/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/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/lcm2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:17:52,976 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:17:52,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:17:52,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:17:52,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:17:52,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:17:52,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:17:53,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:17:53,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:17:53,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:17:53,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:17:53,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 22:17:53,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 22:17:53,020 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 22:17:53,023 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 22:17:53,024 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 22:17:53,025 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 22:17:53,026 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 22:17:53,027 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 22:17:53,032 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 22:17:53,036 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 22:17:53,039 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 22:17:53,040 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 22:17:53,040 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 22:17:53,043 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-23 22:17:53,043 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-23 22:17:53,043 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-23 22:17:53,045 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-23 22:17:53,046 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-23 22:17:53,047 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-23 22:17:53,047 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-23 22:17:53,048 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-23 22:17:53,049 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-23 22:17:53,050 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-23 22:17:53,051 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-23 22:17:53,051 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-23 22:17:53,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-23 22:17:53,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-23 22:17:53,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 22:17:53,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 22:17:53,056 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 22:17:53,056 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 [2019-11-23 22:17:53,085 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:17:53,085 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:17:53,087 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:17:53,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:17:53,092 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:17:53,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:17:53,093 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:17:53,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:17:53,093 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:17:53,093 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:17:53,093 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:17:53,093 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:17:53,094 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:17:53,094 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:17:53,094 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:17:53,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:17:53,094 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:17:53,095 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:17:53,095 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:17:53,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:17:53,095 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:17:53,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:17:53,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:17:53,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:17:53,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:17:53,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:17:53,097 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:17:53,097 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:17:53,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:17:53,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:17:53,355 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:17:53,373 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:17:53,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:17:53,378 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:17:53,379 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:17:53,380 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/lcm2.c [2019-11-23 22:17:53,447 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899f1d360/3bcdb593d7f64b649e7fabcb2421f1fa/FLAGd16093f42 [2019-11-23 22:17:53,874 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:17:53,875 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/lcm2.c [2019-11-23 22:17:53,881 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899f1d360/3bcdb593d7f64b649e7fabcb2421f1fa/FLAGd16093f42 [2019-11-23 22:17:54,318 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/899f1d360/3bcdb593d7f64b649e7fabcb2421f1fa [2019-11-23 22:17:54,326 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:17:54,327 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:17:54,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:17:54,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:17:54,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:17:54,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,335 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@155f1e4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54, skipping insertion in model container [2019-11-23 22:17:54,336 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,343 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:17:54,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:17:54,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:17:54,548 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:17:54,584 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:17:54,598 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:17:54,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54 WrapperNode [2019-11-23 22:17:54,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:17:54,599 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:17:54,600 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:17:54,600 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:17:54,607 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,612 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,711 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:17:54,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:17:54,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:17:54,712 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:17:54,720 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,720 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,721 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,722 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,724 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,729 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,730 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (1/1) ... [2019-11-23 22:17:54,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:17:54,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:17:54,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:17:54,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:17:54,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (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 [2019-11-23 22:17:54,782 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:17:54,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:17:54,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_unsigned_int [2019-11-23 22:17:54,971 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:17:54,971 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-11-23 22:17:54,972 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:17:54 BoogieIcfgContainer [2019-11-23 22:17:54,973 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:17:54,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:17:54,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:17:54,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:17:54,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:17:54" (1/3) ... [2019-11-23 22:17:54,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37558597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:17:54, skipping insertion in model container [2019-11-23 22:17:54,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:17:54" (2/3) ... [2019-11-23 22:17:54,993 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@37558597 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:17:54, skipping insertion in model container [2019-11-23 22:17:54,993 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:17:54" (3/3) ... [2019-11-23 22:17:54,998 INFO L109 eAbstractionObserver]: Analyzing ICFG lcm2.c [2019-11-23 22:17:55,016 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:17:55,026 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 2 error locations. [2019-11-23 22:17:55,047 INFO L249 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2019-11-23 22:17:55,072 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:17:55,072 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:17:55,073 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:17:55,073 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:17:55,073 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:17:55,073 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:17:55,073 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:17:55,074 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:17:55,098 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states. [2019-11-23 22:17:55,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2019-11-23 22:17:55,106 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:55,107 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2019-11-23 22:17:55,107 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:55,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:55,114 INFO L82 PathProgramCache]: Analyzing trace with hash 963340, now seen corresponding path program 1 times [2019-11-23 22:17:55,121 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:55,121 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958696914] [2019-11-23 22:17:55,121 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:55,198 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:55,198 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1535959815] [2019-11-23 22:17:55,198 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 [2019-11-23 22:17:55,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:17:55,237 WARN L253 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 15 conjunts are in the unsatisfiable core [2019-11-23 22:17:55,241 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:55,311 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:17:55,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:55,343 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958696914] [2019-11-23 22:17:55,344 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:55,344 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535959815] [2019-11-23 22:17:55,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:17:55,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 22:17:55,347 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815458024] [2019-11-23 22:17:55,351 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-23 22:17:55,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:55,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-23 22:17:55,367 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-23 22:17:55,369 INFO L87 Difference]: Start difference. First operand 15 states. Second operand 4 states. [2019-11-23 22:17:55,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:55,483 INFO L93 Difference]: Finished difference Result 40 states and 57 transitions. [2019-11-23 22:17:55,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:17:55,485 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 4 [2019-11-23 22:17:55,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:55,498 INFO L225 Difference]: With dead ends: 40 [2019-11-23 22:17:55,498 INFO L226 Difference]: Without dead ends: 16 [2019-11-23 22:17:55,503 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:17:55,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2019-11-23 22:17:55,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 14. [2019-11-23 22:17:55,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2019-11-23 22:17:55,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2019-11-23 22:17:55,554 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 4 [2019-11-23 22:17:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:55,555 INFO L462 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2019-11-23 22:17:55,555 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-23 22:17:55,556 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2019-11-23 22:17:55,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:17:55,557 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:55,557 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:17:55,761 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:55,762 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:55,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:55,763 INFO L82 PathProgramCache]: Analyzing trace with hash 759715009, now seen corresponding path program 1 times [2019-11-23 22:17:55,764 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:55,765 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1268332244] [2019-11-23 22:17:55,765 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:55,784 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:55,784 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1955402783] [2019-11-23 22:17:55,785 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 [2019-11-23 22:17:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:17:55,817 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 25 conjunts are in the unsatisfiable core [2019-11-23 22:17:55,819 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:55,978 WARN L192 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 28 [2019-11-23 22:17:56,079 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:17:56,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:56,099 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1268332244] [2019-11-23 22:17:56,099 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:56,100 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955402783] [2019-11-23 22:17:56,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:17:56,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-23 22:17:56,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952319439] [2019-11-23 22:17:56,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:17:56,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:56,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:17:56,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:17:56,104 INFO L87 Difference]: Start difference. First operand 14 states and 15 transitions. Second operand 5 states. [2019-11-23 22:17:56,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:56,296 INFO L93 Difference]: Finished difference Result 26 states and 29 transitions. [2019-11-23 22:17:56,297 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:17:56,297 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-23 22:17:56,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:56,312 INFO L225 Difference]: With dead ends: 26 [2019-11-23 22:17:56,313 INFO L226 Difference]: Without dead ends: 20 [2019-11-23 22:17:56,314 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:17:56,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-23 22:17:56,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2019-11-23 22:17:56,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:17:56,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-23 22:17:56,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2019-11-23 22:17:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:56,329 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-23 22:17:56,330 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:17:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-23 22:17:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:17:56,331 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:56,331 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2019-11-23 22:17:56,537 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:56,538 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:56,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:56,539 INFO L82 PathProgramCache]: Analyzing trace with hash 759774591, now seen corresponding path program 1 times [2019-11-23 22:17:56,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:56,540 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [261736550] [2019-11-23 22:17:56,541 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:56,555 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:56,555 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [379457990] [2019-11-23 22:17:56,555 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 [2019-11-23 22:17:56,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:17:56,585 WARN L253 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-23 22:17:56,587 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:58,790 WARN L192 SmtUtils]: Spent 2.18 s on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-11-23 22:17:58,920 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:17:58,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:58,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [261736550] [2019-11-23 22:17:58,936 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:58,936 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [379457990] [2019-11-23 22:17:58,937 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:17:58,937 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2019-11-23 22:17:58,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412012176] [2019-11-23 22:17:58,937 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:17:58,938 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:58,938 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:17:58,938 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:17:58,939 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 5 states. [2019-11-23 22:17:59,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:59,176 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2019-11-23 22:17:59,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:17:59,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-23 22:17:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:59,180 INFO L225 Difference]: With dead ends: 29 [2019-11-23 22:17:59,180 INFO L226 Difference]: Without dead ends: 23 [2019-11-23 22:17:59,181 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-23 22:17:59,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-11-23 22:17:59,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 18. [2019-11-23 22:17:59,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2019-11-23 22:17:59,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2019-11-23 22:17:59,190 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2019-11-23 22:17:59,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:59,190 INFO L462 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2019-11-23 22:17:59,190 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:17:59,191 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2019-11-23 22:17:59,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:17:59,192 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:59,192 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2019-11-23 22:17:59,395 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:17:59,395 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:17:59,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:17:59,396 INFO L82 PathProgramCache]: Analyzing trace with hash -54520842, now seen corresponding path program 2 times [2019-11-23 22:17:59,396 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:17:59,397 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224891212] [2019-11-23 22:17:59,397 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:17:59,410 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:17:59,410 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1482764240] [2019-11-23 22:17:59,411 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-23 22:17:59,442 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:17:59,443 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:17:59,444 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 26 conjunts are in the unsatisfiable core [2019-11-23 22:17:59,445 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:17:59,586 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:17:59,603 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:17:59,603 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224891212] [2019-11-23 22:17:59,604 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:17:59,604 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482764240] [2019-11-23 22:17:59,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:17:59,604 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:17:59,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137853558] [2019-11-23 22:17:59,605 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:17:59,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:17:59,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:17:59,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:17:59,606 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 6 states. [2019-11-23 22:17:59,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:17:59,839 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-11-23 22:17:59,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:17:59,840 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-23 22:17:59,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:17:59,841 INFO L225 Difference]: With dead ends: 33 [2019-11-23 22:17:59,841 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 22:17:59,842 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:17:59,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 22:17:59,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-23 22:17:59,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 22:17:59,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-23 22:17:59,850 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-23 22:17:59,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:17:59,850 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-23 22:17:59,850 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:17:59,850 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-23 22:17:59,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:17:59,851 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:17:59,851 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2019-11-23 22:18:00,063 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:00,063 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:00,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:00,063 INFO L82 PathProgramCache]: Analyzing trace with hash -54461260, now seen corresponding path program 1 times [2019-11-23 22:18:00,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:00,064 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [454336597] [2019-11-23 22:18:00,064 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:00,073 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:00,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [639349379] [2019-11-23 22:18:00,074 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 [2019-11-23 22:18:00,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:18:00,107 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 29 conjunts are in the unsatisfiable core [2019-11-23 22:18:00,109 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:00,266 WARN L192 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 36 [2019-11-23 22:18:00,419 WARN L192 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 46 [2019-11-23 22:18:00,523 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:00,546 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:00,546 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [454336597] [2019-11-23 22:18:00,546 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:00,547 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [639349379] [2019-11-23 22:18:00,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:00,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:18:00,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215016399] [2019-11-23 22:18:00,548 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:18:00,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:00,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:18:00,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:18:00,549 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-23 22:18:01,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:01,024 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2019-11-23 22:18:01,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:18:01,028 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-23 22:18:01,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:01,029 INFO L225 Difference]: With dead ends: 33 [2019-11-23 22:18:01,029 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 22:18:01,030 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:18:01,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 22:18:01,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2019-11-23 22:18:01,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 22:18:01,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-23 22:18:01,038 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-23 22:18:01,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:01,038 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-23 22:18:01,038 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:18:01,038 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-23 22:18:01,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:18:01,039 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:01,039 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1] [2019-11-23 22:18:01,248 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:01,249 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:01,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:01,250 INFO L82 PathProgramCache]: Analyzing trace with hash -863867468, now seen corresponding path program 2 times [2019-11-23 22:18:01,250 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:01,251 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768160240] [2019-11-23 22:18:01,251 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:01,259 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:01,260 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1293846821] [2019-11-23 22:18:01,260 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 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 [2019-11-23 22:18:01,296 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:18:01,296 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:01,297 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 27 conjunts are in the unsatisfiable core [2019-11-23 22:18:01,298 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:01,454 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:01,467 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:01,468 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768160240] [2019-11-23 22:18:01,468 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:01,468 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1293846821] [2019-11-23 22:18:01,468 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:01,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:18:01,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626286856] [2019-11-23 22:18:01,469 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:18:01,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:01,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:18:01,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:18:01,470 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-23 22:18:01,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:01,707 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2019-11-23 22:18:01,707 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:18:01,707 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-23 22:18:01,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:01,708 INFO L225 Difference]: With dead ends: 37 [2019-11-23 22:18:01,708 INFO L226 Difference]: Without dead ends: 31 [2019-11-23 22:18:01,709 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:18:01,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-11-23 22:18:01,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 26. [2019-11-23 22:18:01,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:18:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-23 22:18:01,716 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 12 [2019-11-23 22:18:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:01,716 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-23 22:18:01,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:18:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-23 22:18:01,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-23 22:18:01,717 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:01,717 INFO L410 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1] [2019-11-23 22:18:01,920 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:01,921 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:01,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:01,922 INFO L82 PathProgramCache]: Analyzing trace with hash -863807886, now seen corresponding path program 2 times [2019-11-23 22:18:01,922 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:01,923 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635762675] [2019-11-23 22:18:01,923 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:01,935 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:01,936 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1580524466] [2019-11-23 22:18:01,936 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:01,968 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:18:01,969 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:01,969 INFO L255 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 23 conjunts are in the unsatisfiable core [2019-11-23 22:18:01,970 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:02,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:02,033 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:18:02,033 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635762675] [2019-11-23 22:18:02,034 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:02,034 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580524466] [2019-11-23 22:18:02,034 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:02,034 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2019-11-23 22:18:02,034 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1458073553] [2019-11-23 22:18:02,035 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:18:02,035 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:02,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:18:02,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:18:02,036 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 6 states. [2019-11-23 22:18:02,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:02,174 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2019-11-23 22:18:02,175 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-11-23 22:18:02,175 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-11-23 22:18:02,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:02,176 INFO L225 Difference]: With dead ends: 38 [2019-11-23 22:18:02,176 INFO L226 Difference]: Without dead ends: 32 [2019-11-23 22:18:02,176 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:18:02,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-11-23 22:18:02,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 22. [2019-11-23 22:18:02,183 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 22:18:02,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-23 22:18:02,184 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 12 [2019-11-23 22:18:02,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:02,184 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-23 22:18:02,184 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:18:02,185 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-23 22:18:02,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 22:18:02,185 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:02,185 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 1, 1, 1] [2019-11-23 22:18:02,388 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:02,389 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:02,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:02,390 INFO L82 PathProgramCache]: Analyzing trace with hash -1087688533, now seen corresponding path program 3 times [2019-11-23 22:18:02,390 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:02,392 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637594567] [2019-11-23 22:18:02,392 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:02,401 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:02,402 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [989624004] [2019-11-23 22:18:02,402 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:02,450 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 22:18:02,450 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:02,452 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 34 conjunts are in the unsatisfiable core [2019-11-23 22:18:02,454 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:04,043 WARN L192 SmtUtils]: Spent 1.50 s on a formula simplification. DAG size of input: 32 DAG size of output: 26 [2019-11-23 22:18:04,279 WARN L192 SmtUtils]: Spent 205.00 ms on a formula simplification that was a NOOP. DAG size: 24 [2019-11-23 22:18:06,672 WARN L192 SmtUtils]: Spent 2.36 s on a formula simplification. DAG size of input: 37 DAG size of output: 37 [2019-11-23 22:18:06,673 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:06,793 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:06,824 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 22:18:06,824 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637594567] [2019-11-23 22:18:06,825 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:06,825 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [989624004] [2019-11-23 22:18:06,825 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:06,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:18:06,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007146372] [2019-11-23 22:18:06,825 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:18:06,826 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:06,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:18:06,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:18:06,826 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 8 states. [2019-11-23 22:18:06,948 WARN L192 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 30 [2019-11-23 22:18:09,617 WARN L192 SmtUtils]: Spent 2.64 s on a formula simplification. DAG size of input: 38 DAG size of output: 32 [2019-11-23 22:18:09,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:09,786 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2019-11-23 22:18:09,787 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:18:09,787 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-23 22:18:09,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:09,788 INFO L225 Difference]: With dead ends: 41 [2019-11-23 22:18:09,788 INFO L226 Difference]: Without dead ends: 35 [2019-11-23 22:18:09,789 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 7.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:18:09,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-11-23 22:18:09,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 30. [2019-11-23 22:18:09,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-23 22:18:09,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2019-11-23 22:18:09,800 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 16 [2019-11-23 22:18:09,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:09,800 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2019-11-23 22:18:09,801 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:18:09,801 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2019-11-23 22:18:09,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 22:18:09,801 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:09,803 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2019-11-23 22:18:10,003 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:10,004 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:10,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:10,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1087628951, now seen corresponding path program 3 times [2019-11-23 22:18:10,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:10,005 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028160917] [2019-11-23 22:18:10,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:10,015 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:10,015 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1653696052] [2019-11-23 22:18:10,016 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:10,051 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 22:18:10,051 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:10,052 WARN L253 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 28 conjunts are in the unsatisfiable core [2019-11-23 22:18:10,053 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:14,375 WARN L192 SmtUtils]: Spent 4.21 s on a formula simplification that was a NOOP. DAG size: 43 [2019-11-23 22:18:14,377 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 4 terms [2019-11-23 22:18:14,506 WARN L192 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-11-23 22:18:15,876 WARN L192 SmtUtils]: Spent 1.35 s on a formula simplification. DAG size of input: 42 DAG size of output: 33 [2019-11-23 22:18:15,878 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:15,898 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-11-23 22:18:15,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028160917] [2019-11-23 22:18:15,899 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:15,899 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653696052] [2019-11-23 22:18:15,899 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:15,899 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:18:15,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584262679] [2019-11-23 22:18:15,900 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-23 22:18:15,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:15,901 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-23 22:18:15,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2019-11-23 22:18:15,901 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 8 states. [2019-11-23 22:18:17,325 WARN L192 SmtUtils]: Spent 1.38 s on a formula simplification. DAG size of input: 47 DAG size of output: 40 [2019-11-23 22:18:17,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:17,504 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2019-11-23 22:18:17,504 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-23 22:18:17,504 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2019-11-23 22:18:17,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:17,505 INFO L225 Difference]: With dead ends: 44 [2019-11-23 22:18:17,505 INFO L226 Difference]: Without dead ends: 38 [2019-11-23 22:18:17,505 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:18:17,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-11-23 22:18:17,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 26. [2019-11-23 22:18:17,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-23 22:18:17,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 30 transitions. [2019-11-23 22:18:17,513 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 30 transitions. Word has length 16 [2019-11-23 22:18:17,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:17,514 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 30 transitions. [2019-11-23 22:18:17,514 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-23 22:18:17,514 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 30 transitions. [2019-11-23 22:18:17,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 22:18:17,514 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:18:17,514 INFO L410 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 1, 1, 1, 1] [2019-11-23 22:18:17,715 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:17,715 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:18:17,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:18:17,715 INFO L82 PathProgramCache]: Analyzing trace with hash -1897035159, now seen corresponding path program 4 times [2019-11-23 22:18:17,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:18:17,716 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478551832] [2019-11-23 22:18:17,717 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:18:17,737 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-11-23 22:18:17,741 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1840778452] [2019-11-23 22:18:17,741 INFO L92 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:17,802 INFO L249 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2019-11-23 22:18:17,803 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:18:17,804 WARN L253 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 24 conjunts are in the unsatisfiable core [2019-11-23 22:18:17,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:18:17,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:22,134 WARN L192 SmtUtils]: Spent 4.15 s on a formula simplification. DAG size of input: 29 DAG size of output: 29 [2019-11-23 22:18:22,135 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:22,164 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:18:24,176 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 10 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 22:18:24,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478551832] [2019-11-23 22:18:24,176 INFO L343 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-11-23 22:18:24,176 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1840778452] [2019-11-23 22:18:24,176 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:18:24,177 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2019-11-23 22:18:24,177 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [854753544] [2019-11-23 22:18:24,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-11-23 22:18:24,177 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:18:24,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-11-23 22:18:24,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=27, Unknown=1, NotChecked=0, Total=42 [2019-11-23 22:18:24,178 INFO L87 Difference]: Start difference. First operand 26 states and 30 transitions. Second operand 7 states. [2019-11-23 22:18:24,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:18:24,227 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2019-11-23 22:18:24,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:18:24,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2019-11-23 22:18:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:18:24,228 INFO L225 Difference]: With dead ends: 26 [2019-11-23 22:18:24,228 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:18:24,228 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 6.3s TimeCoverageRelationStatistics Valid=21, Invalid=34, Unknown=1, NotChecked=0, Total=56 [2019-11-23 22:18:24,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:18:24,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:18:24,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:18:24,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:18:24,229 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-11-23 22:18:24,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:18:24,230 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:18:24,230 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-11-23 22:18:24,230 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:18:24,230 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:18:24,430 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:18:24,435 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:18:24,539 WARN L192 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 191 DAG size of output: 17 [2019-11-23 22:18:28,993 WARN L192 SmtUtils]: Spent 4.38 s on a formula simplification. DAG size of input: 117 DAG size of output: 40 [2019-11-23 22:18:28,996 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:18:28,997 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:28,997 INFO L444 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:28,997 INFO L440 ceAbstractionStarter]: At program point L7-2(lines 33 34) the Hoare annotation is: (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* (* ULTIMATE.start_main_~a~0 2) ULTIMATE.start_main_~b~0))) [2019-11-23 22:18:28,997 INFO L444 ceAbstractionStarter]: For program point L36(lines 36 42) no Hoare annotation was computed. [2019-11-23 22:18:28,998 INFO L444 ceAbstractionStarter]: For program point L7-3(lines 7 10) no Hoare annotation was computed. [2019-11-23 22:18:28,998 INFO L440 ceAbstractionStarter]: At program point L36-2(lines 30 43) the Hoare annotation is: (let ((.cse0 (= (+ (* ULTIMATE.start_main_~x~0 ULTIMATE.start_main_~u~0) (* ULTIMATE.start_main_~y~0 ULTIMATE.start_main_~v~0)) (* (* ULTIMATE.start_main_~a~0 2) ULTIMATE.start_main_~b~0)))) (or (and (= 1 ULTIMATE.start___VERIFIER_assert_~cond) .cse0) (and (= ULTIMATE.start_main_~b~0 ULTIMATE.start_main_~u~0) (exists ((|v_ULTIMATE.start_main_#t~ret0_8| Int)) (let ((.cse1 (mod |v_ULTIMATE.start_main_#t~ret0_8| 4294967296))) (and (= .cse1 ULTIMATE.start_main_~a~0) (<= .cse1 2147483647)))) (<= 1 ULTIMATE.start_main_~a~0) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~x~0) (<= 1 ULTIMATE.start_main_~b~0) .cse0 (exists ((|v_ULTIMATE.start_main_#t~ret1_9| Int)) (let ((.cse2 (mod |v_ULTIMATE.start_main_#t~ret1_9| 4294967296))) (and (<= .cse2 2147483647) (= ULTIMATE.start_main_~b~0 .cse2)))) (= ULTIMATE.start_main_~a~0 ULTIMATE.start_main_~v~0)))) [2019-11-23 22:18:28,998 INFO L447 ceAbstractionStarter]: At program point L7-5(lines 6 12) the Hoare annotation is: true [2019-11-23 22:18:28,998 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:18:28,998 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:18:28,998 INFO L444 ceAbstractionStarter]: For program point L30-2(lines 30 43) no Hoare annotation was computed. [2019-11-23 22:18:28,999 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-11-23 22:18:28,999 INFO L447 ceAbstractionStarter]: At program point L49(lines 14 50) the Hoare annotation is: true [2019-11-23 22:18:28,999 INFO L444 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:28,999 INFO L444 ceAbstractionStarter]: For program point L8-1(lines 8 9) no Hoare annotation was computed. [2019-11-23 22:18:29,014 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,015 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,015 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-23 22:18:29,015 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-23 22:18:29,018 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,018 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-23 22:18:29,019 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-23 22:18:29,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:18:29 BoogieIcfgContainer [2019-11-23 22:18:29,023 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:18:29,025 INFO L168 Benchmark]: Toolchain (without parser) took 34697.24 ms. Allocated memory was 147.3 MB in the beginning and 266.3 MB in the end (delta: 119.0 MB). Free memory was 105.7 MB in the beginning and 206.0 MB in the end (delta: -100.3 MB). Peak memory consumption was 122.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:29,025 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 147.3 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-23 22:18:29,026 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.82 ms. Allocated memory is still 147.3 MB. Free memory was 105.5 MB in the beginning and 95.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:29,027 INFO L168 Benchmark]: Boogie Procedure Inliner took 111.64 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 95.8 MB in the beginning and 183.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:29,028 INFO L168 Benchmark]: Boogie Preprocessor took 20.19 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 181.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:29,029 INFO L168 Benchmark]: RCFGBuilder took 246.99 ms. Allocated memory is still 204.5 MB. Free memory was 181.6 MB in the beginning and 169.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:29,029 INFO L168 Benchmark]: TraceAbstraction took 34042.80 ms. Allocated memory was 204.5 MB in the beginning and 266.3 MB in the end (delta: 61.9 MB). Free memory was 169.6 MB in the beginning and 206.0 MB in the end (delta: -36.4 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:18:29,033 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 147.3 MB. Free memory was 123.6 MB in the beginning and 123.4 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.82 ms. Allocated memory is still 147.3 MB. Free memory was 105.5 MB in the beginning and 95.8 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 111.64 ms. Allocated memory was 147.3 MB in the beginning and 204.5 MB in the end (delta: 57.1 MB). Free memory was 95.8 MB in the beginning and 183.2 MB in the end (delta: -87.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 20.19 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 181.6 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 246.99 ms. Allocated memory is still 204.5 MB. Free memory was 181.6 MB in the beginning and 169.6 MB in the end (delta: 11.9 MB). Peak memory consumption was 11.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 34042.80 ms. Allocated memory was 204.5 MB in the beginning and 266.3 MB in the end (delta: 61.9 MB). Free memory was 169.6 MB in the beginning and 206.0 MB in the end (delta: -36.4 MB). Peak memory consumption was 129.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - PositiveResult [Line: 9]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold - InvariantResult [Line: 33]: Loop Invariant Derived loop invariant: 1 == cond && x * u + y * v == a * 2 * b - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 30]: Loop Invariant [2019-11-23 22:18:29,043 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-23 22:18:29,044 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-23 22:18:29,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret0_8,QUANTIFIED] [2019-11-23 22:18:29,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] [2019-11-23 22:18:29,045 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[v_ULTIMATE.start_main_#t~ret1_9,QUANTIFIED] Derived loop invariant: (1 == cond && x * u + y * v == a * 2 * b) || (((((((b == u && (\exists v_ULTIMATE.start_main_#t~ret0_8 : int :: v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 == a && v_ULTIMATE.start_main_#t~ret0_8 % 4294967296 <= 2147483647)) && 1 <= a) && a == x) && 1 <= b) && x * u + y * v == a * 2 * b) && (\exists v_ULTIMATE.start_main_#t~ret1_9 : int :: v_ULTIMATE.start_main_#t~ret1_9 % 4294967296 <= 2147483647 && b == v_ULTIMATE.start_main_#t~ret1_9 % 4294967296)) && a == v) - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 15 locations, 2 error locations. Result: SAFE, OverallTime: 33.9s, OverallIterations: 10, TraceHistogramMax: 4, AutomataDifference: 6.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 4.5s, HoareTripleCheckerStatistics: 53 SDtfs, 107 SDslu, 171 SDs, 0 SdLazy, 461 SolverSat, 106 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 128 GetRequests, 56 SyntacticMatches, 9 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 24.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=8, 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, 10 MinimizatonAttempts, 51 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 18 NumberOfFragments, 90 HoareAnnotationTreeSize, 4 FomulaSimplifications, 6267 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 4 FomulaSimplificationsInter, 195 FormulaSimplificationTreeSizeReductionInter, 4.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 20.1s InterpolantComputationTime, 116 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 17 NumberOfCheckSat, 106 ConstructedInterpolants, 68 QuantifiedInterpolants, 44895 SizeOfPredicates, 95 NumberOfNonLiveVariables, 421 ConjunctsInSsa, 255 ConjunctsInUnsatCore, 10 InterpolantComputations, 1 PerfectInterpolantSequences, 35/90 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...