/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample FPandBPonlyIfFpWasNotPerfect -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.assert.codeblocks SMT_FEATURE_HEURISTIC --traceabstraction.assert.codeblocks.term.scoring.heuristic NUM_FUNCTIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.partitioning.strategy FIXED_NUM_PARTITIONS --traceabstraction.assert.codeblocks.term.scoring.heuristic.number.of.partitions 4 -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/heavy-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-d623d84 [2020-07-20 14:17:58,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-20 14:17:58,543 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-20 14:17:58,564 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-20 14:17:58,565 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-20 14:17:58,567 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-20 14:17:58,569 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-20 14:17:58,580 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-20 14:17:58,584 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-20 14:17:58,585 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-20 14:17:58,587 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-20 14:17:58,588 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-20 14:17:58,589 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-20 14:17:58,593 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-20 14:17:58,595 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-20 14:17:58,597 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-20 14:17:58,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-20 14:17:58,601 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-20 14:17:58,602 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-20 14:17:58,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-20 14:17:58,613 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-20 14:17:58,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-20 14:17:58,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-20 14:17:58,618 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-20 14:17:58,621 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-20 14:17:58,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-20 14:17:58,634 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-20 14:17:58,636 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-20 14:17:58,637 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-20 14:17:58,676 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-20 14:17:58,677 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-20 14:17:58,681 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-20 14:17:58,682 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-20 14:17:58,682 INFO L138 SettingsManager]: * Use SBE=true [2020-07-20 14:17:58,682 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-20 14:17:58,682 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-20 14:17:58,682 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-20 14:17:58,683 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-20 14:17:58,683 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-20 14:17:58,683 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-20 14:17:58,683 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-20 14:17:58,684 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-20 14:17:58,685 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-20 14:17:58,685 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-20 14:17:58,685 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-20 14:17:58,685 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-20 14:17:58,685 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-20 14:17:58,686 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-20 14:17:58,686 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-20 14:17:58,686 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-20 14:17:58,686 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:17:58,686 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-20 14:17:58,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-20 14:17:58,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-20 14:17:58,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-20 14:17:58,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:17:58,687 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-20 14:17:58,688 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-20 14:17:58,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> FPandBPonlyIfFpWasNotPerfect Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks -> SMT_FEATURE_HEURISTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic -> NUM_FUNCTIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic Partitioning Strategy -> FIXED_NUM_PARTITIONS Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Assert CodeBlocks Term Scoring Heuristic number of partitions -> 4 [2020-07-20 14:17:58,969 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-20 14:17:58,986 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-20 14:17:58,989 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-20 14:17:58,993 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-20 14:17:58,994 INFO L275 PluginConnector]: CDTParser initialized [2020-07-20 14:17:58,996 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/heavy-2.c [2020-07-20 14:17:59,083 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b8a4fee/77f33079a6fc41b3b8422aed73e83387/FLAG1300568a7 [2020-07-20 14:17:59,593 INFO L306 CDTParser]: Found 1 translation units. [2020-07-20 14:17:59,593 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/heavy-2.c [2020-07-20 14:17:59,602 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b8a4fee/77f33079a6fc41b3b8422aed73e83387/FLAG1300568a7 [2020-07-20 14:17:59,902 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/02b8a4fee/77f33079a6fc41b3b8422aed73e83387 [2020-07-20 14:17:59,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-20 14:17:59,915 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-20 14:17:59,916 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-20 14:17:59,916 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-20 14:17:59,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-20 14:17:59,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:17:59" (1/1) ... [2020-07-20 14:17:59,923 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@23f87cfb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:17:59, skipping insertion in model container [2020-07-20 14:17:59,924 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.07 02:17:59" (1/1) ... [2020-07-20 14:17:59,931 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-20 14:17:59,950 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-20 14:18:00,123 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:18:00,166 INFO L203 MainTranslator]: Completed pre-run [2020-07-20 14:18:00,186 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-20 14:18:00,327 INFO L208 MainTranslator]: Completed translation [2020-07-20 14:18:00,328 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00 WrapperNode [2020-07-20 14:18:00,328 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-20 14:18:00,329 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-20 14:18:00,329 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-20 14:18:00,329 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-20 14:18:00,339 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... [2020-07-20 14:18:00,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... [2020-07-20 14:18:00,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... [2020-07-20 14:18:00,349 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... [2020-07-20 14:18:00,357 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... [2020-07-20 14:18:00,362 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... [2020-07-20 14:18:00,364 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... [2020-07-20 14:18:00,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-20 14:18:00,367 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-20 14:18:00,367 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-20 14:18:00,367 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-20 14:18:00,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-20 14:18:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-20 14:18:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-20 14:18:00,442 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-20 14:18:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-20 14:18:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-20 14:18:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-20 14:18:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-20 14:18:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-20 14:18:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-20 14:18:00,443 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2020-07-20 14:18:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-20 14:18:00,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-20 14:18:00,708 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-20 14:18:00,708 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-20 14:18:00,713 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:18:00 BoogieIcfgContainer [2020-07-20 14:18:00,713 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-20 14:18:00,715 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-20 14:18:00,715 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-20 14:18:00,722 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-20 14:18:00,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.07 02:17:59" (1/3) ... [2020-07-20 14:18:00,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e7a211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:18:00, skipping insertion in model container [2020-07-20 14:18:00,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.07 02:18:00" (2/3) ... [2020-07-20 14:18:00,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52e7a211 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.07 02:18:00, skipping insertion in model container [2020-07-20 14:18:00,727 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.07 02:18:00" (3/3) ... [2020-07-20 14:18:00,729 INFO L109 eAbstractionObserver]: Analyzing ICFG heavy-2.c [2020-07-20 14:18:00,745 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBPonlyIfFpWasNotPerfect Determinization: PREDICATE_ABSTRACTION [2020-07-20 14:18:00,756 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-20 14:18:00,777 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-20 14:18:00,810 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-20 14:18:00,810 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-20 14:18:00,810 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBPonlyIfFpWasNotPerfect [2020-07-20 14:18:00,811 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-20 14:18:00,811 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-20 14:18:00,811 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-20 14:18:00,811 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-20 14:18:00,812 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-20 14:18:00,831 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-07-20 14:18:00,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-07-20 14:18:00,839 INFO L414 BasicCegarLoop]: Found error trace [2020-07-20 14:18:00,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-20 14:18:00,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-20 14:18:00,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-20 14:18:00,848 INFO L82 PathProgramCache]: Analyzing trace with hash 242978043, now seen corresponding path program 1 times [2020-07-20 14:18:00,859 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-20 14:18:00,859 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [636977511] [2020-07-20 14:18:00,860 INFO L95 rtionOrderModulation]: Keeping assertion order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:00,969 INFO L228 tOrderPrioritization]: Assert order SMT_FEATURE_HEURISTIC (partitioning type FIXED_NUM_PARTITIONS, 4 partitions) issued 2 check-sat command(s) [2020-07-20 14:18:00,969 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-07-20 14:18:00,973 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 3 conjunts are in the unsatisfiable core [2020-07-20 14:18:00,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-07-20 14:18:01,019 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-20 14:18:01,019 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-07-20 14:18:01,020 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [636977511] [2020-07-20 14:18:01,021 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-20 14:18:01,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-20 14:18:01,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231639747] [2020-07-20 14:18:01,027 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-20 14:18:01,028 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-20 14:18:01,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-20 14:18:01,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:18:01,042 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-07-20 14:18:01,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-20 14:18:01,073 INFO L93 Difference]: Finished difference Result 30 states and 42 transitions. [2020-07-20 14:18:01,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-20 14:18:01,075 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-07-20 14:18:01,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-20 14:18:01,083 INFO L225 Difference]: With dead ends: 30 [2020-07-20 14:18:01,083 INFO L226 Difference]: Without dead ends: 0 [2020-07-20 14:18:01,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-20 14:18:01,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-20 14:18:01,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-20 14:18:01,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-20 14:18:01,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-20 14:18:01,114 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-07-20 14:18:01,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-20 14:18:01,115 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-20 14:18:01,116 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-20 14:18:01,116 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-20 14:18:01,116 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-20 14:18:01,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-20 14:18:01,335 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-20 14:18:01,422 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:18:01,423 INFO L271 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:18:01,423 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:18:01,423 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-07-20 14:18:01,423 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-20 14:18:01,423 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-20 14:18:01,424 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-07-20 14:18:01,424 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 5 21) no Hoare annotation was computed. [2020-07-20 14:18:01,424 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 5 21) no Hoare annotation was computed. [2020-07-20 14:18:01,424 INFO L268 CegarLoopResult]: For program point L11-2(lines 11 13) no Hoare annotation was computed. [2020-07-20 14:18:01,424 INFO L264 CegarLoopResult]: At program point L11-3(lines 11 13) the Hoare annotation is: (= 1 main_~a~0) [2020-07-20 14:18:01,425 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2020-07-20 14:18:01,425 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 5 21) the Hoare annotation is: true [2020-07-20 14:18:01,425 INFO L264 CegarLoopResult]: At program point L16(lines 6 21) the Hoare annotation is: false [2020-07-20 14:18:01,425 INFO L268 CegarLoopResult]: For program point L12-2(lines 12 13) no Hoare annotation was computed. [2020-07-20 14:18:01,425 INFO L264 CegarLoopResult]: At program point L12-3(lines 12 13) the Hoare annotation is: (= 1 main_~a~0) [2020-07-20 14:18:01,426 INFO L268 CegarLoopResult]: For program point L10-2(lines 10 13) no Hoare annotation was computed. [2020-07-20 14:18:01,426 INFO L264 CegarLoopResult]: At program point L10-3(lines 10 13) the Hoare annotation is: (= 1 main_~a~0) [2020-07-20 14:18:01,426 INFO L268 CegarLoopResult]: For program point L10-4(lines 6 21) no Hoare annotation was computed. [2020-07-20 14:18:01,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.07 02:18:01 BoogieIcfgContainer [2020-07-20 14:18:01,444 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-20 14:18:01,447 INFO L168 Benchmark]: Toolchain (without parser) took 1533.51 ms. Allocated memory was 138.9 MB in the beginning and 217.6 MB in the end (delta: 78.6 MB). Free memory was 103.3 MB in the beginning and 154.4 MB in the end (delta: -51.1 MB). Peak memory consumption was 27.5 MB. Max. memory is 7.1 GB. [2020-07-20 14:18:01,449 INFO L168 Benchmark]: CDTParser took 0.58 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-20 14:18:01,450 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.75 ms. Allocated memory was 138.9 MB in the beginning and 217.6 MB in the end (delta: 78.6 MB). Free memory was 102.9 MB in the beginning and 203.9 MB in the end (delta: -101.0 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. [2020-07-20 14:18:01,451 INFO L168 Benchmark]: Boogie Preprocessor took 37.51 ms. Allocated memory is still 217.6 MB. Free memory was 203.9 MB in the beginning and 201.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. [2020-07-20 14:18:01,452 INFO L168 Benchmark]: RCFGBuilder took 346.90 ms. Allocated memory is still 217.6 MB. Free memory was 201.9 MB in the beginning and 185.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-07-20 14:18:01,453 INFO L168 Benchmark]: TraceAbstraction took 729.94 ms. Allocated memory is still 217.6 MB. Free memory was 185.1 MB in the beginning and 154.4 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. [2020-07-20 14:18:01,457 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.58 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 412.75 ms. Allocated memory was 138.9 MB in the beginning and 217.6 MB in the end (delta: 78.6 MB). Free memory was 102.9 MB in the beginning and 203.9 MB in the end (delta: -101.0 MB). Peak memory consumption was 47.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 37.51 ms. Allocated memory is still 217.6 MB. Free memory was 203.9 MB in the beginning and 201.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 346.90 ms. Allocated memory is still 217.6 MB. Free memory was 201.9 MB in the beginning and 185.1 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 729.94 ms. Allocated memory is still 217.6 MB. Free memory was 185.1 MB in the beginning and 154.4 MB in the end (delta: 30.7 MB). Peak memory consumption was 30.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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: 10]: Loop Invariant Derived loop invariant: 1 == a - InvariantResult [Line: 11]: Loop Invariant Derived loop invariant: 1 == a - InvariantResult [Line: 12]: Loop Invariant Derived loop invariant: 1 == a - InvariantResult [Line: 6]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.5s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 18 SDtfs, 11 SDslu, 7 SDs, 0 SdLazy, 1 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 8 PreInvPairs, 11 NumberOfFragments, 14 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 9 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 96 SizeOfPredicates, 1 NumberOfNonLiveVariables, 59 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...