/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 22:08:49,646 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 22:08:49,649 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 22:08:49,667 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 22:08:49,667 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 22:08:49,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 22:08:49,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 22:08:49,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 22:08:49,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 22:08:49,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 22:08:49,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 22:08:49,688 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... 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[2019-11-23 22:08:49,732 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 22:08:49,746 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 22:08:49,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 22:08:49,747 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 22:08:49,747 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 22:08:49,747 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 22:08:49,748 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 22:08:49,748 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 22:08:49,748 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 22:08:49,748 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 22:08:49,749 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 22:08:49,749 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 22:08:49,749 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 22:08:49,749 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 22:08:49,749 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 22:08:49,750 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 22:08:49,750 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 22:08:49,750 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 22:08:49,750 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 22:08:49,750 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 22:08:49,751 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 22:08:49,751 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 22:08:49,751 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 22:08:49,751 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 22:08:49,752 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 22:08:49,752 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 22:08:49,752 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 22:08:49,752 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 22:08:49,752 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 22:08:49,753 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 22:08:49,753 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 22:08:50,042 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 22:08:50,058 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 22:08:50,061 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 22:08:50,063 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 22:08:50,063 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 22:08:50,064 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-11-23 22:08:50,136 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0230529bb/feb166bdeb6342c48e36938cf1e02a2e/FLAGe9bfc116c [2019-11-23 22:08:50,573 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 22:08:50,574 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/underapprox_2-2.c [2019-11-23 22:08:50,580 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0230529bb/feb166bdeb6342c48e36938cf1e02a2e/FLAGe9bfc116c [2019-11-23 22:08:51,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0230529bb/feb166bdeb6342c48e36938cf1e02a2e [2019-11-23 22:08:51,012 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 22:08:51,013 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 22:08:51,014 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 22:08:51,015 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 22:08:51,018 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 22:08:51,019 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71e616d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51, skipping insertion in model container [2019-11-23 22:08:51,023 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,030 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 22:08:51,047 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 22:08:51,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:08:51,225 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 22:08:51,241 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 22:08:51,252 INFO L208 MainTranslator]: Completed translation [2019-11-23 22:08:51,252 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51 WrapperNode [2019-11-23 22:08:51,253 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 22:08:51,253 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 22:08:51,254 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 22:08:51,254 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 22:08:51,262 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,266 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,359 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 22:08:51,359 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 22:08:51,359 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 22:08:51,359 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 22:08:51,368 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,369 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,369 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,369 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,375 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,376 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (1/1) ... [2019-11-23 22:08:51,377 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 22:08:51,378 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 22:08:51,378 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 22:08:51,378 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 22:08:51,379 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (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 [2019-11-23 22:08:51,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 22:08:51,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 22:08:51,594 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 22:08:51,595 INFO L284 CfgBuilder]: Removed 7 assume(true) statements. [2019-11-23 22:08:51,596 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:08:51 BoogieIcfgContainer [2019-11-23 22:08:51,596 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 22:08:51,597 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 22:08:51,597 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 22:08:51,600 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 22:08:51,600 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 10:08:51" (1/3) ... [2019-11-23 22:08:51,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741c23ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:08:51, skipping insertion in model container [2019-11-23 22:08:51,601 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 10:08:51" (2/3) ... [2019-11-23 22:08:51,601 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@741c23ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 10:08:51, skipping insertion in model container [2019-11-23 22:08:51,602 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 10:08:51" (3/3) ... [2019-11-23 22:08:51,603 INFO L109 eAbstractionObserver]: Analyzing ICFG underapprox_2-2.c [2019-11-23 22:08:51,613 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 22:08:51,620 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 22:08:51,631 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 22:08:51,655 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 22:08:51,655 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 22:08:51,655 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 22:08:51,655 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 22:08:51,655 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 22:08:51,655 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 22:08:51,655 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 22:08:51,656 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 22:08:51,666 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2019-11-23 22:08:51,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2019-11-23 22:08:51,671 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:08:51,672 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2019-11-23 22:08:51,672 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:08:51,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:08:51,676 INFO L82 PathProgramCache]: Analyzing trace with hash 29805000, now seen corresponding path program 1 times [2019-11-23 22:08:51,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:08:51,684 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [803236000] [2019-11-23 22:08:51,684 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:08:51,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:08:51,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:08:51,868 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [803236000] [2019-11-23 22:08:51,869 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 22:08:51,869 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-23 22:08:51,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684798930] [2019-11-23 22:08:51,875 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 22:08:51,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:08:51,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 22:08:51,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:08:51,888 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2019-11-23 22:08:51,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:08:51,921 INFO L93 Difference]: Finished difference Result 17 states and 21 transitions. [2019-11-23 22:08:51,921 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 22:08:51,923 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 5 [2019-11-23 22:08:51,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:08:51,933 INFO L225 Difference]: With dead ends: 17 [2019-11-23 22:08:51,934 INFO L226 Difference]: Without dead ends: 7 [2019-11-23 22:08:51,939 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 22:08:51,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7 states. [2019-11-23 22:08:51,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7 to 7. [2019-11-23 22:08:51,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2019-11-23 22:08:51,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 7 transitions. [2019-11-23 22:08:51,972 INFO L78 Accepts]: Start accepts. Automaton has 7 states and 7 transitions. Word has length 5 [2019-11-23 22:08:51,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:08:51,973 INFO L462 AbstractCegarLoop]: Abstraction has 7 states and 7 transitions. [2019-11-23 22:08:51,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 22:08:51,973 INFO L276 IsEmpty]: Start isEmpty. Operand 7 states and 7 transitions. [2019-11-23 22:08:51,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2019-11-23 22:08:51,973 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:08:51,974 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2019-11-23 22:08:51,974 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:08:51,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:08:51,975 INFO L82 PathProgramCache]: Analyzing trace with hash 925620370, now seen corresponding path program 1 times [2019-11-23 22:08:51,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:08:51,975 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [972517112] [2019-11-23 22:08:51,975 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:08:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:08:52,083 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:08:52,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [972517112] [2019-11-23 22:08:52,084 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [756622716] [2019-11-23 22:08:52,085 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:08:52,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:08:52,159 WARN L253 TraceCheckSpWp]: Trace formula consists of 19 conjuncts, 11 conjunts are in the unsatisfiable core [2019-11-23 22:08:52,166 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:08:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:08:52,207 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:08:52,208 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 4 [2019-11-23 22:08:52,209 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636940247] [2019-11-23 22:08:52,212 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:08:52,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:08:52,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:08:52,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:08:52,214 INFO L87 Difference]: Start difference. First operand 7 states and 7 transitions. Second operand 5 states. [2019-11-23 22:08:52,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:08:52,241 INFO L93 Difference]: Finished difference Result 12 states and 12 transitions. [2019-11-23 22:08:52,242 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 22:08:52,242 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 6 [2019-11-23 22:08:52,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:08:52,244 INFO L225 Difference]: With dead ends: 12 [2019-11-23 22:08:52,244 INFO L226 Difference]: Without dead ends: 8 [2019-11-23 22:08:52,245 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-23 22:08:52,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8 states. [2019-11-23 22:08:52,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8 to 8. [2019-11-23 22:08:52,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2019-11-23 22:08:52,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 8 transitions. [2019-11-23 22:08:52,251 INFO L78 Accepts]: Start accepts. Automaton has 8 states and 8 transitions. Word has length 6 [2019-11-23 22:08:52,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:08:52,252 INFO L462 AbstractCegarLoop]: Abstraction has 8 states and 8 transitions. [2019-11-23 22:08:52,252 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:08:52,252 INFO L276 IsEmpty]: Start isEmpty. Operand 8 states and 8 transitions. [2019-11-23 22:08:52,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-23 22:08:52,253 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:08:52,253 INFO L410 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2019-11-23 22:08:52,456 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:08:52,461 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:08:52,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:08:52,462 INFO L82 PathProgramCache]: Analyzing trace with hash -1368874232, now seen corresponding path program 2 times [2019-11-23 22:08:52,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:08:52,463 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716987812] [2019-11-23 22:08:52,463 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:08:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:08:52,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:08:52,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716987812] [2019-11-23 22:08:52,584 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1545205234] [2019-11-23 22:08:52,584 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:08:52,622 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 22:08:52,622 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:08:52,623 WARN L253 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 13 conjunts are in the unsatisfiable core [2019-11-23 22:08:52,624 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:08:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:08:52,648 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 22:08:52,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 22:08:52,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070329987] [2019-11-23 22:08:52,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 22:08:52,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:08:52,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 22:08:52,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:08:52,652 INFO L87 Difference]: Start difference. First operand 8 states and 8 transitions. Second operand 6 states. [2019-11-23 22:08:52,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:08:52,694 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2019-11-23 22:08:52,695 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:08:52,695 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 7 [2019-11-23 22:08:52,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:08:52,696 INFO L225 Difference]: With dead ends: 13 [2019-11-23 22:08:52,696 INFO L226 Difference]: Without dead ends: 9 [2019-11-23 22:08:52,696 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2019-11-23 22:08:52,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states. [2019-11-23 22:08:52,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 9. [2019-11-23 22:08:52,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2019-11-23 22:08:52,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 9 transitions. [2019-11-23 22:08:52,701 INFO L78 Accepts]: Start accepts. Automaton has 9 states and 9 transitions. Word has length 7 [2019-11-23 22:08:52,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:08:52,701 INFO L462 AbstractCegarLoop]: Abstraction has 9 states and 9 transitions. [2019-11-23 22:08:52,701 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 22:08:52,701 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states and 9 transitions. [2019-11-23 22:08:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-23 22:08:52,702 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 22:08:52,703 INFO L410 BasicCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1] [2019-11-23 22:08:52,904 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:08:52,904 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 22:08:52,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 22:08:52,904 INFO L82 PathProgramCache]: Analyzing trace with hash 516237138, now seen corresponding path program 3 times [2019-11-23 22:08:52,905 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 22:08:52,905 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155596621] [2019-11-23 22:08:52,905 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 22:08:52,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 22:08:53,016 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 22:08:53,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155596621] [2019-11-23 22:08:53,017 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1789342992] [2019-11-23 22:08:53,017 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:08:53,041 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2019-11-23 22:08:53,041 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 22:08:53,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 10 conjunts are in the unsatisfiable core [2019-11-23 22:08:53,044 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 22:08:53,108 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 22:08:53,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-11-23 22:08:53,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-11-23 22:08:53,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2019-11-23 22:08:53,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [211571153] [2019-11-23 22:08:53,135 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 22:08:53,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 22:08:53,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 22:08:53,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-23 22:08:53,136 INFO L87 Difference]: Start difference. First operand 9 states and 9 transitions. Second operand 5 states. [2019-11-23 22:08:53,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 22:08:53,179 INFO L93 Difference]: Finished difference Result 9 states and 9 transitions. [2019-11-23 22:08:53,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 22:08:53,179 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 8 [2019-11-23 22:08:53,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 22:08:53,180 INFO L225 Difference]: With dead ends: 9 [2019-11-23 22:08:53,180 INFO L226 Difference]: Without dead ends: 0 [2019-11-23 22:08:53,181 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2019-11-23 22:08:53,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-11-23 22:08:53,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-11-23 22:08:53,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-11-23 22:08:53,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-11-23 22:08:53,182 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 8 [2019-11-23 22:08:53,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 22:08:53,182 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-11-23 22:08:53,183 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 22:08:53,183 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-11-23 22:08:53,183 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-11-23 22:08:53,386 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 22:08:53,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-11-23 22:08:53,423 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-11-23 22:08:53,423 INFO L444 ceAbstractionStarter]: For program point L5(line 5) no Hoare annotation was computed. [2019-11-23 22:08:53,423 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2019-11-23 22:08:53,424 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-11-23 22:08:53,424 INFO L444 ceAbstractionStarter]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2019-11-23 22:08:53,424 INFO L440 ceAbstractionStarter]: At program point L14-2(lines 14 17) the Hoare annotation is: (or (and (<= ULTIMATE.start_main_~x~0 0) (<= 0 ULTIMATE.start_main_~x~0)) (< (mod (+ ULTIMATE.start_main_~x~0 4294967295) 4294967296) 6)) [2019-11-23 22:08:53,424 INFO L444 ceAbstractionStarter]: For program point L14-3(lines 14 17) no Hoare annotation was computed. [2019-11-23 22:08:53,425 INFO L444 ceAbstractionStarter]: For program point L4(lines 4 6) no Hoare annotation was computed. [2019-11-23 22:08:53,425 INFO L447 ceAbstractionStarter]: At program point L4-2(lines 1 20) the Hoare annotation is: true [2019-11-23 22:08:53,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.11 10:08:53 BoogieIcfgContainer [2019-11-23 22:08:53,438 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-23 22:08:53,441 INFO L168 Benchmark]: Toolchain (without parser) took 2426.52 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 92.5 MB in the end (delta: 10.9 MB). Peak memory consumption was 67.5 MB. Max. memory is 7.1 GB. [2019-11-23 22:08:53,442 INFO L168 Benchmark]: CDTParser took 0.45 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2019-11-23 22:08:53,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.66 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 94.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:08:53,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 105.44 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 94.0 MB in the beginning and 181.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2019-11-23 22:08:53,445 INFO L168 Benchmark]: Boogie Preprocessor took 18.08 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 180.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. [2019-11-23 22:08:53,446 INFO L168 Benchmark]: RCFGBuilder took 218.62 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 170.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2019-11-23 22:08:53,447 INFO L168 Benchmark]: TraceAbstraction took 1840.96 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 92.5 MB in the end (delta: 77.2 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. [2019-11-23 22:08:53,451 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.45 ms. Allocated memory is still 145.8 MB. Free memory was 122.1 MB in the beginning and 121.9 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.66 ms. Allocated memory is still 145.8 MB. Free memory was 103.2 MB in the beginning and 94.0 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 105.44 ms. Allocated memory was 145.8 MB in the beginning and 202.4 MB in the end (delta: 56.6 MB). Free memory was 94.0 MB in the beginning and 181.6 MB in the end (delta: -87.6 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 18.08 ms. Allocated memory is still 202.4 MB. Free memory was 181.6 MB in the beginning and 180.3 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 218.62 ms. Allocated memory is still 202.4 MB. Free memory was 180.3 MB in the beginning and 170.4 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1840.96 ms. Allocated memory is still 202.4 MB. Free memory was 169.8 MB in the beginning and 92.5 MB in the end (delta: 77.2 MB). Peak memory consumption was 77.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (x <= 0 && 0 <= x) || (x + 4294967295) % 4294967296 < 6 - InvariantResult [Line: 1]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 locations, 1 error locations. Result: SAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 3, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 3 SDslu, 17 SDs, 0 SdLazy, 40 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 13 SyntacticMatches, 8 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9occurred in iteration=0, 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, 4 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 2 LocationsWithAnnotation, 2 PreInvPairs, 6 NumberOfFragments, 16 HoareAnnotationTreeSize, 2 FomulaSimplifications, 28 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 2 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 47 NumberOfCodeBlocks, 46 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 40 ConstructedInterpolants, 0 QuantifiedInterpolants, 976 SizeOfPredicates, 3 NumberOfNonLiveVariables, 67 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 7 InterpolantComputations, 2 PerfectInterpolantSequences, 6/20 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...