/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 14:01:05,406 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 14:01:05,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 14:01:05,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 14:01:05,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 14:01:05,422 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 14:01:05,424 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 14:01:05,426 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 14:01:05,428 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 14:01:05,428 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 14:01:05,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 14:01:05,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 14:01:05,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 14:01:05,432 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 14:01:05,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 14:01:05,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 14:01:05,435 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 14:01:05,436 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 14:01:05,438 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 14:01:05,441 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 14:01:05,442 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 14:01:05,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 14:01:05,445 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 14:01:05,446 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 14:01:05,449 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 14:01:05,457 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 14:01:05,458 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 14:01:05,459 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 14:01:05,460 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 14:01:05,470 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 14:01:05,470 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 14:01:05,471 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 14:01:05,472 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 14:01:05,472 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 14:01:05,472 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 14:01:05,472 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 14:01:05,472 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 14:01:05,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 14:01:05,473 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 14:01:05,473 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 14:01:05,473 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 14:01:05,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 14:01:05,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 14:01:05,474 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 14:01:05,474 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 14:01:05,474 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 14:01:05,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 14:01:05,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 14:01:05,475 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 14:01:05,475 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 14:01:05,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 14:01:05,475 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 14:01:05,736 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 14:01:05,750 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 14:01:05,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 14:01:05,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 14:01:05,756 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 14:01:05,756 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-07 14:01:05,822 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59956561/7e54a1c1e66e49c79273a557bccf9dd9/FLAGf0ad38850 [2020-07-07 14:01:06,309 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 14:01:06,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2020-07-07 14:01:06,316 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59956561/7e54a1c1e66e49c79273a557bccf9dd9/FLAGf0ad38850 [2020-07-07 14:01:06,722 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f59956561/7e54a1c1e66e49c79273a557bccf9dd9 [2020-07-07 14:01:06,734 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 14:01:06,736 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 14:01:06,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:06,740 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 14:01:06,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 14:01:06,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:06,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11236a62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06, skipping insertion in model container [2020-07-07 14:01:06,748 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:06,757 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 14:01:06,779 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 14:01:06,938 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:06,942 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 14:01:06,961 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 14:01:06,977 INFO L208 MainTranslator]: Completed translation [2020-07-07 14:01:06,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06 WrapperNode [2020-07-07 14:01:06,978 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 14:01:06,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 14:01:06,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 14:01:06,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 14:01:06,994 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:06,994 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:07,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:07,000 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:07,005 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:07,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:07,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (1/1) ... [2020-07-07 14:01:07,014 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 14:01:07,014 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 14:01:07,014 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 14:01:07,014 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 14:01:07,015 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (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 [2020-07-07 14:01:07,164 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 14:01:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 14:01:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-07-07 14:01:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 14:01:07,165 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 14:01:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 14:01:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 14:01:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-07-07 14:01:07,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 14:01:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 14:01:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 14:01:07,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 14:01:07,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 14:01:07,459 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 14:01:07,459 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 14:01:07,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:07 BoogieIcfgContainer [2020-07-07 14:01:07,464 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 14:01:07,478 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 14:01:07,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 14:01:07,487 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 14:01:07,487 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 02:01:06" (1/3) ... [2020-07-07 14:01:07,488 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1e419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:07, skipping insertion in model container [2020-07-07 14:01:07,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 02:01:06" (2/3) ... [2020-07-07 14:01:07,489 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6c1e419 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 02:01:07, skipping insertion in model container [2020-07-07 14:01:07,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 02:01:07" (3/3) ... [2020-07-07 14:01:07,492 INFO L109 eAbstractionObserver]: Analyzing ICFG id_trans.i [2020-07-07 14:01:07,505 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 14:01:07,520 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 14:01:07,531 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 14:01:07,551 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 14:01:07,552 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 14:01:07,552 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 14:01:07,552 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 14:01:07,552 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 14:01:07,552 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 14:01:07,552 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 14:01:07,553 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 14:01:07,569 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-07 14:01:07,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-07-07 14:01:07,580 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:07,581 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] [2020-07-07 14:01:07,582 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:07,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:07,588 INFO L82 PathProgramCache]: Analyzing trace with hash 1049898450, now seen corresponding path program 1 times [2020-07-07 14:01:07,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:07,598 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [599483595] [2020-07-07 14:01:07,598 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:07,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:07,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:07,824 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:07,826 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [599483595] [2020-07-07 14:01:07,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:07,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 14:01:07,829 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [643609683] [2020-07-07 14:01:07,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 14:01:07,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:07,844 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 14:01:07,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 14:01:07,847 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-07-07 14:01:07,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:07,993 INFO L93 Difference]: Finished difference Result 73 states and 98 transitions. [2020-07-07 14:01:07,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 14:01:07,996 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-07-07 14:01:07,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:08,007 INFO L225 Difference]: With dead ends: 73 [2020-07-07 14:01:08,007 INFO L226 Difference]: Without dead ends: 45 [2020-07-07 14:01:08,012 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 14:01:08,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-07-07 14:01:08,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2020-07-07 14:01:08,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-07 14:01:08,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-07-07 14:01:08,060 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 25 [2020-07-07 14:01:08,061 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:08,061 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-07-07 14:01:08,061 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 14:01:08,061 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-07-07 14:01:08,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-07 14:01:08,064 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:08,064 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 14:01:08,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 14:01:08,065 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:08,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:08,066 INFO L82 PathProgramCache]: Analyzing trace with hash 56397381, now seen corresponding path program 1 times [2020-07-07 14:01:08,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:08,066 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788922930] [2020-07-07 14:01:08,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:08,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 14:01:08,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 14:01:08,183 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:08,184 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788922930] [2020-07-07 14:01:08,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 14:01:08,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 14:01:08,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575461210] [2020-07-07 14:01:08,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 14:01:08,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 14:01:08,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 14:01:08,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 14:01:08,187 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-07-07 14:01:08,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 14:01:08,249 INFO L93 Difference]: Finished difference Result 48 states and 52 transitions. [2020-07-07 14:01:08,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 14:01:08,250 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-07-07 14:01:08,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 14:01:08,253 INFO L225 Difference]: With dead ends: 48 [2020-07-07 14:01:08,254 INFO L226 Difference]: Without dead ends: 46 [2020-07-07 14:01:08,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 14:01:08,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-07 14:01:08,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-07-07 14:01:08,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-07-07 14:01:08,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 50 transitions. [2020-07-07 14:01:08,270 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 50 transitions. Word has length 30 [2020-07-07 14:01:08,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 14:01:08,271 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 50 transitions. [2020-07-07 14:01:08,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 14:01:08,271 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 50 transitions. [2020-07-07 14:01:08,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 14:01:08,273 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 14:01:08,273 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 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] [2020-07-07 14:01:08,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 14:01:08,274 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 14:01:08,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 14:01:08,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1292887515, now seen corresponding path program 1 times [2020-07-07 14:01:08,275 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 14:01:08,275 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235452131] [2020-07-07 14:01:08,275 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 14:01:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 14:01:08,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 14:01:08,364 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 14:01:08,364 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 14:01:08,364 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 14:01:08,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 14:01:08,382 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 02:01:08 BoogieIcfgContainer [2020-07-07 14:01:08,382 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 14:01:08,385 INFO L168 Benchmark]: Toolchain (without parser) took 1649.02 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 101.7 MB in the beginning and 113.0 MB in the end (delta: -11.3 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:08,386 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 14:01:08,387 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.72 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:08,388 INFO L168 Benchmark]: Boogie Preprocessor took 35.34 ms. Allocated memory is still 136.3 MB. Free memory was 91.6 MB in the beginning and 90.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:08,389 INFO L168 Benchmark]: RCFGBuilder took 449.73 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.0 MB in the beginning and 165.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:08,390 INFO L168 Benchmark]: TraceAbstraction took 904.62 ms. Allocated memory is still 200.3 MB. Free memory was 164.6 MB in the beginning and 113.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-07-07 14:01:08,394 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 136.3 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 238.72 ms. Allocated memory is still 136.3 MB. Free memory was 101.5 MB in the beginning and 91.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.34 ms. Allocated memory is still 136.3 MB. Free memory was 91.6 MB in the beginning and 90.0 MB in the end (delta: 1.6 MB). Peak memory consumption was 1.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 449.73 ms. Allocated memory was 136.3 MB in the beginning and 200.3 MB in the end (delta: 64.0 MB). Free memory was 90.0 MB in the beginning and 165.3 MB in the end (delta: -75.3 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 904.62 ms. Allocated memory is still 200.3 MB. Free memory was 164.6 MB in the beginning and 113.0 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 8]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int idBitLength, material_length, nlen; [L15] int j, k; [L16] nlen = __VERIFIER_nondet_int() [L17] idBitLength = __VERIFIER_nondet_int() [L18] material_length = __VERIFIER_nondet_int() [L19] COND FALSE !(!( nlen == idBitLength / 32 )) [L20] j = 0 [L20] COND TRUE (j < idBitLength / 8) && (j < material_length) [L21] CALL __VERIFIER_assert( 0 <= j) [L7] COND FALSE !(!(cond)) [L21] RET __VERIFIER_assert( 0 <= j) [L22] CALL __VERIFIER_assert( j < material_length ) [L7] COND FALSE !(!(cond)) [L22] RET __VERIFIER_assert( j < material_length ) [L23] CALL __VERIFIER_assert( 0 <= j/4 ) [L7] COND FALSE !(!(cond)) [L23] RET __VERIFIER_assert( 0 <= j/4 ) [L24] CALL __VERIFIER_assert( j/4 < nlen) [L7] COND TRUE !(cond) [L8] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.8s, OverallIterations: 3, TraceHistogramMax: 4, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 15 SDslu, 206 SDs, 0 SdLazy, 52 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred 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, 2 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...