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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/nla-digbench/mannadiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 03:04:35,464 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 03:04:35,466 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 03:04:35,484 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 03:04:35,485 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 03:04:35,486 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 03:04:35,488 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 03:04:35,497 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 03:04:35,503 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 03:04:35,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 03:04:35,507 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 03:04:35,508 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 03:04:35,509 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 03:04:35,510 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 03:04:35,513 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 03:04:35,514 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 03:04:35,515 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 03:04:35,516 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 03:04:35,518 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 03:04:35,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 03:04:35,526 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 03:04:35,529 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 03:04:35,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 03:04:35,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 03:04:35,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 03:04:35,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 03:04:35,535 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 03:04:35,536 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 03:04:35,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 03:04:35,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 03:04:35,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 03:04:35,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 03:04:35,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 03:04:35,541 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 03:04:35,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 03:04:35,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 03:04:35,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 03:04:35,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 03:04:35,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 03:04:35,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 03:04:35,545 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 03:04:35,546 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 03:04:35,570 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 03:04:35,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 03:04:35,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 03:04:35,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 03:04:35,573 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 03:04:35,573 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 03:04:35,573 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 03:04:35,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 03:04:35,574 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 03:04:35,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 03:04:35,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 03:04:35,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 03:04:35,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 03:04:35,576 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 03:04:35,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 03:04:35,576 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 03:04:35,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 03:04:35,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 03:04:35,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 03:04:35,577 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 03:04:35,577 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 03:04:35,577 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 03:04:35,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 03:04:35,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 03:04:35,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 03:04:35,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 03:04:35,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 03:04:35,579 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 03:04:35,579 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-15 03:04:35,927 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 03:04:35,948 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 03:04:35,952 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 03:04:35,953 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 03:04:35,954 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 03:04:35,954 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-10-15 03:04:36,025 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391e5a3ca/fdd7ecf728144a56b9de2641558d9894/FLAG6fbf3e140 [2019-10-15 03:04:36,511 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 03:04:36,512 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/mannadiv.c [2019-10-15 03:04:36,519 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391e5a3ca/fdd7ecf728144a56b9de2641558d9894/FLAG6fbf3e140 [2019-10-15 03:04:36,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/391e5a3ca/fdd7ecf728144a56b9de2641558d9894 [2019-10-15 03:04:36,898 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 03:04:36,900 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 03:04:36,905 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:36,905 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 03:04:36,909 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 03:04:36,910 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:36" (1/1) ... [2019-10-15 03:04:36,913 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7698cf5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:36, skipping insertion in model container [2019-10-15 03:04:36,913 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 03:04:36" (1/1) ... [2019-10-15 03:04:36,922 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 03:04:36,943 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 03:04:37,144 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:37,149 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 03:04:37,167 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 03:04:37,179 INFO L192 MainTranslator]: Completed translation [2019-10-15 03:04:37,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37 WrapperNode [2019-10-15 03:04:37,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 03:04:37,181 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 03:04:37,181 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 03:04:37,181 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 03:04:37,285 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (1/1) ... [2019-10-15 03:04:37,286 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (1/1) ... [2019-10-15 03:04:37,291 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (1/1) ... [2019-10-15 03:04:37,291 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (1/1) ... [2019-10-15 03:04:37,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (1/1) ... [2019-10-15 03:04:37,311 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (1/1) ... [2019-10-15 03:04:37,312 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (1/1) ... [2019-10-15 03:04:37,316 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 03:04:37,316 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 03:04:37,317 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 03:04:37,317 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 03:04:37,320 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (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 03:04:37,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 03:04:37,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 03:04:37,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 03:04:37,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 03:04:37,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 03:04:37,379 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 03:04:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 03:04:37,380 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 03:04:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 03:04:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 03:04:37,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 03:04:37,594 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 03:04:37,594 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 03:04:37,595 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:37 BoogieIcfgContainer [2019-10-15 03:04:37,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 03:04:37,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 03:04:37,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 03:04:37,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 03:04:37,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 03:04:36" (1/3) ... [2019-10-15 03:04:37,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e594f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:37, skipping insertion in model container [2019-10-15 03:04:37,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 03:04:37" (2/3) ... [2019-10-15 03:04:37,602 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1e594f55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 03:04:37, skipping insertion in model container [2019-10-15 03:04:37,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 03:04:37" (3/3) ... [2019-10-15 03:04:37,604 INFO L109 eAbstractionObserver]: Analyzing ICFG mannadiv.c [2019-10-15 03:04:37,614 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 03:04:37,622 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 03:04:37,633 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 03:04:37,657 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 03:04:37,657 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 03:04:37,657 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 03:04:37,657 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 03:04:37,657 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 03:04:37,658 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 03:04:37,658 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 03:04:37,658 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 03:04:37,675 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-15 03:04:37,679 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:37,679 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:37,680 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:37,682 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:37,687 INFO L82 PathProgramCache]: Analyzing trace with hash -835862760, now seen corresponding path program 1 times [2019-10-15 03:04:37,695 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:37,696 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130083852] [2019-10-15 03:04:37,696 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:37,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:37,697 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:37,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:37,810 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 03:04:37,811 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130083852] [2019-10-15 03:04:37,812 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:37,812 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 03:04:37,813 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1151378991] [2019-10-15 03:04:37,817 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 03:04:37,817 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:37,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 03:04:37,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 03:04:37,833 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-15 03:04:37,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:37,859 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-10-15 03:04:37,859 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 03:04:37,861 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 03:04:37,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:37,871 INFO L225 Difference]: With dead ends: 33 [2019-10-15 03:04:37,871 INFO L226 Difference]: Without dead ends: 15 [2019-10-15 03:04:37,874 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 03:04:37,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-15 03:04:37,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-15 03:04:37,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-15 03:04:37,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-15 03:04:37,911 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-15 03:04:37,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:37,912 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-15 03:04:37,912 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 03:04:37,912 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-15 03:04:37,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 03:04:37,913 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:37,913 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:37,913 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:37,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:37,914 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-10-15 03:04:37,914 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:37,915 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903389297] [2019-10-15 03:04:37,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:37,915 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:37,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:37,925 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:37,925 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1137974470] [2019-10-15 03:04:37,926 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 03:04:37,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:37,991 INFO L256 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 13 conjunts are in the unsatisfiable core [2019-10-15 03:04:38,007 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:38,111 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 03:04:38,112 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:38,193 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 03:04:38,194 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903389297] [2019-10-15 03:04:38,194 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:38,195 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137974470] [2019-10-15 03:04:38,195 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:38,195 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-15 03:04:38,196 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349915506] [2019-10-15 03:04:38,197 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 03:04:38,198 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:38,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 03:04:38,198 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 03:04:38,199 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2019-10-15 03:04:38,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:38,330 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-15 03:04:38,331 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 03:04:38,332 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-15 03:04:38,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:38,333 INFO L225 Difference]: With dead ends: 25 [2019-10-15 03:04:38,334 INFO L226 Difference]: Without dead ends: 21 [2019-10-15 03:04:38,335 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 03:04:38,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-10-15 03:04:38,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 17. [2019-10-15 03:04:38,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-10-15 03:04:38,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 17 transitions. [2019-10-15 03:04:38,351 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 17 transitions. Word has length 10 [2019-10-15 03:04:38,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:38,352 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 17 transitions. [2019-10-15 03:04:38,352 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 03:04:38,352 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 17 transitions. [2019-10-15 03:04:38,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 03:04:38,353 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:38,353 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:38,556 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:38,557 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:38,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:38,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-10-15 03:04:38,558 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:38,559 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526265064] [2019-10-15 03:04:38,559 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:38,560 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:38,560 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:38,576 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:38,577 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [895724320] [2019-10-15 03:04:38,577 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 03:04:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:38,640 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 15 conjunts are in the unsatisfiable core [2019-10-15 03:04:38,644 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:38,716 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 03:04:38,717 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:38,797 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 03:04:38,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526265064] [2019-10-15 03:04:38,798 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:38,798 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895724320] [2019-10-15 03:04:38,798 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 03:04:38,799 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-10-15 03:04:38,799 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797906032] [2019-10-15 03:04:38,800 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-15 03:04:38,800 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:38,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-15 03:04:38,801 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-10-15 03:04:38,801 INFO L87 Difference]: Start difference. First operand 17 states and 17 transitions. Second operand 10 states. [2019-10-15 03:04:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:38,935 INFO L93 Difference]: Finished difference Result 33 states and 35 transitions. [2019-10-15 03:04:38,935 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 03:04:38,935 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-10-15 03:04:38,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:38,936 INFO L225 Difference]: With dead ends: 33 [2019-10-15 03:04:38,936 INFO L226 Difference]: Without dead ends: 27 [2019-10-15 03:04:38,938 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 03:04:38,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-10-15 03:04:38,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-10-15 03:04:38,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-10-15 03:04:38,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2019-10-15 03:04:38,951 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 16 [2019-10-15 03:04:38,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:38,952 INFO L462 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2019-10-15 03:04:38,952 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-15 03:04:38,952 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2019-10-15 03:04:38,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-15 03:04:38,954 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 03:04:38,954 INFO L380 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 03:04:39,159 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:39,165 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 03:04:39,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 03:04:39,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1925632421, now seen corresponding path program 1 times [2019-10-15 03:04:39,166 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-15 03:04:39,166 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612364668] [2019-10-15 03:04:39,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:39,167 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 03:04:39,167 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 03:04:39,176 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 03:04:39,177 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [64954500] [2019-10-15 03:04:39,178 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 03:04:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 03:04:39,245 INFO L256 TraceCheckSpWp]: Trace formula consists of 71 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-15 03:04:39,248 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 03:04:39,343 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:04:39,344 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 03:04:39,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:39,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 03:04:39,497 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 03:04:39,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612364668] [2019-10-15 03:04:39,498 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 03:04:39,498 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64954500] [2019-10-15 03:04:39,499 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [939437798] [2019-10-15 03:04:39,548 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-15 03:04:39,549 INFO L169 IcfgInterpreter]: Building call graph [2019-10-15 03:04:39,556 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-15 03:04:39,566 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-15 03:04:39,566 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-15 03:04:39,631 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-15 03:04:40,030 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-15 03:04:40,069 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-15 03:04:40,072 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-15 03:04:44,528 WARN L191 SmtUtils]: Spent 4.17 s on a formula simplification. DAG size of input: 23 DAG size of output: 21 [2019-10-15 03:04:44,529 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-15 03:04:44,530 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 9] total 21 [2019-10-15 03:04:44,530 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803838139] [2019-10-15 03:04:44,531 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2019-10-15 03:04:44,531 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-15 03:04:44,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2019-10-15 03:04:44,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2019-10-15 03:04:44,532 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand 21 states. [2019-10-15 03:04:44,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 03:04:44,770 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2019-10-15 03:04:44,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-15 03:04:44,771 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 30 [2019-10-15 03:04:44,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 03:04:44,772 INFO L225 Difference]: With dead ends: 27 [2019-10-15 03:04:44,772 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 03:04:44,773 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2019-10-15 03:04:44,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 03:04:44,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 03:04:44,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 03:04:44,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 03:04:44,774 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-10-15 03:04:44,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 03:04:44,775 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 03:04:44,775 INFO L463 AbstractCegarLoop]: Interpolant automaton has 21 states. [2019-10-15 03:04:44,775 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 03:04:44,775 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 03:04:44,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 03:04:44,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 03:04:45,194 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 03:04:45,194 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:04:45,194 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 03:04:45,194 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 03:04:45,195 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 03:04:45,195 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 03:04:45,195 INFO L439 ceAbstractionStarter]: At program point L35-2(lines 30 43) the Hoare annotation is: (and (<= main_~x2~0 2147483647) (<= 0 main_~x1~0) (<= main_~y3~0 2147483647) (<= 0 main_~y1~0) (not (= 0 main_~x2~0)) (<= 0 main_~y2~0) (<= main_~x1~0 2147483647) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0) (<= 0 (+ main_~x2~0 2147483648))) [2019-10-15 03:04:45,195 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (and (<= main_~x2~0 2147483647) (<= 0 main_~x1~0) (<= main_~y3~0 2147483647) (<= 0 main_~y1~0) (not (= 0 main_~x2~0)) (<= 0 main_~y2~0) (<= main_~x1~0 2147483647) (= (+ main_~y2~0 main_~y3~0 (* main_~y1~0 main_~x2~0)) main_~x1~0) (<= 0 (+ main_~x2~0 2147483648))) [2019-10-15 03:04:45,196 INFO L443 ceAbstractionStarter]: For program point L31-1(lines 30 43) no Hoare annotation was computed. [2019-10-15 03:04:45,196 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 46) no Hoare annotation was computed. [2019-10-15 03:04:45,196 INFO L443 ceAbstractionStarter]: For program point L44(line 44) no Hoare annotation was computed. [2019-10-15 03:04:45,196 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 46) the Hoare annotation is: true [2019-10-15 03:04:45,197 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 03:04:45,198 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 10 16) the Hoare annotation is: true [2019-10-15 03:04:45,198 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 13) no Hoare annotation was computed. [2019-10-15 03:04:45,198 INFO L443 ceAbstractionStarter]: For program point L12(lines 12 13) no Hoare annotation was computed. [2019-10-15 03:04:45,198 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 14) no Hoare annotation was computed. [2019-10-15 03:04:45,198 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 10 16) no Hoare annotation was computed. [2019-10-15 03:04:45,199 INFO L443 ceAbstractionStarter]: For program point L11-2(lines 10 16) no Hoare annotation was computed. [2019-10-15 03:04:45,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 03:04:45 BoogieIcfgContainer [2019-10-15 03:04:45,241 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 03:04:45,245 INFO L168 Benchmark]: Toolchain (without parser) took 8343.14 ms. Allocated memory was 145.2 MB in the beginning and 244.8 MB in the end (delta: 99.6 MB). Free memory was 101.8 MB in the beginning and 186.9 MB in the end (delta: -85.2 MB). Peak memory consumption was 14.5 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:45,246 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-15 03:04:45,247 INFO L168 Benchmark]: CACSL2BoogieTranslator took 275.30 ms. Allocated memory is still 145.2 MB. Free memory was 101.8 MB in the beginning and 92.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:45,249 INFO L168 Benchmark]: Boogie Preprocessor took 135.62 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.3 MB in the beginning and 181.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:45,250 INFO L168 Benchmark]: RCFGBuilder took 279.34 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 167.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:45,253 INFO L168 Benchmark]: TraceAbstraction took 7643.88 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 167.9 MB in the beginning and 186.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 22.3 MB. Max. memory is 7.1 GB. [2019-10-15 03:04:45,260 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 145.2 MB. Free memory is still 119.8 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 275.30 ms. Allocated memory is still 145.2 MB. Free memory was 101.8 MB in the beginning and 92.3 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.62 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 92.3 MB in the beginning and 181.2 MB in the end (delta: -88.9 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 279.34 ms. Allocated memory is still 203.4 MB. Free memory was 181.2 MB in the beginning and 167.9 MB in the end (delta: 13.3 MB). Peak memory consumption was 13.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7643.88 ms. Allocated memory was 203.4 MB in the beginning and 244.8 MB in the end (delta: 41.4 MB). Free memory was 167.9 MB in the beginning and 186.9 MB in the end (delta: -19.1 MB). Peak memory consumption was 22.3 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: (((((((x2 <= 2147483647 && 0 <= x1) && y3 <= 2147483647) && 0 <= y1) && !(0 == x2)) && 0 <= y2) && x1 <= 2147483647) && y2 + y3 + y1 * x2 == x1) && 0 <= x2 + 2147483648 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 7.5s, OverallIterations: 4, TraceHistogramMax: 4, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 53 SDtfs, 40 SDslu, 156 SDs, 0 SdLazy, 110 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 146 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 4 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 15 PreInvPairs, 24 NumberOfFragments, 93 HoareAnnotationTreeSize, 15 FomulaSimplifications, 412 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 33 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 66 NumberOfCodeBlocks, 66 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 115 ConstructedInterpolants, 0 QuantifiedInterpolants, 7095 SizeOfPredicates, 13 NumberOfNonLiveVariables, 154 ConjunctsInSsa, 42 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 56/58 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 524, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 40, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 19, TOOLS_POST_TIME[ms]: 18, TOOLS_POST_CALL_APPLICATIONS: 12, TOOLS_POST_CALL_TIME[ms]: 36, TOOLS_POST_RETURN_APPLICATIONS: 8, TOOLS_POST_RETURN_TIME[ms]: 13, TOOLS_QUANTIFIERELIM_APPLICATIONS: 39, TOOLS_QUANTIFIERELIM_TIME[ms]: 52, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 6, FLUID_QUERY_TIME[ms]: 5, FLUID_QUERIES: 42, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 31, DOMAIN_JOIN_TIME[ms]: 337, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 1, DOMAIN_WIDEN_TIME[ms]: 33, DOMAIN_ISSUBSETEQ_APPLICATIONS: 2, DOMAIN_ISSUBSETEQ_TIME[ms]: 4, DOMAIN_ISBOTTOM_APPLICATIONS: 7, DOMAIN_ISBOTTOM_TIME[ms]: 8, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 214, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 213, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 2, CALL_SUMMARIZER_APPLICATIONS: 8, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 18, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 17, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 14, DAG_COMPRESSION_PROCESSED_NODES: 101, DAG_COMPRESSION_RETAINED_NODES: 57, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...