/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 DAGSIZE --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 2 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/lu.cmp.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-21 20:19:43,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-21 20:19:43,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-21 20:19:43,252 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-21 20:19:43,252 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-21 20:19:43,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-21 20:19:43,258 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-21 20:19:43,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-21 20:19:43,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-21 20:19:43,278 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-21 20:19:43,280 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-21 20:19:43,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-21 20:19:43,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-21 20:19:43,285 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-21 20:19:43,287 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-21 20:19:43,288 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-21 20:19:43,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-21 20:19:43,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-21 20:19:43,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-21 20:19:43,299 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-21 20:19:43,304 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-21 20:19:43,309 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-21 20:19:43,310 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-21 20:19:43,311 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-21 20:19:43,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-21 20:19:43,326 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-21 20:19:43,327 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-21 20:19:43,329 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-21 20:19:43,330 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 [2020-07-21 20:19:43,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-21 20:19:43,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-21 20:19:43,377 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-21 20:19:43,378 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-21 20:19:43,379 INFO L138 SettingsManager]: * Use SBE=true [2020-07-21 20:19:43,379 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-21 20:19:43,379 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-21 20:19:43,379 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-21 20:19:43,379 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-21 20:19:43,380 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-21 20:19:43,380 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-21 20:19:43,380 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-21 20:19:43,381 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-21 20:19:43,381 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-21 20:19:43,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-21 20:19:43,382 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-21 20:19:43,382 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-21 20:19:43,383 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-21 20:19:43,383 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-21 20:19:43,384 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-21 20:19:43,384 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-21 20:19:43,384 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-21 20:19:43,384 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-21 20:19:43,385 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-21 20:19:43,385 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-21 20:19:43,385 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-21 20:19:43,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:43,385 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-21 20:19:43,385 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-21 20:19:43,386 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 -> DAGSIZE 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 -> 2 [2020-07-21 20:19:43,719 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-21 20:19:43,735 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-21 20:19:43,739 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-21 20:19:43,741 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-21 20:19:43,741 INFO L275 PluginConnector]: CDTParser initialized [2020-07-21 20:19:43,742 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/lu.cmp.c [2020-07-21 20:19:43,821 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c368e1810/0b996fd921ce46fdbec6c524533f9484/FLAG61105b517 [2020-07-21 20:19:44,456 INFO L306 CDTParser]: Found 1 translation units. [2020-07-21 20:19:44,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/lu.cmp.c [2020-07-21 20:19:44,470 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c368e1810/0b996fd921ce46fdbec6c524533f9484/FLAG61105b517 [2020-07-21 20:19:44,721 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c368e1810/0b996fd921ce46fdbec6c524533f9484 [2020-07-21 20:19:44,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-21 20:19:44,740 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-21 20:19:44,741 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-21 20:19:44,742 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-21 20:19:44,747 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-21 20:19:44,749 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:19:44" (1/1) ... [2020-07-21 20:19:44,753 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@74ee1540 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:44, skipping insertion in model container [2020-07-21 20:19:44,754 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 08:19:44" (1/1) ... [2020-07-21 20:19:44,765 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-21 20:19:44,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-21 20:19:45,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:19:45,076 INFO L203 MainTranslator]: Completed pre-run [2020-07-21 20:19:45,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-21 20:19:45,240 INFO L208 MainTranslator]: Completed translation [2020-07-21 20:19:45,241 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45 WrapperNode [2020-07-21 20:19:45,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-21 20:19:45,243 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-21 20:19:45,243 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-21 20:19:45,243 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-21 20:19:45,260 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (1/1) ... [2020-07-21 20:19:45,261 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (1/1) ... [2020-07-21 20:19:45,273 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (1/1) ... [2020-07-21 20:19:45,274 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (1/1) ... [2020-07-21 20:19:45,292 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (1/1) ... [2020-07-21 20:19:45,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (1/1) ... [2020-07-21 20:19:45,307 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (1/1) ... [2020-07-21 20:19:45,312 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-21 20:19:45,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-21 20:19:45,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-21 20:19:45,313 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-21 20:19:45,314 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (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 [2020-07-21 20:19:45,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-21 20:19:45,388 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-21 20:19:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-21 20:19:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure fabs [2020-07-21 20:19:45,389 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-21 20:19:45,390 INFO L138 BoogieDeclarations]: Found implementation of procedure ludcmp [2020-07-21 20:19:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-21 20:19:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-21 20:19:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure ludcmp [2020-07-21 20:19:45,390 INFO L130 BoogieDeclarations]: Found specification of procedure fabs [2020-07-21 20:19:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-21 20:19:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2020-07-21 20:19:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2020-07-21 20:19:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-21 20:19:45,391 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-21 20:19:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-21 20:19:45,392 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-21 20:19:45,949 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-21 20:19:45,949 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-21 20:19:45,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:19:45 BoogieIcfgContainer [2020-07-21 20:19:45,961 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-21 20:19:45,963 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-21 20:19:45,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-21 20:19:45,968 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-21 20:19:45,968 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 08:19:44" (1/3) ... [2020-07-21 20:19:45,970 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cf7baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:19:45, skipping insertion in model container [2020-07-21 20:19:45,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 08:19:45" (2/3) ... [2020-07-21 20:19:45,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33cf7baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 08:19:45, skipping insertion in model container [2020-07-21 20:19:45,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 08:19:45" (3/3) ... [2020-07-21 20:19:45,973 INFO L109 eAbstractionObserver]: Analyzing ICFG lu.cmp.c [2020-07-21 20:19:45,988 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-21 20:19:45,999 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-21 20:19:46,018 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-21 20:19:46,048 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-21 20:19:46,049 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-21 20:19:46,049 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-21 20:19:46,049 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-21 20:19:46,049 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-21 20:19:46,049 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-21 20:19:46,049 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-21 20:19:46,049 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-21 20:19:46,072 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states. [2020-07-21 20:19:46,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-21 20:19:46,079 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:46,080 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:46,080 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:46,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:46,088 INFO L82 PathProgramCache]: Analyzing trace with hash 406725423, now seen corresponding path program 1 times [2020-07-21 20:19:46,097 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:46,098 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471687907] [2020-07-21 20:19:46,099 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 20:19:46,236 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:19:46,236 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:46,241 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:19:46,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:46,316 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:19:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-21 20:19:46,350 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:19:46,352 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471687907] [2020-07-21 20:19:46,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:19:46,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-21 20:19:46,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953090351] [2020-07-21 20:19:46,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-21 20:19:46,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:46,381 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-21 20:19:46,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-21 20:19:46,386 INFO L87 Difference]: Start difference. First operand 64 states. Second operand 5 states. [2020-07-21 20:19:46,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:46,532 INFO L93 Difference]: Finished difference Result 138 states and 203 transitions. [2020-07-21 20:19:46,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-21 20:19:46,535 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-21 20:19:46,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:46,546 INFO L225 Difference]: With dead ends: 138 [2020-07-21 20:19:46,547 INFO L226 Difference]: Without dead ends: 32 [2020-07-21 20:19:46,551 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-21 20:19:46,574 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-07-21 20:19:46,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-07-21 20:19:46,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-21 20:19:46,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-07-21 20:19:46,603 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 12 [2020-07-21 20:19:46,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:46,603 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-07-21 20:19:46,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-21 20:19:46,604 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-07-21 20:19:46,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-21 20:19:46,605 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:46,605 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:46,818 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:46,819 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:46,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:46,820 INFO L82 PathProgramCache]: Analyzing trace with hash 92366603, now seen corresponding path program 1 times [2020-07-21 20:19:46,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:46,821 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725190235] [2020-07-21 20:19:46,822 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 20:19:46,905 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:19:46,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:46,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 60 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-21 20:19:46,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:46,941 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-07-21 20:19:46,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:19:46,942 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725190235] [2020-07-21 20:19:46,943 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:19:46,943 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:19:46,943 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373562007] [2020-07-21 20:19:46,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:19:46,945 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:46,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:19:46,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:19:46,946 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 4 states. [2020-07-21 20:19:47,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:47,002 INFO L93 Difference]: Finished difference Result 57 states and 67 transitions. [2020-07-21 20:19:47,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:19:47,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-07-21 20:19:47,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:47,007 INFO L225 Difference]: With dead ends: 57 [2020-07-21 20:19:47,008 INFO L226 Difference]: Without dead ends: 38 [2020-07-21 20:19:47,009 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:19:47,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-07-21 20:19:47,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 32. [2020-07-21 20:19:47,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-21 20:19:47,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-21 20:19:47,020 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 21 [2020-07-21 20:19:47,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:47,020 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-21 20:19:47,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:19:47,020 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-21 20:19:47,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-21 20:19:47,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:47,022 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:47,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:47,237 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:47,239 INFO L82 PathProgramCache]: Analyzing trace with hash 865519403, now seen corresponding path program 1 times [2020-07-21 20:19:47,239 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:47,240 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [654576294] [2020-07-21 20:19:47,241 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 20:19:47,306 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:19:47,306 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:47,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-21 20:19:47,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:47,365 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-07-21 20:19:47,365 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:19:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-07-21 20:19:47,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [654576294] [2020-07-21 20:19:47,424 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:19:47,424 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-21 20:19:47,424 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223092940] [2020-07-21 20:19:47,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 20:19:47,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:47,426 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 20:19:47,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2020-07-21 20:19:47,427 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 8 states. [2020-07-21 20:19:47,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:47,518 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2020-07-21 20:19:47,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-21 20:19:47,519 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-07-21 20:19:47,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:47,521 INFO L225 Difference]: With dead ends: 76 [2020-07-21 20:19:47,521 INFO L226 Difference]: Without dead ends: 56 [2020-07-21 20:19:47,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=50, Unknown=0, NotChecked=0, Total=90 [2020-07-21 20:19:47,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-07-21 20:19:47,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-07-21 20:19:47,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 20:19:47,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-07-21 20:19:47,533 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 29 [2020-07-21 20:19:47,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:47,533 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-07-21 20:19:47,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 20:19:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-07-21 20:19:47,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 20:19:47,535 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:47,535 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:47,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:47,750 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:47,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:47,751 INFO L82 PathProgramCache]: Analyzing trace with hash 1085865355, now seen corresponding path program 2 times [2020-07-21 20:19:47,752 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:47,752 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662648541] [2020-07-21 20:19:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 20:19:47,823 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:19:47,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:47,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 20:19:47,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:47,863 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-07-21 20:19:47,863 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:19:47,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662648541] [2020-07-21 20:19:47,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:19:47,866 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-21 20:19:47,866 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007399765] [2020-07-21 20:19:47,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-21 20:19:47,868 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:47,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-21 20:19:47,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:19:47,868 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 4 states. [2020-07-21 20:19:47,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:47,914 INFO L93 Difference]: Finished difference Result 111 states and 130 transitions. [2020-07-21 20:19:47,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-21 20:19:47,915 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 53 [2020-07-21 20:19:47,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:47,916 INFO L225 Difference]: With dead ends: 111 [2020-07-21 20:19:47,916 INFO L226 Difference]: Without dead ends: 64 [2020-07-21 20:19:47,917 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-07-21 20:19:47,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-21 20:19:47,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-07-21 20:19:47,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-07-21 20:19:47,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 65 transitions. [2020-07-21 20:19:47,927 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 65 transitions. Word has length 53 [2020-07-21 20:19:47,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:47,927 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 65 transitions. [2020-07-21 20:19:47,928 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-21 20:19:47,928 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 65 transitions. [2020-07-21 20:19:47,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-21 20:19:47,930 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:47,930 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:48,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:48,145 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:48,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:48,145 INFO L82 PathProgramCache]: Analyzing trace with hash 192379017, now seen corresponding path program 1 times [2020-07-21 20:19:48,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:48,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561898888] [2020-07-21 20:19:48,146 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 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 [2020-07-21 20:19:48,286 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:19:48,286 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:48,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 7 conjunts are in the unsatisfiable core [2020-07-21 20:19:48,299 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:48,420 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-07-21 20:19:48,420 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:19:48,520 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 76 proven. 28 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-07-21 20:19:48,520 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561898888] [2020-07-21 20:19:48,520 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:19:48,521 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2020-07-21 20:19:48,521 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618455238] [2020-07-21 20:19:48,522 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 20:19:48,523 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:48,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 20:19:48,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=107, Unknown=0, NotChecked=0, Total=182 [2020-07-21 20:19:48,524 INFO L87 Difference]: Start difference. First operand 56 states and 65 transitions. Second operand 14 states. [2020-07-21 20:19:48,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:48,652 INFO L93 Difference]: Finished difference Result 104 states and 126 transitions. [2020-07-21 20:19:48,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 20:19:48,653 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-07-21 20:19:48,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:48,655 INFO L225 Difference]: With dead ends: 104 [2020-07-21 20:19:48,655 INFO L226 Difference]: Without dead ends: 72 [2020-07-21 20:19:48,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 93 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=85, Invalid=125, Unknown=0, NotChecked=0, Total=210 [2020-07-21 20:19:48,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-07-21 20:19:48,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-07-21 20:19:48,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-21 20:19:48,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 85 transitions. [2020-07-21 20:19:48,670 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 85 transitions. Word has length 53 [2020-07-21 20:19:48,670 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:48,670 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 85 transitions. [2020-07-21 20:19:48,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 20:19:48,671 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 85 transitions. [2020-07-21 20:19:48,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-07-21 20:19:48,674 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:48,674 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 11, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:48,887 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:48,888 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:48,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:48,889 INFO L82 PathProgramCache]: Analyzing trace with hash -752575031, now seen corresponding path program 2 times [2020-07-21 20:19:48,889 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:48,890 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649243957] [2020-07-21 20:19:48,890 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:49,083 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:19:49,084 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:49,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-21 20:19:49,092 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:49,120 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:19:49,165 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 159 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-07-21 20:19:49,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:19:49,179 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:19:49,220 INFO L134 CoverageAnalysis]: Checked inductivity of 293 backedges. 2 proven. 159 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-07-21 20:19:49,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1649243957] [2020-07-21 20:19:49,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:19:49,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 8 [2020-07-21 20:19:49,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60594682] [2020-07-21 20:19:49,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-21 20:19:49,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:49,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-21 20:19:49,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-21 20:19:49,224 INFO L87 Difference]: Start difference. First operand 72 states and 85 transitions. Second operand 8 states. [2020-07-21 20:19:49,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:49,337 INFO L93 Difference]: Finished difference Result 167 states and 203 transitions. [2020-07-21 20:19:49,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-21 20:19:49,338 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-07-21 20:19:49,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:49,340 INFO L225 Difference]: With dead ends: 167 [2020-07-21 20:19:49,340 INFO L226 Difference]: Without dead ends: 165 [2020-07-21 20:19:49,341 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 129 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-07-21 20:19:49,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-21 20:19:49,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 163. [2020-07-21 20:19:49,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2020-07-21 20:19:49,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 199 transitions. [2020-07-21 20:19:49,369 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 199 transitions. Word has length 69 [2020-07-21 20:19:49,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:49,370 INFO L479 AbstractCegarLoop]: Abstraction has 163 states and 199 transitions. [2020-07-21 20:19:49,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-21 20:19:49,370 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 199 transitions. [2020-07-21 20:19:49,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-07-21 20:19:49,374 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:49,375 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 30, 29, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:49,581 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:49,582 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:49,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:49,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1281791738, now seen corresponding path program 3 times [2020-07-21 20:19:49,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:49,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [174646232] [2020-07-21 20:19:49,585 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:50,785 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 2 check-sat command(s) [2020-07-21 20:19:50,786 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:50,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-21 20:19:50,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:50,887 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-21 20:19:50,937 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 8 proven. 1602 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-07-21 20:19:50,937 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-21 20:19:50,955 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-21 20:19:51,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1964 backedges. 8 proven. 1602 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2020-07-21 20:19:51,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [174646232] [2020-07-21 20:19:51,114 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-21 20:19:51,114 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-21 20:19:51,114 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333732029] [2020-07-21 20:19:51,115 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-21 20:19:51,115 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:51,116 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-21 20:19:51,116 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-07-21 20:19:51,116 INFO L87 Difference]: Start difference. First operand 163 states and 199 transitions. Second operand 14 states. [2020-07-21 20:19:51,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:51,366 INFO L93 Difference]: Finished difference Result 345 states and 428 transitions. [2020-07-21 20:19:51,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-21 20:19:51,367 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 168 [2020-07-21 20:19:51,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:51,375 INFO L225 Difference]: With dead ends: 345 [2020-07-21 20:19:51,376 INFO L226 Difference]: Without dead ends: 343 [2020-07-21 20:19:51,379 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 336 GetRequests, 321 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2020-07-21 20:19:51,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-07-21 20:19:51,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 341. [2020-07-21 20:19:51,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 341 states. [2020-07-21 20:19:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 341 states to 341 states and 424 transitions. [2020-07-21 20:19:51,446 INFO L78 Accepts]: Start accepts. Automaton has 341 states and 424 transitions. Word has length 168 [2020-07-21 20:19:51,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:51,447 INFO L479 AbstractCegarLoop]: Abstraction has 341 states and 424 transitions. [2020-07-21 20:19:51,448 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-21 20:19:51,449 INFO L276 IsEmpty]: Start isEmpty. Operand 341 states and 424 transitions. [2020-07-21 20:19:51,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-07-21 20:19:51,465 INFO L414 BasicCegarLoop]: Found error trace [2020-07-21 20:19:51,466 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 66, 65, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-21 20:19:51,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:51,681 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-21 20:19:51,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-21 20:19:51,682 INFO L82 PathProgramCache]: Analyzing trace with hash -174896998, now seen corresponding path program 4 times [2020-07-21 20:19:51,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-21 20:19:51,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1022496110] [2020-07-21 20:19:51,683 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:51,836 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 2 partitions) issued 1 check-sat command(s) [2020-07-21 20:19:51,837 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-21 20:19:51,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 438 conjuncts, 9 conjunts are in the unsatisfiable core [2020-07-21 20:19:51,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-21 20:19:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 9761 backedges. 7345 proven. 0 refuted. 0 times theorem prover too weak. 2416 trivial. 0 not checked. [2020-07-21 20:19:52,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-21 20:19:52,238 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1022496110] [2020-07-21 20:19:52,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-21 20:19:52,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-21 20:19:52,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234448195] [2020-07-21 20:19:52,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-21 20:19:52,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-21 20:19:52,244 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-21 20:19:52,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-07-21 20:19:52,245 INFO L87 Difference]: Start difference. First operand 341 states and 424 transitions. Second operand 9 states. [2020-07-21 20:19:52,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-21 20:19:52,423 INFO L93 Difference]: Finished difference Result 345 states and 427 transitions. [2020-07-21 20:19:52,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-21 20:19:52,424 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 366 [2020-07-21 20:19:52,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-21 20:19:52,427 INFO L225 Difference]: With dead ends: 345 [2020-07-21 20:19:52,428 INFO L226 Difference]: Without dead ends: 0 [2020-07-21 20:19:52,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 358 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-07-21 20:19:52,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-21 20:19:52,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-21 20:19:52,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-21 20:19:52,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-21 20:19:52,436 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 366 [2020-07-21 20:19:52,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-21 20:19:52,437 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-21 20:19:52,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-21 20:19:52,437 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-21 20:19:52,437 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-21 20:19:52,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-21 20:19:52,654 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-21 20:19:52,897 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 35 [2020-07-21 20:19:53,082 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 34 [2020-07-21 20:19:53,197 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-07-21 20:19:53,312 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 35 DAG size of output: 29 [2020-07-21 20:19:53,329 INFO L271 CegarLoopResult]: At program point L118(line 118) the Hoare annotation is: true [2020-07-21 20:19:53,329 INFO L268 CegarLoopResult]: For program point L118-1(line 118) no Hoare annotation was computed. [2020-07-21 20:19:53,329 INFO L268 CegarLoopResult]: For program point L127-2(lines 127 133) no Hoare annotation was computed. [2020-07-21 20:19:53,329 INFO L271 CegarLoopResult]: At program point L127-3(lines 127 133) the Hoare annotation is: true [2020-07-21 20:19:53,329 INFO L268 CegarLoopResult]: For program point L119-2(lines 119 126) no Hoare annotation was computed. [2020-07-21 20:19:53,330 INFO L271 CegarLoopResult]: At program point L119-3(lines 119 126) the Hoare annotation is: true [2020-07-21 20:19:53,330 INFO L268 CegarLoopResult]: For program point L119-4(lines 119 126) no Hoare annotation was computed. [2020-07-21 20:19:53,330 INFO L268 CegarLoopResult]: For program point L144-2(lines 144 150) no Hoare annotation was computed. [2020-07-21 20:19:53,330 INFO L271 CegarLoopResult]: At program point L144-3(lines 144 150) the Hoare annotation is: true [2020-07-21 20:19:53,330 INFO L268 CegarLoopResult]: For program point L144-4(lines 144 150) no Hoare annotation was computed. [2020-07-21 20:19:53,330 INFO L268 CegarLoopResult]: For program point L136-2(lines 136 142) no Hoare annotation was computed. [2020-07-21 20:19:53,330 INFO L271 CegarLoopResult]: At program point L136-3(lines 136 142) the Hoare annotation is: true [2020-07-21 20:19:53,331 INFO L268 CegarLoopResult]: For program point L136-4(lines 136 142) no Hoare annotation was computed. [2020-07-21 20:19:53,331 INFO L268 CegarLoopResult]: For program point ludcmpEXIT(lines 109 153) no Hoare annotation was computed. [2020-07-21 20:19:53,331 INFO L271 CegarLoopResult]: At program point ludcmpENTRY(lines 109 153) the Hoare annotation is: true [2020-07-21 20:19:53,331 INFO L268 CegarLoopResult]: For program point ludcmpFINAL(lines 109 153) no Hoare annotation was computed. [2020-07-21 20:19:53,331 INFO L268 CegarLoopResult]: For program point L130-2(lines 130 131) no Hoare annotation was computed. [2020-07-21 20:19:53,331 INFO L271 CegarLoopResult]: At program point L130-3(lines 130 131) the Hoare annotation is: true [2020-07-21 20:19:53,331 INFO L268 CegarLoopResult]: For program point L130-4(lines 130 131) no Hoare annotation was computed. [2020-07-21 20:19:53,332 INFO L268 CegarLoopResult]: For program point L122(lines 122 124) no Hoare annotation was computed. [2020-07-21 20:19:53,332 INFO L268 CegarLoopResult]: For program point L122-1(lines 122 124) no Hoare annotation was computed. [2020-07-21 20:19:53,332 INFO L268 CegarLoopResult]: For program point L147-2(lines 147 148) no Hoare annotation was computed. [2020-07-21 20:19:53,332 INFO L271 CegarLoopResult]: At program point L147-3(lines 147 148) the Hoare annotation is: true [2020-07-21 20:19:53,332 INFO L268 CegarLoopResult]: For program point L147-4(lines 147 148) no Hoare annotation was computed. [2020-07-21 20:19:53,332 INFO L268 CegarLoopResult]: For program point L139-2(lines 139 140) no Hoare annotation was computed. [2020-07-21 20:19:53,333 INFO L271 CegarLoopResult]: At program point L139-3(lines 139 140) the Hoare annotation is: true [2020-07-21 20:19:53,333 INFO L268 CegarLoopResult]: For program point L139-4(lines 139 140) no Hoare annotation was computed. [2020-07-21 20:19:53,333 INFO L268 CegarLoopResult]: For program point L123-2(lines 123 124) no Hoare annotation was computed. [2020-07-21 20:19:53,333 INFO L271 CegarLoopResult]: At program point L123-3(lines 123 124) the Hoare annotation is: true [2020-07-21 20:19:53,333 INFO L268 CegarLoopResult]: For program point L115(line 115) no Hoare annotation was computed. [2020-07-21 20:19:53,333 INFO L268 CegarLoopResult]: For program point L116-2(lines 116 134) no Hoare annotation was computed. [2020-07-21 20:19:53,333 INFO L271 CegarLoopResult]: At program point L116-3(lines 116 134) the Hoare annotation is: true [2020-07-21 20:19:53,334 INFO L268 CegarLoopResult]: For program point L116-4(lines 116 134) no Hoare annotation was computed. [2020-07-21 20:19:53,334 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:19:53,334 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:19:53,334 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:19:53,334 INFO L268 CegarLoopResult]: For program point L78(lines 78 79) no Hoare annotation was computed. [2020-07-21 20:19:53,334 INFO L268 CegarLoopResult]: For program point L78-2(lines 78 79) no Hoare annotation was computed. [2020-07-21 20:19:53,334 INFO L268 CegarLoopResult]: For program point fabsEXIT(lines 74 81) no Hoare annotation was computed. [2020-07-21 20:19:53,334 INFO L271 CegarLoopResult]: At program point fabsENTRY(lines 74 81) the Hoare annotation is: true [2020-07-21 20:19:53,335 INFO L268 CegarLoopResult]: For program point fabsFINAL(lines 74 81) no Hoare annotation was computed. [2020-07-21 20:19:53,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-21 20:19:53,335 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-21 20:19:53,335 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-21 20:19:53,335 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-21 20:19:53,335 INFO L268 CegarLoopResult]: For program point L97(line 97) no Hoare annotation was computed. [2020-07-21 20:19:53,335 INFO L268 CegarLoopResult]: For program point L97-2(line 97) no Hoare annotation was computed. [2020-07-21 20:19:53,335 INFO L268 CegarLoopResult]: For program point L91-2(lines 91 102) no Hoare annotation was computed. [2020-07-21 20:19:53,336 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 83 107) no Hoare annotation was computed. [2020-07-21 20:19:53,336 INFO L264 CegarLoopResult]: At program point L91-3(lines 91 102) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 5)) (.cse1 (<= 5 main_~n~0))) (or (and .cse0 .cse1 (= 0 main_~i~0)) (and .cse0 (<= main_~i~0 4) .cse1 (<= 4 main_~i~0)) (and .cse0 .cse1 (<= main_~i~0 1) (<= 1 main_~i~0)) (and (<= main_~i~0 3) .cse0 .cse1 (<= 3 main_~i~0)) (and .cse0 (<= 5 main_~i~0) .cse1 (< main_~i~0 46)) (and .cse0 .cse1 (< main_~i~0 47) (<= 6 main_~i~0)) (and (<= 2 main_~i~0) .cse0 (<= main_~i~0 2) .cse1))) [2020-07-21 20:19:53,336 INFO L271 CegarLoopResult]: At program point L91-4(lines 91 102) the Hoare annotation is: true [2020-07-21 20:19:53,337 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 83 107) no Hoare annotation was computed. [2020-07-21 20:19:53,337 INFO L268 CegarLoopResult]: For program point L104(line 104) no Hoare annotation was computed. [2020-07-21 20:19:53,337 INFO L268 CegarLoopResult]: For program point L100(line 100) no Hoare annotation was computed. [2020-07-21 20:19:53,337 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 83 107) the Hoare annotation is: true [2020-07-21 20:19:53,337 INFO L268 CegarLoopResult]: For program point L94-2(lines 94 99) no Hoare annotation was computed. [2020-07-21 20:19:53,337 INFO L264 CegarLoopResult]: At program point L94-3(lines 94 99) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 5)) (.cse1 (<= 5 main_~n~0))) (or (and .cse0 .cse1 (= 0 main_~i~0)) (and .cse0 (<= main_~i~0 4) .cse1 (<= 4 main_~i~0)) (and .cse0 .cse1 (<= main_~i~0 1) (<= 1 main_~i~0)) (and (<= main_~i~0 3) .cse0 .cse1 (<= 3 main_~i~0)) (and .cse0 (<= 5 main_~i~0) .cse1 (< main_~i~0 46)) (and (<= 2 main_~i~0) .cse0 (<= main_~i~0 2) .cse1))) [2020-07-21 20:19:53,338 INFO L264 CegarLoopResult]: At program point L94-4(lines 94 99) the Hoare annotation is: (let ((.cse0 (<= main_~n~0 5)) (.cse1 (<= 5 main_~n~0))) (or (and .cse0 .cse1 (= 0 main_~i~0)) (and .cse0 (<= main_~i~0 4) .cse1 (<= 4 main_~i~0)) (and .cse0 .cse1 (<= main_~i~0 1) (<= 1 main_~i~0)) (and (<= main_~i~0 3) .cse0 .cse1 (<= 3 main_~i~0)) (and .cse0 (<= 5 main_~i~0) .cse1 (< main_~i~0 46)) (and (<= 2 main_~i~0) .cse0 (<= main_~i~0 2) .cse1))) [2020-07-21 20:19:53,338 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-07-21 20:19:53,338 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-07-21 20:19:53,338 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-07-21 20:19:53,338 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-07-21 20:19:53,338 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-07-21 20:19:53,338 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-07-21 20:19:53,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 08:19:53 BoogieIcfgContainer [2020-07-21 20:19:53,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-21 20:19:53,367 INFO L168 Benchmark]: Toolchain (without parser) took 8629.70 ms. Allocated memory was 135.3 MB in the beginning and 299.9 MB in the end (delta: 164.6 MB). Free memory was 100.2 MB in the beginning and 159.7 MB in the end (delta: -59.5 MB). Peak memory consumption was 105.2 MB. Max. memory is 7.1 GB. [2020-07-21 20:19:53,368 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-21 20:19:53,369 INFO L168 Benchmark]: CACSL2BoogieTranslator took 501.00 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 99.8 MB in the beginning and 178.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. [2020-07-21 20:19:53,370 INFO L168 Benchmark]: Boogie Preprocessor took 69.87 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 175.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-21 20:19:53,371 INFO L168 Benchmark]: RCFGBuilder took 648.50 ms. Allocated memory is still 200.3 MB. Free memory was 175.7 MB in the beginning and 148.2 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-21 20:19:53,373 INFO L168 Benchmark]: TraceAbstraction took 7402.33 ms. Allocated memory was 200.3 MB in the beginning and 299.9 MB in the end (delta: 99.6 MB). Free memory was 147.4 MB in the beginning and 159.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. [2020-07-21 20:19:53,377 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 135.3 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 501.00 ms. Allocated memory was 135.3 MB in the beginning and 200.3 MB in the end (delta: 65.0 MB). Free memory was 99.8 MB in the beginning and 178.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 25.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 69.87 ms. Allocated memory is still 200.3 MB. Free memory was 178.6 MB in the beginning and 175.7 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 648.50 ms. Allocated memory is still 200.3 MB. Free memory was 175.7 MB in the beginning and 148.2 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7402.33 ms. Allocated memory was 200.3 MB in the beginning and 299.9 MB in the end (delta: 99.6 MB). Free memory was 147.4 MB in the beginning and 159.7 MB in the end (delta: -12.3 MB). Peak memory consumption was 87.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: 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: 116]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 94]: Loop Invariant Derived loop invariant: ((((((n <= 5 && 5 <= n) && 0 == i) || (((n <= 5 && i <= 4) && 5 <= n) && 4 <= i)) || (((n <= 5 && 5 <= n) && i <= 1) && 1 <= i)) || (((i <= 3 && n <= 5) && 5 <= n) && 3 <= i)) || (((n <= 5 && 5 <= i) && 5 <= n) && i < 46)) || (((2 <= i && n <= 5) && i <= 2) && 5 <= n) - InvariantResult [Line: 127]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 144]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 123]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 139]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 91]: Loop Invariant Derived loop invariant: (((((((n <= 5 && 5 <= n) && 0 == i) || (((n <= 5 && i <= 4) && 5 <= n) && 4 <= i)) || (((n <= 5 && 5 <= n) && i <= 1) && 1 <= i)) || (((i <= 3 && n <= 5) && 5 <= n) && 3 <= i)) || (((n <= 5 && 5 <= i) && 5 <= n) && i < 46)) || (((n <= 5 && 5 <= n) && i < 47) && 6 <= i)) || (((2 <= i && n <= 5) && i <= 2) && 5 <= n) - InvariantResult [Line: 119]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 130]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 136]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 147]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 64 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 6.6s, OverallIterations: 8, TraceHistogramMax: 66, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.6s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 196 SDtfs, 231 SDslu, 533 SDs, 0 SdLazy, 470 SolverSat, 51 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 1088 GetRequests, 1028 SyntacticMatches, 4 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=341occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 8 MinimizatonAttempts, 20 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 21 LocationsWithAnnotation, 63 PreInvPairs, 140 NumberOfFragments, 259 HoareAnnotationTreeSize, 63 FomulaSimplifications, 669 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 21 FomulaSimplificationsInter, 36 FormulaSimplificationTreeSizeReductionInter, 0.3s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 1.5s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 771 NumberOfCodeBlocks, 532 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 1078 ConstructedInterpolants, 0 QuantifiedInterpolants, 715096 SizeOfPredicates, 16 NumberOfNonLiveVariables, 1418 ConjunctsInSsa, 45 ConjunctsInUnsatCore, 12 InterpolantComputations, 4 PerfectInterpolantSequences, 11125/14705 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...