/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.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 23:05:38,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 23:05:38,462 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 23:05:38,488 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 23:05:38,499 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 23:05:38,500 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 23:05:38,501 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 23:05:38,502 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 23:05:38,503 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 23:05:38,504 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 23:05:38,506 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 23:05:38,509 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 23:05:38,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 23:05:38,512 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 23:05:38,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 23:05:38,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 23:05:38,517 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-08-22 23:05:38,526 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 23:05:38,527 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 23:05:38,528 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 23:05:38,528 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 23:05:38,539 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 23:05:38,539 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 23:05:38,541 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 23:05:38,541 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 23:05:38,542 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 23:05:38,542 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 23:05:38,542 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 23:05:38,542 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 23:05:38,542 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 23:05:38,543 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 23:05:38,543 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 23:05:38,543 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 23:05:38,543 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 23:05:38,543 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 23:05:38,544 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 23:05:38,544 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 23:05:38,544 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 23:05:38,544 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 23:05:38,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 23:05:38,545 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 23:05:38,545 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 23:05:38,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 23:05:38,545 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-08-22 23:05:38,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 23:05:38,933 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 23:05:38,940 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 23:05:38,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 23:05:38,944 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 23:05:38,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-08-22 23:05:39,031 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2981be3d9/4f67d1a92bda46e5b811935d67c69090/FLAGc883de000 [2020-08-22 23:05:39,587 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 23:05:39,588 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006_variant.i [2020-08-22 23:05:39,594 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2981be3d9/4f67d1a92bda46e5b811935d67c69090/FLAGc883de000 [2020-08-22 23:05:39,938 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2981be3d9/4f67d1a92bda46e5b811935d67c69090 [2020-08-22 23:05:39,949 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 23:05:39,951 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 23:05:39,952 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:39,953 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 23:05:39,956 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 23:05:39,957 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:39" (1/1) ... [2020-08-22 23:05:39,960 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@444820af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:39, skipping insertion in model container [2020-08-22 23:05:39,960 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 11:05:39" (1/1) ... [2020-08-22 23:05:39,968 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 23:05:39,991 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 23:05:40,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:40,157 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 23:05:40,176 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 23:05:40,192 INFO L208 MainTranslator]: Completed translation [2020-08-22 23:05:40,193 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40 WrapperNode [2020-08-22 23:05:40,193 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 23:05:40,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 23:05:40,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 23:05:40,195 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 23:05:40,210 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,210 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,304 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,310 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,311 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (1/1) ... [2020-08-22 23:05:40,313 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 23:05:40,313 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 23:05:40,313 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 23:05:40,314 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 23:05:40,315 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (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 [2020-08-22 23:05:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 23:05:40,386 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 23:05:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 23:05:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 23:05:40,387 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 23:05:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 23:05:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 23:05:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 23:05:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 23:05:40,387 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 23:05:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 23:05:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 23:05:40,388 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 23:05:40,632 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 23:05:40,633 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-08-22 23:05:40,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:40 BoogieIcfgContainer [2020-08-22 23:05:40,639 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 23:05:40,640 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 23:05:40,640 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 23:05:40,644 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 23:05:40,644 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 11:05:39" (1/3) ... [2020-08-22 23:05:40,645 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f57c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:40, skipping insertion in model container [2020-08-22 23:05:40,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 11:05:40" (2/3) ... [2020-08-22 23:05:40,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8f57c6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 11:05:40, skipping insertion in model container [2020-08-22 23:05:40,646 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 11:05:40" (3/3) ... [2020-08-22 23:05:40,648 INFO L109 eAbstractionObserver]: Analyzing ICFG jm2006_variant.i [2020-08-22 23:05:40,660 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 23:05:40,669 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 23:05:40,714 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 23:05:40,768 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 23:05:40,768 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 23:05:40,768 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 23:05:40,768 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 23:05:40,769 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 23:05:40,769 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 23:05:40,769 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 23:05:40,769 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 23:05:40,785 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-22 23:05:40,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 23:05:40,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:40,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:40,801 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:40,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:40,807 INFO L82 PathProgramCache]: Analyzing trace with hash 394160949, now seen corresponding path program 1 times [2020-08-22 23:05:40,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:40,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020975085] [2020-08-22 23:05:40,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:40,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:40,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:40,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:40,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:40,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020975085] [2020-08-22 23:05:40,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:40,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-08-22 23:05:40,957 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680302689] [2020-08-22 23:05:40,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-08-22 23:05:40,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:40,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-08-22 23:05:40,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 23:05:40,982 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 2 states. [2020-08-22 23:05:41,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:41,014 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-08-22 23:05:41,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-08-22 23:05:41,016 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 23 [2020-08-22 23:05:41,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:41,026 INFO L225 Difference]: With dead ends: 53 [2020-08-22 23:05:41,026 INFO L226 Difference]: Without dead ends: 31 [2020-08-22 23:05:41,031 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-08-22 23:05:41,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-08-22 23:05:41,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-08-22 23:05:41,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 23:05:41,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2020-08-22 23:05:41,087 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 23 [2020-08-22 23:05:41,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:41,088 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2020-08-22 23:05:41,088 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-08-22 23:05:41,089 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2020-08-22 23:05:41,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-08-22 23:05:41,090 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:41,090 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:41,090 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 23:05:41,091 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:41,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:41,091 INFO L82 PathProgramCache]: Analyzing trace with hash 79240288, now seen corresponding path program 1 times [2020-08-22 23:05:41,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:41,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [150937330] [2020-08-22 23:05:41,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:41,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:41,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:41,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:41,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [150937330] [2020-08-22 23:05:41,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 23:05:41,446 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 23:05:41,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241860485] [2020-08-22 23:05:41,449 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 23:05:41,449 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:41,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 23:05:41,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-08-22 23:05:41,450 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 9 states. [2020-08-22 23:05:41,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:41,727 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2020-08-22 23:05:41,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 23:05:41,728 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-08-22 23:05:41,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:41,730 INFO L225 Difference]: With dead ends: 40 [2020-08-22 23:05:41,730 INFO L226 Difference]: Without dead ends: 34 [2020-08-22 23:05:41,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2020-08-22 23:05:41,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-08-22 23:05:41,739 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-08-22 23:05:41,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 23:05:41,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2020-08-22 23:05:41,741 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 23 [2020-08-22 23:05:41,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:41,742 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2020-08-22 23:05:41,742 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 23:05:41,742 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2020-08-22 23:05:41,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 23:05:41,744 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 23:05:41,744 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 23:05:41,744 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 23:05:41,745 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 23:05:41,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 23:05:41,745 INFO L82 PathProgramCache]: Analyzing trace with hash 821188708, now seen corresponding path program 1 times [2020-08-22 23:05:41,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 23:05:41,746 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [856361700] [2020-08-22 23:05:41,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 23:05:41,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 23:05:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 23:05:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 23:05:42,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [856361700] [2020-08-22 23:05:42,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-22 23:05:42,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-08-22 23:05:42,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870634348] [2020-08-22 23:05:42,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-08-22 23:05:42,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 23:05:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-08-22 23:05:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-08-22 23:05:42,165 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand 14 states. [2020-08-22 23:05:42,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 23:05:42,551 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2020-08-22 23:05:42,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-08-22 23:05:42,552 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 31 [2020-08-22 23:05:42,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 23:05:42,552 INFO L225 Difference]: With dead ends: 34 [2020-08-22 23:05:42,553 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 23:05:42,554 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=83, Invalid=469, Unknown=0, NotChecked=0, Total=552 [2020-08-22 23:05:42,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 23:05:42,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 23:05:42,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 23:05:42,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 23:05:42,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 31 [2020-08-22 23:05:42,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 23:05:42,556 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 23:05:42,556 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-08-22 23:05:42,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 23:05:42,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 23:05:42,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 23:05:42,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 23:05:42,862 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:42,863 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:42,863 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-08-22 23:05:42,863 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 23:05:42,863 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 23:05:42,864 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-08-22 23:05:42,864 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:42,864 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:42,864 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-08-22 23:05:42,864 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-08-22 23:05:42,865 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-08-22 23:05:42,865 INFO L271 CegarLoopResult]: At program point L27(lines 27 29) the Hoare annotation is: true [2020-08-22 23:05:42,866 INFO L264 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 main_~i~0 main_~z~0 1)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-22 23:05:42,866 INFO L271 CegarLoopResult]: At program point mainEXIT(lines 13 31) the Hoare annotation is: true [2020-08-22 23:05:42,867 INFO L264 CegarLoopResult]: At program point L25-1(line 25) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 main_~i~0 |main_#t~post3| 1)) (.cse2 (+ main_~y~0 main_~i~0 main_~z~0 1)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse0 .cse2) (<= .cse2 .cse0))) [2020-08-22 23:05:42,867 INFO L264 CegarLoopResult]: At program point L23(line 23) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~y~0 main_~i~0 main_~z~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-22 23:05:42,867 INFO L264 CegarLoopResult]: At program point L25-2(line 25) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 main_~i~0 |main_#t~post3| 1)) (.cse0 (+ main_~x~0 main_~j~0)) (.cse2 (+ main_~y~0 main_~i~0 main_~z~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= .cse2 .cse0) (<= .cse0 .cse2))) [2020-08-22 23:05:42,867 INFO L264 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: (let ((.cse0 (+ |main_#t~post2| main_~j~0)) (.cse2 (+ main_~x~0 main_~j~0)) (.cse1 (+ main_~y~0 main_~i~0 main_~z~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse2) (<= .cse1 .cse0) (<= .cse2 .cse1))) [2020-08-22 23:05:42,868 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 main_~i~0)) (.cse0 (+ main_~x~0 main_~j~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0))) [2020-08-22 23:05:42,868 INFO L264 CegarLoopResult]: At program point L23-2(line 23) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0 1)) (.cse0 (+ main_~y~0 main_~i~0 main_~z~0)) (.cse2 (+ |main_#t~post2| main_~j~0))) (and (<= .cse0 .cse1) (<= .cse2 .cse0) (<= .cse1 .cse0) (<= .cse0 .cse2))) [2020-08-22 23:05:42,869 INFO L271 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: true [2020-08-22 23:05:42,869 INFO L271 CegarLoopResult]: At program point L17(line 17) the Hoare annotation is: true [2020-08-22 23:05:42,869 INFO L271 CegarLoopResult]: At program point L17-1(line 17) the Hoare annotation is: true [2020-08-22 23:05:42,869 INFO L271 CegarLoopResult]: At program point L15(line 15) the Hoare annotation is: true [2020-08-22 23:05:42,869 INFO L271 CegarLoopResult]: At program point L15-1(line 15) the Hoare annotation is: true [2020-08-22 23:05:42,870 INFO L271 CegarLoopResult]: At program point L15-2(line 15) the Hoare annotation is: true [2020-08-22 23:05:42,870 INFO L271 CegarLoopResult]: At program point mainFINAL(lines 13 31) the Hoare annotation is: true [2020-08-22 23:05:42,870 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: true [2020-08-22 23:05:42,870 INFO L264 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse5 (+ main_~y~0 main_~z~0))) (let ((.cse0 (<= .cse5 0)) (.cse3 (<= 0 .cse5)) (.cse1 (+ main_~x~0 main_~j~0))) (or (let ((.cse2 (+ main_~y~0 main_~i~0))) (and .cse0 (<= .cse1 .cse2) (<= .cse2 .cse1) (<= main_~i~0 main_~x~0) .cse3 (<= main_~x~0 main_~i~0))) (let ((.cse4 (+ main_~y~0 main_~i~0 main_~z~0))) (and .cse0 .cse3 (<= .cse4 .cse1) (<= .cse1 .cse4)))))) [2020-08-22 23:05:42,871 INFO L264 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0 1)) (.cse0 (+ main_~y~0 main_~i~0 main_~z~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-22 23:05:42,871 INFO L264 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0)) [2020-08-22 23:05:42,871 INFO L264 CegarLoopResult]: At program point L22-2(lines 22 26) the Hoare annotation is: (let ((.cse1 (+ main_~x~0 main_~j~0)) (.cse0 (+ main_~y~0 main_~i~0 main_~z~0))) (and (<= .cse0 .cse1) (<= .cse1 .cse0))) [2020-08-22 23:05:42,873 INFO L264 CegarLoopResult]: At program point L22-3(lines 13 31) the Hoare annotation is: (let ((.cse4 (< 0 (+ main_~y~0 main_~z~0 1))) (.cse5 (+ main_~x~0 main_~j~0)) (.cse7 (<= (+ main_~y~0 main_~z~0) 0)) (.cse8 (+ main_~y~0 main_~i~0 main_~z~0))) (let ((.cse0 (or .cse7 (<= .cse8 main_~j~0))) (.cse2 (<= .cse5 .cse8)) (.cse1 (<= .cse8 .cse5)) (.cse3 (or (<= main_~j~0 .cse8) .cse4))) (or (and .cse0 .cse1 .cse2 .cse3) (let ((.cse6 (+ main_~y~0 main_~i~0))) (and .cse0 (or .cse4 .cse2) (<= .cse5 .cse6) (<= .cse6 .cse5) (or .cse7 .cse1) (<= main_~i~0 main_~x~0) (<= main_~x~0 main_~i~0) .cse3))))) [2020-08-22 23:05:42,873 INFO L271 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: true [2020-08-22 23:05:42,873 INFO L271 CegarLoopResult]: At program point L18-1(line 18) the Hoare annotation is: true [2020-08-22 23:05:42,874 INFO L271 CegarLoopResult]: At program point L16(line 16) the Hoare annotation is: true [2020-08-22 23:05:42,874 INFO L271 CegarLoopResult]: At program point L16-1(line 16) the Hoare annotation is: true [2020-08-22 23:05:42,874 INFO L271 CegarLoopResult]: At program point L14(line 14) the Hoare annotation is: true [2020-08-22 23:05:42,875 INFO L271 CegarLoopResult]: At program point L16-2(line 16) the Hoare annotation is: true [2020-08-22 23:05:42,875 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-08-22 23:05:42,876 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertEXIT(lines 6 11) the Hoare annotation is: true [2020-08-22 23:05:42,876 INFO L264 CegarLoopResult]: At program point L8(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:05:42,877 INFO L264 CegarLoopResult]: At program point L7(lines 7 9) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2020-08-22 23:05:42,877 INFO L271 CegarLoopResult]: At program point L7-2(lines 6 11) the Hoare annotation is: true [2020-08-22 23:05:42,877 INFO L264 CegarLoopResult]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-08-22 23:05:42,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 11:05:42 BoogieIcfgContainer [2020-08-22 23:05:42,909 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 23:05:42,914 INFO L168 Benchmark]: Toolchain (without parser) took 2960.50 ms. Allocated memory was 137.9 MB in the beginning and 231.7 MB in the end (delta: 93.8 MB). Free memory was 102.7 MB in the beginning and 93.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 103.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:42,916 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-22 23:05:42,917 INFO L168 Benchmark]: CACSL2BoogieTranslator took 241.54 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 93.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:42,919 INFO L168 Benchmark]: Boogie Preprocessor took 118.68 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 179.5 MB in the end (delta: -86.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:42,921 INFO L168 Benchmark]: RCFGBuilder took 325.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 164.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:42,928 INFO L168 Benchmark]: TraceAbstraction took 2269.42 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 164.8 MB in the beginning and 93.1 MB in the end (delta: 71.7 MB). Peak memory consumption was 102.7 MB. Max. memory is 7.1 GB. [2020-08-22 23:05:42,940 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 241.54 ms. Allocated memory is still 137.9 MB. Free memory was 102.5 MB in the beginning and 93.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.68 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 93.1 MB in the beginning and 179.5 MB in the end (delta: -86.4 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 325.54 ms. Allocated memory is still 200.8 MB. Free memory was 178.8 MB in the beginning and 164.8 MB in the end (delta: 14.0 MB). Peak memory consumption was 14.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2269.42 ms. Allocated memory was 200.8 MB in the beginning and 231.7 MB in the end (delta: 30.9 MB). Free memory was 164.8 MB in the beginning and 93.1 MB in the end (delta: 71.7 MB). Peak memory consumption was 102.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: y + i + z <= x + j && x + j <= y + i + z - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 6]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 34 SDslu, 249 SDs, 0 SdLazy, 234 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 40 LocationsWithAnnotation, 52 PreInvPairs, 68 NumberOfFragments, 456 HoareAnnotationTreeSize, 52 FomulaSimplifications, 159 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 40 FomulaSimplificationsInter, 5 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 74 ConstructedInterpolants, 0 QuantifiedInterpolants, 11018 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 0/1 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...