/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration false -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 15:08:59,387 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 15:08:59,391 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 15:08:59,439 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 15:08:59,440 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 15:08:59,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 15:08:59,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 15:08:59,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 15:08:59,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 15:08:59,462 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 15:08:59,463 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 15:08:59,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 15:08:59,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 15:08:59,469 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 15:08:59,472 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 15:08:59,474 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 15:08:59,475 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 15:08:59,476 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 15:08:59,478 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 15:08:59,486 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 15:08:59,488 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 15:08:59,490 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 15:08:59,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 15:08:59,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 15:08:59,495 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-09-24 15:08:59,509 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 15:08:59,510 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 15:08:59,511 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 15:08:59,512 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 15:08:59,538 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 15:08:59,538 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 15:08:59,539 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 15:08:59,540 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 15:08:59,540 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 15:08:59,540 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 15:08:59,540 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 15:08:59,540 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 15:08:59,541 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 15:08:59,541 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 15:08:59,541 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 15:08:59,541 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 15:08:59,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 15:08:59,542 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 15:08:59,542 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 15:08:59,542 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 15:08:59,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 15:08:59,543 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 15:08:59,543 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 15:08:59,543 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 15:08:59,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 15:08:59,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:08:59,544 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 15:08:59,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 15:08:59,545 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 15:08:59,545 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 15:08:59,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 15:08:59,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 15:08:59,546 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 15:08:59,546 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> false [2020-09-24 15:09:00,055 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 15:09:00,073 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 15:09:00,077 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 15:09:00,079 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 15:09:00,080 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 15:09:00,081 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-09-24 15:09:00,173 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5772df180/6587ed52aa7a4e97ab2a160807392734/FLAG865ab51cb [2020-09-24 15:09:00,702 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 15:09:00,703 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-industry-pattern/mod3.c.v+cfa-reducer.c [2020-09-24 15:09:00,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5772df180/6587ed52aa7a4e97ab2a160807392734/FLAG865ab51cb [2020-09-24 15:09:01,049 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5772df180/6587ed52aa7a4e97ab2a160807392734 [2020-09-24 15:09:01,065 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 15:09:01,071 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 15:09:01,072 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 15:09:01,072 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 15:09:01,077 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 15:09:01,078 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,082 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67fe5b14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01, skipping insertion in model container [2020-09-24 15:09:01,082 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,091 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 15:09:01,118 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 15:09:01,327 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:09:01,333 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 15:09:01,356 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 15:09:01,372 INFO L208 MainTranslator]: Completed translation [2020-09-24 15:09:01,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01 WrapperNode [2020-09-24 15:09:01,373 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 15:09:01,374 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 15:09:01,374 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 15:09:01,374 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 15:09:01,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,475 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,475 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,488 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... [2020-09-24 15:09:01,491 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 15:09:01,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 15:09:01,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 15:09:01,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 15:09:01,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 15:09:01,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 15:09:01,576 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 15:09:01,576 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 15:09:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 15:09:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 15:09:01,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 15:09:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 15:09:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 15:09:01,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 15:09:01,882 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 15:09:01,883 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 15:09:01,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:09:01 BoogieIcfgContainer [2020-09-24 15:09:01,890 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 15:09:01,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 15:09:01,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 15:09:01,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 15:09:01,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 03:09:01" (1/3) ... [2020-09-24 15:09:01,919 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583c14c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:09:01, skipping insertion in model container [2020-09-24 15:09:01,919 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 03:09:01" (2/3) ... [2020-09-24 15:09:01,920 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@583c14c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 03:09:01, skipping insertion in model container [2020-09-24 15:09:01,920 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 03:09:01" (3/3) ... [2020-09-24 15:09:01,924 INFO L109 eAbstractionObserver]: Analyzing ICFG mod3.c.v+cfa-reducer.c [2020-09-24 15:09:01,939 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 15:09:01,951 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 15:09:01,971 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 15:09:02,005 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 15:09:02,005 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 15:09:02,006 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 15:09:02,006 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 15:09:02,006 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 15:09:02,006 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 15:09:02,006 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 15:09:02,007 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 15:09:02,030 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-09-24 15:09:02,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-24 15:09:02,038 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:09:02,039 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] [2020-09-24 15:09:02,040 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:09:02,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:09:02,046 INFO L82 PathProgramCache]: Analyzing trace with hash -869872181, now seen corresponding path program 1 times [2020-09-24 15:09:02,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:09:02,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195480374] [2020-09-24 15:09:02,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:09:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:09:02,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:09:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:09:02,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:09:02,401 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195480374] [2020-09-24 15:09:02,404 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:09:02,404 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 15:09:02,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159873247] [2020-09-24 15:09:02,411 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 15:09:02,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:09:02,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 15:09:02,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 15:09:02,432 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 4 states. [2020-09-24 15:09:02,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:09:02,643 INFO L93 Difference]: Finished difference Result 83 states and 93 transitions. [2020-09-24 15:09:02,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-24 15:09:02,646 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-09-24 15:09:02,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:09:02,661 INFO L225 Difference]: With dead ends: 83 [2020-09-24 15:09:02,662 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 15:09:02,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 15:09:02,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 15:09:02,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 41. [2020-09-24 15:09:02,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-24 15:09:02,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 44 transitions. [2020-09-24 15:09:02,722 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 44 transitions. Word has length 20 [2020-09-24 15:09:02,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:09:02,722 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 44 transitions. [2020-09-24 15:09:02,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 15:09:02,723 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 44 transitions. [2020-09-24 15:09:02,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-24 15:09:02,724 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:09:02,725 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 15:09:02,725 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 15:09:02,725 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:09:02,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:09:02,726 INFO L82 PathProgramCache]: Analyzing trace with hash -1638922607, now seen corresponding path program 1 times [2020-09-24 15:09:02,726 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:09:02,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1466388279] [2020-09-24 15:09:02,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:09:02,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:09:03,328 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 140 DAG size of output: 28 [2020-09-24 15:09:03,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:09:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:09:03,448 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:09:03,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1466388279] [2020-09-24 15:09:03,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:09:03,449 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:09:03,449 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417398234] [2020-09-24 15:09:03,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:09:03,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:09:03,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:09:03,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:09:03,454 INFO L87 Difference]: Start difference. First operand 41 states and 44 transitions. Second operand 7 states. [2020-09-24 15:09:08,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:09:08,122 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2020-09-24 15:09:08,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:09:08,123 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-09-24 15:09:08,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:09:08,125 INFO L225 Difference]: With dead ends: 94 [2020-09-24 15:09:08,125 INFO L226 Difference]: Without dead ends: 55 [2020-09-24 15:09:08,126 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:09:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-24 15:09:08,133 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2020-09-24 15:09:08,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 15:09:08,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 51 transitions. [2020-09-24 15:09:08,135 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 51 transitions. Word has length 28 [2020-09-24 15:09:08,135 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:09:08,136 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 51 transitions. [2020-09-24 15:09:08,136 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:09:08,136 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 51 transitions. [2020-09-24 15:09:08,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-09-24 15:09:08,137 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 15:09:08,137 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-24 15:09:08,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 15:09:08,138 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 15:09:08,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 15:09:08,138 INFO L82 PathProgramCache]: Analyzing trace with hash -850084426, now seen corresponding path program 1 times [2020-09-24 15:09:08,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 15:09:08,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [968511207] [2020-09-24 15:09:08,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 15:09:08,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:09:08,400 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 18 [2020-09-24 15:09:08,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 15:09:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 15:09:08,486 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 15:09:08,486 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [968511207] [2020-09-24 15:09:08,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 15:09:08,487 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 15:09:08,487 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311486084] [2020-09-24 15:09:08,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 15:09:08,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 15:09:08,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 15:09:08,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 15:09:08,489 INFO L87 Difference]: Start difference. First operand 48 states and 51 transitions. Second operand 7 states. [2020-09-24 15:09:11,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 15:09:11,128 INFO L93 Difference]: Finished difference Result 95 states and 105 transitions. [2020-09-24 15:09:11,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 15:09:11,129 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-09-24 15:09:11,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 15:09:11,130 INFO L225 Difference]: With dead ends: 95 [2020-09-24 15:09:11,130 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 15:09:11,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2020-09-24 15:09:11,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 15:09:11,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 15:09:11,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 15:09:11,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 15:09:11,133 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 29 [2020-09-24 15:09:11,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 15:09:11,133 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 15:09:11,133 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 15:09:11,134 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 15:09:11,134 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 15:09:11,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 15:09:11,137 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 15:09:11,217 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:09:11,218 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_107~0 |old(~__return_107~0)|) (= ~__return_main~0 |old(~__return_main~0)|)) [2020-09-24 15:09:11,218 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-24 15:09:11,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:09:11,218 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-24 15:09:11,218 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-24 15:09:11,219 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-24 15:09:11,219 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-24 15:09:11,219 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-24 15:09:11,219 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 7 76) no Hoare annotation was computed. [2020-09-24 15:09:11,219 INFO L268 CegarLoopResult]: For program point L56(line 56) no Hoare annotation was computed. [2020-09-24 15:09:11,219 INFO L268 CegarLoopResult]: For program point L52(lines 52 74) no Hoare annotation was computed. [2020-09-24 15:09:11,220 INFO L268 CegarLoopResult]: For program point L19(line 19) no Hoare annotation was computed. [2020-09-24 15:09:11,220 INFO L268 CegarLoopResult]: For program point L44(line 44) no Hoare annotation was computed. [2020-09-24 15:09:11,220 INFO L268 CegarLoopResult]: For program point L73(line 73) no Hoare annotation was computed. [2020-09-24 15:09:11,220 INFO L268 CegarLoopResult]: For program point L61(line 61) no Hoare annotation was computed. [2020-09-24 15:09:11,220 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-24 15:09:11,220 INFO L268 CegarLoopResult]: For program point L57(line 57) no Hoare annotation was computed. [2020-09-24 15:09:11,220 INFO L268 CegarLoopResult]: For program point L16(lines 16 48) no Hoare annotation was computed. [2020-09-24 15:09:11,221 INFO L264 CegarLoopResult]: At program point L45(lines 8 76) the Hoare annotation is: (let ((.cse0 (= |old(~__return_107~0)| ~__return_107~0))) (or (and .cse0 (= (let ((.cse1 (div main_~main__x~0 4294967296))) (+ (* .cse1 4294967296) (* (div (+ (* .cse1 (- 4294967296)) main_~main__x~0) 3) 3))) main_~main__x~0)) (and .cse0 (<= (div main_~main__y~0 4294967296) 0) (<= 1 main_~main__y~0)))) [2020-09-24 15:09:11,221 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-24 15:09:11,221 INFO L268 CegarLoopResult]: For program point L66(line 66) no Hoare annotation was computed. [2020-09-24 15:09:11,221 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-24 15:09:11,221 INFO L268 CegarLoopResult]: For program point L62(line 62) no Hoare annotation was computed. [2020-09-24 15:09:11,222 INFO L268 CegarLoopResult]: For program point L58(line 58) no Hoare annotation was computed. [2020-09-24 15:09:11,222 INFO L268 CegarLoopResult]: For program point L25(lines 25 47) no Hoare annotation was computed. [2020-09-24 15:09:11,222 INFO L268 CegarLoopResult]: For program point L13(line 13) no Hoare annotation was computed. [2020-09-24 15:09:11,222 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 7 76) no Hoare annotation was computed. [2020-09-24 15:09:11,222 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-24 15:09:11,222 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-24 15:09:11,222 INFO L268 CegarLoopResult]: For program point L38(line 38) no Hoare annotation was computed. [2020-09-24 15:09:11,223 INFO L268 CegarLoopResult]: For program point L67(line 67) no Hoare annotation was computed. [2020-09-24 15:09:11,223 INFO L268 CegarLoopResult]: For program point L34(line 34) no Hoare annotation was computed. [2020-09-24 15:09:11,223 INFO L268 CegarLoopResult]: For program point L34-1(line 34) no Hoare annotation was computed. [2020-09-24 15:09:11,223 INFO L268 CegarLoopResult]: For program point L34-2(line 34) no Hoare annotation was computed. [2020-09-24 15:09:11,223 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 61) no Hoare annotation was computed. [2020-09-24 15:09:11,224 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 7 76) the Hoare annotation is: (= |old(~__return_107~0)| ~__return_107~0) [2020-09-24 15:09:11,224 INFO L268 CegarLoopResult]: For program point L59(lines 59 68) no Hoare annotation was computed. [2020-09-24 15:09:11,224 INFO L268 CegarLoopResult]: For program point L55(line 55) no Hoare annotation was computed. [2020-09-24 15:09:11,224 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-24 15:09:11,224 INFO L268 CegarLoopResult]: For program point L14(lines 14 75) no Hoare annotation was computed. [2020-09-24 15:09:11,224 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-24 15:09:11,224 INFO L268 CegarLoopResult]: For program point L10(line 10) no Hoare annotation was computed. [2020-09-24 15:09:11,224 INFO L268 CegarLoopResult]: For program point L35(lines 35 46) no Hoare annotation was computed. [2020-09-24 15:09:11,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 03:09:11 BoogieIcfgContainer [2020-09-24 15:09:11,245 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 15:09:11,248 INFO L168 Benchmark]: Toolchain (without parser) took 10181.23 ms. Allocated memory was 140.0 MB in the beginning and 235.9 MB in the end (delta: 95.9 MB). Free memory was 103.6 MB in the beginning and 93.5 MB in the end (delta: 10.0 MB). Peak memory consumption was 106.0 MB. Max. memory is 7.1 GB. [2020-09-24 15:09:11,249 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 15:09:11,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.36 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:09:11,252 INFO L168 Benchmark]: Boogie Preprocessor took 117.40 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 93.2 MB in the beginning and 180.1 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-24 15:09:11,253 INFO L168 Benchmark]: RCFGBuilder took 398.35 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 164.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-09-24 15:09:11,254 INFO L168 Benchmark]: TraceAbstraction took 9343.98 ms. Allocated memory was 201.3 MB in the beginning and 235.9 MB in the end (delta: 34.6 MB). Free memory was 164.8 MB in the beginning and 93.5 MB in the end (delta: 71.3 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. [2020-09-24 15:09:11,258 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 301.36 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 93.2 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 117.40 ms. Allocated memory was 140.0 MB in the beginning and 201.3 MB in the end (delta: 61.3 MB). Free memory was 93.2 MB in the beginning and 180.1 MB in the end (delta: -86.9 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 398.35 ms. Allocated memory is still 201.3 MB. Free memory was 180.1 MB in the beginning and 164.8 MB in the end (delta: 15.2 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9343.98 ms. Allocated memory was 201.3 MB in the beginning and 235.9 MB in the end (delta: 34.6 MB). Free memory was 164.8 MB in the beginning and 93.5 MB in the end (delta: 71.3 MB). Peak memory consumption was 105.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 61]: 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: 8]: Loop Invariant Derived loop invariant: (\old(__return_107) == __return_107 && main__x / 4294967296 * 4294967296 + (main__x / 4294967296 * -4294967296 + main__x) / 3 * 3 == main__x) || ((\old(__return_107) == __return_107 && main__y / 4294967296 <= 0) && 1 <= main__y) - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 44 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 9.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 7.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 137 SDtfs, 176 SDslu, 64 SDs, 0 SdLazy, 392 SolverSat, 13 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=2, 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, 3 MinimizatonAttempts, 22 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 7 NumberOfFragments, 48 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 16105 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 10/10 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...