/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/bhmr2007.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 14:55:41,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 14:55:41,632 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 14:55:41,646 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 14:55:41,647 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 14:55:41,648 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 14:55:41,649 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 14:55:41,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 14:55:41,657 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 14:55:41,658 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 14:55:41,661 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 14:55:41,664 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 14:55:41,665 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 14:55:41,666 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 14:55:41,671 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 14:55:41,673 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 14:55:41,677 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 14:55:41,678 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 14:55:41,683 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 14:55:41,686 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 14:55:41,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 14:55:41,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 14:55:41,690 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 14:55:41,691 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 14:55:41,694 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 14:55:41,703 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 14:55:41,704 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 14:55:41,705 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 14:55:41,706 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 14:55:41,717 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 14:55:41,717 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 14:55:41,718 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 14:55:41,718 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 14:55:41,719 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 14:55:41,719 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 14:55:41,719 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 14:55:41,720 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 14:55:41,720 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 14:55:41,720 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 14:55:41,720 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 14:55:41,721 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 14:55:41,721 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 14:55:41,721 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 14:55:41,721 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 14:55:41,721 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 14:55:41,722 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 14:55:41,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 14:55:41,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:55:41,722 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 14:55:41,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 14:55:41,723 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 14:55:41,723 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 14:55:42,022 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 14:55:42,045 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 14:55:42,049 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 14:55:42,051 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 14:55:42,051 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 14:55:42,052 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-07-17 14:55:42,121 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294aa08e0/746c50ce03044644b89ee936a78949c7/FLAG9676030db [2020-07-17 14:55:42,624 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 14:55:42,624 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/bhmr2007.i [2020-07-17 14:55:42,630 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294aa08e0/746c50ce03044644b89ee936a78949c7/FLAG9676030db [2020-07-17 14:55:42,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/294aa08e0/746c50ce03044644b89ee936a78949c7 [2020-07-17 14:55:42,952 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 14:55:42,956 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 14:55:42,958 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 14:55:42,958 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 14:55:42,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 14:55:42,963 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:55:42" (1/1) ... [2020-07-17 14:55:42,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6bfc0b39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:42, skipping insertion in model container [2020-07-17 14:55:42,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 02:55:42" (1/1) ... [2020-07-17 14:55:42,975 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 14:55:42,998 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 14:55:43,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:55:43,184 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 14:55:43,206 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 14:55:43,225 INFO L208 MainTranslator]: Completed translation [2020-07-17 14:55:43,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43 WrapperNode [2020-07-17 14:55:43,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 14:55:43,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 14:55:43,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 14:55:43,227 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 14:55:43,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... [2020-07-17 14:55:43,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... [2020-07-17 14:55:43,250 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... [2020-07-17 14:55:43,250 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... [2020-07-17 14:55:43,255 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... [2020-07-17 14:55:43,261 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... [2020-07-17 14:55:43,266 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... [2020-07-17 14:55:43,272 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 14:55:43,273 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 14:55:43,273 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 14:55:43,273 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 14:55:43,276 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 14:55:43,479 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 14:55:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 14:55:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-17 14:55:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-17 14:55:43,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 14:55:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 14:55:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 14:55:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-17 14:55:43,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-17 14:55:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 14:55:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 14:55:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 14:55:43,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 14:55:43,730 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 14:55:43,731 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-17 14:55:43,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:55:43 BoogieIcfgContainer [2020-07-17 14:55:43,735 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 14:55:43,737 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 14:55:43,737 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 14:55:43,741 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 14:55:43,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 02:55:42" (1/3) ... [2020-07-17 14:55:43,742 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676198ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:55:43, skipping insertion in model container [2020-07-17 14:55:43,742 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 02:55:43" (2/3) ... [2020-07-17 14:55:43,743 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@676198ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 02:55:43, skipping insertion in model container [2020-07-17 14:55:43,743 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 02:55:43" (3/3) ... [2020-07-17 14:55:43,745 INFO L109 eAbstractionObserver]: Analyzing ICFG bhmr2007.i [2020-07-17 14:55:43,759 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 14:55:43,767 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 14:55:43,784 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 14:55:43,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 14:55:43,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 14:55:43,815 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 14:55:43,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 14:55:43,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 14:55:43,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 14:55:43,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 14:55:43,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 14:55:43,842 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-17 14:55:43,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 14:55:43,856 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:43,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:43,859 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:43,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:43,868 INFO L82 PathProgramCache]: Analyzing trace with hash 317967837, now seen corresponding path program 1 times [2020-07-17 14:55:43,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:43,882 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1986991007] [2020-07-17 14:55:43,883 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:44,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:44,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:55:44,276 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:44,279 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1986991007] [2020-07-17 14:55:44,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:44,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 14:55:44,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393733176] [2020-07-17 14:55:44,289 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 14:55:44,289 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:44,302 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 14:55:44,303 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-17 14:55:44,305 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 9 states. [2020-07-17 14:55:44,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:44,611 INFO L93 Difference]: Finished difference Result 70 states and 80 transitions. [2020-07-17 14:55:44,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 14:55:44,613 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-07-17 14:55:44,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:44,623 INFO L225 Difference]: With dead ends: 70 [2020-07-17 14:55:44,624 INFO L226 Difference]: Without dead ends: 40 [2020-07-17 14:55:44,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-07-17 14:55:44,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-17 14:55:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 31. [2020-07-17 14:55:44,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-07-17 14:55:44,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-07-17 14:55:44,678 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 20 [2020-07-17 14:55:44,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:44,679 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-07-17 14:55:44,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 14:55:44,679 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-07-17 14:55:44,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 14:55:44,680 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:44,681 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:44,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 14:55:44,682 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:44,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:44,682 INFO L82 PathProgramCache]: Analyzing trace with hash -628039010, now seen corresponding path program 1 times [2020-07-17 14:55:44,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:44,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [92982859] [2020-07-17 14:55:44,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:45,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:45,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:55:45,088 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:45,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [92982859] [2020-07-17 14:55:45,089 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:45,089 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 14:55:45,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964836228] [2020-07-17 14:55:45,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 14:55:45,091 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:45,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 14:55:45,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-07-17 14:55:45,092 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 12 states. [2020-07-17 14:55:45,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:45,413 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-07-17 14:55:45,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 14:55:45,414 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 27 [2020-07-17 14:55:45,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:45,416 INFO L225 Difference]: With dead ends: 53 [2020-07-17 14:55:45,416 INFO L226 Difference]: Without dead ends: 48 [2020-07-17 14:55:45,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-07-17 14:55:45,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-07-17 14:55:45,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 38. [2020-07-17 14:55:45,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-07-17 14:55:45,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 40 transitions. [2020-07-17 14:55:45,430 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 40 transitions. Word has length 27 [2020-07-17 14:55:45,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:45,430 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 40 transitions. [2020-07-17 14:55:45,430 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 14:55:45,431 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 40 transitions. [2020-07-17 14:55:45,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-17 14:55:45,432 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:45,432 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:45,432 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 14:55:45,433 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:45,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:45,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1791276066, now seen corresponding path program 1 times [2020-07-17 14:55:45,433 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:45,434 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1311413781] [2020-07-17 14:55:45,434 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:47,614 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 77 [2020-07-17 14:55:47,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:47,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:47,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:55:48,055 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:48,056 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1311413781] [2020-07-17 14:55:48,056 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:48,057 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 14:55:48,057 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080140517] [2020-07-17 14:55:48,058 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 14:55:48,058 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:48,058 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 14:55:48,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2020-07-17 14:55:48,059 INFO L87 Difference]: Start difference. First operand 38 states and 40 transitions. Second operand 14 states. [2020-07-17 14:55:48,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:48,431 INFO L93 Difference]: Finished difference Result 56 states and 59 transitions. [2020-07-17 14:55:48,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-07-17 14:55:48,431 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 27 [2020-07-17 14:55:48,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:48,433 INFO L225 Difference]: With dead ends: 56 [2020-07-17 14:55:48,433 INFO L226 Difference]: Without dead ends: 51 [2020-07-17 14:55:48,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=122, Invalid=478, Unknown=0, NotChecked=0, Total=600 [2020-07-17 14:55:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-07-17 14:55:48,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 45. [2020-07-17 14:55:48,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-07-17 14:55:48,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 48 transitions. [2020-07-17 14:55:48,444 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 48 transitions. Word has length 27 [2020-07-17 14:55:48,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:48,445 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 48 transitions. [2020-07-17 14:55:48,445 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 14:55:48,445 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 48 transitions. [2020-07-17 14:55:48,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 14:55:48,446 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:48,446 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:48,447 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 14:55:48,447 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:48,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:48,447 INFO L82 PathProgramCache]: Analyzing trace with hash -1600642371, now seen corresponding path program 2 times [2020-07-17 14:55:48,448 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:48,448 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885962199] [2020-07-17 14:55:48,448 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:48,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:48,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:55:48,764 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:48,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885962199] [2020-07-17 14:55:48,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:48,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 14:55:48,767 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [128823491] [2020-07-17 14:55:48,768 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 14:55:48,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:48,768 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 14:55:48,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-17 14:55:48,769 INFO L87 Difference]: Start difference. First operand 45 states and 48 transitions. Second operand 14 states. [2020-07-17 14:55:49,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:49,220 INFO L93 Difference]: Finished difference Result 64 states and 68 transitions. [2020-07-17 14:55:49,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 14:55:49,220 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-17 14:55:49,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:49,222 INFO L225 Difference]: With dead ends: 64 [2020-07-17 14:55:49,222 INFO L226 Difference]: Without dead ends: 59 [2020-07-17 14:55:49,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2020-07-17 14:55:49,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-07-17 14:55:49,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 47. [2020-07-17 14:55:49,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-07-17 14:55:49,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-07-17 14:55:49,232 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 34 [2020-07-17 14:55:49,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:49,233 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-07-17 14:55:49,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 14:55:49,233 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-07-17 14:55:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 14:55:49,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:49,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:49,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 14:55:49,235 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:49,235 INFO L82 PathProgramCache]: Analyzing trace with hash 1531087869, now seen corresponding path program 1 times [2020-07-17 14:55:49,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:49,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1581458184] [2020-07-17 14:55:49,236 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:49,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:49,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:49,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:55:49,480 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:49,480 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1581458184] [2020-07-17 14:55:49,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:49,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 14:55:49,481 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066611912] [2020-07-17 14:55:49,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 14:55:49,482 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:49,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 14:55:49,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-17 14:55:49,482 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 14 states. [2020-07-17 14:55:49,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:49,992 INFO L93 Difference]: Finished difference Result 76 states and 82 transitions. [2020-07-17 14:55:49,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-17 14:55:49,998 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-17 14:55:49,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:50,000 INFO L225 Difference]: With dead ends: 76 [2020-07-17 14:55:50,000 INFO L226 Difference]: Without dead ends: 71 [2020-07-17 14:55:50,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-07-17 14:55:50,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-07-17 14:55:50,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 52. [2020-07-17 14:55:50,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-07-17 14:55:50,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2020-07-17 14:55:50,011 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 34 [2020-07-17 14:55:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:50,012 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2020-07-17 14:55:50,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 14:55:50,012 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2020-07-17 14:55:50,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 14:55:50,013 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:50,013 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:50,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 14:55:50,014 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:50,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:50,014 INFO L82 PathProgramCache]: Analyzing trace with hash -966733443, now seen corresponding path program 2 times [2020-07-17 14:55:50,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:50,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1120924065] [2020-07-17 14:55:50,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:50,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:50,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:55:50,274 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:50,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1120924065] [2020-07-17 14:55:50,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:50,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 14:55:50,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014954612] [2020-07-17 14:55:50,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 14:55:50,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:50,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 14:55:50,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-07-17 14:55:50,277 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand 14 states. [2020-07-17 14:55:50,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:50,736 INFO L93 Difference]: Finished difference Result 83 states and 89 transitions. [2020-07-17 14:55:50,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-17 14:55:50,739 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 34 [2020-07-17 14:55:50,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:50,741 INFO L225 Difference]: With dead ends: 83 [2020-07-17 14:55:50,741 INFO L226 Difference]: Without dead ends: 78 [2020-07-17 14:55:50,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=594, Unknown=0, NotChecked=0, Total=702 [2020-07-17 14:55:50,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-07-17 14:55:50,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 55. [2020-07-17 14:55:50,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-07-17 14:55:50,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-07-17 14:55:50,761 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 34 [2020-07-17 14:55:50,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:50,762 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-07-17 14:55:50,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 14:55:50,762 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-07-17 14:55:50,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-17 14:55:50,763 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 14:55:50,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 14:55:50,763 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 14:55:50,764 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 14:55:50,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 14:55:50,768 INFO L82 PathProgramCache]: Analyzing trace with hash 1509294206, now seen corresponding path program 3 times [2020-07-17 14:55:50,768 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 14:55:50,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1956910074] [2020-07-17 14:55:50,769 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 14:55:50,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:51,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 14:55:51,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 14:55:51,090 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 14:55:51,091 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1956910074] [2020-07-17 14:55:51,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 14:55:51,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 14:55:51,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303482062] [2020-07-17 14:55:51,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 14:55:51,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 14:55:51,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 14:55:51,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2020-07-17 14:55:51,094 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 15 states. [2020-07-17 14:55:51,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 14:55:51,582 INFO L93 Difference]: Finished difference Result 63 states and 67 transitions. [2020-07-17 14:55:51,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 14:55:51,582 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 41 [2020-07-17 14:55:51,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 14:55:51,583 INFO L225 Difference]: With dead ends: 63 [2020-07-17 14:55:51,583 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 14:55:51,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=118, Invalid=694, Unknown=0, NotChecked=0, Total=812 [2020-07-17 14:55:51,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 14:55:51,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 14:55:51,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 14:55:51,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 14:55:51,585 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 41 [2020-07-17 14:55:51,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 14:55:51,585 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 14:55:51,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 14:55:51,586 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 14:55:51,586 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 14:55:51,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 14:55:51,588 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 14:55:51,976 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:55:51,976 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:55:51,976 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 14:55:51,976 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 14:55:51,977 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 14:55:51,977 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 14:55:51,977 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:55:51,977 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:55:51,977 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-07-17 14:55:51,977 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-07-17 14:55:51,977 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-07-17 14:55:51,978 INFO L271 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: true [2020-07-17 14:55:51,978 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 29) the Hoare annotation is: true [2020-07-17 14:55:51,978 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse0 (+ (* 3 main_~i~0) 2)) (.cse1 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 3 main_~n~0)))) [2020-07-17 14:55:51,978 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:55:51,978 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-07-17 14:55:51,979 INFO L264 CegarLoopResult]: At program point L17-2(lines 17 26) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 (* 3 main_~n~0)) (<= .cse1 .cse0) (<= .cse0 .cse1))) [2020-07-17 14:55:51,979 INFO L264 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: (and (<= main_~i~0 0) (<= 0 main_~i~0)) [2020-07-17 14:55:51,979 INFO L264 CegarLoopResult]: At program point L17-3(lines 17 26) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~n~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:55:51,979 INFO L264 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: (and (<= 0 main_~i~0) (<= main_~a~0 0) (<= (* 3 main_~i~0) main_~a~0)) [2020-07-17 14:55:51,979 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 29) the Hoare annotation is: true [2020-07-17 14:55:51,980 INFO L264 CegarLoopResult]: At program point L15-3(line 15) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= 0 main_~i~0) (<= main_~a~0 0) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 main_~a~0))) [2020-07-17 14:55:51,980 INFO L264 CegarLoopResult]: At program point L15-4(line 15) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= 0 main_~i~0) (<= main_~a~0 0) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 main_~a~0))) [2020-07-17 14:55:51,980 INFO L264 CegarLoopResult]: At program point L15-5(line 15) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= 0 main_~i~0) (<= main_~a~0 0) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 main_~a~0))) [2020-07-17 14:55:51,980 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 29) the Hoare annotation is: true [2020-07-17 14:55:51,980 INFO L264 CegarLoopResult]: At program point L22(line 22) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:55:51,981 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (let ((.cse1 (+ (* 3 main_~i~0) 1)) (.cse0 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= (+ main_~a~0 main_~b~0 2) (* 3 main_~n~0)))) [2020-07-17 14:55:51,981 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:55:51,981 INFO L264 CegarLoopResult]: At program point L18-1(lines 18 24) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:55:51,981 INFO L264 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= 0 main_~i~0) (<= main_~a~0 0) (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 main_~a~0))) [2020-07-17 14:55:51,982 INFO L264 CegarLoopResult]: At program point L18-2(line 18) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:55:51,982 INFO L264 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: (let ((.cse0 (+ main_~a~0 main_~b~0)) (.cse1 (* 3 main_~i~0))) (and (<= .cse0 0) (<= main_~a~0 0) (<= .cse1 .cse0) (<= .cse1 main_~a~0))) [2020-07-17 14:55:51,982 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-07-17 14:55:51,982 INFO L264 CegarLoopResult]: At program point L18-4(line 18) the Hoare annotation is: (let ((.cse1 (+ main_~a~0 main_~b~0)) (.cse0 (* 3 main_~i~0))) (and (<= (+ main_~a~0 main_~b~0 3) (* 3 main_~n~0)) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-07-17 14:55:51,982 INFO L271 CegarLoopResult]: At program point L14-1(line 14) the Hoare annotation is: true [2020-07-17 14:55:51,982 INFO L264 CegarLoopResult]: At program point L18-5(lines 18 24) the Hoare annotation is: (let ((.cse0 (+ (* 3 main_~i~0) 3)) (.cse1 (+ main_~a~0 main_~b~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse1 (* 3 main_~n~0)))) [2020-07-17 14:55:51,983 INFO L271 CegarLoopResult]: At program point L14-2(line 14) the Hoare annotation is: true [2020-07-17 14:55:51,983 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-07-17 14:55:51,983 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:55:51,983 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:55:51,983 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:55:51,983 INFO L264 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: (or (= 0 |__VERIFIER_assert_#in~cond|) (not (= 0 __VERIFIER_assert_~cond))) [2020-07-17 14:55:51,984 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= 0 |__VERIFIER_assert_#in~cond|) [2020-07-17 14:55:52,006 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 02:55:52 BoogieIcfgContainer [2020-07-17 14:55:52,006 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 14:55:52,008 INFO L168 Benchmark]: Toolchain (without parser) took 9054.10 ms. Allocated memory was 144.7 MB in the beginning and 276.8 MB in the end (delta: 132.1 MB). Free memory was 103.5 MB in the beginning and 133.8 MB in the end (delta: -30.3 MB). Peak memory consumption was 101.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:52,009 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-17 14:55:52,011 INFO L168 Benchmark]: CACSL2BoogieTranslator took 268.46 ms. Allocated memory is still 144.7 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:52,012 INFO L168 Benchmark]: Boogie Preprocessor took 45.83 ms. Allocated memory is still 144.7 MB. Free memory was 93.6 MB in the beginning and 92.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:52,013 INFO L168 Benchmark]: RCFGBuilder took 462.38 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 92.0 MB in the beginning and 168.8 MB in the end (delta: -76.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:52,014 INFO L168 Benchmark]: TraceAbstraction took 8269.27 ms. Allocated memory was 203.9 MB in the beginning and 276.8 MB in the end (delta: 72.9 MB). Free memory was 168.8 MB in the beginning and 133.8 MB in the end (delta: 35.1 MB). Peak memory consumption was 107.9 MB. Max. memory is 7.1 GB. [2020-07-17 14:55:52,019 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 144.7 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 268.46 ms. Allocated memory is still 144.7 MB. Free memory was 103.1 MB in the beginning and 93.6 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 45.83 ms. Allocated memory is still 144.7 MB. Free memory was 93.6 MB in the beginning and 92.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 462.38 ms. Allocated memory was 144.7 MB in the beginning and 203.9 MB in the end (delta: 59.2 MB). Free memory was 92.0 MB in the beginning and 168.8 MB in the end (delta: -76.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 8269.27 ms. Allocated memory was 203.9 MB in the beginning and 276.8 MB in the end (delta: 72.9 MB). Free memory was 168.8 MB in the beginning and 133.8 MB in the end (delta: 35.1 MB). Peak memory consumption was 107.9 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: 17]: Loop Invariant Derived loop invariant: (a + b <= 3 * n && 3 * i <= a + b) && a + b <= 3 * i - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 0 == \old(cond) || !(0 == cond) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 170 SDtfs, 330 SDslu, 1077 SDs, 0 SdLazy, 925 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 198 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 154 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 502 ImplicationChecksByTransitivity, 3.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=55occurred in iteration=6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 79 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 38 LocationsWithAnnotation, 80 PreInvPairs, 138 NumberOfFragments, 443 HoareAnnotationTreeSize, 80 FomulaSimplifications, 12758 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 38 FomulaSimplificationsInter, 117 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...