/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -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/lcm1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fb55353 [2019-11-07 00:36:37,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-07 00:36:37,607 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-07 00:36:37,624 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2019-11-07 00:36:37,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-07 00:36:37,648 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-07 00:36:37,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-07 00:36:37,651 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-07 00:36:37,653 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-07 00:36:37,653 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-07 00:36:37,655 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-07 00:36:37,659 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-07 00:36:37,663 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-07 00:36:37,665 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-07 00:36:37,668 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-07 00:36:37,668 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-07 00:36:37,670 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-07 00:36:37,680 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-07 00:36:37,681 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-07 00:36:37,681 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-07 00:36:37,682 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 [2019-11-07 00:36:37,716 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-07 00:36:37,716 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-07 00:36:37,717 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-07 00:36:37,717 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-07 00:36:37,718 INFO L138 SettingsManager]: * Use SBE=true [2019-11-07 00:36:37,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-07 00:36:37,720 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-07 00:36:37,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-07 00:36:37,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-07 00:36:37,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-07 00:36:37,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-07 00:36:37,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-07 00:36:37,722 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-07 00:36:37,722 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-07 00:36:37,722 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-07 00:36:37,722 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-07 00:36:37,722 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-07 00:36:37,723 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-07 00:36:37,723 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-07 00:36:37,723 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-07 00:36:37,723 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-07 00:36:37,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-07 00:36:37,724 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-07 00:36:37,724 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-07 00:36:37,724 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-07 00:36:37,724 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-07 00:36:37,724 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-07 00:36:37,725 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-07 00:36:37,725 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 [2019-11-07 00:36:37,992 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-07 00:36:38,007 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-07 00:36:38,011 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-07 00:36:38,013 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-07 00:36:38,013 INFO L275 PluginConnector]: CDTParser initialized [2019-11-07 00:36:38,014 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm1.c [2019-11-07 00:36:38,086 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/979b007d9/3a13d36334eb4729843c00c435599290/FLAGbe4ead256 [2019-11-07 00:36:38,543 INFO L306 CDTParser]: Found 1 translation units. [2019-11-07 00:36:38,543 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm1.c [2019-11-07 00:36:38,549 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/979b007d9/3a13d36334eb4729843c00c435599290/FLAGbe4ead256 [2019-11-07 00:36:38,899 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/979b007d9/3a13d36334eb4729843c00c435599290 [2019-11-07 00:36:38,909 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-07 00:36:38,911 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-11-07 00:36:38,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:38,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-07 00:36:38,916 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-07 00:36:38,918 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,921 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57b13ff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:38, skipping insertion in model container [2019-11-07 00:36:38,921 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 12:36:38" (1/1) ... [2019-11-07 00:36:38,929 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-07 00:36:38,948 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-07 00:36:39,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:39,128 INFO L188 MainTranslator]: Completed pre-run [2019-11-07 00:36:39,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-07 00:36:39,164 INFO L192 MainTranslator]: Completed translation [2019-11-07 00:36:39,165 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39 WrapperNode [2019-11-07 00:36:39,165 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-07 00:36:39,166 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-07 00:36:39,166 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-07 00:36:39,166 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-07 00:36:39,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (1/1) ... [2019-11-07 00:36:39,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (1/1) ... [2019-11-07 00:36:39,259 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (1/1) ... [2019-11-07 00:36:39,260 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (1/1) ... [2019-11-07 00:36:39,266 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (1/1) ... [2019-11-07 00:36:39,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (1/1) ... [2019-11-07 00:36:39,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (1/1) ... [2019-11-07 00:36:39,280 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-07 00:36:39,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-07 00:36:39,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-07 00:36:39,281 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-07 00:36:39,288 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (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 [2019-11-07 00:36:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-07 00:36:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-07 00:36:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-11-07 00:36:39,334 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-07 00:36:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-07 00:36:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-07 00:36:39,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-11-07 00:36:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-11-07 00:36:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-07 00:36:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-07 00:36:39,335 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-07 00:36:39,541 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-07 00:36:39,541 INFO L284 CfgBuilder]: Removed 3 assume(true) statements. [2019-11-07 00:36:39,542 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:39 BoogieIcfgContainer [2019-11-07 00:36:39,543 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-07 00:36:39,544 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-07 00:36:39,544 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-07 00:36:39,547 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-07 00:36:39,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 12:36:38" (1/3) ... [2019-11-07 00:36:39,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1124f152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:39, skipping insertion in model container [2019-11-07 00:36:39,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 12:36:39" (2/3) ... [2019-11-07 00:36:39,548 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1124f152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 12:36:39, skipping insertion in model container [2019-11-07 00:36:39,548 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 12:36:39" (3/3) ... [2019-11-07 00:36:39,550 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm1.c [2019-11-07 00:36:39,560 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-07 00:36:39,567 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-07 00:36:39,579 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-07 00:36:39,606 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-07 00:36:39,606 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-07 00:36:39,606 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-07 00:36:39,606 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-07 00:36:39,607 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-07 00:36:39,607 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-07 00:36:39,608 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-07 00:36:39,608 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-07 00:36:39,634 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states. [2019-11-07 00:36:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:39,641 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:39,642 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:39,644 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:39,651 INFO L82 PathProgramCache]: Analyzing trace with hash -831554694, now seen corresponding path program 1 times [2019-11-07 00:36:39,663 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:39,663 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467014517] [2019-11-07 00:36:39,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:39,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:39,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:39,789 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467014517] [2019-11-07 00:36:39,790 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:39,790 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-07 00:36:39,791 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777059862] [2019-11-07 00:36:39,795 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-11-07 00:36:39,797 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:39,810 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-11-07 00:36:39,810 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-11-07 00:36:39,812 INFO L87 Difference]: Start difference. First operand 27 states. Second operand 2 states. [2019-11-07 00:36:39,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:39,835 INFO L93 Difference]: Finished difference Result 49 states and 80 transitions. [2019-11-07 00:36:39,835 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-11-07 00:36:39,836 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-11-07 00:36:39,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:39,848 INFO L225 Difference]: With dead ends: 49 [2019-11-07 00:36:39,849 INFO L226 Difference]: Without dead ends: 22 [2019-11-07 00:36:39,852 INFO L630 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 [2019-11-07 00:36:39,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-07 00:36:39,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-07 00:36:39,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-07 00:36:39,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 28 transitions. [2019-11-07 00:36:39,893 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 28 transitions. Word has length 10 [2019-11-07 00:36:39,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:39,894 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 28 transitions. [2019-11-07 00:36:39,894 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-11-07 00:36:39,894 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 28 transitions. [2019-11-07 00:36:39,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-07 00:36:39,895 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:39,895 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:39,895 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:39,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:39,896 INFO L82 PathProgramCache]: Analyzing trace with hash -871444843, now seen corresponding path program 1 times [2019-11-07 00:36:39,896 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:39,896 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580737524] [2019-11-07 00:36:39,897 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:39,906 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:39,907 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1043855108] [2019-11-07 00:36:39,907 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 [2019-11-07 00:36:39,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:39,967 INFO L256 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-07 00:36:39,972 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:40,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:40,056 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:40,130 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:40,130 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [580737524] [2019-11-07 00:36:40,130 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:40,131 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043855108] [2019-11-07 00:36:40,131 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:40,132 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-11-07 00:36:40,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847055011] [2019-11-07 00:36:40,134 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:36:40,134 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:40,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:36:40,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:36:40,135 INFO L87 Difference]: Start difference. First operand 22 states and 28 transitions. Second operand 8 states. [2019-11-07 00:36:40,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:40,328 INFO L93 Difference]: Finished difference Result 39 states and 51 transitions. [2019-11-07 00:36:40,329 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:36:40,329 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-11-07 00:36:40,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:40,332 INFO L225 Difference]: With dead ends: 39 [2019-11-07 00:36:40,332 INFO L226 Difference]: Without dead ends: 37 [2019-11-07 00:36:40,334 INFO L630 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 [2019-11-07 00:36:40,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-11-07 00:36:40,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-11-07 00:36:40,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-11-07 00:36:40,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 46 transitions. [2019-11-07 00:36:40,349 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 46 transitions. Word has length 10 [2019-11-07 00:36:40,349 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:40,350 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 46 transitions. [2019-11-07 00:36:40,350 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:36:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 46 transitions. [2019-11-07 00:36:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-07 00:36:40,352 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:40,352 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:40,555 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:40,556 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:40,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:40,556 INFO L82 PathProgramCache]: Analyzing trace with hash -1387131099, now seen corresponding path program 1 times [2019-11-07 00:36:40,557 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:40,558 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130720637] [2019-11-07 00:36:40,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:40,566 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:40,566 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [195541878] [2019-11-07 00:36:40,567 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) [2019-11-07 00:36:40,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:40,599 INFO L256 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 17 conjunts are in the unsatisfiable core [2019-11-07 00:36:40,600 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:40,672 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:40,672 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:40,843 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-07 00:36:40,844 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130720637] [2019-11-07 00:36:40,844 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:40,844 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [195541878] [2019-11-07 00:36:40,845 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:40,846 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2019-11-07 00:36:40,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694659496] [2019-11-07 00:36:40,847 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-11-07 00:36:40,848 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:40,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-11-07 00:36:40,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:36:40,849 INFO L87 Difference]: Start difference. First operand 35 states and 46 transitions. Second operand 10 states. [2019-11-07 00:36:41,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:41,119 INFO L93 Difference]: Finished difference Result 73 states and 100 transitions. [2019-11-07 00:36:41,119 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-11-07 00:36:41,120 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2019-11-07 00:36:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:41,122 INFO L225 Difference]: With dead ends: 73 [2019-11-07 00:36:41,122 INFO L226 Difference]: Without dead ends: 69 [2019-11-07 00:36:41,123 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2019-11-07 00:36:41,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2019-11-07 00:36:41,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 68. [2019-11-07 00:36:41,137 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2019-11-07 00:36:41,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 93 transitions. [2019-11-07 00:36:41,140 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 93 transitions. Word has length 16 [2019-11-07 00:36:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:41,140 INFO L462 AbstractCegarLoop]: Abstraction has 68 states and 93 transitions. [2019-11-07 00:36:41,140 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-11-07 00:36:41,141 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 93 transitions. [2019-11-07 00:36:41,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2019-11-07 00:36:41,141 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:41,142 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:41,354 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:41,354 INFO L410 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:41,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:41,355 INFO L82 PathProgramCache]: Analyzing trace with hash -1615934296, now seen corresponding path program 1 times [2019-11-07 00:36:41,355 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:41,355 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525348803] [2019-11-07 00:36:41,355 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:41,363 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:41,363 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [682289147] [2019-11-07 00:36:41,363 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 [2019-11-07 00:36:41,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:41,407 INFO L256 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 21 conjunts are in the unsatisfiable core [2019-11-07 00:36:41,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:41,468 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:41,500 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-07 00:36:41,501 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:41,583 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-11-07 00:36:41,583 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525348803] [2019-11-07 00:36:41,584 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:41,584 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [682289147] [2019-11-07 00:36:41,584 INFO L218 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-07 00:36:41,584 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-11-07 00:36:41,585 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412949207] [2019-11-07 00:36:41,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-07 00:36:41,586 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:41,586 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-07 00:36:41,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:36:41,587 INFO L87 Difference]: Start difference. First operand 68 states and 93 transitions. Second operand 5 states. [2019-11-07 00:36:41,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:41,664 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2019-11-07 00:36:41,665 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-07 00:36:41,666 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2019-11-07 00:36:41,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:41,671 INFO L225 Difference]: With dead ends: 74 [2019-11-07 00:36:41,671 INFO L226 Difference]: Without dead ends: 72 [2019-11-07 00:36:41,673 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2019-11-07 00:36:41,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-11-07 00:36:41,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2019-11-07 00:36:41,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-07 00:36:41,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 96 transitions. [2019-11-07 00:36:41,706 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 96 transitions. Word has length 24 [2019-11-07 00:36:41,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:41,706 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 96 transitions. [2019-11-07 00:36:41,706 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-07 00:36:41,707 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 96 transitions. [2019-11-07 00:36:41,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-11-07 00:36:41,709 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:41,709 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:41,921 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:41,922 INFO L410 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:41,922 INFO L82 PathProgramCache]: Analyzing trace with hash -1558903376, now seen corresponding path program 1 times [2019-11-07 00:36:41,923 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:41,923 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1586587274] [2019-11-07 00:36:41,924 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:41,933 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:41,933 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1556217018] [2019-11-07 00:36:41,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:42,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:42,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-07 00:36:42,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:42,035 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:42,061 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 00:36:42,061 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:42,122 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2019-11-07 00:36:42,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1586587274] [2019-11-07 00:36:42,123 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:42,123 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1556217018] [2019-11-07 00:36:42,123 INFO L218 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-07 00:36:42,123 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2019-11-07 00:36:42,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269326226] [2019-11-07 00:36:42,124 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-07 00:36:42,125 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:42,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-07 00:36:42,125 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-07 00:36:42,125 INFO L87 Difference]: Start difference. First operand 72 states and 96 transitions. Second operand 8 states. [2019-11-07 00:36:42,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:42,251 INFO L93 Difference]: Finished difference Result 170 states and 234 transitions. [2019-11-07 00:36:42,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:36:42,253 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 49 [2019-11-07 00:36:42,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:42,255 INFO L225 Difference]: With dead ends: 170 [2019-11-07 00:36:42,255 INFO L226 Difference]: Without dead ends: 73 [2019-11-07 00:36:42,257 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 89 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-11-07 00:36:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2019-11-07 00:36:42,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2019-11-07 00:36:42,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2019-11-07 00:36:42,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 95 transitions. [2019-11-07 00:36:42,271 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 95 transitions. Word has length 49 [2019-11-07 00:36:42,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:42,272 INFO L462 AbstractCegarLoop]: Abstraction has 72 states and 95 transitions. [2019-11-07 00:36:42,272 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-07 00:36:42,272 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 95 transitions. [2019-11-07 00:36:42,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 00:36:42,275 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:42,275 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:42,479 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:42,479 INFO L410 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:42,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:42,480 INFO L82 PathProgramCache]: Analyzing trace with hash -250356680, now seen corresponding path program 1 times [2019-11-07 00:36:42,481 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:42,481 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [425440177] [2019-11-07 00:36:42,481 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:42,490 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:42,491 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1495960406] [2019-11-07 00:36:42,491 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:42,534 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-07 00:36:42,541 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:42,665 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:42,723 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 00:36:42,723 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:42,951 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 12 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2019-11-07 00:36:42,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [425440177] [2019-11-07 00:36:42,952 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:42,952 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1495960406] [2019-11-07 00:36:42,953 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [1844077826] [2019-11-07 00:36:42,959 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 52 [2019-11-07 00:36:42,999 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:36:42,999 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:36:43,117 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:36:43,118 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 8. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Never found a fixpoint. Largest state had 8 variables. [2019-11-07 00:36:43,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:43,123 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:43,124 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:36:43,124 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2019-11-07 00:36:43,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1273550034] [2019-11-07 00:36:43,125 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2019-11-07 00:36:43,125 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:43,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2019-11-07 00:36:43,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2019-11-07 00:36:43,126 INFO L87 Difference]: Start difference. First operand 72 states and 95 transitions. Second operand 16 states. [2019-11-07 00:36:44,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:44,758 INFO L93 Difference]: Finished difference Result 148 states and 207 transitions. [2019-11-07 00:36:44,760 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-11-07 00:36:44,760 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 51 [2019-11-07 00:36:44,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:44,763 INFO L225 Difference]: With dead ends: 148 [2019-11-07 00:36:44,763 INFO L226 Difference]: Without dead ends: 142 [2019-11-07 00:36:44,764 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=460, Unknown=0, NotChecked=0, Total=600 [2019-11-07 00:36:44,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2019-11-07 00:36:44,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 99. [2019-11-07 00:36:44,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2019-11-07 00:36:44,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 135 transitions. [2019-11-07 00:36:44,784 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 135 transitions. Word has length 51 [2019-11-07 00:36:44,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:44,785 INFO L462 AbstractCegarLoop]: Abstraction has 99 states and 135 transitions. [2019-11-07 00:36:44,785 INFO L463 AbstractCegarLoop]: Interpolant automaton has 16 states. [2019-11-07 00:36:44,785 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 135 transitions. [2019-11-07 00:36:44,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2019-11-07 00:36:44,788 INFO L402 BasicCegarLoop]: Found error trace [2019-11-07 00:36:44,788 INFO L410 BasicCegarLoop]: trace histogram [7, 6, 6, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-07 00:36:44,991 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:44,992 INFO L410 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-07 00:36:44,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:44,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1401665144, now seen corresponding path program 1 times [2019-11-07 00:36:44,993 INFO L161 FreeRefinementEngine]: Executing refinement strategy TAIPAN [2019-11-07 00:36:44,993 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115965823] [2019-11-07 00:36:44,993 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-07 00:36:45,001 ERROR L268 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-07 00:36:45,001 INFO L337 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1858938046] [2019-11-07 00:36:45,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:45,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-07 00:36:45,047 INFO L256 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 14 conjunts are in the unsatisfiable core [2019-11-07 00:36:45,050 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-11-07 00:36:45,166 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:45,193 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 00:36:45,194 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-11-07 00:36:45,292 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:45,302 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-07 00:36:45,345 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2019-11-07 00:36:45,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115965823] [2019-11-07 00:36:45,346 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:45,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1858938046] [2019-11-07 00:36:45,346 INFO L337 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [2043717384] [2019-11-07 00:36:45,346 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 52 [2019-11-07 00:36:45,349 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-11-07 00:36:45,349 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-11-07 00:36:45,395 INFO L263 AbstractInterpreter]: Some error location(s) were reachable [2019-11-07 00:36:45,395 INFO L272 AbstractInterpreter]: Visited 13 different actions 13 times. Never merged. Never widened. Performed 30 root evaluator evaluations with a maximum evaluation depth of 8. Performed 30 inverse root evaluator evaluations with a maximum inverse evaluation depth of 8. Never found a fixpoint. Largest state had 8 variables. [2019-11-07 00:36:45,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-07 00:36:45,396 INFO L332 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-07 00:36:45,396 INFO L218 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-07 00:36:45,396 INFO L231 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 15 [2019-11-07 00:36:45,396 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934104073] [2019-11-07 00:36:45,397 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-11-07 00:36:45,397 INFO L141 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-11-07 00:36:45,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-11-07 00:36:45,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=165, Unknown=0, NotChecked=0, Total=210 [2019-11-07 00:36:45,398 INFO L87 Difference]: Start difference. First operand 99 states and 135 transitions. Second operand 15 states. [2019-11-07 00:36:45,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-07 00:36:45,771 INFO L93 Difference]: Finished difference Result 146 states and 203 transitions. [2019-11-07 00:36:45,771 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-07 00:36:45,771 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2019-11-07 00:36:45,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-07 00:36:45,772 INFO L225 Difference]: With dead ends: 146 [2019-11-07 00:36:45,772 INFO L226 Difference]: Without dead ends: 0 [2019-11-07 00:36:45,774 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 88 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=210, Unknown=0, NotChecked=0, Total=272 [2019-11-07 00:36:45,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-07 00:36:45,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-07 00:36:45,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-07 00:36:45,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-07 00:36:45,775 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 51 [2019-11-07 00:36:45,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-07 00:36:45,775 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-07 00:36:45,776 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-11-07 00:36:45,776 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-07 00:36:45,776 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-07 00:36:45,979 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-07 00:36:45,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-07 00:36:46,450 WARN L191 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2019-11-07 00:36:46,598 WARN L191 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 31 DAG size of output: 26 [2019-11-07 00:36:46,601 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-11-07 00:36:46,601 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:46,602 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-07 00:36:46,602 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-11-07 00:36:46,602 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-11-07 00:36:46,602 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-07 00:36:46,602 INFO L439 ceAbstractionStarter]: At program point L35-2(lines 35 41) the Hoare annotation is: (and (<= 1 main_~a~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) [2019-11-07 00:36:46,603 INFO L439 ceAbstractionStarter]: At program point L31(line 31) the Hoare annotation is: (let ((.cse3 (* main_~a~0 main_~b~0))) (let ((.cse1 (<= main_~y~0 main_~x~0)) (.cse0 (<= 1 main_~a~0)) (.cse2 (= .cse3 (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0))))) (or (and .cse0 .cse1 .cse2) (and .cse1 (<= main_~x~0 main_~y~0) (= (+ (* main_~v~0 main_~y~0) (* main_~u~0 main_~y~0)) .cse3)) (and .cse0 (= main_~b~0 main_~y~0) (= main_~b~0 main_~u~0) .cse2 (= main_~a~0 main_~x~0))))) [2019-11-07 00:36:46,603 INFO L443 ceAbstractionStarter]: For program point L31-1(lines 30 50) no Hoare annotation was computed. [2019-11-07 00:36:46,603 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 17 58) no Hoare annotation was computed. [2019-11-07 00:36:46,603 INFO L439 ceAbstractionStarter]: At program point L52(line 52) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0))) (<= main_~x~0 main_~y~0)) [2019-11-07 00:36:46,604 INFO L439 ceAbstractionStarter]: At program point L44(line 44) the Hoare annotation is: (let ((.cse0 (* main_~a~0 main_~b~0))) (or (and (<= 1 main_~a~0) (= .cse0 (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) (and (<= main_~y~0 main_~x~0) (<= main_~x~0 main_~y~0) (= (+ (* main_~v~0 main_~y~0) (* main_~u~0 main_~y~0)) .cse0)))) [2019-11-07 00:36:46,604 INFO L443 ceAbstractionStarter]: For program point L44-1(lines 43 49) no Hoare annotation was computed. [2019-11-07 00:36:46,604 INFO L439 ceAbstractionStarter]: At program point L36(line 36) the Hoare annotation is: (and (<= 1 main_~a~0) (= (* main_~a~0 main_~b~0) (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0)))) [2019-11-07 00:36:46,604 INFO L443 ceAbstractionStarter]: For program point L36-1(lines 35 41) no Hoare annotation was computed. [2019-11-07 00:36:46,604 INFO L443 ceAbstractionStarter]: For program point L53(line 53) no Hoare annotation was computed. [2019-11-07 00:36:46,604 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 17 58) no Hoare annotation was computed. [2019-11-07 00:36:46,604 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 17 58) the Hoare annotation is: true [2019-11-07 00:36:46,604 INFO L439 ceAbstractionStarter]: At program point L30-2(lines 30 50) the Hoare annotation is: (and (<= main_~y~0 main_~x~0) (= (+ (* main_~v~0 main_~y~0) (* main_~u~0 main_~y~0)) (* main_~a~0 main_~b~0)) (<= main_~x~0 main_~y~0)) [2019-11-07 00:36:46,605 INFO L443 ceAbstractionStarter]: For program point L43-1(lines 30 50) no Hoare annotation was computed. [2019-11-07 00:36:46,605 INFO L439 ceAbstractionStarter]: At program point L43-2(lines 30 50) the Hoare annotation is: (let ((.cse3 (* main_~a~0 main_~b~0))) (let ((.cse1 (<= main_~y~0 main_~x~0)) (.cse0 (<= 1 main_~a~0)) (.cse2 (= .cse3 (+ (* main_~y~0 main_~v~0) (* main_~x~0 main_~u~0))))) (or (and .cse0 .cse1 .cse2) (and .cse1 (<= main_~x~0 main_~y~0) (= (+ (* main_~v~0 main_~y~0) (* main_~u~0 main_~y~0)) .cse3)) (and .cse0 (= main_~b~0 main_~y~0) (= main_~b~0 main_~u~0) .cse2 (= main_~a~0 main_~x~0))))) [2019-11-07 00:36:46,605 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2019-11-07 00:36:46,605 INFO L443 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-11-07 00:36:46,605 INFO L443 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-11-07 00:36:46,605 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2019-11-07 00:36:46,605 INFO L443 ceAbstractionStarter]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2019-11-07 00:36:46,606 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-07 00:36:46,619 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 12:36:46 BoogieIcfgContainer [2019-11-07 00:36:46,620 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-07 00:36:46,621 INFO L168 Benchmark]: Toolchain (without parser) took 7710.35 ms. Allocated memory was 137.9 MB in the beginning and 274.7 MB in the end (delta: 136.8 MB). Free memory was 102.8 MB in the beginning and 231.9 MB in the end (delta: -129.1 MB). Peak memory consumption was 120.8 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:46,622 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-07 00:36:46,623 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.08 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:46,624 INFO L168 Benchmark]: Boogie Preprocessor took 114.70 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 180.0 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:46,625 INFO L168 Benchmark]: RCFGBuilder took 261.82 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:46,626 INFO L168 Benchmark]: TraceAbstraction took 7076.07 ms. Allocated memory was 201.3 MB in the beginning and 274.7 MB in the end (delta: 73.4 MB). Free memory was 166.1 MB in the beginning and 231.9 MB in the end (delta: -65.8 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. [2019-11-07 00:36:46,629 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory is still 120.7 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.08 ms. Allocated memory is still 137.9 MB. Free memory was 102.8 MB in the beginning and 93.1 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.70 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 93.1 MB in the beginning and 180.0 MB in the end (delta: -86.9 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 261.82 ms. Allocated memory is still 201.3 MB. Free memory was 180.0 MB in the beginning and 167.1 MB in the end (delta: 12.9 MB). Peak memory consumption was 12.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7076.07 ms. Allocated memory was 201.3 MB in the beginning and 274.7 MB in the end (delta: 73.4 MB). Free memory was 166.1 MB in the beginning and 231.9 MB in the end (delta: -65.8 MB). Peak memory consumption was 120.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: 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: 35]: Loop Invariant Derived loop invariant: 1 <= a && a * b == y * v + x * u - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((1 <= a && y <= x) && a * b == y * v + x * u) || ((y <= x && x <= y) && v * y + u * y == a * b)) || ((((1 <= a && b == y) && b == u) && a * b == y * v + x * u) && a == x) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 27 locations, 1 error locations. Result: SAFE, OverallTime: 7.0s, OverallIterations: 7, TraceHistogramMax: 7, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, HoareTripleCheckerStatistics: 196 SDtfs, 178 SDslu, 718 SDs, 0 SdLazy, 683 SolverSat, 126 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 415 GetRequests, 341 SyntacticMatches, 4 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 1.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=99occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 47 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 12 LocationsWithAnnotation, 85 PreInvPairs, 147 NumberOfFragments, 227 HoareAnnotationTreeSize, 85 FomulaSimplifications, 6213 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 12 FomulaSimplificationsInter, 192 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 211 NumberOfCodeBlocks, 211 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 399 ConstructedInterpolants, 6 QuantifiedInterpolants, 84518 SizeOfPredicates, 25 NumberOfNonLiveVariables, 481 ConjunctsInSsa, 98 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 476/516 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...