/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_VARIABLES --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/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 17:42:01,228 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 17:42:01,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 17:42:01,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-07-20 17:42:01,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 17:42:01,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 17:42:01,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 17:42:01,264 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 17:42:01,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 17:42:01,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 17:42:01,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 17:42:01,269 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 17:42:01,271 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 17:42:01,272 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 17:42:01,273 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 17:42:01,274 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 17:42:01,277 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 17:42:01,287 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 17:42:01,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 17:42:01,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 17:42:01,304 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 17:42:01,304 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 17:42:01,305 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 17:42:01,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 17:42:01,305 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 17:42:01,305 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 17:42:01,305 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 17:42:01,306 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 17:42:01,306 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 17:42:01,306 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 17:42:01,306 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 17:42:01,306 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 17:42:01,307 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 17:42:01,307 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 17:42:01,307 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 17:42:01,307 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 17:42:01,307 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 17:42:01,308 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 17:42:01,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 17:42:01,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 17:42:01,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 17:42:01,308 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 17:42:01,309 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 17:42:01,309 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 17:42:01,309 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:01,309 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 17:42:01,309 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 17:42:01,310 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_VARIABLES 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 17:42:01,613 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 17:42:01,630 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 17:42:01,635 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 17:42:01,638 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 17:42:01,639 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 17:42:01,641 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2020-07-20 17:42:01,719 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfe7a01e/b27cf7f232b84b608086600631905351/FLAG44fcdcce1 [2020-07-20 17:42:02,186 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 17:42:02,187 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01-1.i [2020-07-20 17:42:02,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfe7a01e/b27cf7f232b84b608086600631905351/FLAG44fcdcce1 [2020-07-20 17:42:02,556 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/adfe7a01e/b27cf7f232b84b608086600631905351 [2020-07-20 17:42:02,565 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 17:42:02,567 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 17:42:02,568 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 17:42:02,568 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 17:42:02,572 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 17:42:02,573 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@79934605 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02, skipping insertion in model container [2020-07-20 17:42:02,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,585 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 17:42:02,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 17:42:02,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:42:02,776 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 17:42:02,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 17:42:02,818 INFO L208 MainTranslator]: Completed translation [2020-07-20 17:42:02,819 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02 WrapperNode [2020-07-20 17:42:02,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 17:42:02,820 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 17:42:02,821 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 17:42:02,821 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 17:42:02,837 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,846 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,846 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,979 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,986 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,987 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (1/1) ... [2020-07-20 17:42:02,989 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 17:42:02,991 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 17:42:02,991 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 17:42:02,991 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 17:42:02,992 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (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 17:42:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 17:42:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 17:42:03,074 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-20 17:42:03,075 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 17:42:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 17:42:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-20 17:42:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-20 17:42:03,075 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 17:42:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 17:42:03,076 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 17:42:03,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 17:42:03,316 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-20 17:42:03,329 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:42:03 BoogieIcfgContainer [2020-07-20 17:42:03,330 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 17:42:03,331 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 17:42:03,331 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 17:42:03,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 17:42:03,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 05:42:02" (1/3) ... [2020-07-20 17:42:03,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2c0f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:42:03, skipping insertion in model container [2020-07-20 17:42:03,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 05:42:02" (2/3) ... [2020-07-20 17:42:03,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4e2c0f7a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 05:42:03, skipping insertion in model container [2020-07-20 17:42:03,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 05:42:03" (3/3) ... [2020-07-20 17:42:03,352 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2020-07-20 17:42:03,381 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 17:42:03,401 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 17:42:03,437 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 17:42:03,470 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 17:42:03,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 17:42:03,471 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 17:42:03,471 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 17:42:03,471 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 17:42:03,472 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 17:42:03,472 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 17:42:03,472 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 17:42:03,503 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 17:42:03,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 17:42:03,512 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:42:03,514 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:42:03,515 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:42:03,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:42:03,523 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2020-07-20 17:42:03,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:42:03,534 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143131913] [2020-07-20 17:42:03,536 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 17:42:03,645 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:42:03,645 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:42:03,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 1 conjunts are in the unsatisfiable core [2020-07-20 17:42:03,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:42:03,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:03,675 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:42:03,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143131913] [2020-07-20 17:42:03,677 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:42:03,677 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-20 17:42:03,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [35208343] [2020-07-20 17:42:03,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-20 17:42:03,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:42:03,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-20 17:42:03,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-20 17:42:03,700 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-07-20 17:42:03,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:42:03,722 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-07-20 17:42:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-20 17:42:03,724 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-07-20 17:42:03,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:42:03,733 INFO L225 Difference]: With dead ends: 30 [2020-07-20 17:42:03,733 INFO L226 Difference]: Without dead ends: 13 [2020-07-20 17:42:03,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 9 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 17:42:03,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-07-20 17:42:03,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-07-20 17:42:03,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-07-20 17:42:03,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-07-20 17:42:03,778 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-07-20 17:42:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:42:03,779 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-07-20 17:42:03,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-20 17:42:03,779 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-07-20 17:42:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-20 17:42:03,780 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:42:03,780 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:42:03,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:03,995 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:42:03,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:42:03,996 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2020-07-20 17:42:03,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:42:03,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1226031086] [2020-07-20 17:42:03,998 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 17:42:04,028 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:42:04,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:42:04,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 25 conjuncts, 5 conjunts are in the unsatisfiable core [2020-07-20 17:42:04,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:42:04,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:04,099 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 17:42:04,100 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1226031086] [2020-07-20 17:42:04,100 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 17:42:04,100 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-20 17:42:04,101 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86199774] [2020-07-20 17:42:04,103 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-20 17:42:04,103 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:42:04,104 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-20 17:42:04,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-20 17:42:04,104 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-07-20 17:42:04,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:42:04,146 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-07-20 17:42:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-20 17:42:04,147 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-07-20 17:42:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:42:04,149 INFO L225 Difference]: With dead ends: 21 [2020-07-20 17:42:04,149 INFO L226 Difference]: Without dead ends: 16 [2020-07-20 17:42:04,150 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-20 17:42:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-07-20 17:42:04,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-07-20 17:42:04,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-07-20 17:42:04,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-07-20 17:42:04,156 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-07-20 17:42:04,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:42:04,157 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-07-20 17:42:04,157 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-20 17:42:04,157 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-07-20 17:42:04,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-07-20 17:42:04,158 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:42:04,158 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:42:04,372 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:04,373 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:42:04,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:42:04,375 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2020-07-20 17:42:04,375 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:42:04,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [167258637] [2020-07-20 17:42:04,376 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 17:42:04,407 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 3 check-sat command(s) [2020-07-20 17:42:04,408 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:42:04,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 12 conjunts are in the unsatisfiable core [2020-07-20 17:42:04,411 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:42:04,540 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:42:04,578 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:04,578 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:42:04,611 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:42:04,895 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:04,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [167258637] [2020-07-20 17:42:04,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:42:04,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2020-07-20 17:42:04,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1016444029] [2020-07-20 17:42:04,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-20 17:42:04,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:42:04,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-20 17:42:04,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2020-07-20 17:42:04,899 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 14 states. [2020-07-20 17:42:05,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:42:05,253 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2020-07-20 17:42:05,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-20 17:42:05,254 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 13 [2020-07-20 17:42:05,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:42:05,255 INFO L225 Difference]: With dead ends: 36 [2020-07-20 17:42:05,256 INFO L226 Difference]: Without dead ends: 21 [2020-07-20 17:42:05,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-07-20 17:42:05,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-07-20 17:42:05,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 20. [2020-07-20 17:42:05,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-07-20 17:42:05,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-07-20 17:42:05,268 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 13 [2020-07-20 17:42:05,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:42:05,270 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-07-20 17:42:05,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-20 17:42:05,271 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-07-20 17:42:05,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 17:42:05,272 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:42:05,273 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:42:05,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:05,487 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:42:05,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:42:05,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 1 times [2020-07-20 17:42:05,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:42:05,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1109167268] [2020-07-20 17:42:05,489 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 17:42:05,515 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:42:05,515 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:42:05,516 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 4 conjunts are in the unsatisfiable core [2020-07-20 17:42:05,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:42:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:05,540 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:42:05,570 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:05,571 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1109167268] [2020-07-20 17:42:05,571 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:42:05,571 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2020-07-20 17:42:05,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [971577761] [2020-07-20 17:42:05,572 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-20 17:42:05,572 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:42:05,572 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-20 17:42:05,573 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-07-20 17:42:05,573 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-07-20 17:42:05,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:42:05,632 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-07-20 17:42:05,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-20 17:42:05,632 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-07-20 17:42:05,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:42:05,635 INFO L225 Difference]: With dead ends: 42 [2020-07-20 17:42:05,635 INFO L226 Difference]: Without dead ends: 34 [2020-07-20 17:42:05,636 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-07-20 17:42:05,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-07-20 17:42:05,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 30. [2020-07-20 17:42:05,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-20 17:42:05,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-07-20 17:42:05,645 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-07-20 17:42:05,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:42:05,645 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-07-20 17:42:05,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-20 17:42:05,645 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-07-20 17:42:05,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-20 17:42:05,646 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:42:05,646 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:42:05,854 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:05,855 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:42:05,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:42:05,856 INFO L82 PathProgramCache]: Analyzing trace with hash -424886253, now seen corresponding path program 2 times [2020-07-20 17:42:05,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:42:05,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2095501636] [2020-07-20 17:42:05,858 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 17:42:05,889 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:42:05,890 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:42:05,891 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 20 conjunts are in the unsatisfiable core [2020-07-20 17:42:05,892 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:42:06,020 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-07-20 17:42:06,052 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:06,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:42:06,085 INFO L501 QuantifierPusher]: Distributing 2 disjuncts over 2 conjuncts [2020-07-20 17:42:06,416 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:06,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2095501636] [2020-07-20 17:42:06,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:42:06,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 22 [2020-07-20 17:42:06,417 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970223949] [2020-07-20 17:42:06,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-20 17:42:06,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:42:06,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-20 17:42:06,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=387, Unknown=0, NotChecked=0, Total=462 [2020-07-20 17:42:06,420 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 22 states. [2020-07-20 17:42:07,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:42:07,358 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-07-20 17:42:07,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-20 17:42:07,359 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 19 [2020-07-20 17:42:07,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:42:07,360 INFO L225 Difference]: With dead ends: 41 [2020-07-20 17:42:07,360 INFO L226 Difference]: Without dead ends: 35 [2020-07-20 17:42:07,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 167 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=202, Invalid=1058, Unknown=0, NotChecked=0, Total=1260 [2020-07-20 17:42:07,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-07-20 17:42:07,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-07-20 17:42:07,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-20 17:42:07,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-07-20 17:42:07,375 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 19 [2020-07-20 17:42:07,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:42:07,376 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-07-20 17:42:07,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-20 17:42:07,376 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-07-20 17:42:07,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-20 17:42:07,377 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:42:07,380 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:42:07,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:07,587 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:42:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:42:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash 98169237, now seen corresponding path program 2 times [2020-07-20 17:42:07,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:42:07,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2145777569] [2020-07-20 17:42:07,589 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 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 [2020-07-20 17:42:07,622 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:42:07,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 17:42:07,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 8 conjunts are in the unsatisfiable core [2020-07-20 17:42:07,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 17:42:07,684 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:07,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2020-07-20 17:42:07,760 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 17:42:07,760 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2145777569] [2020-07-20 17:42:07,761 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-20 17:42:07,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 11 [2020-07-20 17:42:07,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340447293] [2020-07-20 17:42:07,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-20 17:42:07,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 17:42:07,765 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-20 17:42:07,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-07-20 17:42:07,766 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 11 states. [2020-07-20 17:42:07,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 17:42:07,836 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-20 17:42:07,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-20 17:42:07,838 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 31 [2020-07-20 17:42:07,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 17:42:07,839 INFO L225 Difference]: With dead ends: 51 [2020-07-20 17:42:07,840 INFO L226 Difference]: Without dead ends: 43 [2020-07-20 17:42:07,842 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 47 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-07-20 17:42:07,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-07-20 17:42:07,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-07-20 17:42:07,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-20 17:42:07,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-07-20 17:42:07,856 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 31 [2020-07-20 17:42:07,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 17:42:07,857 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-07-20 17:42:07,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-20 17:42:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-07-20 17:42:07,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-20 17:42:07,860 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 17:42:07,860 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 17:42:08,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:08,074 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 17:42:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 17:42:08,075 INFO L82 PathProgramCache]: Analyzing trace with hash 1032151993, now seen corresponding path program 3 times [2020-07-20 17:42:08,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 17:42:08,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [255745977] [2020-07-20 17:42:08,076 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 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 [2020-07-20 17:42:08,108 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 4 check-sat command(s) [2020-07-20 17:42:08,108 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2020-07-20 17:42:08,109 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 17:42:08,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-20 17:42:08,121 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-07-20 17:42:08,141 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-20 17:42:08,141 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-20 17:42:08,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 17:42:08,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 05:42:08 BoogieIcfgContainer [2020-07-20 17:42:08,386 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 17:42:08,389 INFO L168 Benchmark]: Toolchain (without parser) took 5821.87 ms. Allocated memory was 135.8 MB in the beginning and 249.6 MB in the end (delta: 113.8 MB). Free memory was 99.8 MB in the beginning and 97.9 MB in the end (delta: 1.9 MB). Peak memory consumption was 115.6 MB. Max. memory is 7.1 GB. [2020-07-20 17:42:08,390 INFO L168 Benchmark]: CDTParser took 0.90 ms. Allocated memory is still 135.8 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-20 17:42:08,393 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.88 ms. Allocated memory is still 135.8 MB. Free memory was 99.6 MB in the beginning and 89.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-20 17:42:08,395 INFO L168 Benchmark]: Boogie Preprocessor took 168.94 ms. Allocated memory was 135.8 MB in the beginning and 202.9 MB in the end (delta: 67.1 MB). Free memory was 89.8 MB in the beginning and 181.8 MB in the end (delta: -92.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-20 17:42:08,398 INFO L168 Benchmark]: RCFGBuilder took 339.14 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 169.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-07-20 17:42:08,402 INFO L168 Benchmark]: TraceAbstraction took 5055.27 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 169.0 MB in the beginning and 97.9 MB in the end (delta: 71.1 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. [2020-07-20 17:42:08,409 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.90 ms. Allocated memory is still 135.8 MB. Free memory was 117.6 MB in the beginning and 117.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 251.88 ms. Allocated memory is still 135.8 MB. Free memory was 99.6 MB in the beginning and 89.8 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.94 ms. Allocated memory was 135.8 MB in the beginning and 202.9 MB in the end (delta: 67.1 MB). Free memory was 89.8 MB in the beginning and 181.8 MB in the end (delta: -92.0 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 339.14 ms. Allocated memory is still 202.9 MB. Free memory was 181.8 MB in the beginning and 169.7 MB in the end (delta: 12.1 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5055.27 ms. Allocated memory was 202.9 MB in the beginning and 249.6 MB in the end (delta: 46.7 MB). Free memory was 169.0 MB in the beginning and 97.9 MB in the end (delta: 71.1 MB). Peak memory consumption was 117.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 5]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] int i, n=__VERIFIER_nondet_uint(), sn=0; [L13] i=1 VAL [i=1, n=10, n=0] [L13] COND TRUE i<=n VAL [i=1, n=10, n=0] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=1, n=10, n=2] [L13] i++ VAL [i=2, n=10, n=2] [L13] COND TRUE i<=n VAL [i=2, n=10, n=2] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=2, n=10, n=4] [L13] i++ VAL [i=3, n=10, n=4] [L13] COND TRUE i<=n VAL [i=3, n=10, n=4] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=3, n=6, n=10] [L13] i++ VAL [i=4, n=10, n=6] [L13] COND TRUE i<=n VAL [i=4, n=10, n=6] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=4, n=10, n=8] [L13] i++ VAL [i=5, n=10, n=8] [L13] COND TRUE i<=n VAL [i=5, n=10, n=8] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=5, n=10, n=10] [L13] i++ VAL [i=6, n=10, n=10] [L13] COND TRUE i<=n VAL [i=6, n=10, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=6, n=10, n=12] [L13] i++ VAL [i=7, n=10, n=12] [L13] COND TRUE i<=n VAL [i=7, n=10, n=12] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=7, n=10, n=14] [L13] i++ VAL [i=8, n=10, n=14] [L13] COND TRUE i<=n VAL [i=8, n=14, n=10] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=8, n=10, n=16] [L13] i++ VAL [i=9, n=10, n=16] [L13] COND TRUE i<=n VAL [i=9, n=10, n=16] [L14] COND TRUE i<10 [L15] sn = sn + (2) VAL [i=9, n=18, n=10] [L13] i++ VAL [i=10, n=18, n=10] [L13] COND TRUE i<=n VAL [i=10, n=10, n=18] [L14] COND FALSE !(i<10) VAL [i=10, n=18, n=10] [L13] i++ VAL [i=11, n=10, n=18] [L13] COND FALSE !(i<=n) VAL [i=11, n=18, n=10] [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) VAL [\old(cond)=0] [L4] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L5] __VERIFIER_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 10, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 69 SDtfs, 59 SDslu, 221 SDs, 0 SdLazy, 334 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 197 GetRequests, 119 SyntacticMatches, 9 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=6, 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, 6 MinimizatonAttempts, 8 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 142 NumberOfCodeBlocks, 139 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 174 ConstructedInterpolants, 0 QuantifiedInterpolants, 13236 SizeOfPredicates, 12 NumberOfNonLiveVariables, 233 ConjunctsInSsa, 50 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 36/190 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 incorrect! Received shutdown request...