/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-19 02:04:59,444 INFO L177 SettingsManager]: Resetting all preferences to default values... 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[2020-08-19 02:04:59,471 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-19 02:04:59,472 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-19 02:04:59,473 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-19 02:04:59,475 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-19 02:04:59,477 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-19 02:04:59,478 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-19 02:04:59,479 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-19 02:04:59,480 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-19 02:04:59,481 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-19 02:04:59,482 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-19 02:04:59,483 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-19 02:04:59,484 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-19 02:04:59,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-19 02:04:59,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-19 02:04:59,487 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-19 02:04:59,489 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-19 02:04:59,492 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-19 02:04:59,494 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-19 02:04:59,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-19 02:04:59,500 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-19 02:04:59,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-19 02:04:59,519 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-19 02:04:59,520 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-19 02:04:59,522 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-19 02:04:59,523 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-19 02:04:59,574 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-19 02:04:59,575 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-19 02:04:59,576 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-19 02:04:59,576 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-19 02:04:59,576 INFO L138 SettingsManager]: * Use SBE=true [2020-08-19 02:04:59,580 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-19 02:04:59,580 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-19 02:04:59,580 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-19 02:04:59,580 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-19 02:04:59,580 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-19 02:04:59,581 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-19 02:04:59,581 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-19 02:04:59,581 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-19 02:04:59,581 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-19 02:04:59,581 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-19 02:04:59,582 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-19 02:04:59,582 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-19 02:04:59,582 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-19 02:04:59,582 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-19 02:04:59,582 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-19 02:04:59,582 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-19 02:04:59,582 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-19 02:04:59,583 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-19 02:04:59,583 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-19 02:04:59,583 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-19 02:04:59,583 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-19 02:04:59,584 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-19 02:04:59,584 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-19 02:04:59,584 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-19 02:04:59,584 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 -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8; [2020-08-19 02:04:59,903 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-19 02:04:59,919 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-19 02:04:59,925 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-19 02:04:59,927 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-19 02:04:59,928 INFO L275 PluginConnector]: CDTParser initialized [2020-08-19 02:04:59,928 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01-1.i [2020-08-19 02:04:59,993 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78b91758c/5227cf2555cc49e99bfc6fe62731ddaa/FLAG6229e2ee3 [2020-08-19 02:05:00,396 INFO L306 CDTParser]: Found 1 translation units. [2020-08-19 02:05:00,397 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum01-1.i [2020-08-19 02:05:00,404 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78b91758c/5227cf2555cc49e99bfc6fe62731ddaa/FLAG6229e2ee3 [2020-08-19 02:05:00,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/78b91758c/5227cf2555cc49e99bfc6fe62731ddaa [2020-08-19 02:05:00,823 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-19 02:05:00,825 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-19 02:05:00,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-19 02:05:00,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-19 02:05:00,829 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-19 02:05:00,830 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:05:00" (1/1) ... [2020-08-19 02:05:00,833 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23b1b478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:00, skipping insertion in model container [2020-08-19 02:05:00,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.08 02:05:00" (1/1) ... [2020-08-19 02:05:00,840 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-19 02:05:00,854 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-19 02:05:01,058 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:05:01,064 INFO L203 MainTranslator]: Completed pre-run [2020-08-19 02:05:01,092 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-19 02:05:01,110 INFO L208 MainTranslator]: Completed translation [2020-08-19 02:05:01,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01 WrapperNode [2020-08-19 02:05:01,112 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-19 02:05:01,112 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-19 02:05:01,113 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-19 02:05:01,113 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-19 02:05:01,127 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... [2020-08-19 02:05:01,129 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... [2020-08-19 02:05:01,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... [2020-08-19 02:05:01,135 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... [2020-08-19 02:05:01,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... [2020-08-19 02:05:01,278 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... [2020-08-19 02:05:01,279 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... [2020-08-19 02:05:01,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-19 02:05:01,281 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-19 02:05:01,281 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-19 02:05:01,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-19 02:05:01,282 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-19 02:05:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-19 02:05:01,357 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-19 02:05:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-19 02:05:01,358 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-19 02:05:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-19 02:05:01,358 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-19 02:05:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-08-19 02:05:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-19 02:05:01,359 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-19 02:05:01,360 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-19 02:05:01,540 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-19 02:05:01,540 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-19 02:05:01,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:05:01 BoogieIcfgContainer [2020-08-19 02:05:01,544 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-19 02:05:01,545 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-19 02:05:01,545 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-19 02:05:01,548 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-19 02:05:01,549 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.08 02:05:00" (1/3) ... [2020-08-19 02:05:01,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc848ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:05:01, skipping insertion in model container [2020-08-19 02:05:01,550 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.08 02:05:01" (2/3) ... [2020-08-19 02:05:01,550 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1cc848ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.08 02:05:01, skipping insertion in model container [2020-08-19 02:05:01,551 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.08 02:05:01" (3/3) ... [2020-08-19 02:05:01,552 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01-1.i [2020-08-19 02:05:01,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-19 02:05:01,570 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-19 02:05:01,585 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-19 02:05:01,643 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-19 02:05:01,643 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-19 02:05:01,643 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-19 02:05:01,643 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-19 02:05:01,644 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-19 02:05:01,644 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-19 02:05:01,644 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-19 02:05:01,644 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-19 02:05:01,689 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-08-19 02:05:01,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 02:05:01,707 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:01,707 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:01,708 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:01,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:01,716 INFO L82 PathProgramCache]: Analyzing trace with hash -721501374, now seen corresponding path program 1 times [2020-08-19 02:05:01,725 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:01,726 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [242266459] [2020-08-19 02:05:01,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:01,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:01,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:01,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:01,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:01,865 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [242266459] [2020-08-19 02:05:01,867 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:05:01,868 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-19 02:05:01,869 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321695680] [2020-08-19 02:05:01,874 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-19 02:05:01,874 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:01,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-19 02:05:01,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 02:05:01,892 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 2 states. [2020-08-19 02:05:01,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:01,916 INFO L93 Difference]: Finished difference Result 30 states and 34 transitions. [2020-08-19 02:05:01,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-19 02:05:01,917 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 10 [2020-08-19 02:05:01,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:01,927 INFO L225 Difference]: With dead ends: 30 [2020-08-19 02:05:01,927 INFO L226 Difference]: Without dead ends: 13 [2020-08-19 02:05:01,931 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-19 02:05:01,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-08-19 02:05:01,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-08-19 02:05:01,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-08-19 02:05:01,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2020-08-19 02:05:01,972 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 10 [2020-08-19 02:05:01,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:01,972 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2020-08-19 02:05:01,972 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-19 02:05:01,973 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2020-08-19 02:05:01,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-08-19 02:05:01,973 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:01,973 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:01,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-19 02:05:01,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:01,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:01,975 INFO L82 PathProgramCache]: Analyzing trace with hash -731660105, now seen corresponding path program 1 times [2020-08-19 02:05:01,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:01,975 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [449663114] [2020-08-19 02:05:01,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:02,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:02,085 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [449663114] [2020-08-19 02:05:02,086 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:05:02,086 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-19 02:05:02,086 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150099472] [2020-08-19 02:05:02,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:05:02,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:02,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:05:02,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:05:02,089 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand 5 states. [2020-08-19 02:05:02,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:02,133 INFO L93 Difference]: Finished difference Result 21 states and 23 transitions. [2020-08-19 02:05:02,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:05:02,133 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-08-19 02:05:02,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:02,134 INFO L225 Difference]: With dead ends: 21 [2020-08-19 02:05:02,135 INFO L226 Difference]: Without dead ends: 16 [2020-08-19 02:05:02,136 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:05:02,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-19 02:05:02,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-19 02:05:02,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-19 02:05:02,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-19 02:05:02,142 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 10 [2020-08-19 02:05:02,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:02,142 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-19 02:05:02,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:05:02,142 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-19 02:05:02,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-08-19 02:05:02,143 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:02,143 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:02,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-19 02:05:02,144 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:02,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:02,145 INFO L82 PathProgramCache]: Analyzing trace with hash -1637338477, now seen corresponding path program 1 times [2020-08-19 02:05:02,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:02,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807757994] [2020-08-19 02:05:02,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,403 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:02,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807757994] [2020-08-19 02:05:02,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:02,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:05:02,404 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456478238] [2020-08-19 02:05:02,405 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:05:02,405 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:02,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:05:02,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:05:02,406 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 9 states. [2020-08-19 02:05:02,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:02,526 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-08-19 02:05:02,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:05:02,527 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 13 [2020-08-19 02:05:02,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:02,529 INFO L225 Difference]: With dead ends: 28 [2020-08-19 02:05:02,529 INFO L226 Difference]: Without dead ends: 23 [2020-08-19 02:05:02,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:05:02,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-19 02:05:02,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-08-19 02:05:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-19 02:05:02,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2020-08-19 02:05:02,537 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 13 [2020-08-19 02:05:02,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:02,537 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2020-08-19 02:05:02,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:05:02,538 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2020-08-19 02:05:02,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:05:02,538 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:02,539 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:02,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-19 02:05:02,539 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:02,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:02,540 INFO L82 PathProgramCache]: Analyzing trace with hash -2110192267, now seen corresponding path program 1 times [2020-08-19 02:05:02,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:02,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844744238] [2020-08-19 02:05:02,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:02,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:02,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,576 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-08-19 02:05:02,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844744238] [2020-08-19 02:05:02,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-19 02:05:02,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-19 02:05:02,578 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955148518] [2020-08-19 02:05:02,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-19 02:05:02,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:02,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-19 02:05:02,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:05:02,580 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand 3 states. [2020-08-19 02:05:02,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:02,598 INFO L93 Difference]: Finished difference Result 28 states and 32 transitions. [2020-08-19 02:05:02,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-19 02:05:02,599 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-08-19 02:05:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:02,600 INFO L225 Difference]: With dead ends: 28 [2020-08-19 02:05:02,600 INFO L226 Difference]: Without dead ends: 17 [2020-08-19 02:05:02,601 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-19 02:05:02,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-08-19 02:05:02,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-08-19 02:05:02,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-19 02:05:02,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-08-19 02:05:02,606 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 16 [2020-08-19 02:05:02,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:02,607 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-08-19 02:05:02,607 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-19 02:05:02,607 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-08-19 02:05:02,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:05:02,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:02,608 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:02,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-19 02:05:02,609 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:02,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:02,610 INFO L82 PathProgramCache]: Analyzing trace with hash 57842105, now seen corresponding path program 2 times [2020-08-19 02:05:02,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:02,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [850895355] [2020-08-19 02:05:02,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:02,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,643 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:02,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [850895355] [2020-08-19 02:05:02,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:02,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4] total 4 [2020-08-19 02:05:02,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3546996] [2020-08-19 02:05:02,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-19 02:05:02,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:02,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-19 02:05:02,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:05:02,647 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 4 states. [2020-08-19 02:05:02,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:02,675 INFO L93 Difference]: Finished difference Result 27 states and 30 transitions. [2020-08-19 02:05:02,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-19 02:05:02,676 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-08-19 02:05:02,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:02,677 INFO L225 Difference]: With dead ends: 27 [2020-08-19 02:05:02,677 INFO L226 Difference]: Without dead ends: 19 [2020-08-19 02:05:02,678 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-08-19 02:05:02,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-19 02:05:02,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-08-19 02:05:02,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-08-19 02:05:02,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-08-19 02:05:02,684 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-08-19 02:05:02,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:02,685 INFO L479 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-08-19 02:05:02,685 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-19 02:05:02,685 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-08-19 02:05:02,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-08-19 02:05:02,686 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:02,686 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:02,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-19 02:05:02,687 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:02,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:02,687 INFO L82 PathProgramCache]: Analyzing trace with hash -1717165257, now seen corresponding path program 2 times [2020-08-19 02:05:02,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:02,688 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356527816] [2020-08-19 02:05:02,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:02,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-08-19 02:05:02,944 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356527816] [2020-08-19 02:05:02,944 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:02,945 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:05:02,945 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1496405326] [2020-08-19 02:05:02,945 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:05:02,946 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:02,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:05:02,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:05:02,946 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 10 states. [2020-08-19 02:05:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:03,149 INFO L93 Difference]: Finished difference Result 27 states and 29 transitions. [2020-08-19 02:05:03,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:05:03,151 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 16 [2020-08-19 02:05:03,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:03,153 INFO L225 Difference]: With dead ends: 27 [2020-08-19 02:05:03,155 INFO L226 Difference]: Without dead ends: 22 [2020-08-19 02:05:03,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2020-08-19 02:05:03,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-19 02:05:03,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-08-19 02:05:03,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-19 02:05:03,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-08-19 02:05:03,165 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 16 [2020-08-19 02:05:03,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:03,167 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-08-19 02:05:03,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:05:03,167 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-08-19 02:05:03,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-19 02:05:03,169 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:03,169 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:03,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-19 02:05:03,170 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:03,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:03,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1350121109, now seen corresponding path program 3 times [2020-08-19 02:05:03,171 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:03,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173623095] [2020-08-19 02:05:03,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:03,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:03,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:03,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173623095] [2020-08-19 02:05:03,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:03,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-19 02:05:03,262 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887928643] [2020-08-19 02:05:03,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-19 02:05:03,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:03,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-19 02:05:03,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:05:03,264 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-08-19 02:05:03,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:03,313 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2020-08-19 02:05:03,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-19 02:05:03,314 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-19 02:05:03,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:03,315 INFO L225 Difference]: With dead ends: 33 [2020-08-19 02:05:03,315 INFO L226 Difference]: Without dead ends: 25 [2020-08-19 02:05:03,316 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-08-19 02:05:03,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-19 02:05:03,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-08-19 02:05:03,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-19 02:05:03,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-08-19 02:05:03,324 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-08-19 02:05:03,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:03,325 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-08-19 02:05:03,325 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-19 02:05:03,325 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-08-19 02:05:03,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-19 02:05:03,327 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:03,327 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:03,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-19 02:05:03,328 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:03,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:03,328 INFO L82 PathProgramCache]: Analyzing trace with hash -452912071, now seen corresponding path program 4 times [2020-08-19 02:05:03,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:03,330 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867552389] [2020-08-19 02:05:03,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:03,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:03,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,412 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:03,412 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867552389] [2020-08-19 02:05:03,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:03,413 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-19 02:05:03,413 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131759927] [2020-08-19 02:05:03,414 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-19 02:05:03,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:03,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-19 02:05:03,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:05:03,415 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-08-19 02:05:03,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:03,454 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-08-19 02:05:03,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-19 02:05:03,456 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-08-19 02:05:03,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:03,457 INFO L225 Difference]: With dead ends: 36 [2020-08-19 02:05:03,457 INFO L226 Difference]: Without dead ends: 28 [2020-08-19 02:05:03,457 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-08-19 02:05:03,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-08-19 02:05:03,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2020-08-19 02:05:03,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-08-19 02:05:03,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 29 transitions. [2020-08-19 02:05:03,465 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 29 transitions. Word has length 22 [2020-08-19 02:05:03,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:03,468 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 29 transitions. [2020-08-19 02:05:03,468 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-19 02:05:03,468 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 29 transitions. [2020-08-19 02:05:03,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-08-19 02:05:03,469 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:03,469 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:03,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-19 02:05:03,470 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:03,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:03,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1753373675, now seen corresponding path program 5 times [2020-08-19 02:05:03,471 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:03,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1259141236] [2020-08-19 02:05:03,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:03,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:03,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,554 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:03,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1259141236] [2020-08-19 02:05:03,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:03,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-08-19 02:05:03,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [634869568] [2020-08-19 02:05:03,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-19 02:05:03,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:03,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-19 02:05:03,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:05:03,557 INFO L87 Difference]: Start difference. First operand 27 states and 29 transitions. Second operand 7 states. [2020-08-19 02:05:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:03,643 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-08-19 02:05:03,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-19 02:05:03,643 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-08-19 02:05:03,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:03,644 INFO L225 Difference]: With dead ends: 39 [2020-08-19 02:05:03,644 INFO L226 Difference]: Without dead ends: 31 [2020-08-19 02:05:03,645 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2020-08-19 02:05:03,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-19 02:05:03,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-08-19 02:05:03,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-08-19 02:05:03,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 32 transitions. [2020-08-19 02:05:03,650 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 32 transitions. Word has length 25 [2020-08-19 02:05:03,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:03,651 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 32 transitions. [2020-08-19 02:05:03,651 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-19 02:05:03,651 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 32 transitions. [2020-08-19 02:05:03,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-19 02:05:03,652 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:03,652 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:03,652 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-08-19 02:05:03,653 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:03,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1094958777, now seen corresponding path program 6 times [2020-08-19 02:05:03,653 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:03,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [702797232] [2020-08-19 02:05:03,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:03,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:03,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,718 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:03,719 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [702797232] [2020-08-19 02:05:03,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:03,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-19 02:05:03,719 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429690507] [2020-08-19 02:05:03,720 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-19 02:05:03,720 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:03,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-19 02:05:03,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:05:03,721 INFO L87 Difference]: Start difference. First operand 30 states and 32 transitions. Second operand 8 states. [2020-08-19 02:05:03,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:03,770 INFO L93 Difference]: Finished difference Result 42 states and 46 transitions. [2020-08-19 02:05:03,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-19 02:05:03,770 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2020-08-19 02:05:03,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:03,771 INFO L225 Difference]: With dead ends: 42 [2020-08-19 02:05:03,772 INFO L226 Difference]: Without dead ends: 34 [2020-08-19 02:05:03,772 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2020-08-19 02:05:03,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-19 02:05:03,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-08-19 02:05:03,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-08-19 02:05:03,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2020-08-19 02:05:03,779 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 28 [2020-08-19 02:05:03,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:03,779 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2020-08-19 02:05:03,779 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-19 02:05:03,780 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2020-08-19 02:05:03,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-19 02:05:03,781 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:03,781 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:03,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-08-19 02:05:03,781 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:03,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:03,782 INFO L82 PathProgramCache]: Analyzing trace with hash 98169237, now seen corresponding path program 7 times [2020-08-19 02:05:03,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:03,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1365033442] [2020-08-19 02:05:03,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:03,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:03,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:03,900 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 13 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:03,901 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1365033442] [2020-08-19 02:05:03,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:03,901 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-08-19 02:05:03,902 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120409716] [2020-08-19 02:05:03,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-19 02:05:03,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:03,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-19 02:05:03,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:05:03,903 INFO L87 Difference]: Start difference. First operand 33 states and 35 transitions. Second operand 9 states. [2020-08-19 02:05:03,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:03,960 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-08-19 02:05:03,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-19 02:05:03,960 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 31 [2020-08-19 02:05:03,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:03,961 INFO L225 Difference]: With dead ends: 45 [2020-08-19 02:05:03,962 INFO L226 Difference]: Without dead ends: 37 [2020-08-19 02:05:03,962 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2020-08-19 02:05:03,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-19 02:05:03,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 36. [2020-08-19 02:05:03,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-19 02:05:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 38 transitions. [2020-08-19 02:05:03,968 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 38 transitions. Word has length 31 [2020-08-19 02:05:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:03,969 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 38 transitions. [2020-08-19 02:05:03,969 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-19 02:05:03,969 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 38 transitions. [2020-08-19 02:05:03,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-19 02:05:03,970 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:03,970 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:03,971 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-08-19 02:05:03,971 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:03,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:03,971 INFO L82 PathProgramCache]: Analyzing trace with hash 144867641, now seen corresponding path program 8 times [2020-08-19 02:05:03,972 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:03,972 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [253154841] [2020-08-19 02:05:03,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:04,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:04,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:04,122 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 15 proven. 77 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:04,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [253154841] [2020-08-19 02:05:04,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:04,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-19 02:05:04,124 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419313978] [2020-08-19 02:05:04,125 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-19 02:05:04,125 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:04,125 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-19 02:05:04,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:05:04,126 INFO L87 Difference]: Start difference. First operand 36 states and 38 transitions. Second operand 10 states. [2020-08-19 02:05:04,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:04,190 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-08-19 02:05:04,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-08-19 02:05:04,191 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-08-19 02:05:04,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:04,192 INFO L225 Difference]: With dead ends: 48 [2020-08-19 02:05:04,192 INFO L226 Difference]: Without dead ends: 40 [2020-08-19 02:05:04,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=45, Unknown=0, NotChecked=0, Total=90 [2020-08-19 02:05:04,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-08-19 02:05:04,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-08-19 02:05:04,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-19 02:05:04,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 41 transitions. [2020-08-19 02:05:04,203 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 41 transitions. Word has length 34 [2020-08-19 02:05:04,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:04,203 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 41 transitions. [2020-08-19 02:05:04,203 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-19 02:05:04,203 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 41 transitions. [2020-08-19 02:05:04,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-19 02:05:04,209 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:04,209 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:04,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-08-19 02:05:04,210 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:04,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:04,210 INFO L82 PathProgramCache]: Analyzing trace with hash -232382699, now seen corresponding path program 9 times [2020-08-19 02:05:04,211 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:04,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804537793] [2020-08-19 02:05:04,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:04,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:04,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-19 02:05:04,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-19 02:05:04,306 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 17 proven. 100 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-19 02:05:04,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804537793] [2020-08-19 02:05:04,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-19 02:05:04,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-19 02:05:04,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717383315] [2020-08-19 02:05:04,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-08-19 02:05:04,307 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-19 02:05:04,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-08-19 02:05:04,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:05:04,308 INFO L87 Difference]: Start difference. First operand 39 states and 41 transitions. Second operand 11 states. [2020-08-19 02:05:04,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-19 02:05:04,361 INFO L93 Difference]: Finished difference Result 51 states and 55 transitions. [2020-08-19 02:05:04,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-19 02:05:04,362 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-08-19 02:05:04,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-19 02:05:04,362 INFO L225 Difference]: With dead ends: 51 [2020-08-19 02:05:04,363 INFO L226 Difference]: Without dead ends: 43 [2020-08-19 02:05:04,363 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=55, Invalid=55, Unknown=0, NotChecked=0, Total=110 [2020-08-19 02:05:04,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-08-19 02:05:04,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-08-19 02:05:04,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-19 02:05:04,369 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 44 transitions. [2020-08-19 02:05:04,369 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 44 transitions. Word has length 37 [2020-08-19 02:05:04,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-19 02:05:04,369 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 44 transitions. [2020-08-19 02:05:04,369 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-08-19 02:05:04,369 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 44 transitions. [2020-08-19 02:05:04,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-08-19 02:05:04,370 INFO L414 BasicCegarLoop]: Found error trace [2020-08-19 02:05:04,371 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-19 02:05:04,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-08-19 02:05:04,371 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-19 02:05:04,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-19 02:05:04,371 INFO L82 PathProgramCache]: Analyzing trace with hash 1032151993, now seen corresponding path program 10 times [2020-08-19 02:05:04,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-19 02:05:04,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [306966891] [2020-08-19 02:05:04,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-19 02:05:04,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-19 02:05:04,387 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-19 02:05:04,387 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-19 02:05:04,391 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-08-19 02:05:04,407 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.08 02:05:04 BoogieIcfgContainer [2020-08-19 02:05:04,408 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-19 02:05:04,410 INFO L168 Benchmark]: Toolchain (without parser) took 3584.74 ms. Allocated memory was 147.8 MB in the beginning and 242.2 MB in the end (delta: 94.4 MB). Free memory was 104.5 MB in the beginning and 163.6 MB in the end (delta: -59.1 MB). Peak memory consumption was 35.3 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:04,411 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-19 02:05:04,411 INFO L168 Benchmark]: CACSL2BoogieTranslator took 286.59 ms. Allocated memory is still 147.8 MB. Free memory was 104.3 MB in the beginning and 94.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:04,412 INFO L168 Benchmark]: Boogie Preprocessor took 168.45 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 94.6 MB in the beginning and 186.1 MB in the end (delta: -91.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:04,413 INFO L168 Benchmark]: RCFGBuilder took 262.86 ms. Allocated memory is still 207.1 MB. Free memory was 186.1 MB in the beginning and 173.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:04,413 INFO L168 Benchmark]: TraceAbstraction took 2862.46 ms. Allocated memory was 207.1 MB in the beginning and 242.2 MB in the end (delta: 35.1 MB). Free memory was 173.3 MB in the beginning and 163.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 44.8 MB. Max. memory is 7.1 GB. [2020-08-19 02:05:04,417 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 147.8 MB. Free memory was 122.4 MB in the beginning and 122.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 286.59 ms. Allocated memory is still 147.8 MB. Free memory was 104.3 MB in the beginning and 94.6 MB in the end (delta: 9.7 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 168.45 ms. Allocated memory was 147.8 MB in the beginning and 207.1 MB in the end (delta: 59.2 MB). Free memory was 94.6 MB in the beginning and 186.1 MB in the end (delta: -91.5 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 262.86 ms. Allocated memory is still 207.1 MB. Free memory was 186.1 MB in the beginning and 173.9 MB in the end (delta: 12.2 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2862.46 ms. Allocated memory was 207.1 MB in the beginning and 242.2 MB in the end (delta: 35.1 MB). Free memory was 173.3 MB in the beginning and 163.6 MB in the end (delta: 9.6 MB). Peak memory consumption was 44.8 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 [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND TRUE i<10 [L15] sn = sn + (2) [L13] i++ [L13] COND TRUE i<=n [L14] COND FALSE !(i<10) [L13] i++ [L13] COND FALSE !(i<=n) [L17] CALL __VERIFIER_assert(sn==n*(2) || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.7s, OverallIterations: 14, TraceHistogramMax: 10, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 147 SDtfs, 59 SDslu, 484 SDs, 0 SdLazy, 391 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 124 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred in iteration=13, 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, 13 MinimizatonAttempts, 12 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 317 NumberOfCodeBlocks, 317 NumberOfCodeBlocksAsserted, 14 NumberOfCheckSat, 264 ConstructedInterpolants, 0 QuantifiedInterpolants, 16404 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 13 InterpolantComputations, 3 PerfectInterpolantSequences, 86/415 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...