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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:35,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:35,833 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:35,849 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:35,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:35,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:35,852 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:35,854 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:35,855 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:35,856 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:35,857 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:35,858 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:35,859 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:35,860 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:35,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:35,862 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:35,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:35,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:35,866 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:35,869 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:35,871 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:35,873 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:35,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:35,879 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:35,881 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:06:35,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:06:35,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:06:35,886 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:06:35,886 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:06:35,890 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:06:35,890 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:06:35,891 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:06:35,891 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:06:35,893 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:06:35,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:06:35,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:06:35,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:06:35,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:06:35,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:35,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:35,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:35,901 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 [2019-10-15 01:06:35,922 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:35,923 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:35,925 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:35,925 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:35,925 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:35,926 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:35,926 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:35,926 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:35,926 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:35,926 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:35,928 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:35,928 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:35,928 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:35,929 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:35,929 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:35,929 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:35,929 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:35,929 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:35,930 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:35,930 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:35,930 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:35,930 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:35,930 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:35,931 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:35,931 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:35,931 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:35,931 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:35,931 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:35,932 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:06:36,223 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:36,242 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:36,246 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:36,249 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:36,250 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:36,250 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-10-15 01:06:36,327 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4fa22fa/ee11cc4e36334e99afcaa6ab81101544/FLAG15a20dc4a [2019-10-15 01:06:36,773 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:36,774 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-10-15 01:06:36,780 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4fa22fa/ee11cc4e36334e99afcaa6ab81101544/FLAG15a20dc4a [2019-10-15 01:06:37,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0c4fa22fa/ee11cc4e36334e99afcaa6ab81101544 [2019-10-15 01:06:37,144 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:37,145 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:37,146 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:37,147 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:37,149 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:37,150 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,152 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5845f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37, skipping insertion in model container [2019-10-15 01:06:37,152 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,159 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:37,179 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:37,345 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:37,350 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:37,365 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:37,377 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:37,377 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37 WrapperNode [2019-10-15 01:06:37,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:37,378 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:37,378 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:37,378 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:37,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,476 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,476 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,490 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,491 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (1/1) ... [2019-10-15 01:06:37,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:37,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:37,498 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:37,498 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:37,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (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 [2019-10-15 01:06:37,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:37,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:37,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:06:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:06:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:37,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:37,741 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:37,741 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:06:37,742 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:37 BoogieIcfgContainer [2019-10-15 01:06:37,743 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:37,744 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:37,744 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:37,748 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:37,748 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:37" (1/3) ... [2019-10-15 01:06:37,751 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0ec624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:37, skipping insertion in model container [2019-10-15 01:06:37,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:37" (2/3) ... [2019-10-15 01:06:37,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b0ec624 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:37, skipping insertion in model container [2019-10-15 01:06:37,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:37" (3/3) ... [2019-10-15 01:06:37,770 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2019-10-15 01:06:37,795 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:37,818 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:37,844 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:37,883 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:37,883 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:37,883 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:37,883 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:37,883 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:37,884 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:37,884 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:37,884 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2019-10-15 01:06:37,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:37,905 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:37,905 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:37,907 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:37,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:37,911 INFO L82 PathProgramCache]: Analyzing trace with hash -858950785, now seen corresponding path program 1 times [2019-10-15 01:06:37,919 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:37,919 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515318180] [2019-10-15 01:06:37,920 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:37,920 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:37,920 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:38,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:38,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:38,042 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515318180] [2019-10-15 01:06:38,042 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:38,043 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:38,043 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885584973] [2019-10-15 01:06:38,046 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:38,048 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:38,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:38,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:38,060 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 2 states. [2019-10-15 01:06:38,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:38,080 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2019-10-15 01:06:38,080 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:38,082 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:06:38,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:38,091 INFO L225 Difference]: With dead ends: 37 [2019-10-15 01:06:38,091 INFO L226 Difference]: Without dead ends: 16 [2019-10-15 01:06:38,095 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:38,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-10-15 01:06:38,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2019-10-15 01:06:38,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2019-10-15 01:06:38,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2019-10-15 01:06:38,135 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2019-10-15 01:06:38,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:38,135 INFO L462 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2019-10-15 01:06:38,135 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:38,136 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2019-10-15 01:06:38,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:38,136 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:38,136 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:38,137 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:38,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:38,137 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-10-15 01:06:38,138 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:38,138 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [246076531] [2019-10-15 01:06:38,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:38,138 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:38,139 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:38,148 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:38,149 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1610947396] [2019-10-15 01:06:38,149 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 [2019-10-15 01:06:38,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:38,188 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 01:06:38,194 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:38,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:38,293 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:38,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:38,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [246076531] [2019-10-15 01:06:38,356 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:38,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1610947396] [2019-10-15 01:06:38,357 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:38,357 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-15 01:06:38,357 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664192412] [2019-10-15 01:06:38,359 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:06:38,359 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:38,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:06:38,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:06:38,360 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 8 states. [2019-10-15 01:06:38,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:38,468 INFO L93 Difference]: Finished difference Result 27 states and 31 transitions. [2019-10-15 01:06:38,469 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:06:38,469 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-15 01:06:38,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:38,471 INFO L225 Difference]: With dead ends: 27 [2019-10-15 01:06:38,472 INFO L226 Difference]: Without dead ends: 23 [2019-10-15 01:06:38,473 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:06:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-15 01:06:38,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-10-15 01:06:38,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-10-15 01:06:38,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2019-10-15 01:06:38,483 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 10 [2019-10-15 01:06:38,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:38,483 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2019-10-15 01:06:38,483 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:06:38,483 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2019-10-15 01:06:38,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:06:38,484 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:38,484 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:38,688 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:38,689 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:38,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:38,690 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-10-15 01:06:38,690 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:38,691 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1776502633] [2019-10-15 01:06:38,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:38,692 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:38,692 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:38,701 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:38,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1481322198] [2019-10-15 01:06:38,702 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 [2019-10-15 01:06:38,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:38,743 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 01:06:38,745 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:38,813 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:38,813 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:38,888 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:38,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1776502633] [2019-10-15 01:06:38,889 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:38,889 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1481322198] [2019-10-15 01:06:38,890 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:38,890 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-10-15 01:06:38,890 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606993933] [2019-10-15 01:06:38,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 01:06:38,891 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:38,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 01:06:38,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:06:38,892 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2019-10-15 01:06:39,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:39,015 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2019-10-15 01:06:39,016 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:06:39,016 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-10-15 01:06:39,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:39,017 INFO L225 Difference]: With dead ends: 35 [2019-10-15 01:06:39,017 INFO L226 Difference]: Without dead ends: 29 [2019-10-15 01:06:39,018 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:06:39,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-10-15 01:06:39,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-10-15 01:06:39,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-10-15 01:06:39,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-10-15 01:06:39,029 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 16 [2019-10-15 01:06:39,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:39,029 INFO L462 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-10-15 01:06:39,029 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 01:06:39,029 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-10-15 01:06:39,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2019-10-15 01:06:39,032 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:39,032 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:39,237 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:39,237 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:39,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:39,239 INFO L82 PathProgramCache]: Analyzing trace with hash 1665617023, now seen corresponding path program 1 times [2019-10-15 01:06:39,239 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:39,240 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154495654] [2019-10-15 01:06:39,240 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:39,241 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:39,241 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:39,249 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:39,249 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [37617437] [2019-10-15 01:06:39,249 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-15 01:06:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:39,303 INFO L256 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-15 01:06:39,307 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:39,399 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:06:39,400 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:39,481 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:39,486 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:39,513 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2019-10-15 01:06:39,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154495654] [2019-10-15 01:06:39,514 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:39,514 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [37617437] [2019-10-15 01:06:39,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1742097974] [2019-10-15 01:06:39,521 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 33 [2019-10-15 01:06:39,565 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:39,565 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:39,782 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:39,786 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 26 root evaluator evaluations with a maximum evaluation depth of 8. Performed 26 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Never found a fixpoint. Largest state had 7 variables. [2019-10-15 01:06:39,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:39,791 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:39,792 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:06:39,792 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-10-15 01:06:39,792 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [194573112] [2019-10-15 01:06:39,793 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-15 01:06:39,794 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:39,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-15 01:06:39,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:06:39,796 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 13 states. [2019-10-15 01:06:39,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:39,889 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-10-15 01:06:39,889 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 01:06:39,889 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2019-10-15 01:06:39,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:39,890 INFO L225 Difference]: With dead ends: 29 [2019-10-15 01:06:39,890 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:39,891 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2019-10-15 01:06:39,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:39,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:39,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:39,892 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 32 [2019-10-15 01:06:39,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:39,892 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:39,892 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-15 01:06:39,893 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:39,893 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:40,096 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:40,101 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:40,201 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:06:40,201 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:40,201 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:40,201 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:06:40,201 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:40,202 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:40,202 INFO L439 ceAbstractionStarter]: At program point L35-2(lines 30 43) the Hoare annotation is: (and (not (= 0 main_~x2~0)) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0)) [2019-10-15 01:06:40,202 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (not (= 0 main_~x2~0)) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0)) [2019-10-15 01:06:40,202 INFO L443 ceAbstractionStarter]: For program point L31-1(lines 30 43) no Hoare annotation was computed. [2019-10-15 01:06:40,202 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 46) no Hoare annotation was computed. [2019-10-15 01:06:40,202 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 46) no Hoare annotation was computed. [2019-10-15 01:06:40,203 INFO L443 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2019-10-15 01:06:40,203 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 46) the Hoare annotation is: true [2019-10-15 01:06:40,203 INFO L439 ceAbstractionStarter]: At program point L30-2(lines 30 43) the Hoare annotation is: (let ((.cse0 (* main_~y1~0 main_~x2~0))) (and (= (+ main_~y2~0 .cse0) main_~x1~0) (= (+ main_~y2~0 main_~y3~0 .cse0) main_~x1~0))) [2019-10-15 01:06:40,203 INFO L443 ceAbstractionStarter]: For program point L35(lines 35 42) no Hoare annotation was computed. [2019-10-15 01:06:40,203 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2019-10-15 01:06:40,204 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-10-15 01:06:40,204 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-10-15 01:06:40,204 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2019-10-15 01:06:40,204 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2019-10-15 01:06:40,204 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2019-10-15 01:06:40,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:40 BoogieIcfgContainer [2019-10-15 01:06:40,216 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:40,220 INFO L168 Benchmark]: Toolchain (without parser) took 3071.94 ms. Allocated memory was 138.4 MB in the beginning and 233.8 MB in the end (delta: 95.4 MB). Free memory was 103.3 MB in the beginning and 142.4 MB in the end (delta: -39.1 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:40,221 INFO L168 Benchmark]: CDTParser took 0.22 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. [2019-10-15 01:06:40,228 INFO L168 Benchmark]: CACSL2BoogieTranslator took 231.32 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 93.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:40,230 INFO L168 Benchmark]: Boogie Preprocessor took 119.17 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 93.5 MB in the beginning and 181.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:40,230 INFO L168 Benchmark]: RCFGBuilder took 245.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 169.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:40,231 INFO L168 Benchmark]: TraceAbstraction took 2471.95 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 169.2 MB in the beginning and 142.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:40,236 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 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 231.32 ms. Allocated memory is still 138.4 MB. Free memory was 103.1 MB in the beginning and 93.5 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 119.17 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 93.5 MB in the beginning and 181.4 MB in the end (delta: -87.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 245.24 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 169.8 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2471.95 ms. Allocated memory was 202.4 MB in the beginning and 233.8 MB in the end (delta: 31.5 MB). Free memory was 169.2 MB in the beginning and 142.4 MB in the end (delta: 26.7 MB). Peak memory consumption was 58.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 13]: 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: 30]: Loop Invariant Derived loop invariant: !(0 == x2) && y2 + y3 + y1 * x2 == x1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Result: SAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 56 SDtfs, 37 SDslu, 166 SDs, 0 SdLazy, 137 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 120 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=3, 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, 4 MinimizatonAttempts, 5 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 47 HoareAnnotationTreeSize, 15 FomulaSimplifications, 300 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 68 NumberOfCodeBlocks, 68 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 119 ConstructedInterpolants, 0 QuantifiedInterpolants, 7711 SizeOfPredicates, 13 NumberOfNonLiveVariables, 168 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 58/60 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 correct! Received shutdown request...