/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/cohendiv.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-24 04:29:05,154 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-24 04:29:05,157 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-24 04:29:05,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-24 04:29:05,175 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-24 04:29:05,176 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-24 04:29:05,178 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-24 04:29:05,187 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-24 04:29:05,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-24 04:29:05,194 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-24 04:29:05,196 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-24 04:29:05,198 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-24 04:29:05,198 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-24 04:29:05,200 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-24 04:29:05,202 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-24 04:29:05,203 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-24 04:29:05,205 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-24 04:29:05,206 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-24 04:29:05,207 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-24 04:29:05,212 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-24 04:29:05,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-24 04:29:05,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-24 04:29:05,221 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-24 04:29:05,222 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-24 04:29:05,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-24 04:29:05,236 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-24 04:29:05,237 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-24 04:29:05,238 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-24 04:29:05,239 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/taipan/svcomp-Reach-32bit-Taipan_Default.epf [2019-11-24 04:29:05,256 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-24 04:29:05,256 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-24 04:29:05,257 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-11-24 04:29:05,257 INFO L138 SettingsManager]: * User list type=DISABLED [2019-11-24 04:29:05,257 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-11-24 04:29:05,257 INFO L138 SettingsManager]: * Explicit value domain=true [2019-11-24 04:29:05,258 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-11-24 04:29:05,258 INFO L138 SettingsManager]: * Octagon Domain=false [2019-11-24 04:29:05,258 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-11-24 04:29:05,258 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-11-24 04:29:05,258 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-11-24 04:29:05,259 INFO L138 SettingsManager]: * Interval Domain=false [2019-11-24 04:29:05,259 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-11-24 04:29:05,259 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-11-24 04:29:05,259 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-11-24 04:29:05,260 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-24 04:29:05,260 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-24 04:29:05,260 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-24 04:29:05,260 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-24 04:29:05,261 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-24 04:29:05,261 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-24 04:29:05,261 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-24 04:29:05,261 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-24 04:29:05,261 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-24 04:29:05,262 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-24 04:29:05,262 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-24 04:29:05,262 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-24 04:29:05,262 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-24 04:29:05,262 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-24 04:29:05,263 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-24 04:29:05,263 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-24 04:29:05,263 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-24 04:29:05,263 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-24 04:29:05,264 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-11-24 04:29:05,264 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-24 04:29:05,264 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-24 04:29:05,264 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-24 04:29:05,264 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-11-24 04:29:05,560 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-24 04:29:05,573 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-24 04:29:05,576 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-24 04:29:05,578 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-24 04:29:05,578 INFO L275 PluginConnector]: CDTParser initialized [2019-11-24 04:29:05,579 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/cohendiv.c [2019-11-24 04:29:05,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ffa921b/b66c3a25985146afa963234ba33f0946/FLAG2bfb1aac0 [2019-11-24 04:29:06,103 INFO L306 CDTParser]: Found 1 translation units. [2019-11-24 04:29:06,104 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/cohendiv.c [2019-11-24 04:29:06,111 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ffa921b/b66c3a25985146afa963234ba33f0946/FLAG2bfb1aac0 [2019-11-24 04:29:06,494 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e1ffa921b/b66c3a25985146afa963234ba33f0946 [2019-11-24 04:29:06,503 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-24 04:29:06,504 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-24 04:29:06,505 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-24 04:29:06,505 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-24 04:29:06,509 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-24 04:29:06,510 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,512 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41437b36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06, skipping insertion in model container [2019-11-24 04:29:06,512 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,519 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-24 04:29:06,539 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-24 04:29:06,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:29:06,769 INFO L203 MainTranslator]: Completed pre-run [2019-11-24 04:29:06,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-24 04:29:06,805 INFO L208 MainTranslator]: Completed translation [2019-11-24 04:29:06,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06 WrapperNode [2019-11-24 04:29:06,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-24 04:29:06,806 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-24 04:29:06,807 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-24 04:29:06,807 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-24 04:29:06,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,818 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,911 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-24 04:29:06,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-24 04:29:06,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-24 04:29:06,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-24 04:29:06,922 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,923 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,924 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,924 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,927 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,934 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (1/1) ... [2019-11-24 04:29:06,936 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-24 04:29:06,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-24 04:29:06,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-24 04:29:06,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-24 04:29:06,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (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 [2019-11-24 04:29:06,991 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-24 04:29:06,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-24 04:29:07,268 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-24 04:29:07,268 INFO L284 CfgBuilder]: Removed 20 assume(true) statements. [2019-11-24 04:29:07,269 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:29:07 BoogieIcfgContainer [2019-11-24 04:29:07,270 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-24 04:29:07,271 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-24 04:29:07,271 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-24 04:29:07,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-24 04:29:07,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.11 04:29:06" (1/3) ... [2019-11-24 04:29:07,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f3fe35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:29:07, skipping insertion in model container [2019-11-24 04:29:07,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.11 04:29:06" (2/3) ... [2019-11-24 04:29:07,283 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40f3fe35 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.11 04:29:07, skipping insertion in model container [2019-11-24 04:29:07,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.11 04:29:07" (3/3) ... [2019-11-24 04:29:07,285 INFO L109 eAbstractionObserver]: Analyzing ICFG cohendiv.c [2019-11-24 04:29:07,296 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-24 04:29:07,301 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 7 error locations. [2019-11-24 04:29:07,310 INFO L249 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2019-11-24 04:29:07,333 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-24 04:29:07,334 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-24 04:29:07,334 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-24 04:29:07,334 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-24 04:29:07,334 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-24 04:29:07,334 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-24 04:29:07,334 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-24 04:29:07,335 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-24 04:29:07,350 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2019-11-24 04:29:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-24 04:29:07,355 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:29:07,356 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-24 04:29:07,356 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:29:07,361 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:29:07,361 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-24 04:29:07,368 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:29:07,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628013324] [2019-11-24 04:29:07,369 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:29:07,453 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:29:07,454 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1358273264] [2019-11-24 04:29:07,454 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 [2019-11-24 04:29:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:29:07,493 INFO L255 TraceCheckSpWp]: Trace formula consists of 26 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-24 04:29:07,498 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:29:07,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:07,565 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:29:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:07,597 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628013324] [2019-11-24 04:29:07,598 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:29:07,598 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1358273264] [2019-11-24 04:29:07,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:29:07,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-24 04:29:07,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609367658] [2019-11-24 04:29:07,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:29:07,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:29:07,616 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:29:07,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:29:07,619 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 6 states. [2019-11-24 04:29:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:29:07,865 INFO L93 Difference]: Finished difference Result 75 states and 100 transitions. [2019-11-24 04:29:07,867 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:29:07,869 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 4 [2019-11-24 04:29:07,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:29:07,881 INFO L225 Difference]: With dead ends: 75 [2019-11-24 04:29:07,882 INFO L226 Difference]: Without dead ends: 38 [2019-11-24 04:29:07,888 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2019-11-24 04:29:07,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-24 04:29:07,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2019-11-24 04:29:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-24 04:29:07,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2019-11-24 04:29:07,942 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 4 [2019-11-24 04:29:07,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:29:07,943 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2019-11-24 04:29:07,943 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:29:07,944 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2019-11-24 04:29:07,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-24 04:29:07,944 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:29:07,944 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-24 04:29:08,146 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:29:08,147 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:29:08,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:29:08,148 INFO L82 PathProgramCache]: Analyzing trace with hash 925925231, now seen corresponding path program 1 times [2019-11-24 04:29:08,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:29:08,149 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1792086388] [2019-11-24 04:29:08,150 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:29:08,158 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:29:08,159 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [888604227] [2019-11-24 04:29:08,159 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 [2019-11-24 04:29:08,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:29:08,183 INFO L255 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-24 04:29:08,184 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:29:08,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:08,203 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:29:08,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:08,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1792086388] [2019-11-24 04:29:08,230 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:29:08,230 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [888604227] [2019-11-24 04:29:08,230 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:29:08,230 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-24 04:29:08,231 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476371611] [2019-11-24 04:29:08,232 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:29:08,233 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:29:08,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:29:08,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-24 04:29:08,233 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 6 states. [2019-11-24 04:29:08,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:29:08,403 INFO L93 Difference]: Finished difference Result 52 states and 54 transitions. [2019-11-24 04:29:08,404 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:29:08,404 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 6 [2019-11-24 04:29:08,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:29:08,405 INFO L225 Difference]: With dead ends: 52 [2019-11-24 04:29:08,405 INFO L226 Difference]: Without dead ends: 44 [2019-11-24 04:29:08,407 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:29:08,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-11-24 04:29:08,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 40. [2019-11-24 04:29:08,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2019-11-24 04:29:08,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 43 transitions. [2019-11-24 04:29:08,419 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 43 transitions. Word has length 6 [2019-11-24 04:29:08,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:29:08,419 INFO L462 AbstractCegarLoop]: Abstraction has 40 states and 43 transitions. [2019-11-24 04:29:08,419 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:29:08,420 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 43 transitions. [2019-11-24 04:29:08,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-24 04:29:08,420 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:29:08,421 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:29:08,632 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:29:08,633 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:29:08,633 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:29:08,634 INFO L82 PathProgramCache]: Analyzing trace with hash -1326217983, now seen corresponding path program 1 times [2019-11-24 04:29:08,634 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:29:08,635 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [289200440] [2019-11-24 04:29:08,635 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:29:08,642 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:29:08,642 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317092830] [2019-11-24 04:29:08,642 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 [2019-11-24 04:29:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:29:08,672 INFO L255 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 8 conjunts are in the unsatisfiable core [2019-11-24 04:29:08,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:29:08,703 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-24 04:29:08,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:08,716 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:29:08,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:08,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [289200440] [2019-11-24 04:29:08,749 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:29:08,749 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317092830] [2019-11-24 04:29:08,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-24 04:29:08,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 7 [2019-11-24 04:29:08,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089270567] [2019-11-24 04:29:08,751 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-24 04:29:08,751 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:29:08,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-24 04:29:08,751 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-11-24 04:29:08,752 INFO L87 Difference]: Start difference. First operand 40 states and 43 transitions. Second operand 8 states. [2019-11-24 04:29:08,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:29:08,900 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2019-11-24 04:29:08,900 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-11-24 04:29:08,901 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-11-24 04:29:08,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:29:08,902 INFO L225 Difference]: With dead ends: 40 [2019-11-24 04:29:08,903 INFO L226 Difference]: Without dead ends: 38 [2019-11-24 04:29:08,903 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=101, Unknown=0, NotChecked=0, Total=156 [2019-11-24 04:29:08,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-24 04:29:08,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-11-24 04:29:08,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-11-24 04:29:08,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2019-11-24 04:29:08,918 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 13 [2019-11-24 04:29:08,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:29:08,919 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2019-11-24 04:29:08,919 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-24 04:29:08,919 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2019-11-24 04:29:08,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-24 04:29:08,920 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:29:08,920 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:29:09,124 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:29:09,125 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:29:09,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:29:09,125 INFO L82 PathProgramCache]: Analyzing trace with hash 353712754, now seen corresponding path program 1 times [2019-11-24 04:29:09,125 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:29:09,126 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [619316137] [2019-11-24 04:29:09,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:29:09,136 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:29:09,136 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [636883790] [2019-11-24 04:29:09,136 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 [2019-11-24 04:29:09,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:29:09,174 INFO L255 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 19 conjunts are in the unsatisfiable core [2019-11-24 04:29:09,177 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:29:09,252 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:09,252 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:29:09,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 04:29:09,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [619316137] [2019-11-24 04:29:09,303 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:29:09,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [636883790] [2019-11-24 04:29:09,303 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [752459756] [2019-11-24 04:29:09,328 INFO L159 IcfgInterpreter]: Started Sifa with 16 locations of interest [2019-11-24 04:29:09,329 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:29:09,335 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:29:09,342 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:29:09,343 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:29:09,804 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:29:09,955 WARN L192 SmtUtils]: Spent 128.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 41 [2019-11-24 04:29:10,106 WARN L192 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 44 [2019-11-24 04:29:10,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-11-24 04:29:10,544 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 4] total 12 [2019-11-24 04:29:10,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177994778] [2019-11-24 04:29:10,546 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-24 04:29:10,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:29:10,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-24 04:29:10,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2019-11-24 04:29:10,547 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 6 states. [2019-11-24 04:29:10,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:29:10,692 INFO L93 Difference]: Finished difference Result 70 states and 74 transitions. [2019-11-24 04:29:10,692 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-24 04:29:10,692 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2019-11-24 04:29:10,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:29:10,694 INFO L225 Difference]: With dead ends: 70 [2019-11-24 04:29:10,694 INFO L226 Difference]: Without dead ends: 62 [2019-11-24 04:29:10,695 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 32 SyntacticMatches, 12 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2019-11-24 04:29:10,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2019-11-24 04:29:10,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 58. [2019-11-24 04:29:10,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-11-24 04:29:10,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2019-11-24 04:29:10,707 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 19 [2019-11-24 04:29:10,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:29:10,707 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2019-11-24 04:29:10,707 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-24 04:29:10,707 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2019-11-24 04:29:10,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2019-11-24 04:29:10,708 INFO L402 BasicCegarLoop]: Found error trace [2019-11-24 04:29:10,708 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-24 04:29:10,911 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:29:10,912 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-24 04:29:10,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-24 04:29:10,912 INFO L82 PathProgramCache]: Analyzing trace with hash 811552061, now seen corresponding path program 1 times [2019-11-24 04:29:10,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-11-24 04:29:10,913 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200151840] [2019-11-24 04:29:10,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-24 04:29:10,923 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-24 04:29:10,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2136003630] [2019-11-24 04:29:10,923 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 [2019-11-24 04:29:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-24 04:29:10,958 INFO L255 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-24 04:29:10,960 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-24 04:29:11,041 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-24 04:29:11,041 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-24 04:29:11,099 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-24 04:29:11,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200151840] [2019-11-24 04:29:11,099 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:29:11,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136003630] [2019-11-24 04:29:11,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1078726652] [2019-11-24 04:29:11,101 INFO L159 IcfgInterpreter]: Started Sifa with 18 locations of interest [2019-11-24 04:29:11,102 INFO L166 IcfgInterpreter]: Building call graph [2019-11-24 04:29:11,102 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-11-24 04:29:11,102 INFO L176 IcfgInterpreter]: Starting interpretation [2019-11-24 04:29:11,103 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-11-24 04:29:19,164 INFO L180 IcfgInterpreter]: Interpretation finished [2019-11-24 04:29:19,293 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 23 [2019-11-24 04:29:19,755 WARN L192 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 39 [2019-11-24 04:29:19,922 WARN L192 SmtUtils]: Spent 130.00 ms on a formula simplification. DAG size of input: 44 DAG size of output: 34 [2019-11-24 04:29:20,221 WARN L192 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 63 [2019-11-24 04:29:20,648 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-24 04:29:20,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-24 04:29:20,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 10 [2019-11-24 04:29:20,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417160314] [2019-11-24 04:29:20,650 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2019-11-24 04:29:20,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-11-24 04:29:20,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2019-11-24 04:29:20,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=497, Unknown=0, NotChecked=0, Total=600 [2019-11-24 04:29:20,652 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand 11 states. [2019-11-24 04:29:21,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-24 04:29:21,541 INFO L93 Difference]: Finished difference Result 89 states and 98 transitions. [2019-11-24 04:29:21,542 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2019-11-24 04:29:21,542 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 28 [2019-11-24 04:29:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-24 04:29:21,543 INFO L225 Difference]: With dead ends: 89 [2019-11-24 04:29:21,543 INFO L226 Difference]: Without dead ends: 0 [2019-11-24 04:29:21,548 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 58 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 332 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=247, Invalid=1159, Unknown=0, NotChecked=0, Total=1406 [2019-11-24 04:29:21,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-24 04:29:21,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-24 04:29:21,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-24 04:29:21,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-24 04:29:21,550 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2019-11-24 04:29:21,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-24 04:29:21,550 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-24 04:29:21,550 INFO L463 AbstractCegarLoop]: Interpolant automaton has 11 states. [2019-11-24 04:29:21,550 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-24 04:29:21,550 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-24 04:29:21,759 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-24 04:29:21,764 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-24 04:29:22,165 WARN L192 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 39 [2019-11-24 04:29:22,343 INFO L444 ceAbstractionStarter]: For program point L10-9(lines 10 13) no Hoare annotation was computed. [2019-11-24 04:29:22,343 INFO L440 ceAbstractionStarter]: At program point L10-11(lines 9 15) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-24 04:29:22,343 INFO L444 ceAbstractionStarter]: For program point L10-12(lines 10 13) no Hoare annotation was computed. [2019-11-24 04:29:22,343 INFO L440 ceAbstractionStarter]: At program point L10-14(lines 44 45) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-24 04:29:22,343 INFO L444 ceAbstractionStarter]: For program point L10-15(lines 10 13) no Hoare annotation was computed. [2019-11-24 04:29:22,344 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-24 04:29:22,344 INFO L440 ceAbstractionStarter]: At program point L10-17(lines 9 15) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-24 04:29:22,344 INFO L444 ceAbstractionStarter]: For program point L10-18(lines 10 13) no Hoare annotation was computed. [2019-11-24 04:29:22,344 INFO L440 ceAbstractionStarter]: At program point L10-20(lines 9 15) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) [2019-11-24 04:29:22,344 INFO L444 ceAbstractionStarter]: For program point L11(lines 11 12) no Hoare annotation was computed. [2019-11-24 04:29:22,344 INFO L444 ceAbstractionStarter]: For program point L11-1(lines 11 12) no Hoare annotation was computed. [2019-11-24 04:29:22,344 INFO L444 ceAbstractionStarter]: For program point L11-2(lines 11 12) no Hoare annotation was computed. [2019-11-24 04:29:22,345 INFO L444 ceAbstractionStarter]: For program point L11-3(lines 11 12) no Hoare annotation was computed. [2019-11-24 04:29:22,345 INFO L444 ceAbstractionStarter]: For program point L11-4(lines 11 12) no Hoare annotation was computed. [2019-11-24 04:29:22,345 INFO L444 ceAbstractionStarter]: For program point L11-5(lines 11 12) no Hoare annotation was computed. [2019-11-24 04:29:22,345 INFO L444 ceAbstractionStarter]: For program point L11-6(lines 11 12) no Hoare annotation was computed. [2019-11-24 04:29:22,345 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-24 04:29:22,345 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-24 04:29:22,345 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-24 04:29:22,346 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-24 04:29:22,346 INFO L440 ceAbstractionStarter]: At program point L30-2(lines 30 54) the Hoare annotation is: (let ((.cse0 (= ULTIMATE.start_main_~a~0 0))) (let ((.cse1 (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0))) (.cse2 (or (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (not (= 0 ULTIMATE.start___VERIFIER_assert_~cond))) (and (= ULTIMATE.start_main_~b~0 0) .cse0))) (.cse3 (<= 1 ULTIMATE.start_main_~y~0))) (or (and .cse0 (<= ULTIMATE.start_main_~x~0 2147483647) (<= 0 (+ ULTIMATE.start_main_~x~0 2147483648)) .cse1 .cse2 (= ULTIMATE.start_main_~q~0 0) .cse3 (<= ULTIMATE.start_main_~y~0 2147483647)) (and .cse1 .cse2 (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse3)))) [2019-11-24 04:29:22,346 INFO L444 ceAbstractionStarter]: For program point L30-3(lines 30 54) no Hoare annotation was computed. [2019-11-24 04:29:22,346 INFO L440 ceAbstractionStarter]: At program point L39-2(lines 39 51) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-24 04:29:22,346 INFO L444 ceAbstractionStarter]: For program point L39-3(lines 39 51) no Hoare annotation was computed. [2019-11-24 04:29:22,346 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-24 04:29:22,347 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-24 04:29:22,347 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-24 04:29:22,347 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2019-11-24 04:29:22,347 INFO L444 ceAbstractionStarter]: For program point L10(lines 10 13) no Hoare annotation was computed. [2019-11-24 04:29:22,347 INFO L440 ceAbstractionStarter]: At program point L10-2(lines 9 15) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-24 04:29:22,347 INFO L444 ceAbstractionStarter]: For program point L10-3(lines 10 13) no Hoare annotation was computed. [2019-11-24 04:29:22,347 INFO L440 ceAbstractionStarter]: At program point L10-5(lines 34 35) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-24 04:29:22,348 INFO L444 ceAbstractionStarter]: For program point L10-6(lines 10 13) no Hoare annotation was computed. [2019-11-24 04:29:22,348 INFO L440 ceAbstractionStarter]: At program point L10-8(lines 9 15) the Hoare annotation is: (and (= ULTIMATE.start_main_~b~0 (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~a~0)) (= (+ (* (+ ULTIMATE.start_main_~q~0 (* ULTIMATE.start_main_~a~0 2)) ULTIMATE.start_main_~y~0) ULTIMATE.start_main_~r~0) (+ (* ULTIMATE.start_main_~b~0 2) ULTIMATE.start_main_~x~0)) (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (<= 1 ULTIMATE.start_main_~r~0) (<= 1 ULTIMATE.start_main_~y~0)) [2019-11-24 04:29:22,391 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.11 04:29:22 BoogieIcfgContainer [2019-11-24 04:29:22,392 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-24 04:29:22,397 INFO L168 Benchmark]: Toolchain (without parser) took 15889.15 ms. Allocated memory was 137.9 MB in the beginning and 295.2 MB in the end (delta: 157.3 MB). Free memory was 102.5 MB in the beginning and 225.0 MB in the end (delta: -122.5 MB). Peak memory consumption was 152.0 MB. Max. memory is 7.1 GB. [2019-11-24 04:29:22,400 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.9 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-11-24 04:29:22,401 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.88 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:29:22,402 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.35 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.4 MB in the beginning and 180.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:29:22,402 INFO L168 Benchmark]: Boogie Preprocessor took 24.41 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 179.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2019-11-24 04:29:22,406 INFO L168 Benchmark]: RCFGBuilder took 333.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 162.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. [2019-11-24 04:29:22,407 INFO L168 Benchmark]: TraceAbstraction took 15120.48 ms. Allocated memory was 201.3 MB in the beginning and 295.2 MB in the end (delta: 93.8 MB). Free memory was 162.6 MB in the beginning and 225.0 MB in the end (delta: -62.4 MB). Peak memory consumption was 148.8 MB. Max. memory is 7.1 GB. [2019-11-24 04:29:22,416 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 was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 300.88 ms. Allocated memory is still 137.9 MB. Free memory was 102.3 MB in the beginning and 92.4 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 105.35 ms. Allocated memory was 137.9 MB in the beginning and 201.3 MB in the end (delta: 63.4 MB). Free memory was 92.4 MB in the beginning and 180.4 MB in the end (delta: -88.0 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 24.41 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 179.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 333.43 ms. Allocated memory is still 201.3 MB. Free memory was 179.0 MB in the beginning and 162.6 MB in the end (delta: 16.3 MB). Peak memory consumption was 16.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15120.48 ms. Allocated memory was 201.3 MB in the beginning and 295.2 MB in the end (delta: 93.8 MB). Free memory was 162.6 MB in the beginning and 225.0 MB in the end (delta: -62.4 MB). Peak memory consumption was 148.8 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 - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - 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 7 specifications checked. All of them hold - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((b == y * a && (q + a * 2) * y + r == b * 2 + x) && 1 == cond) && 1 <= r) && 1 <= y - InvariantResult [Line: 34]: Loop Invariant Derived loop invariant: ((b == y * a && (q + a * 2) * y + r == b * 2 + x) && 1 == cond) && 1 <= y - InvariantResult [Line: 39]: Loop Invariant Derived loop invariant: (((b == y * a && (q + a * 2) * y + r == b * 2 + x) && 1 == cond) && 1 <= r) && 1 <= y - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: b == y * a && !(0 == cond) - InvariantResult [Line: 44]: Loop Invariant Derived loop invariant: (((b == y * a && (q + a * 2) * y + r == b * 2 + x) && 1 == cond) && 1 <= r) && 1 <= y - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (((((((a == 0 && x <= 2147483647) && 0 <= x + 2147483648) && (q + a * 2) * y + r == b * 2 + x) && ((b == y * a && !(0 == cond)) || (b == 0 && a == 0))) && q == 0) && 1 <= y) && y <= 2147483647) || ((((q + a * 2) * y + r == b * 2 + x && ((b == y * a && !(0 == cond)) || (b == 0 && a == 0))) && 1 == cond) && 1 <= y) - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((b == y * a && (q + a * 2) * y + r == b * 2 + x) && 1 == cond) && 1 <= r) && 1 <= y - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: ((b == y * a && (q + a * 2) * y + r == b * 2 + x) && 1 == cond) && 1 <= y - InvariantResult [Line: 9]: Loop Invariant Derived loop invariant: (((b == y * a && (q + a * 2) * y + r == b * 2 + x) && 1 == cond) && 1 <= r) && 1 <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 34 locations, 7 error locations. Result: SAFE, OverallTime: 15.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, HoareTripleCheckerStatistics: 54 SDtfs, 222 SDslu, 72 SDs, 0 SdLazy, 378 SolverSat, 203 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 201 GetRequests, 116 SyntacticMatches, 13 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 454 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=4, 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, 5 MinimizatonAttempts, 20 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 9 PreInvPairs, 52 NumberOfFragments, 309 HoareAnnotationTreeSize, 9 FomulaSimplifications, 1196 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 1531 FormulaSimplificationTreeSizeReductionInter, 0.5s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 70 NumberOfCodeBlocks, 70 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 130 ConstructedInterpolants, 0 QuantifiedInterpolants, 25962 SizeOfPredicates, 32 NumberOfNonLiveVariables, 265 ConjunctsInSsa, 72 ConjunctsInUnsatCore, 10 InterpolantComputations, 6 PerfectInterpolantSequences, 6/30 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 477, ICFG_INTERPRETER_ENTERED_PROCEDURES: 1, DAG_INTERPRETER_EARLY_EXIT_QUERIES_NONTRIVIAL: 18, DAG_INTERPRETER_EARLY_EXITS: 1, TOOLS_POST_APPLICATIONS: 39, TOOLS_POST_TIME[ms]: 56, TOOLS_POST_CALL_APPLICATIONS: 0, TOOLS_POST_CALL_TIME[ms]: 0, TOOLS_POST_RETURN_APPLICATIONS: 0, TOOLS_POST_RETURN_TIME[ms]: 0, TOOLS_QUANTIFIERELIM_APPLICATIONS: 39, TOOLS_QUANTIFIERELIM_TIME[ms]: 44, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 9, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 57, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 6, DOMAIN_JOIN_TIME[ms]: 284, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 1, DOMAIN_ISSUBSETEQ_TIME[ms]: 2, DOMAIN_ISBOTTOM_APPLICATIONS: 18, DOMAIN_ISBOTTOM_TIME[ms]: 53, LOOP_SUMMARIZER_APPLICATIONS: 1, LOOP_SUMMARIZER_CACHE_MISSES: 1, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 21, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 20, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 1, CALL_SUMMARIZER_APPLICATIONS: 0, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 0, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 3, PATH_EXPR_TIME[ms]: 4, REGEX_TO_DAG_TIME[ms]: 4, DAG_COMPRESSION_TIME[ms]: 32, DAG_COMPRESSION_PROCESSED_NODES: 412, DAG_COMPRESSION_RETAINED_NODES: 62, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...