/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/nla-digbench/fermat2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:53:14,072 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:53:14,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:53:14,093 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:53:14,094 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:53:14,096 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:53:14,097 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:53:14,109 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:53:14,112 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:53:14,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:53:14,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:53:14,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:53:14,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:53:14,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:53:14,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:53:14,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:53:14,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:53:14,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:53:14,129 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:53:14,133 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:53:14,138 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:53:14,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:53:14,143 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:53:14,144 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:53:14,146 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:53:14,156 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:53:14,157 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:53:14,158 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:53:14,159 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 [2020-07-20 14:53:14,195 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:53:14,195 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:53:14,196 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:53:14,196 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:53:14,196 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:53:14,197 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:53:14,197 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:53:14,197 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:53:14,197 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:53:14,197 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:53:14,198 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:53:14,198 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:53:14,198 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:53:14,198 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:53:14,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:53:14,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:53:14,199 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:53:14,199 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:53:14,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:53:14,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:53:14,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:53:14,200 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:53:14,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:53:14,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:53:14,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:53:14,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:53:14,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:14,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:53:14,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:53:14,201 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:53:14,498 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:53:14,516 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:53:14,519 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:53:14,523 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:53:14,523 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:53:14,525 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/fermat2.c [2020-07-20 14:53:14,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff9cff40/1635c481af514c73b864695950a0fbc4/FLAGd52cdb1bc [2020-07-20 14:53:15,028 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:53:15,028 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/fermat2.c [2020-07-20 14:53:15,035 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff9cff40/1635c481af514c73b864695950a0fbc4/FLAGd52cdb1bc [2020-07-20 14:53:15,447 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6ff9cff40/1635c481af514c73b864695950a0fbc4 [2020-07-20 14:53:15,455 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:53:15,457 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:53:15,458 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:53:15,458 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:53:15,461 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:53:15,463 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,465 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39a41f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15, skipping insertion in model container [2020-07-20 14:53:15,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,473 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:53:15,492 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:53:15,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:53:15,703 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:53:15,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:53:15,739 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:53:15,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15 WrapperNode [2020-07-20 14:53:15,740 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:53:15,740 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:53:15,741 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:53:15,741 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:53:15,756 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,756 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,862 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,863 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,873 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,879 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (1/1) ... [2020-07-20 14:53:15,886 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:53:15,888 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:53:15,888 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:53:15,888 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:53:15,889 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (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 [2020-07-20 14:53:15,955 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:53:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:53:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-20 14:53:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 14:53:15,956 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:53:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:53:15,956 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2020-07-20 14:53:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-20 14:53:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-20 14:53:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 14:53:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:53:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:53:15,957 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:53:16,147 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:53:16,148 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 14:53:16,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:53:16 BoogieIcfgContainer [2020-07-20 14:53:16,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:53:16,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:53:16,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:53:16,161 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:53:16,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:53:15" (1/3) ... [2020-07-20 14:53:16,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fe3edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:53:16, skipping insertion in model container [2020-07-20 14:53:16,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:53:15" (2/3) ... [2020-07-20 14:53:16,163 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12fe3edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:53:16, skipping insertion in model container [2020-07-20 14:53:16,163 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:53:16" (3/3) ... [2020-07-20 14:53:16,168 INFO L109 eAbstractionObserver]: Analyzing ICFG fermat2.c [2020-07-20 14:53:16,191 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:53:16,207 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:53:16,230 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:53:16,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:53:16,261 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:53:16,261 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:53:16,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:53:16,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:53:16,262 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:53:16,262 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:53:16,262 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:53:16,285 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-07-20 14:53:16,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 14:53:16,291 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:53:16,292 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:53:16,293 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:53:16,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:53:16,299 INFO L82 PathProgramCache]: Analyzing trace with hash -849943384, now seen corresponding path program 1 times [2020-07-20 14:53:16,308 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:53:16,309 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634146023] [2020-07-20 14:53:16,309 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:16,509 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:53:16,509 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:53:16,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 14:53:16,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:53:16,541 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-20 14:53:16,541 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:53:16,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634146023] [2020-07-20 14:53:16,543 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:53:16,543 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 14:53:16,544 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667692349] [2020-07-20 14:53:16,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 14:53:16,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:53:16,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 14:53:16,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:53:16,562 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 2 states. [2020-07-20 14:53:16,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:53:16,584 INFO L93 Difference]: Finished difference Result 50 states and 67 transitions. [2020-07-20 14:53:16,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 14:53:16,585 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 21 [2020-07-20 14:53:16,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:53:16,592 INFO L225 Difference]: With dead ends: 50 [2020-07-20 14:53:16,593 INFO L226 Difference]: Without dead ends: 23 [2020-07-20 14:53:16,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 14:53:16,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-07-20 14:53:16,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-07-20 14:53:16,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-20 14:53:16,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-07-20 14:53:16,636 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 21 [2020-07-20 14:53:16,637 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:53:16,637 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-07-20 14:53:16,637 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 14:53:16,637 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-07-20 14:53:16,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-20 14:53:16,639 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:53:16,640 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:53:16,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:16,844 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:53:16,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:53:16,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1193991140, now seen corresponding path program 1 times [2020-07-20 14:53:16,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:53:16,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255174471] [2020-07-20 14:53:16,846 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:53:16,913 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:53:16,914 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:53:16,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-20 14:53:16,918 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:53:16,997 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:53:29,850 WARN L193 SmtUtils]: Spent 8.50 s on a formula simplification that was a NOOP. DAG size: 28 [2020-07-20 14:53:29,855 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:53:47,832 WARN L193 SmtUtils]: Spent 10.83 s on a formula simplification that was a NOOP. DAG size: 28 [2020-07-20 14:53:49,884 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:53:58,091 WARN L838 $PredicateComparison]: unable to prove that (exists ((v_main_~u~0_BEFORE_CALL_1 Int)) (and (not (= (+ (* 2 v_main_~u~0_BEFORE_CALL_1) (* 4 (let ((.cse0 (div (+ (* v_main_~u~0_BEFORE_CALL_1 (- 1)) 1) (- 2)))) (* .cse0 .cse0)))) (+ (* v_main_~u~0_BEFORE_CALL_1 v_main_~u~0_BEFORE_CALL_1) 1))) (= 0 (mod (+ v_main_~u~0_BEFORE_CALL_1 1) (- 2))))) is different from false [2020-07-20 14:54:00,113 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_main_~u~0_BEFORE_CALL_1 Int)) (and (not (= (+ (* 2 v_main_~u~0_BEFORE_CALL_1) (* 4 (let ((.cse0 (div (+ (* v_main_~u~0_BEFORE_CALL_1 (- 1)) 1) (- 2)))) (* .cse0 .cse0)))) (+ (* v_main_~u~0_BEFORE_CALL_1 v_main_~u~0_BEFORE_CALL_1) 1))) (= 0 (mod (+ v_main_~u~0_BEFORE_CALL_1 1) (- 2))))) is different from true [2020-07-20 14:54:00,118 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 14:54:00,118 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:54:00,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [255174471] [2020-07-20 14:54:00,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:54:00,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 14:54:00,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632134218] [2020-07-20 14:54:00,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-20 14:54:00,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:54:00,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-20 14:54:00,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=13, Unknown=2, NotChecked=6, Total=30 [2020-07-20 14:54:00,122 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-07-20 14:54:34,275 WARN L193 SmtUtils]: Spent 32.80 s on a formula simplification that was a NOOP. DAG size: 34 [2020-07-20 14:54:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:54:43,081 INFO L93 Difference]: Finished difference Result 34 states and 39 transitions. [2020-07-20 14:54:43,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-20 14:54:43,090 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-07-20 14:54:43,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:54:43,092 INFO L225 Difference]: With dead ends: 34 [2020-07-20 14:54:43,092 INFO L226 Difference]: Without dead ends: 32 [2020-07-20 14:54:43,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 58.6s TimeCoverageRelationStatistics Valid=13, Invalid=19, Unknown=2, NotChecked=8, Total=42 [2020-07-20 14:54:43,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-20 14:54:43,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 29. [2020-07-20 14:54:43,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-07-20 14:54:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2020-07-20 14:54:43,111 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 21 [2020-07-20 14:54:43,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:54:43,113 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2020-07-20 14:54:43,113 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-20 14:54:43,113 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2020-07-20 14:54:43,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-20 14:54:43,114 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:54:43,115 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:54:43,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:43,316 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:54:43,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:54:43,318 INFO L82 PathProgramCache]: Analyzing trace with hash -1415100442, now seen corresponding path program 1 times [2020-07-20 14:54:43,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:54:43,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1390900028] [2020-07-20 14:54:43,319 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:43,365 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:54:43,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:54:43,366 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 10 conjunts are in the unsatisfiable core [2020-07-20 14:54:43,369 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:54:43,480 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-20 14:54:43,820 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 14:54:43,820 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:54:43,913 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:54:44,087 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 14:54:44,088 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:54:44,127 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:54:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 14:54:44,234 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1390900028] [2020-07-20 14:54:44,234 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:54:44,234 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2020-07-20 14:54:44,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100083997] [2020-07-20 14:54:44,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-20 14:54:44,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:54:44,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-20 14:54:44,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-07-20 14:54:44,236 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 10 states. [2020-07-20 14:54:50,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:54:50,731 INFO L93 Difference]: Finished difference Result 35 states and 37 transitions. [2020-07-20 14:54:50,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 14:54:50,733 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-07-20 14:54:50,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:54:50,737 INFO L225 Difference]: With dead ends: 35 [2020-07-20 14:54:50,737 INFO L226 Difference]: Without dead ends: 28 [2020-07-20 14:54:50,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-07-20 14:54:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-07-20 14:54:50,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-07-20 14:54:50,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 14:54:50,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-20 14:54:50,755 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 27 [2020-07-20 14:54:50,755 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:54:50,755 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-20 14:54:50,755 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-20 14:54:50,756 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-20 14:54:50,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 14:54:50,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:54:50,757 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:54:50,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:50,971 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:54:50,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:54:50,971 INFO L82 PathProgramCache]: Analyzing trace with hash -1831429119, now seen corresponding path program 1 times [2020-07-20 14:54:50,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:54:50,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858489174] [2020-07-20 14:54:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:54:51,013 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:54:51,014 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:54:51,015 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 14:54:51,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:55:01,772 WARN L193 SmtUtils]: Spent 8.44 s on a formula simplification that was a NOOP. DAG size: 30 [2020-07-20 14:55:06,217 WARN L193 SmtUtils]: Spent 4.23 s on a formula simplification that was a NOOP. DAG size: 28 [2020-07-20 14:55:06,231 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:55:06,421 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 14:55:06,421 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:55:06,581 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:55:11,397 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 14:55:11,397 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:55:11,408 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:55:11,557 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 14:55:11,558 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858489174] [2020-07-20 14:55:11,558 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:55:11,558 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2020-07-20 14:55:11,559 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900630445] [2020-07-20 14:55:11,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 14:55:11,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:55:11,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 14:55:11,560 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=82, Unknown=2, NotChecked=0, Total=110 [2020-07-20 14:55:11,560 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 11 states. [2020-07-20 14:55:35,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:55:35,962 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-07-20 14:55:35,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 14:55:35,971 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-07-20 14:55:35,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:55:35,973 INFO L225 Difference]: With dead ends: 42 [2020-07-20 14:55:35,973 INFO L226 Difference]: Without dead ends: 40 [2020-07-20 14:55:35,974 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 20.3s TimeCoverageRelationStatistics Valid=39, Invalid=115, Unknown=2, NotChecked=0, Total=156 [2020-07-20 14:55:35,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-20 14:55:35,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 28. [2020-07-20 14:55:35,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-07-20 14:55:35,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-07-20 14:55:35,983 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 29 [2020-07-20 14:55:35,983 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:55:35,983 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-07-20 14:55:35,983 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 14:55:35,983 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-07-20 14:55:35,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-20 14:55:35,984 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:55:35,985 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:55:36,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:55:36,201 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:55:36,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:55:36,202 INFO L82 PathProgramCache]: Analyzing trace with hash -1774170817, now seen corresponding path program 1 times [2020-07-20 14:55:36,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:55:36,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [407554825] [2020-07-20 14:55:36,204 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:55:36,249 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 14:55:36,250 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:55:36,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 61 conjuncts, 18 conjunts are in the unsatisfiable core [2020-07-20 14:55:36,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:55:36,386 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2020-07-20 14:55:47,013 WARN L193 SmtUtils]: Spent 8.37 s on a formula simplification that was a NOOP. DAG size: 30 [2020-07-20 14:56:01,905 WARN L193 SmtUtils]: Spent 6.29 s on a formula simplification that was a NOOP. DAG size: 33 [2020-07-20 14:56:01,911 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 14:56:02,204 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 2 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 14:56:02,205 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 14:56:02,435 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:56:07,379 INFO L320 QuantifierPusher]: Applying distributivity to a DISJUNCTION[2, 2, 2, 1] term [2020-07-20 14:56:07,380 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:56:07,390 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 14:56:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-20 14:56:07,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [407554825] [2020-07-20 14:56:07,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 14:56:07,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 11 [2020-07-20 14:56:07,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907905935] [2020-07-20 14:56:07,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 14:56:07,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:56:07,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 14:56:07,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=78, Unknown=6, NotChecked=0, Total=110 [2020-07-20 14:56:07,603 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 11 states. [2020-07-20 14:56:58,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:56:58,348 INFO L93 Difference]: Finished difference Result 42 states and 48 transitions. [2020-07-20 14:56:58,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-20 14:56:58,357 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 29 [2020-07-20 14:56:58,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:56:58,358 INFO L225 Difference]: With dead ends: 42 [2020-07-20 14:56:58,358 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:56:58,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 44 SyntacticMatches, 4 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 31.2s TimeCoverageRelationStatistics Valid=39, Invalid=111, Unknown=6, NotChecked=0, Total=156 [2020-07-20 14:56:58,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:56:58,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:56:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:56:58,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:56:58,360 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-07-20 14:56:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:56:58,360 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:56:58,361 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 14:56:58,361 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:56:58,361 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:56:58,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:56:58,570 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:57:28,590 WARN L193 SmtUtils]: Spent 29.89 s on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-07-20 14:57:28,709 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 18 [2020-07-20 14:57:30,812 WARN L193 SmtUtils]: Spent 2.10 s on a formula simplification. DAG size of input: 35 DAG size of output: 1 [2020-07-20 14:57:58,081 WARN L193 SmtUtils]: Spent 27.27 s on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-07-20 14:57:58,084 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-20 14:57:58,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:57:58,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:57:58,084 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:57:58,084 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:57:58,084 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:57:58,084 INFO L271 CegarLoopResult]: At program point assume_abort_if_notENTRY(lines 6 8) the Hoare annotation is: true [2020-07-20 14:57:58,084 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-07-20 14:57:58,084 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2020-07-20 14:57:58,085 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2020-07-20 14:57:58,085 INFO L264 CegarLoopResult]: At program point L35-2(lines 31 42) the Hoare annotation is: (or (and (= 1 main_~v~0) (= (let ((.cse0 (div (+ (* main_~u~0 (- 1)) 1) (- 2)))) (* .cse0 .cse0)) (+ main_~A~0 main_~r~0)) (= 0 (mod (+ main_~u~0 1) (- 2)))) (= (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2)) (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)))) [2020-07-20 14:57:58,085 INFO L264 CegarLoopResult]: At program point L31-2(lines 31 42) the Hoare annotation is: (let ((.cse0 (+ (* main_~u~0 main_~u~0) (* 2 main_~v~0))) (.cse1 (* main_~v~0 main_~v~0)) (.cse2 (* 2 main_~u~0)) (.cse3 (* 4 main_~A~0))) (and (= .cse0 (+ .cse1 .cse2 .cse3)) (= .cse0 (+ .cse1 .cse2 (* 4 main_~r~0) .cse3)))) [2020-07-20 14:57:58,085 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-07-20 14:57:58,085 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 17 47) no Hoare annotation was computed. [2020-07-20 14:57:58,085 INFO L271 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: true [2020-07-20 14:57:58,085 INFO L271 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-07-20 14:57:58,085 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 17 47) no Hoare annotation was computed. [2020-07-20 14:57:58,086 INFO L264 CegarLoopResult]: At program point L32(line 32) the Hoare annotation is: (or (and (= 1 main_~v~0) (= (let ((.cse0 (div (+ (* main_~u~0 (- 1)) 1) (- 2)))) (* .cse0 .cse0)) (+ main_~A~0 main_~r~0)) (= 0 (mod (+ main_~u~0 1) (- 2)))) (= (+ (* main_~v~0 main_~v~0) (* main_~A~0 4) (* main_~r~0 4) (* main_~u~0 2)) (+ (* main_~v~0 2) (* main_~u~0 main_~u~0)))) [2020-07-20 14:57:58,086 INFO L268 CegarLoopResult]: For program point L32-1(lines 31 42) no Hoare annotation was computed. [2020-07-20 14:57:58,086 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 17 47) the Hoare annotation is: true [2020-07-20 14:57:58,086 INFO L268 CegarLoopResult]: For program point L45(line 45) no Hoare annotation was computed. [2020-07-20 14:57:58,086 INFO L268 CegarLoopResult]: For program point L35(lines 35 41) no Hoare annotation was computed. [2020-07-20 14:57:58,086 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 9 15) the Hoare annotation is: true [2020-07-20 14:57:58,086 INFO L268 CegarLoopResult]: For program point L11(lines 11 12) no Hoare annotation was computed. [2020-07-20 14:57:58,087 INFO L268 CegarLoopResult]: For program point L10(lines 10 13) no Hoare annotation was computed. [2020-07-20 14:57:58,087 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 9 15) no Hoare annotation was computed. [2020-07-20 14:57:58,087 INFO L268 CegarLoopResult]: For program point L10-2(lines 9 15) no Hoare annotation was computed. [2020-07-20 14:57:58,087 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 12) no Hoare annotation was computed. [2020-07-20 14:57:58,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:57:58 BoogieIcfgContainer [2020-07-20 14:57:58,102 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:57:58,104 INFO L168 Benchmark]: Toolchain (without parser) took 282647.65 ms. Allocated memory was 139.5 MB in the beginning and 241.2 MB in the end (delta: 101.7 MB). Free memory was 104.3 MB in the beginning and 165.0 MB in the end (delta: -60.7 MB). Peak memory consumption was 41.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:57:58,105 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-07-20 14:57:58,105 INFO L168 Benchmark]: CACSL2BoogieTranslator took 282.11 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 94.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:57:58,106 INFO L168 Benchmark]: Boogie Preprocessor took 146.03 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 94.2 MB in the beginning and 182.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. [2020-07-20 14:57:58,107 INFO L168 Benchmark]: RCFGBuilder took 263.67 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 169.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:57:58,108 INFO L168 Benchmark]: TraceAbstraction took 281949.22 ms. Allocated memory was 204.5 MB in the beginning and 241.2 MB in the end (delta: 36.7 MB). Free memory was 169.2 MB in the beginning and 165.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:57:58,112 INFO L336 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 139.5 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 282.11 ms. Allocated memory is still 139.5 MB. Free memory was 104.1 MB in the beginning and 94.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 146.03 ms. Allocated memory was 139.5 MB in the beginning and 204.5 MB in the end (delta: 65.0 MB). Free memory was 94.2 MB in the beginning and 182.7 MB in the end (delta: -88.5 MB). Peak memory consumption was 14.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 263.67 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 169.8 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 281949.22 ms. Allocated memory was 204.5 MB in the beginning and 241.2 MB in the end (delta: 36.7 MB). Free memory was 169.2 MB in the beginning and 165.0 MB in the end (delta: 4.1 MB). Peak memory consumption was 40.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 12]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: ((1 == v && (u * -1 + 1) / -2 * ((u * -1 + 1) / -2) == A + r) && 0 == (u + 1) % -2) || v * v + A * 4 + r * 4 + u * 2 == v * 2 + u * u - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 28 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 222.3s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 124.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 59.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 113 SDtfs, 44 SDslu, 379 SDs, 0 SdLazy, 260 SolverSat, 9 SolverUnsat, 40 SolverUnknown, 0 SolverNotchecked, 87.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 215 GetRequests, 167 SyntacticMatches, 10 SemanticMatches, 38 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 110.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred 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, 5 MinimizatonAttempts, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 11 LocationsWithAnnotation, 20 PreInvPairs, 32 NumberOfFragments, 152 HoareAnnotationTreeSize, 20 FomulaSimplifications, 590 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 11 FomulaSimplificationsInter, 339 FormulaSimplificationTreeSizeReductionInter, 59.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 95.9s InterpolantComputationTime, 127 NumberOfCodeBlocks, 118 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 204 ConstructedInterpolants, 3 QuantifiedInterpolants, 33442 SizeOfPredicates, 19 NumberOfNonLiveVariables, 256 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 42/52 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...