/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=HIGHLEXORDER -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 19:38:42,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 19:38:42,463 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 19:38:42,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-18 19:38:42,501 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 19:38:42,502 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 19:38:42,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 19:38:42,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 19:38:42,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 19:38:42,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 19:38:42,509 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 19:38:42,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 19:38:42,514 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 19:38:42,516 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 19:38:42,517 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 19:38:42,518 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 19:38:42,524 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-18 19:38:42,545 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 19:38:42,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 19:38:42,546 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 19:38:42,547 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 [2020-08-18 19:38:42,592 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 19:38:42,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 19:38:42,593 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 19:38:42,594 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 19:38:42,594 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 19:38:42,594 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 19:38:42,594 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 19:38:42,594 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 19:38:42,595 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 19:38:42,595 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 19:38:42,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 19:38:42,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 19:38:42,596 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 19:38:42,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 19:38:42,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 19:38:42,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 19:38:42,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 19:38:42,597 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 19:38:42,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 19:38:42,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 19:38:42,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 19:38:42,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 19:38:42,598 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 19:38:42,599 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 19:38:42,599 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 19:38:42,599 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 19:38:42,599 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 19:38:42,599 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 19:38:42,600 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 19:38:42,600 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=HIGHLEXORDER; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=HIGHLEXORDER; [2020-08-18 19:38:42,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 19:38:42,913 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 19:38:42,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 19:38:42,918 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 19:38:42,918 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 19:38:42,919 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-18 19:38:42,978 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a23840be3/558d2b0c99f94d2fa5438e24e57723da/FLAGbfd96fd02 [2020-08-18 19:38:43,372 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 19:38:43,375 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/sumt3.c [2020-08-18 19:38:43,382 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a23840be3/558d2b0c99f94d2fa5438e24e57723da/FLAGbfd96fd02 [2020-08-18 19:38:43,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a23840be3/558d2b0c99f94d2fa5438e24e57723da [2020-08-18 19:38:43,753 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 19:38:43,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 19:38:43,756 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 19:38:43,756 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 19:38:43,759 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 19:38:43,760 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:38:43" (1/1) ... [2020-08-18 19:38:43,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a5abf64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:43, skipping insertion in model container [2020-08-18 19:38:43,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 07:38:43" (1/1) ... [2020-08-18 19:38:43,771 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 19:38:43,788 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 19:38:43,980 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:38:43,986 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 19:38:44,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 19:38:44,032 INFO L208 MainTranslator]: Completed translation [2020-08-18 19:38:44,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44 WrapperNode [2020-08-18 19:38:44,033 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 19:38:44,033 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 19:38:44,034 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 19:38:44,034 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 19:38:44,048 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (1/1) ... [2020-08-18 19:38:44,048 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (1/1) ... [2020-08-18 19:38:44,054 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (1/1) ... [2020-08-18 19:38:44,054 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (1/1) ... [2020-08-18 19:38:44,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (1/1) ... [2020-08-18 19:38:44,137 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (1/1) ... [2020-08-18 19:38:44,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (1/1) ... [2020-08-18 19:38:44,140 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 19:38:44,140 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 19:38:44,140 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 19:38:44,140 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 19:38:44,141 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (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 [2020-08-18 19:38:44,201 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 19:38:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 19:38:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-18 19:38:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-18 19:38:44,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 19:38:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 19:38:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-18 19:38:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-18 19:38:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-18 19:38:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 19:38:44,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 19:38:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 19:38:44,204 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 19:38:44,430 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 19:38:44,431 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-18 19:38:44,435 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:38:44 BoogieIcfgContainer [2020-08-18 19:38:44,436 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 19:38:44,449 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 19:38:44,449 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 19:38:44,452 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 19:38:44,453 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 07:38:43" (1/3) ... [2020-08-18 19:38:44,453 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba3e58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:38:44, skipping insertion in model container [2020-08-18 19:38:44,454 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 07:38:44" (2/3) ... [2020-08-18 19:38:44,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2ba3e58c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 07:38:44, skipping insertion in model container [2020-08-18 19:38:44,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 07:38:44" (3/3) ... [2020-08-18 19:38:44,469 INFO L109 eAbstractionObserver]: Analyzing ICFG sumt3.c [2020-08-18 19:38:44,482 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 19:38:44,489 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 19:38:44,503 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 19:38:44,536 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 19:38:44,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 19:38:44,536 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 19:38:44,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 19:38:44,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 19:38:44,537 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 19:38:44,537 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 19:38:44,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 19:38:44,562 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-18 19:38:44,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 19:38:44,567 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:44,568 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:44,569 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:44,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:44,574 INFO L82 PathProgramCache]: Analyzing trace with hash -320041890, now seen corresponding path program 1 times [2020-08-18 19:38:44,580 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:44,581 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970169693] [2020-08-18 19:38:44,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:44,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:44,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:44,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:44,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970169693] [2020-08-18 19:38:44,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:38:44,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-18 19:38:44,741 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68776457] [2020-08-18 19:38:44,746 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-18 19:38:44,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:44,761 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-18 19:38:44,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:38:44,764 INFO L87 Difference]: Start difference. First operand 23 states. Second operand 3 states. [2020-08-18 19:38:44,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:44,820 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2020-08-18 19:38:44,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-18 19:38:44,823 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-08-18 19:38:44,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:44,831 INFO L225 Difference]: With dead ends: 35 [2020-08-18 19:38:44,831 INFO L226 Difference]: Without dead ends: 16 [2020-08-18 19:38:44,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-18 19:38:44,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-08-18 19:38:44,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-08-18 19:38:44,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-08-18 19:38:44,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2020-08-18 19:38:44,874 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 12 [2020-08-18 19:38:44,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:44,874 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2020-08-18 19:38:44,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-18 19:38:44,875 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2020-08-18 19:38:44,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 19:38:44,875 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:44,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:44,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 19:38:44,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:44,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:44,877 INFO L82 PathProgramCache]: Analyzing trace with hash -334818226, now seen corresponding path program 1 times [2020-08-18 19:38:44,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:44,877 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216480375] [2020-08-18 19:38:44,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:44,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:45,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:45,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:45,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:45,218 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216480375] [2020-08-18 19:38:45,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 19:38:45,219 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 19:38:45,219 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948309735] [2020-08-18 19:38:45,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:38:45,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:45,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:38:45,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:38:45,222 INFO L87 Difference]: Start difference. First operand 16 states and 18 transitions. Second operand 7 states. [2020-08-18 19:38:45,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:45,408 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2020-08-18 19:38:45,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-18 19:38:45,409 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-18 19:38:45,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:45,411 INFO L225 Difference]: With dead ends: 24 [2020-08-18 19:38:45,411 INFO L226 Difference]: Without dead ends: 19 [2020-08-18 19:38:45,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:38:45,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-08-18 19:38:45,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-08-18 19:38:45,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-08-18 19:38:45,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 19 transitions. [2020-08-18 19:38:45,420 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 19 transitions. Word has length 12 [2020-08-18 19:38:45,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:45,420 INFO L479 AbstractCegarLoop]: Abstraction has 17 states and 19 transitions. [2020-08-18 19:38:45,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:38:45,421 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 19 transitions. [2020-08-18 19:38:45,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-08-18 19:38:45,422 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:45,422 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:45,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 19:38:45,423 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:45,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:45,423 INFO L82 PathProgramCache]: Analyzing trace with hash -135124987, now seen corresponding path program 1 times [2020-08-18 19:38:45,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:45,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187533550] [2020-08-18 19:38:45,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:45,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:46,029 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:46,029 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187533550] [2020-08-18 19:38:46,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:46,030 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-08-18 19:38:46,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489507327] [2020-08-18 19:38:46,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-08-18 19:38:46,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:46,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-08-18 19:38:46,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:38:46,034 INFO L87 Difference]: Start difference. First operand 17 states and 19 transitions. Second operand 12 states. [2020-08-18 19:38:48,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:48,471 INFO L93 Difference]: Finished difference Result 35 states and 43 transitions. [2020-08-18 19:38:48,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-18 19:38:48,473 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 15 [2020-08-18 19:38:48,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:48,475 INFO L225 Difference]: With dead ends: 35 [2020-08-18 19:38:48,475 INFO L226 Difference]: Without dead ends: 23 [2020-08-18 19:38:48,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2020-08-18 19:38:48,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-18 19:38:48,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-08-18 19:38:48,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-08-18 19:38:48,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-08-18 19:38:48,485 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 15 [2020-08-18 19:38:48,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:48,486 INFO L479 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-08-18 19:38:48,486 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-08-18 19:38:48,486 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-08-18 19:38:48,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 19:38:48,489 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:48,489 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:48,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 19:38:48,490 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:48,491 INFO L82 PathProgramCache]: Analyzing trace with hash 396453102, now seen corresponding path program 2 times [2020-08-18 19:38:48,491 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:48,491 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1304834764] [2020-08-18 19:38:48,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:48,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:48,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1304834764] [2020-08-18 19:38:48,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:48,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 19:38:48,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126388037] [2020-08-18 19:38:48,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 19:38:48,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:48,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 19:38:48,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:38:48,799 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 7 states. [2020-08-18 19:38:48,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:48,941 INFO L93 Difference]: Finished difference Result 31 states and 36 transitions. [2020-08-18 19:38:48,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:38:48,942 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-08-18 19:38:48,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:48,943 INFO L225 Difference]: With dead ends: 31 [2020-08-18 19:38:48,943 INFO L226 Difference]: Without dead ends: 22 [2020-08-18 19:38:48,945 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-08-18 19:38:48,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-08-18 19:38:48,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2020-08-18 19:38:48,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-08-18 19:38:48,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 23 transitions. [2020-08-18 19:38:48,956 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 23 transitions. Word has length 18 [2020-08-18 19:38:48,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:48,956 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 23 transitions. [2020-08-18 19:38:48,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 19:38:48,957 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 23 transitions. [2020-08-18 19:38:48,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 19:38:48,958 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:48,958 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:48,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-18 19:38:48,959 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:48,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:48,960 INFO L82 PathProgramCache]: Analyzing trace with hash -291244452, now seen corresponding path program 1 times [2020-08-18 19:38:48,960 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:48,961 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932651261] [2020-08-18 19:38:48,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:49,116 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:49,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932651261] [2020-08-18 19:38:49,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:49,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-08-18 19:38:49,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289150154] [2020-08-18 19:38:49,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-18 19:38:49,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:49,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-18 19:38:49,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-18 19:38:49,121 INFO L87 Difference]: Start difference. First operand 21 states and 23 transitions. Second operand 5 states. [2020-08-18 19:38:49,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:49,209 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-08-18 19:38:49,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-18 19:38:49,210 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-08-18 19:38:49,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:49,211 INFO L225 Difference]: With dead ends: 32 [2020-08-18 19:38:49,211 INFO L226 Difference]: Without dead ends: 23 [2020-08-18 19:38:49,212 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-08-18 19:38:49,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-08-18 19:38:49,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2020-08-18 19:38:49,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-08-18 19:38:49,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-08-18 19:38:49,218 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 19 [2020-08-18 19:38:49,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:49,219 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-08-18 19:38:49,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-18 19:38:49,219 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-08-18 19:38:49,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-08-18 19:38:49,220 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:49,220 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:49,221 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-18 19:38:49,221 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:49,221 INFO L82 PathProgramCache]: Analyzing trace with hash 1483762910, now seen corresponding path program 1 times [2020-08-18 19:38:49,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:49,222 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [351471453] [2020-08-18 19:38:49,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:49,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:49,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:49,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [351471453] [2020-08-18 19:38:49,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:49,894 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-08-18 19:38:49,894 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051623271] [2020-08-18 19:38:49,895 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-18 19:38:49,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:49,895 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-18 19:38:49,896 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-08-18 19:38:49,896 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 14 states. [2020-08-18 19:38:54,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:54,525 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2020-08-18 19:38:54,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-08-18 19:38:54,529 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 19 [2020-08-18 19:38:54,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:54,530 INFO L225 Difference]: With dead ends: 31 [2020-08-18 19:38:54,530 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 19:38:54,532 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-08-18 19:38:54,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 19:38:54,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-08-18 19:38:54,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-08-18 19:38:54,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-08-18 19:38:54,546 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 19 [2020-08-18 19:38:54,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:54,546 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-08-18 19:38:54,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-18 19:38:54,546 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-08-18 19:38:54,547 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-18 19:38:54,547 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:54,547 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:54,548 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-08-18 19:38:54,552 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:54,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:54,552 INFO L82 PathProgramCache]: Analyzing trace with hash 498025845, now seen corresponding path program 2 times [2020-08-18 19:38:54,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:54,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051553930] [2020-08-18 19:38:54,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:54,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:54,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:54,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:54,822 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 19:38:54,824 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051553930] [2020-08-18 19:38:54,824 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:54,825 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-08-18 19:38:54,825 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115771378] [2020-08-18 19:38:54,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-18 19:38:54,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:54,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-18 19:38:54,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-08-18 19:38:54,826 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-08-18 19:38:59,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:59,165 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2020-08-18 19:38:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 19:38:59,166 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 22 [2020-08-18 19:38:59,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:59,167 INFO L225 Difference]: With dead ends: 35 [2020-08-18 19:38:59,167 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 19:38:59,167 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-08-18 19:38:59,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 19:38:59,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 25. [2020-08-18 19:38:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 19:38:59,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-08-18 19:38:59,174 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 22 [2020-08-18 19:38:59,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:59,174 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-08-18 19:38:59,175 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-18 19:38:59,175 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-08-18 19:38:59,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-18 19:38:59,175 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 19:38:59,176 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 19:38:59,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-08-18 19:38:59,176 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 19:38:59,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 19:38:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash -1437456715, now seen corresponding path program 1 times [2020-08-18 19:38:59,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 19:38:59,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623243553] [2020-08-18 19:38:59,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 19:38:59,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:59,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 19:38:59,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 19:38:59,406 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-08-18 19:38:59,406 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623243553] [2020-08-18 19:38:59,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 19:38:59,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-08-18 19:38:59,407 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969136391] [2020-08-18 19:38:59,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-18 19:38:59,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 19:38:59,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-18 19:38:59,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-18 19:38:59,408 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 8 states. [2020-08-18 19:38:59,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 19:38:59,517 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2020-08-18 19:38:59,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-18 19:38:59,517 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-08-18 19:38:59,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 19:38:59,518 INFO L225 Difference]: With dead ends: 25 [2020-08-18 19:38:59,518 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 19:38:59,519 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-08-18 19:38:59,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 19:38:59,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 19:38:59,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 19:38:59,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 19:38:59,520 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 23 [2020-08-18 19:38:59,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 19:38:59,520 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 19:38:59,520 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-18 19:38:59,520 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 19:38:59,520 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 19:38:59,520 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-08-18 19:38:59,523 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 19:38:59,647 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 19:38:59,647 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~SIZE~0 |old(~SIZE~0)|) [2020-08-18 19:38:59,647 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2020-08-18 19:38:59,648 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 5) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 14 34) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-08-18 19:38:59,648 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 14 34) no Hoare annotation was computed. [2020-08-18 19:38:59,649 INFO L268 CegarLoopResult]: For program point L32(line 32) no Hoare annotation was computed. [2020-08-18 19:38:59,649 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 14 34) the Hoare annotation is: true [2020-08-18 19:38:59,649 INFO L268 CegarLoopResult]: For program point L26(lines 26 29) no Hoare annotation was computed. [2020-08-18 19:38:59,649 INFO L268 CegarLoopResult]: For program point L24(lines 24 29) no Hoare annotation was computed. [2020-08-18 19:38:59,649 INFO L268 CegarLoopResult]: For program point L26-2(lines 24 29) no Hoare annotation was computed. [2020-08-18 19:38:59,649 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 31) the Hoare annotation is: (or (let ((.cse0 (+ main_~i~0 main_~j~0 main_~k~0))) (and (<= main_~l~0 .cse0) (<= .cse0 main_~l~0))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-18 19:38:59,650 INFO L264 CegarLoopResult]: At program point L22-3(lines 22 31) the Hoare annotation is: (or (let ((.cse2 (div (+ main_~i~0 main_~j~0 main_~k~0) 4294967296)) (.cse3 (div main_~l~0 4294967296))) (let ((.cse1 (* 4294967296 .cse3)) (.cse0 (+ main_~l~0 (* 4294967296 .cse2)))) (and (< .cse0 (+ main_~i~0 main_~j~0 main_~k~0 .cse1 1)) (< .cse2 (+ .cse3 1)) (<= (+ main_~i~0 main_~j~0 main_~k~0 .cse1) .cse0)))) (not (<= ~SIZE~0 20000001)) (not (<= 20000001 ~SIZE~0))) [2020-08-18 19:38:59,650 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-18 19:38:59,651 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-08-18 19:38:59,651 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-08-18 19:38:59,651 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-08-18 19:38:59,651 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-08-18 19:38:59,651 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-08-18 19:38:59,674 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 07:38:59 BoogieIcfgContainer [2020-08-18 19:38:59,674 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 19:38:59,681 INFO L168 Benchmark]: Toolchain (without parser) took 15921.86 ms. Allocated memory was 140.0 MB in the beginning and 245.9 MB in the end (delta: 105.9 MB). Free memory was 103.1 MB in the beginning and 164.0 MB in the end (delta: -60.9 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:38:59,682 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-18 19:38:59,683 INFO L168 Benchmark]: CACSL2BoogieTranslator took 277.40 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-18 19:38:59,685 INFO L168 Benchmark]: Boogie Preprocessor took 106.28 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:38:59,687 INFO L168 Benchmark]: RCFGBuilder took 295.65 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 167.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. [2020-08-18 19:38:59,693 INFO L168 Benchmark]: TraceAbstraction took 15225.93 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 167.2 MB in the beginning and 164.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. [2020-08-18 19:38:59,698 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 277.40 ms. Allocated memory is still 140.0 MB. Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 106.28 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 182.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 295.65 ms. Allocated memory is still 202.9 MB. Free memory was 182.0 MB in the beginning and 167.9 MB in the end (delta: 14.1 MB). Peak memory consumption was 14.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15225.93 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 167.2 MB in the beginning and 164.0 MB in the end (delta: 3.2 MB). Peak memory consumption was 46.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: ((l <= i + j + k && i + j + k <= l) || !(SIZE <= 20000001)) || !(20000001 <= SIZE) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 14.9s, OverallIterations: 8, TraceHistogramMax: 3, AutomataDifference: 12.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 95 SDtfs, 180 SDslu, 169 SDs, 0 SdLazy, 378 SolverSat, 69 SolverUnsat, 5 SolverUnknown, 0 SolverNotchecked, 10.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 103 GetRequests, 24 SyntacticMatches, 4 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 10 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 15 PreInvPairs, 22 NumberOfFragments, 98 HoareAnnotationTreeSize, 15 FomulaSimplifications, 414 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 90 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 2.2s InterpolantComputationTime, 140 NumberOfCodeBlocks, 140 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 26609 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 21/41 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...