:49,293 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 21 states. [2019-10-14 23:16:49,852 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:49,853 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2019-10-14 23:16:49,853 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2019-10-14 23:16:49,853 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 19 [2019-10-14 23:16:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:49,854 INFO L225 Difference]: With dead ends: 40 [2019-10-14 23:16:49,854 INFO L226 Difference]: Without dead ends: 28 [2019-10-14 23:16:49,855 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=163, Invalid=1027, Unknown=0, NotChecked=0, Total=1190 [2019-10-14 23:16:49,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2019-10-14 23:16:49,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2019-10-14 23:16:49,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-14 23:16:49,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2019-10-14 23:16:49,861 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 19 [2019-10-14 23:16:49,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:49,861 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2019-10-14 23:16:49,861 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-14 23:16:49,862 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2019-10-14 23:16:49,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-14 23:16:49,862 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:49,863 INFO L380 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:50,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:50,064 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:50,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:50,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1753373675, now seen corresponding path program 2 times [2019-10-14 23:16:50,065 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:50,065 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818675894] [2019-10-14 23:16:50,065 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:50,065 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:50,065 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:50,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:50,140 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:50,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818675894] [2019-10-14 23:16:50,140 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1474146122] [2019-10-14 23:16:50,140 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:50,180 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:16:50,180 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:50,181 INFO L256 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 6 conjunts are in the unsatisfiable core [2019-10-14 23:16:50,182 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:50,188 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:50,189 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:50,189 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 7 [2019-10-14 23:16:50,189 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335620897] [2019-10-14 23:16:50,190 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-14 23:16:50,190 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:50,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-14 23:16:50,190 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:16:50,191 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2019-10-14 23:16:50,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:50,220 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2019-10-14 23:16:50,221 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-14 23:16:50,221 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2019-10-14 23:16:50,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:50,222 INFO L225 Difference]: With dead ends: 39 [2019-10-14 23:16:50,222 INFO L226 Difference]: Without dead ends: 31 [2019-10-14 23:16:50,223 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2019-10-14 23:16:50,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-14 23:16:50,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2019-10-14 23:16:50,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-10-14 23:16:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2019-10-14 23:16:50,229 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2019-10-14 23:16:50,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:50,229 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2019-10-14 23:16:50,229 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-14 23:16:50,229 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2019-10-14 23:16:50,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-10-14 23:16:50,230 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:50,230 INFO L380 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:50,434 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:50,434 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:50,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:50,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1094958777, now seen corresponding path program 3 times [2019-10-14 23:16:50,436 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:50,436 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298264801] [2019-10-14 23:16:50,436 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:50,437 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:50,437 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:50,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:50,537 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:50,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298264801] [2019-10-14 23:16:50,538 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [170093240] [2019-10-14 23:16:50,539 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:50,578 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2019-10-14 23:16:50,578 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:50,579 INFO L256 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 7 conjunts are in the unsatisfiable core [2019-10-14 23:16:50,583 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:50,593 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:50,595 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:50,595 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2019-10-14 23:16:50,595 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006151650] [2019-10-14 23:16:50,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-14 23:16:50,597 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:50,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-14 23:16:50,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:16:50,597 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2019-10-14 23:16:50,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:50,661 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2019-10-14 23:16:50,663 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:16:50,663 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2019-10-14 23:16:50,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:50,664 INFO L225 Difference]: With dead ends: 42 [2019-10-14 23:16:50,664 INFO L226 Difference]: Without dead ends: 34 [2019-10-14 23:16:50,664 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2019-10-14 23:16:50,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-14 23:16:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-14 23:16:50,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-14 23:16:50,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-10-14 23:16:50,672 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2019-10-14 23:16:50,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:50,673 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-10-14 23:16:50,673 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-14 23:16:50,673 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-10-14 23:16:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:16:50,674 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:50,674 INFO L380 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:50,882 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:50,883 INFO L410 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:50,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:50,884 INFO L82 PathProgramCache]: Analyzing trace with hash 98169237, now seen corresponding path program 4 times [2019-10-14 23:16:50,885 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:50,885 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458862459] [2019-10-14 23:16:50,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:50,885 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:50,886 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:50,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:50,979 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:50,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458862459] [2019-10-14 23:16:50,980 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1436387165] [2019-10-14 23:16:50,980 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:51,009 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-10-14 23:16:51,010 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:51,010 INFO L256 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2019-10-14 23:16:51,012 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:51,020 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:51,021 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 9 [2019-10-14 23:16:51,021 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984668166] [2019-10-14 23:16:51,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:16:51,022 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:51,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:16:51,022 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:16:51,023 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 9 states. [2019-10-14 23:16:51,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:51,092 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2019-10-14 23:16:51,094 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-14 23:16:51,094 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2019-10-14 23:16:51,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:51,095 INFO L225 Difference]: With dead ends: 45 [2019-10-14 23:16:51,095 INFO L226 Difference]: Without dead ends: 37 [2019-10-14 23:16:51,096 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:16:51,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-14 23:16:51,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2019-10-14 23:16:51,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-14 23:16:51,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2019-10-14 23:16:51,108 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2019-10-14 23:16:51,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:51,109 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2019-10-14 23:16:51,109 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:16:51,109 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2019-10-14 23:16:51,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2019-10-14 23:16:51,114 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:51,114 INFO L380 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:51,320 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:51,320 INFO L410 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:51,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:51,321 INFO L82 PathProgramCache]: Analyzing trace with hash 144867641, now seen corresponding path program 5 times [2019-10-14 23:16:51,321 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:51,321 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114183571] [2019-10-14 23:16:51,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:51,321 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:51,322 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:51,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:51,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:51,402 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:51,402 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114183571] [2019-10-14 23:16:51,403 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800030636] [2019-10-14 23:16:51,403 INFO L92 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:51,440 INFO L249 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 9 check-sat command(s) [2019-10-14 23:16:51,441 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:51,441 INFO L256 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-14 23:16:51,443 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:51,462 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:51,469 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:51,469 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 10 [2019-10-14 23:16:51,469 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653359292] [2019-10-14 23:16:51,470 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:16:51,470 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:51,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:16:51,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:16:51,471 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 10 states. [2019-10-14 23:16:51,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:51,527 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2019-10-14 23:16:51,528 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:16:51,528 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2019-10-14 23:16:51,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:51,529 INFO L225 Difference]: With dead ends: 48 [2019-10-14 23:16:51,529 INFO L226 Difference]: Without dead ends: 40 [2019-10-14 23:16:51,530 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:16:51,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2019-10-14 23:16:51,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2019-10-14 23:16:51,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-14 23:16:51,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2019-10-14 23:16:51,536 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2019-10-14 23:16:51,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:51,536 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2019-10-14 23:16:51,537 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:16:51,537 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2019-10-14 23:16:51,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-14 23:16:51,538 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:51,538 INFO L380 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:51,738 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:51,739 INFO L410 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:51,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:51,739 INFO L82 PathProgramCache]: Analyzing trace with hash -232382699, now seen corresponding path program 6 times [2019-10-14 23:16:51,740 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:51,740 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323058595] [2019-10-14 23:16:51,740 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:51,741 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:51,741 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:51,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:16:51,814 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:51,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323058595] [2019-10-14 23:16:51,815 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [563142845] [2019-10-14 23:16:51,815 INFO L92 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:51,867 INFO L249 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 10 check-sat command(s) [2019-10-14 23:16:51,868 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:16:51,868 INFO L256 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-14 23:16:51,870 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:16:51,879 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:16:51,879 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:16:51,879 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 11 [2019-10-14 23:16:51,880 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1428826401] [2019-10-14 23:16:51,880 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-10-14 23:16:51,880 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:16:51,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-10-14 23:16:51,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:16:51,881 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2019-10-14 23:16:51,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:16:51,942 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2019-10-14 23:16:51,943 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-14 23:16:51,943 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2019-10-14 23:16:51,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:16:51,945 INFO L225 Difference]: With dead ends: 51 [2019-10-14 23:16:51,945 INFO L226 Difference]: Without dead ends: 43 [2019-10-14 23:16:51,945 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2019-10-14 23:16:51,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-10-14 23:16:51,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2019-10-14 23:16:51,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:16:51,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2019-10-14 23:16:51,951 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2019-10-14 23:16:51,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:16:51,951 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2019-10-14 23:16:51,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-10-14 23:16:51,952 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2019-10-14 23:16:51,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2019-10-14 23:16:51,953 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:16:51,953 INFO L380 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:16:52,156 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:16:52,157 INFO L410 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:16:52,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:16:52,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1032151993, now seen corresponding path program 7 times [2019-10-14 23:16:52,158 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:16:52,159 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [727461341] [2019-10-14 23:16:52,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:52,159 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:16:52,159 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:16:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:16:52,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-14 23:16:52,247 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-14 23:16:52,248 INFO L445 BasicCegarLoop]: Counterexample might be feasible [2019-10-14 23:16:52,297 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:16:52 BoogieIcfgContainer [2019-10-14 23:16:52,298 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-14 23:16:52,301 INFO L168 Benchmark]: Toolchain (without parser) took 6120.40 ms. Allocated memory was 138.4 MB in the beginning and 246.9 MB in the end (delta: 108.5 MB). Free memory was 103.3 MB in the beginning and 170.2 MB in the end (delta: -67.0 MB). Peak memory consumption was 41.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:52,302 INFO L168 Benchmark]: CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-14 23:16:52,303 INFO L168 Benchmark]: CACSL2BoogieTranslator took 264.39 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:52,304 INFO L168 Benchmark]: Boogie Preprocessor took 106.80 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.6 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:52,305 INFO L168 Benchmark]: RCFGBuilder took 243.36 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 169.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:52,306 INFO L168 Benchmark]: TraceAbstraction took 5501.13 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 169.2 MB in the beginning and 170.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2019-10-14 23:16:52,309 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.50 ms. Allocated memory is still 138.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 264.39 ms. Allocated memory is still 138.4 MB. Free memory was 103.0 MB in the beginning and 93.4 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.80 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 93.4 MB in the beginning and 180.6 MB in the end (delta: -87.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 243.36 ms. Allocated memory is still 201.9 MB. Free memory was 180.6 MB in the beginning and 169.2 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5501.13 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 169.2 MB in the beginning and 170.2 MB in the end (delta: -1.0 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=0, n=10] [L13] COND TRUE i<=n VAL [i=1, n=10, n=0] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=1, n=10, n=2] [L13] i++ VAL [i=2, n=2, n=10] [L13] COND TRUE i<=n VAL [i=2, n=10, n=2] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=2, n=10, n=4] [L13] i++ VAL [i=3, n=10, n=4] [L13] COND TRUE i<=n VAL [i=3, n=4, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=3, n=6, n=10] [L13] i++ VAL [i=4, n=6, n=10] [L13] COND TRUE i<=n VAL [i=4, n=10, n=6] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=4, n=10, n=8] [L13] i++ VAL [i=5, n=10, n=8] [L13] COND TRUE i<=n VAL [i=5, n=10, n=8] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=5, n=10, n=10] [L13] i++ VAL [i=6, n=10, n=10] [L13] COND TRUE i<=n VAL [i=6, n=10, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=6, n=12, n=10] [L13] i++ VAL [i=7, n=10, n=12] [L13] COND TRUE i<=n VAL [i=7, n=12, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=7, n=10, n=14] [L13] i++ VAL [i=8, n=10, n=14] [L13] COND TRUE i<=n VAL [i=8, n=10, n=14] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=8, n=16, n=10] [L13] i++ VAL [i=9, n=10, n=16] [L13] COND TRUE i<=n VAL [i=9, n=16, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=9, n=10, n=18] [L13] i++ VAL [i=10, n=10, n=18] [L13] COND TRUE i<=n VAL [i=10, n=18, n=10] [L14] COND FALSE !(i<10) VAL [i=10, n=18, n=10] [L13] i++ VAL [i=11, n=18, n=10] [L13] COND FALSE !(i<=n) VAL [i=11, n=10, n=18] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: UNSAFE, OverallTime: 5.4s, OverallIterations: 11, TraceHistogramMax: 10, AutomataDifference: 1.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 114 SDtfs, 61 SDslu, 439 SDs, 0 SdLazy, 543 SolverSat, 28 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 316 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 1.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=10, 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, 10 MinimizatonAttempts, 9 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 45 NumberOfCheckSat, 414 ConstructedInterpolants, 0 QuantifiedInterpolants, 29868 SizeOfPredicates, 12 NumberOfNonLiveVariables, 448 ConjunctsInSsa, 82 ConjunctsInUnsatCore, 18 InterpolantComputations, 2 PerfectInterpolantSequences, 145/780 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...