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/prod4br.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:06:37,397 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:06:37,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:06:37,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:06:37,418 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:06:37,419 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:06:37,421 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:06:37,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:06:37,424 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:06:37,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:06:37,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:06:37,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:06:37,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:06:37,428 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:06:37,429 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:06:37,430 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:06:37,431 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:06:37,432 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:06:37,434 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:06:37,436 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:06:37,437 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:06:37,439 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:06:37,440 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:06:37,441 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:06:37,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:06:37,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:06:37,443 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:06:37,444 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:06:37,445 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:06:37,446 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:06:37,446 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:06:37,447 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:06:37,448 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:06:37,449 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:06:37,450 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:06:37,450 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:06:37,451 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:06:37,451 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:06:37,451 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:06:37,452 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:06:37,452 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:06:37,453 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 01:06:37,474 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:06:37,474 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:06:37,476 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:06:37,476 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:06:37,476 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:06:37,476 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:06:37,476 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:06:37,477 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:06:37,477 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:06:37,477 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:06:37,478 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:06:37,478 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:06:37,478 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:06:37,478 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:06:37,478 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:06:37,479 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:06:37,479 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:06:37,479 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:06:37,480 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:06:37,481 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:06:37,481 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:06:37,481 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:06:37,481 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:06:37,482 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:06:37,482 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:06:37,482 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:06:37,482 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:06:37,482 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:06:37,483 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 01:06:37,778 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:06:37,800 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:06:37,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:06:37,804 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:06:37,805 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:06:37,805 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/prod4br.c [2019-10-15 01:06:37,880 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5b7ceee/fe1d3d07b92141058753d6c3e247882a/FLAGe6becc645 [2019-10-15 01:06:38,371 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:06:38,373 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/prod4br.c [2019-10-15 01:06:38,381 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5b7ceee/fe1d3d07b92141058753d6c3e247882a/FLAGe6becc645 [2019-10-15 01:06:38,725 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8f5b7ceee/fe1d3d07b92141058753d6c3e247882a [2019-10-15 01:06:38,735 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:06:38,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:06:38,737 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:38,737 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:06:38,741 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:06:38,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:38,744 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@193d61cc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38, skipping insertion in model container [2019-10-15 01:06:38,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:38,751 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:06:38,773 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:06:38,956 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:38,960 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:06:38,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:06:38,993 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:06:38,993 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38 WrapperNode [2019-10-15 01:06:38,993 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:06:38,994 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:06:38,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:06:38,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:06:39,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:39,081 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:39,087 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:39,087 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:39,092 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:39,097 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:39,099 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (1/1) ... [2019-10-15 01:06:39,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:06:39,110 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:06:39,110 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:06:39,110 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:06:39,111 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (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 01:06:39,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:06:39,158 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:06:39,158 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-15 01:06:39,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:06:39,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:06:39,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:06:39,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-15 01:06:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-15 01:06:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:06:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:06:39,159 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:06:39,374 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:06:39,375 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-15 01:06:39,376 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:39 BoogieIcfgContainer [2019-10-15 01:06:39,376 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:06:39,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:06:39,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:06:39,380 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:06:39,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:06:38" (1/3) ... [2019-10-15 01:06:39,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599e2563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:39, skipping insertion in model container [2019-10-15 01:06:39,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:06:38" (2/3) ... [2019-10-15 01:06:39,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@599e2563 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:06:39, skipping insertion in model container [2019-10-15 01:06:39,382 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:06:39" (3/3) ... [2019-10-15 01:06:39,384 INFO L109 eAbstractionObserver]: Analyzing ICFG prod4br.c [2019-10-15 01:06:39,393 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:06:39,401 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:06:39,412 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:06:39,436 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:06:39,436 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:06:39,437 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:06:39,437 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:06:39,437 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:06:39,437 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:06:39,437 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:06:39,437 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:06:39,455 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-10-15 01:06:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:39,461 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:39,462 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:39,463 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:39,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:39,468 INFO L82 PathProgramCache]: Analyzing trace with hash 152624894, now seen corresponding path program 1 times [2019-10-15 01:06:39,475 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:39,475 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [194008491] [2019-10-15 01:06:39,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:39,476 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:39,476 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:39,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:39,572 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 01:06:39,573 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [194008491] [2019-10-15 01:06:39,574 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:39,574 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:06:39,574 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900125970] [2019-10-15 01:06:39,578 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:06:39,579 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:39,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:06:39,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:06:39,594 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 2 states. [2019-10-15 01:06:39,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:39,618 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2019-10-15 01:06:39,618 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:06:39,619 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-15 01:06:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:39,630 INFO L225 Difference]: With dead ends: 43 [2019-10-15 01:06:39,630 INFO L226 Difference]: Without dead ends: 19 [2019-10-15 01:06:39,634 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 01:06:39,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2019-10-15 01:06:39,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2019-10-15 01:06:39,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-10-15 01:06:39,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 24 transitions. [2019-10-15 01:06:39,675 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 24 transitions. Word has length 10 [2019-10-15 01:06:39,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:39,676 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 24 transitions. [2019-10-15 01:06:39,676 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:06:39,676 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 24 transitions. [2019-10-15 01:06:39,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-15 01:06:39,678 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:39,678 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:39,678 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:39,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:39,679 INFO L82 PathProgramCache]: Analyzing trace with hash 130400808, now seen corresponding path program 1 times [2019-10-15 01:06:39,679 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:39,679 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682874892] [2019-10-15 01:06:39,679 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:39,680 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:39,680 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:39,688 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:39,689 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2124991419] [2019-10-15 01:06:39,689 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 01:06:39,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:39,754 INFO L256 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 17 conjunts are in the unsatisfiable core [2019-10-15 01:06:39,760 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:39,889 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 01:06:39,890 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:39,954 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 01:06:39,955 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682874892] [2019-10-15 01:06:39,955 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:39,956 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2124991419] [2019-10-15 01:06:39,956 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:39,956 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-15 01:06:39,957 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356035150] [2019-10-15 01:06:39,958 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-15 01:06:39,959 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:39,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-15 01:06:39,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-15 01:06:39,960 INFO L87 Difference]: Start difference. First operand 19 states and 24 transitions. Second operand 8 states. [2019-10-15 01:06:40,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:40,153 INFO L93 Difference]: Finished difference Result 33 states and 43 transitions. [2019-10-15 01:06:40,156 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-15 01:06:40,156 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-15 01:06:40,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:40,158 INFO L225 Difference]: With dead ends: 33 [2019-10-15 01:06:40,159 INFO L226 Difference]: Without dead ends: 31 [2019-10-15 01:06:40,160 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 01:06:40,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-15 01:06:40,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 23. [2019-10-15 01:06:40,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2019-10-15 01:06:40,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 27 transitions. [2019-10-15 01:06:40,187 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 27 transitions. Word has length 10 [2019-10-15 01:06:40,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:40,187 INFO L462 AbstractCegarLoop]: Abstraction has 23 states and 27 transitions. [2019-10-15 01:06:40,188 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-15 01:06:40,188 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 27 transitions. [2019-10-15 01:06:40,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:06:40,191 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:40,191 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:40,394 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:40,395 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:40,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:40,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1836845457, now seen corresponding path program 1 times [2019-10-15 01:06:40,395 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:40,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [770631522] [2019-10-15 01:06:40,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:40,396 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:40,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:40,403 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:40,403 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1200492641] [2019-10-15 01:06:40,404 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 01:06:40,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:40,438 INFO L256 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-15 01:06:40,440 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:40,519 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,578 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:40,578 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:40,670 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,672 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,674 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,676 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,683 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,694 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,698 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:06:40,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [770631522] [2019-10-15 01:06:40,724 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:40,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1200492641] [2019-10-15 01:06:40,724 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1900743491] [2019-10-15 01:06:40,731 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 17 [2019-10-15 01:06:40,762 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:06:40,763 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:06:40,879 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-10-15 01:06:40,881 INFO L272 AbstractInterpreter]: Visited 15 different actions 20 times. Never merged. Never widened. Performed 27 root evaluator evaluations with a maximum evaluation depth of 8. Performed 27 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Never found a fixpoint. Largest state had 8 variables. [2019-10-15 01:06:40,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:40,886 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:40,887 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-15 01:06:40,887 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 13 [2019-10-15 01:06:40,887 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335676832] [2019-10-15 01:06:40,888 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2019-10-15 01:06:40,888 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:40,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2019-10-15 01:06:40,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2019-10-15 01:06:40,889 INFO L87 Difference]: Start difference. First operand 23 states and 27 transitions. Second operand 13 states. [2019-10-15 01:06:41,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:41,296 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2019-10-15 01:06:41,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:06:41,297 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 16 [2019-10-15 01:06:41,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:41,300 INFO L225 Difference]: With dead ends: 41 [2019-10-15 01:06:41,300 INFO L226 Difference]: Without dead ends: 37 [2019-10-15 01:06:41,301 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2019-10-15 01:06:41,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-15 01:06:41,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 25. [2019-10-15 01:06:41,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-10-15 01:06:41,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-10-15 01:06:41,309 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-10-15 01:06:41,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:41,309 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-10-15 01:06:41,309 INFO L463 AbstractCegarLoop]: Interpolant automaton has 13 states. [2019-10-15 01:06:41,310 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-10-15 01:06:41,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-15 01:06:41,310 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:06:41,311 INFO L380 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:06:41,521 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:41,522 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:06:41,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:06:41,522 INFO L82 PathProgramCache]: Analyzing trace with hash 560958013, now seen corresponding path program 1 times [2019-10-15 01:06:41,523 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:06:41,523 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1036872145] [2019-10-15 01:06:41,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:41,523 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:06:41,523 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:06:41,529 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-15 01:06:41,529 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [463681123] [2019-10-15 01:06:41,529 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 01:06:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:06:41,554 INFO L256 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 9 conjunts are in the unsatisfiable core [2019-10-15 01:06:41,556 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:06:41,602 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:06:41,602 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:06:41,631 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:06:41,640 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:06:41,640 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1036872145] [2019-10-15 01:06:41,641 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-15 01:06:41,641 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [463681123] [2019-10-15 01:06:41,641 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:06:41,641 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 9 [2019-10-15 01:06:41,641 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250375145] [2019-10-15 01:06:41,642 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:06:41,642 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:06:41,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:06:41,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:06:41,643 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 9 states. [2019-10-15 01:06:41,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:06:41,807 INFO L93 Difference]: Finished difference Result 33 states and 42 transitions. [2019-10-15 01:06:41,807 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-15 01:06:41,807 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2019-10-15 01:06:41,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:06:41,808 INFO L225 Difference]: With dead ends: 33 [2019-10-15 01:06:41,808 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:06:41,809 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2019-10-15 01:06:41,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:06:41,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:06:41,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:06:41,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:06:41,810 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2019-10-15 01:06:41,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:06:41,810 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:06:41,810 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:06:41,810 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:06:41,810 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:06:42,011 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:06:42,017 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:06:42,304 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-15 01:06:42,304 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:42,304 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:06:42,304 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:06:42,304 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:06:42,305 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:06:42,305 INFO L443 ceAbstractionStarter]: For program point L33(lines 33 47) no Hoare annotation was computed. [2019-10-15 01:06:42,305 INFO L439 ceAbstractionStarter]: At program point L27-2(lines 27 48) the Hoare annotation is: (and (= main_~q~0 (* main_~x~0 main_~y~0)) (= 0 (* main_~a~0 main_~b~0))) [2019-10-15 01:06:42,305 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 53) no Hoare annotation was computed. [2019-10-15 01:06:42,305 INFO L439 ceAbstractionStarter]: At program point L50(line 50) the Hoare annotation is: (and (= main_~q~0 (* main_~x~0 main_~y~0)) (= 0 (* main_~a~0 main_~b~0))) [2019-10-15 01:06:42,306 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 14 53) no Hoare annotation was computed. [2019-10-15 01:06:42,306 INFO L443 ceAbstractionStarter]: For program point L40(lines 40 47) no Hoare annotation was computed. [2019-10-15 01:06:42,306 INFO L439 ceAbstractionStarter]: At program point L40-2(lines 27 48) the Hoare annotation is: (= (+ main_~q~0 (* (* main_~a~0 main_~b~0) main_~p~0)) (* main_~x~0 main_~y~0)) [2019-10-15 01:06:42,306 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 53) the Hoare annotation is: true [2019-10-15 01:06:42,306 INFO L439 ceAbstractionStarter]: At program point L28(line 28) the Hoare annotation is: (= (+ main_~q~0 (* (* main_~a~0 main_~b~0) main_~p~0)) (* main_~x~0 main_~y~0)) [2019-10-15 01:06:42,306 INFO L443 ceAbstractionStarter]: For program point L28-1(lines 27 48) no Hoare annotation was computed. [2019-10-15 01:06:42,306 INFO L443 ceAbstractionStarter]: For program point L51(line 51) no Hoare annotation was computed. [2019-10-15 01:06:42,307 INFO L443 ceAbstractionStarter]: For program point L37(lines 37 47) no Hoare annotation was computed. [2019-10-15 01:06:42,307 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-10-15 01:06:42,307 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-10-15 01:06:42,307 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-10-15 01:06:42,307 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-10-15 01:06:42,308 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-10-15 01:06:42,308 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-10-15 01:06:42,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:06:42 BoogieIcfgContainer [2019-10-15 01:06:42,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:06:42,322 INFO L168 Benchmark]: Toolchain (without parser) took 3585.35 ms. Allocated memory was 138.9 MB in the beginning and 234.4 MB in the end (delta: 95.4 MB). Free memory was 103.0 MB in the beginning and 113.3 MB in the end (delta: -10.3 MB). Peak memory consumption was 85.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:42,323 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-15 01:06:42,324 INFO L168 Benchmark]: CACSL2BoogieTranslator took 256.57 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 92.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:42,325 INFO L168 Benchmark]: Boogie Preprocessor took 110.78 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 180.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:42,327 INFO L168 Benchmark]: RCFGBuilder took 266.53 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 167.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:42,328 INFO L168 Benchmark]: TraceAbstraction took 2942.55 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 113.3 MB in the end (delta: 53.8 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:06:42,332 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 256.57 ms. Allocated memory is still 138.9 MB. Free memory was 102.6 MB in the beginning and 92.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 110.78 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 180.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 266.53 ms. Allocated memory is still 201.9 MB. Free memory was 180.2 MB in the beginning and 167.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2942.55 ms. Allocated memory was 201.9 MB in the beginning and 234.4 MB in the end (delta: 32.5 MB). Free memory was 167.1 MB in the beginning and 113.3 MB in the end (delta: 53.8 MB). Peak memory consumption was 86.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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: 27]: Loop Invariant Derived loop invariant: q + a * b * p == x * y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Result: SAFE, OverallTime: 2.8s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, HoareTripleCheckerStatistics: 72 SDtfs, 52 SDslu, 186 SDs, 0 SdLazy, 269 SolverSat, 28 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 98 GetRequests, 67 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 20 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 17 PreInvPairs, 25 NumberOfFragments, 49 HoareAnnotationTreeSize, 17 FomulaSimplifications, 470 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 9 FomulaSimplificationsInter, 434 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 57 NumberOfCodeBlocks, 57 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 97 ConstructedInterpolants, 1 QuantifiedInterpolants, 4058 SizeOfPredicates, 17 NumberOfNonLiveVariables, 140 ConjunctsInSsa, 40 ConjunctsInUnsatCore, 7 InterpolantComputations, 5 PerfectInterpolantSequences, 18/20 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...