java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 23:00:35,055 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 23:00:35,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 23:00:35,070 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 23:00:35,070 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 23:00:35,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 23:00:35,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 23:00:35,075 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 23:00:35,077 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 23:00:35,078 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 23:00:35,079 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 23:00:35,080 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 23:00:35,080 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 23:00:35,081 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 23:00:35,082 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 23:00:35,084 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 23:00:35,084 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 23:00:35,085 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 23:00:35,087 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 23:00:35,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 23:00:35,091 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 23:00:35,092 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 23:00:35,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 23:00:35,094 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 23:00:35,096 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 23:00:35,097 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 23:00:35,097 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 23:00:35,098 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 23:00:35,098 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 23:00:35,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 23:00:35,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 23:00:35,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 23:00:35,101 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 23:00:35,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 23:00:35,103 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 23:00:35,103 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 23:00:35,104 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 23:00:35,104 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 23:00:35,104 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 23:00:35,105 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 23:00:35,106 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 23:00:35,107 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-10-13 23:00:35,122 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 23:00:35,122 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 23:00:35,124 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 23:00:35,124 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 23:00:35,124 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 23:00:35,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 23:00:35,125 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 23:00:35,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 23:00:35,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 23:00:35,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 23:00:35,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 23:00:35,126 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 23:00:35,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 23:00:35,126 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 23:00:35,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 23:00:35,126 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 23:00:35,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 23:00:35,127 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 23:00:35,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 23:00:35,127 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 23:00:35,127 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 23:00:35,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:00:35,128 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 23:00:35,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 23:00:35,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 23:00:35,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 23:00:35,129 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 23:00:35,129 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 23:00:35,129 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 23:00:35,406 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 23:00:35,420 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 23:00:35,423 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 23:00:35,425 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 23:00:35,426 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 23:00:35,426 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2019-10-13 23:00:35,508 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271fd5681/99281534b4ff46669d65a5dea9545756/FLAG09c975d46 [2019-10-13 23:00:35,997 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 23:00:35,998 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat2.c [2019-10-13 23:00:36,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271fd5681/99281534b4ff46669d65a5dea9545756/FLAG09c975d46 [2019-10-13 23:00:36,442 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/271fd5681/99281534b4ff46669d65a5dea9545756 [2019-10-13 23:00:36,450 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 23:00:36,452 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 23:00:36,453 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:36,453 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 23:00:36,456 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 23:00:36,457 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,460 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ec303f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36, skipping insertion in model container [2019-10-13 23:00:36,460 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,468 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 23:00:36,485 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 23:00:36,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:36,650 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 23:00:36,669 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 23:00:36,684 INFO L192 MainTranslator]: Completed translation [2019-10-13 23:00:36,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36 WrapperNode [2019-10-13 23:00:36,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 23:00:36,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 23:00:36,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 23:00:36,685 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 23:00:36,791 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,791 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,797 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,798 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,804 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,809 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,810 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... [2019-10-13 23:00:36,812 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 23:00:36,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 23:00:36,813 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 23:00:36,813 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 23:00:36,814 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 23:00:36,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 23:00:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 23:00:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2019-10-13 23:00:36,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 23:00:36,868 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 23:00:36,869 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2019-10-13 23:00:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assume [2019-10-13 23:00:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2019-10-13 23:00:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 23:00:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 23:00:36,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 23:00:37,092 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 23:00:37,092 INFO L284 CfgBuilder]: Removed 1 assume(true) statements. [2019-10-13 23:00:37,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:37 BoogieIcfgContainer [2019-10-13 23:00:37,094 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 23:00:37,095 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 23:00:37,095 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 23:00:37,098 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 23:00:37,098 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:00:36" (1/3) ... [2019-10-13 23:00:37,099 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe1b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:37, skipping insertion in model container [2019-10-13 23:00:37,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:00:36" (2/3) ... [2019-10-13 23:00:37,100 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bfe1b8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:00:37, skipping insertion in model container [2019-10-13 23:00:37,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:00:37" (3/3) ... [2019-10-13 23:00:37,102 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2019-10-13 23:00:37,112 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 23:00:37,120 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 23:00:37,132 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 23:00:37,165 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 23:00:37,165 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 23:00:37,166 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 23:00:37,166 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 23:00:37,166 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 23:00:37,166 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 23:00:37,167 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 23:00:37,167 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 23:00:37,194 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2019-10-13 23:00:37,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:00:37,202 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:37,203 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:37,206 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:37,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:37,213 INFO L82 PathProgramCache]: Analyzing trace with hash -835862760, now seen corresponding path program 1 times [2019-10-13 23:00:37,225 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:37,226 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128382975] [2019-10-13 23:00:37,226 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:37,227 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:37,227 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:37,306 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:37,307 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [645741632] [2019-10-13 23:00:37,308 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:37,343 INFO L256 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 23:00:37,349 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:37,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:37,364 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:37,380 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:37,380 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128382975] [2019-10-13 23:00:37,381 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:00:37,381 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [645741632] [2019-10-13 23:00:37,382 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:37,382 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-10-13 23:00:37,382 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1465653405] [2019-10-13 23:00:37,386 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 23:00:37,387 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:37,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 23:00:37,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:00:37,401 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2019-10-13 23:00:37,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:37,425 INFO L93 Difference]: Finished difference Result 33 states and 41 transitions. [2019-10-13 23:00:37,426 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 23:00:37,427 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2019-10-13 23:00:37,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:37,437 INFO L225 Difference]: With dead ends: 33 [2019-10-13 23:00:37,438 INFO L226 Difference]: Without dead ends: 15 [2019-10-13 23:00:37,442 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 23:00:37,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2019-10-13 23:00:37,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2019-10-13 23:00:37,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2019-10-13 23:00:37,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2019-10-13 23:00:37,487 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2019-10-13 23:00:37,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:37,488 INFO L462 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2019-10-13 23:00:37,488 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 23:00:37,488 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2019-10-13 23:00:37,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-10-13 23:00:37,489 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:37,489 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:37,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:37,694 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:37,695 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:37,696 INFO L82 PathProgramCache]: Analyzing trace with hash -871939661, now seen corresponding path program 1 times [2019-10-13 23:00:37,696 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:37,697 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962560274] [2019-10-13 23:00:37,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:37,697 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:37,698 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:37,701 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:37,702 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [79257086] [2019-10-13 23:00:37,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:37,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:37,731 WARN L254 TraceCheckSpWp]: Trace formula consists of 28 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 23:00:37,733 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:37,949 WARN L191 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 34 DAG size of output: 25 [2019-10-13 23:00:37,964 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:40,459 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:40,459 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:40,609 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:40,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962560274] [2019-10-13 23:00:40,610 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:00:40,610 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79257086] [2019-10-13 23:00:40,611 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-10-13 23:00:40,611 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-10-13 23:00:40,611 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968589515] [2019-10-13 23:00:40,613 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-13 23:00:40,613 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:40,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-13 23:00:40,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-10-13 23:00:40,614 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand 8 states. [2019-10-13 23:00:42,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:42,745 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2019-10-13 23:00:42,747 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-13 23:00:42,747 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-10-13 23:00:42,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:42,749 INFO L225 Difference]: With dead ends: 25 [2019-10-13 23:00:42,749 INFO L226 Difference]: Without dead ends: 23 [2019-10-13 23:00:42,750 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2019-10-13 23:00:42,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2019-10-13 23:00:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2019-10-13 23:00:42,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2019-10-13 23:00:42,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 22 transitions. [2019-10-13 23:00:42,758 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 22 transitions. Word has length 10 [2019-10-13 23:00:42,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:42,758 INFO L462 AbstractCegarLoop]: Abstraction has 21 states and 22 transitions. [2019-10-13 23:00:42,759 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-13 23:00:42,759 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 22 transitions. [2019-10-13 23:00:42,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-13 23:00:42,759 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 23:00:42,760 INFO L380 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 23:00:42,963 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:42,964 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 23:00:42,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 23:00:42,964 INFO L82 PathProgramCache]: Analyzing trace with hash 1067575333, now seen corresponding path program 1 times [2019-10-13 23:00:42,964 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 23:00:42,965 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1445885795] [2019-10-13 23:00:42,965 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:42,966 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 23:00:42,966 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 23:00:42,977 ERROR L273 tionRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2019-10-13 23:00:42,977 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1219772756] [2019-10-13 23:00:42,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:43,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 23:00:43,003 INFO L256 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 14 conjunts are in the unsatisfiable core [2019-10-13 23:00:43,005 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 23:00:43,122 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:43,168 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:43,168 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 23:00:43,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:43,310 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-13 23:00:43,356 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 23:00:43,356 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1445885795] [2019-10-13 23:00:43,356 INFO L337 tionRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2019-10-13 23:00:43,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219772756] [2019-10-13 23:00:43,357 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1267910926] [2019-10-13 23:00:43,399 INFO L162 IcfgInterpreter]: Started Sifa with 15 locations of interest [2019-10-13 23:00:43,399 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 23:00:43,408 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 23:00:43,428 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 23:00:43,428 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 23:00:43,486 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 1 for LOIs [2019-10-13 23:00:43,796 INFO L199 IcfgInterpreter]: Interpreting procedure __VERIFIER_assert with input of size 9 for LOIs [2019-10-13 23:00:43,862 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.init with input of size 1 for LOIs [2019-10-13 23:00:43,865 INFO L183 IcfgInterpreter]: Interpretation finished [2019-10-13 23:00:43,865 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-10-13 23:00:43,866 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 132#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:43,866 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initFINAL satisfy 136#true [2019-10-13 23:00:43,866 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertEXIT satisfy 122#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:00:43,867 INFO L193 IcfgInterpreter]: Reachable states at location L28-2 satisfy 98#(and (= main_~r~0 0) (<= main_~v~0 1) (= main_~v~0 1) (<= 1 main_~v~0) (<= main_~r~0 0) (<= 0 main_~r~0)) [2019-10-13 23:00:43,867 INFO L193 IcfgInterpreter]: Reachable states at location L-1 satisfy 23#true [2019-10-13 23:00:43,867 INFO L193 IcfgInterpreter]: Reachable states at location mainENTRY satisfy 33#true [2019-10-13 23:00:43,867 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.initEXIT satisfy 141#true [2019-10-13 23:00:43,868 INFO L193 IcfgInterpreter]: Reachable states at location L7 satisfy 112#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (or (and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (<= 0 __VERIFIER_assert_~cond)) (and (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1)))) [2019-10-13 23:00:43,868 INFO L193 IcfgInterpreter]: Reachable states at location ULTIMATE.startENTRY satisfy 6#true [2019-10-13 23:00:43,868 INFO L193 IcfgInterpreter]: Reachable states at location L29-1 satisfy 71#(and (<= main_~v~0 1) (= main_~v~0 1) (<= 1 main_~v~0)) [2019-10-13 23:00:43,868 INFO L193 IcfgInterpreter]: Reachable states at location L29 satisfy 43#(and (<= main_~v~0 1) (not (= (ite (= 1 (ite (and (not (= (mod main_~A~0 2) 0)) (< main_~A~0 0)) (+ (mod main_~A~0 2) (- 2)) (mod main_~A~0 2))) 1 0) 0)) (= main_~v~0 1) (not (= 0 (ite (< (* (+ main_~R~0 (- 1)) (+ main_~R~0 (- 1))) main_~A~0) 1 0))) (<= 1 main_~v~0) (= main_~r~0 (+ (* main_~A~0 (- 1)) (* main_~R~0 main_~R~0))) (= main_~u~0 (+ (* main_~R~0 2) 1))) [2019-10-13 23:00:43,869 INFO L193 IcfgInterpreter]: Reachable states at location L7-2 satisfy 117#(and (or (and (= |__VERIFIER_assert_#in~cond| 0) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 1) (not (= 0 __VERIFIER_assert_~cond)) (<= 0 |__VERIFIER_assert_#in~cond|) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 1 __VERIFIER_assert_~cond) (<= 1 |__VERIFIER_assert_#in~cond|) (<= __VERIFIER_assert_~cond 1) (<= |__VERIFIER_assert_#in~cond| 1)) [2019-10-13 23:00:43,869 INFO L193 IcfgInterpreter]: Reachable states at location __VERIFIER_assertENTRY satisfy 107#(and (or (<= 1 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 0)) (or (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)) (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1)))) [2019-10-13 23:00:43,869 INFO L193 IcfgInterpreter]: Reachable states at location L32-2 satisfy 38#(and (<= main_~v~0 1) (not (= (ite (= 1 (ite (and (not (= (mod main_~A~0 2) 0)) (< main_~A~0 0)) (+ (mod main_~A~0 2) (- 2)) (mod main_~A~0 2))) 1 0) 0)) (= main_~v~0 1) (not (= 0 (ite (< (* (+ main_~R~0 (- 1)) (+ main_~R~0 (- 1))) main_~A~0) 1 0))) (<= 1 main_~v~0) (= main_~r~0 (+ (* main_~A~0 (- 1)) (* main_~R~0 main_~R~0))) (= main_~u~0 (+ (* main_~R~0 2) 1))) [2019-10-13 23:00:43,870 INFO L193 IcfgInterpreter]: Reachable states at location L8 satisfy 127#(and (<= __VERIFIER_assert_~cond 0) (<= |__VERIFIER_assert_#in~cond| 0) (or (and (= |__VERIFIER_assert_#in~cond| 1) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond)) (and (= |__VERIFIER_assert_#in~cond| 0) (<= 0 |__VERIFIER_assert_#in~cond|) (<= |__VERIFIER_assert_#in~cond| 1) (= 0 __VERIFIER_assert_~cond) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond))) (<= 0 __VERIFIER_assert_~cond)) [2019-10-13 23:00:44,185 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 3 imperfect interpolant sequences. [2019-10-13 23:00:44,185 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 8] total 20 [2019-10-13 23:00:44,185 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649261331] [2019-10-13 23:00:44,187 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2019-10-13 23:00:44,187 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 23:00:44,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2019-10-13 23:00:44,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=311, Unknown=0, NotChecked=0, Total=380 [2019-10-13 23:00:44,191 INFO L87 Difference]: Start difference. First operand 21 states and 22 transitions. Second operand 20 states. [2019-10-13 23:00:46,381 WARN L191 SmtUtils]: Spent 2.09 s on a formula simplification. DAG size of input: 47 DAG size of output: 37 [2019-10-13 23:00:46,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 23:00:46,487 INFO L93 Difference]: Finished difference Result 23 states and 25 transitions. [2019-10-13 23:00:46,487 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-13 23:00:46,488 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 16 [2019-10-13 23:00:46,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 23:00:46,488 INFO L225 Difference]: With dead ends: 23 [2019-10-13 23:00:46,488 INFO L226 Difference]: Without dead ends: 0 [2019-10-13 23:00:46,489 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 106 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2019-10-13 23:00:46,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-13 23:00:46,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-13 23:00:46,490 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-13 23:00:46,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-13 23:00:46,490 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2019-10-13 23:00:46,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 23:00:46,491 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-13 23:00:46,491 INFO L463 AbstractCegarLoop]: Interpolant automaton has 20 states. [2019-10-13 23:00:46,491 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-13 23:00:46,491 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-13 23:00:46,694 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 23:00:46,699 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-13 23:00:48,760 WARN L191 SmtUtils]: Spent 2.04 s on a formula simplification. DAG size of input: 60 DAG size of output: 22 [2019-10-13 23:00:49,274 WARN L191 SmtUtils]: Spent 511.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 22 [2019-10-13 23:00:49,333 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2019-10-13 23:00:49,333 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:00:49,333 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-13 23:00:49,333 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-13 23:00:49,333 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-13 23:00:49,334 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-13 23:00:49,334 INFO L439 ceAbstractionStarter]: At program point L29(line 29) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)) (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)))) [2019-10-13 23:00:49,334 INFO L443 ceAbstractionStarter]: For program point L29-1(lines 28 39) no Hoare annotation was computed. [2019-10-13 23:00:49,334 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 14 44) no Hoare annotation was computed. [2019-10-13 23:00:49,334 INFO L443 ceAbstractionStarter]: For program point L42(line 42) no Hoare annotation was computed. [2019-10-13 23:00:49,335 INFO L439 ceAbstractionStarter]: At program point L32-2(lines 28 39) the Hoare annotation is: (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ (* main_~v~0 main_~v~0) (* 4 main_~A~0) (* 4 main_~r~0) (* 2 main_~u~0)) (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)))) [2019-10-13 23:00:49,335 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 14 44) the Hoare annotation is: true [2019-10-13 23:00:49,335 INFO L439 ceAbstractionStarter]: At program point L28-2(lines 28 39) the Hoare annotation is: (let ((.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* 4 main_~A~0)) (.cse3 (* 2 main_~u~0)) (.cse4 (+ (* 2 main_~v~0) (* main_~u~0 main_~u~0)))) (and (exists ((main_~R~0 Int)) (< (let ((.cse0 (+ main_~R~0 (- 1)))) (* .cse0 .cse0)) main_~A~0)) (= (+ .cse1 .cse2 .cse3) .cse4) (= (+ .cse1 .cse2 (* 4 main_~r~0) .cse3) .cse4))) [2019-10-13 23:00:49,335 INFO L446 ceAbstractionStarter]: At program point __VERIFIER_assertENTRY(lines 6 12) the Hoare annotation is: true [2019-10-13 23:00:49,336 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertEXIT(lines 6 12) no Hoare annotation was computed. [2019-10-13 23:00:49,336 INFO L443 ceAbstractionStarter]: For program point L8(lines 8 9) no Hoare annotation was computed. [2019-10-13 23:00:49,336 INFO L443 ceAbstractionStarter]: For program point L7(lines 7 10) no Hoare annotation was computed. [2019-10-13 23:00:49,336 INFO L443 ceAbstractionStarter]: For program point L7-2(lines 6 12) no Hoare annotation was computed. [2019-10-13 23:00:49,336 INFO L443 ceAbstractionStarter]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2019-10-13 23:00:49,343 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-13 23:00:49,345 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-13 23:00:49,353 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-13 23:00:49,353 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-13 23:00:49,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 13.10 11:00:49 BoogieIcfgContainer [2019-10-13 23:00:49,359 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-13 23:00:49,362 INFO L168 Benchmark]: Toolchain (without parser) took 12909.50 ms. Allocated memory was 145.8 MB in the beginning and 234.4 MB in the end (delta: 88.6 MB). Free memory was 102.6 MB in the beginning and 102.1 MB in the end (delta: 582.3 kB). Peak memory consumption was 89.2 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:49,363 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-13 23:00:49,364 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.20 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 92.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:49,365 INFO L168 Benchmark]: Boogie Preprocessor took 127.03 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 92.6 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:49,366 INFO L168 Benchmark]: RCFGBuilder took 281.17 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 167.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:49,367 INFO L168 Benchmark]: TraceAbstraction took 12264.78 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 167.3 MB in the beginning and 102.1 MB in the end (delta: 65.2 MB). Peak memory consumption was 97.2 MB. Max. memory is 7.1 GB. [2019-10-13 23:00:49,371 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.8 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 232.20 ms. Allocated memory is still 145.8 MB. Free memory was 102.2 MB in the beginning and 92.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.03 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 92.6 MB in the beginning and 180.8 MB in the end (delta: -88.2 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 281.17 ms. Allocated memory is still 202.4 MB. Free memory was 180.8 MB in the beginning and 167.3 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 12264.78 ms. Allocated memory was 202.4 MB in the beginning and 234.4 MB in the end (delta: 32.0 MB). Free memory was 167.3 MB in the beginning and 102.1 MB in the end (delta: 65.2 MB). Peak memory consumption was 97.2 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[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] - GenericResult: Unfinished Backtranslation Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 28]: Loop Invariant [2019-10-13 23:00:49,382 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-13 23:00:49,382 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-13 23:00:49,382 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] [2019-10-13 23:00:49,383 WARN L417 cessorBacktranslator]: Identifier is quantified, using identity as back-translation of IdentifierExpression[main_~R~0,QUANTIFIED] Derived loop invariant: (\exists main_~R~0 : int :: (main_~R~0 + -1) * (main_~R~0 + -1) < A) && v * v + 4 * A + 4 * r + 2 * u == 2 * v + u * u - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Result: SAFE, OverallTime: 12.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 2.6s, HoareTripleCheckerStatistics: 41 SDtfs, 24 SDslu, 128 SDs, 0 SdLazy, 87 SolverSat, 14 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 88 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 3.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 13 PreInvPairs, 19 NumberOfFragments, 119 HoareAnnotationTreeSize, 13 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 285 FormulaSimplificationTreeSizeReductionInter, 2.6s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 3.2s InterpolantComputationTime, 36 NumberOfCodeBlocks, 36 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 66 ConstructedInterpolants, 4 QuantifiedInterpolants, 4347 SizeOfPredicates, 11 NumberOfNonLiveVariables, 95 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 2/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: OVERALL_TIME[ms]: 471, ICFG_INTERPRETER_ENTERED_PROCEDURES: 4, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 28, DAG_INTERPRETER_EARLY_EXITS: 0, TOOLS_POST_APPLICATIONS: 14, TOOLS_POST_TIME[ms]: 2, TOOLS_POST_CALL_APPLICATIONS: 8, TOOLS_POST_CALL_TIME[ms]: 83, TOOLS_POST_RETURN_APPLICATIONS: 4, TOOLS_POST_RETURN_TIME[ms]: 5, TOOLS_QUANTIFIERELIM_APPLICATIONS: 26, TOOLS_QUANTIFIERELIM_TIME[ms]: 83, TOOLS_QUANTIFIERELIM_MAX_TIME[ms]: 33, FLUID_QUERY_TIME[ms]: 4, FLUID_QUERIES: 28, FLUID_YES_ANSWERS: 0, DOMAIN_JOIN_APPLICATIONS: 24, DOMAIN_JOIN_TIME[ms]: 273, DOMAIN_ALPHA_APPLICATIONS: 0, DOMAIN_ALPHA_TIME[ms]: 0, DOMAIN_WIDEN_APPLICATIONS: 0, DOMAIN_WIDEN_TIME[ms]: 0, DOMAIN_ISSUBSETEQ_APPLICATIONS: 0, DOMAIN_ISSUBSETEQ_TIME[ms]: 0, DOMAIN_ISBOTTOM_APPLICATIONS: 5, DOMAIN_ISBOTTOM_TIME[ms]: 26, LOOP_SUMMARIZER_APPLICATIONS: 0, LOOP_SUMMARIZER_CACHE_MISSES: 0, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 0, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 0, CALL_SUMMARIZER_APPLICATIONS: 4, CALL_SUMMARIZER_CACHE_MISSES: 2, CALL_SUMMARIZER_OVERALL_TIME[ms]: 19, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 18, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 5, PATH_EXPR_TIME[ms]: 3, REGEX_TO_DAG_TIME[ms]: 3, DAG_COMPRESSION_TIME[ms]: 11, DAG_COMPRESSION_PROCESSED_NODES: 81, DAG_COMPRESSION_RETAINED_NODES: 48, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...