/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/loops/sum01_bug02.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:58:53,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:58:53,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:58:53,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:58:53,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:58:53,380 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:58:53,382 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:58:53,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:58:53,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:58:53,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:58:53,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:58:53,401 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:58:53,402 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:58:53,402 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:58:53,405 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:58:53,406 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:58:53,408 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:58:53,410 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:58:53,412 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:58:53,418 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:58:53,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:58:53,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:58:53,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:58:53,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:58:53,428 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-07 13:58:53,441 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:58:53,442 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:58:53,443 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:58:53,444 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 13:58:53,453 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:58:53,453 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:58:53,454 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:58:53,454 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:58:53,455 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:58:53,455 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:58:53,455 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:58:53,455 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:58:53,455 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:58:53,456 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:58:53,456 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:58:53,456 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:58:53,456 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:58:53,456 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:58:53,457 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:58:53,457 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:58:53,457 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:58:53,457 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:58:53,457 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:58:53,458 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:58:53,458 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:58:53,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:58:53,458 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:58:53,743 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:58:53,756 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:58:53,759 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:58:53,760 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:58:53,761 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:58:53,761 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum01_bug02.i [2020-07-07 13:58:53,818 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/298e9d6d4/5d233b477f9b4b0ba7951e784eec6345/FLAGb22fde15c [2020-07-07 13:58:54,236 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:58:54,237 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/sum01_bug02.i [2020-07-07 13:58:54,243 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/298e9d6d4/5d233b477f9b4b0ba7951e784eec6345/FLAGb22fde15c [2020-07-07 13:58:54,694 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/298e9d6d4/5d233b477f9b4b0ba7951e784eec6345 [2020-07-07 13:58:54,704 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:58:54,706 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:58:54,707 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:54,707 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:58:54,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:58:54,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,714 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39db0f6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54, skipping insertion in model container [2020-07-07 13:58:54,714 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:58:54,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:58:54,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:54,883 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:58:54,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:58:54,912 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:58:54,913 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54 WrapperNode [2020-07-07 13:58:54,913 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:58:54,914 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:58:54,914 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:58:54,914 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:58:54,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,927 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,932 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,932 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,935 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:54,940 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (1/1) ... [2020-07-07 13:58:55,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:58:55,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:58:55,029 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:58:55,029 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:58:55,030 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (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 13:58:55,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:58:55,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:58:55,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-07-07 13:58:55,084 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:58:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:58:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-07-07 13:58:55,084 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-07-07 13:58:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:58:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:58:55,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:58:55,272 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:58:55,272 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-07-07 13:58:55,276 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:55 BoogieIcfgContainer [2020-07-07 13:58:55,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:58:55,278 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:58:55,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:58:55,281 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:58:55,281 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:58:54" (1/3) ... [2020-07-07 13:58:55,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700f140d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:55, skipping insertion in model container [2020-07-07 13:58:55,282 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:58:54" (2/3) ... [2020-07-07 13:58:55,282 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@700f140d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:58:55, skipping insertion in model container [2020-07-07 13:58:55,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:58:55" (3/3) ... [2020-07-07 13:58:55,284 INFO L109 eAbstractionObserver]: Analyzing ICFG sum01_bug02.i [2020-07-07 13:58:55,295 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:58:55,302 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:58:55,319 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:58:55,347 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:58:55,347 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:58:55,348 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:58:55,348 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:58:55,348 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:58:55,348 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:58:55,348 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:58:55,348 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:58:55,376 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-07-07 13:58:55,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 13:58:55,393 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:55,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:55,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:55,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:55,401 INFO L82 PathProgramCache]: Analyzing trace with hash 79158399, now seen corresponding path program 1 times [2020-07-07 13:58:55,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:55,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [315824116] [2020-07-07 13:58:55,411 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:55,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:55,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:55,544 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 13:58:55,544 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:55,546 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [315824116] [2020-07-07 13:58:55,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:55,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-07-07 13:58:55,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248872032] [2020-07-07 13:58:55,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 2 states [2020-07-07 13:58:55,554 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:55,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2020-07-07 13:58:55,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2020-07-07 13:58:55,570 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 2 states. [2020-07-07 13:58:55,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:55,595 INFO L93 Difference]: Finished difference Result 41 states and 45 transitions. [2020-07-07 13:58:55,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-07-07 13:58:55,597 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 15 [2020-07-07 13:58:55,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:55,605 INFO L225 Difference]: With dead ends: 41 [2020-07-07 13:58:55,605 INFO L226 Difference]: Without dead ends: 24 [2020-07-07 13:58:55,609 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 [2020-07-07 13:58:55,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-07-07 13:58:55,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-07-07 13:58:55,645 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-07-07 13:58:55,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 25 transitions. [2020-07-07 13:58:55,648 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 25 transitions. Word has length 15 [2020-07-07 13:58:55,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:55,648 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 25 transitions. [2020-07-07 13:58:55,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 2 states. [2020-07-07 13:58:55,648 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 25 transitions. [2020-07-07 13:58:55,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-07-07 13:58:55,649 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:55,649 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:55,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:58:55,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:55,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:55,651 INFO L82 PathProgramCache]: Analyzing trace with hash 62535021, now seen corresponding path program 1 times [2020-07-07 13:58:55,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:55,651 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798434736] [2020-07-07 13:58:55,652 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:58:55,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:55,742 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 13:58:55,742 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:55,742 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798434736] [2020-07-07 13:58:55,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:55,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:58:55,743 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560146645] [2020-07-07 13:58:55,744 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:58:55,744 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:55,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:58:55,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:58:55,746 INFO L87 Difference]: Start difference. First operand 24 states and 25 transitions. Second operand 5 states. [2020-07-07 13:58:55,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:55,805 INFO L93 Difference]: Finished difference Result 38 states and 40 transitions. [2020-07-07 13:58:55,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 13:58:55,805 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-07-07 13:58:55,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:55,807 INFO L225 Difference]: With dead ends: 38 [2020-07-07 13:58:55,807 INFO L226 Difference]: Without dead ends: 33 [2020-07-07 13:58:55,809 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 13:58:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-07 13:58:55,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-07-07 13:58:55,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 13:58:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2020-07-07 13:58:55,819 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 15 [2020-07-07 13:58:55,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:55,820 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2020-07-07 13:58:55,820 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:58:55,820 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2020-07-07 13:58:55,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-07 13:58:55,821 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:55,822 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] [2020-07-07 13:58:55,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:58:55,824 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:55,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:55,825 INFO L82 PathProgramCache]: Analyzing trace with hash 268436001, now seen corresponding path program 1 times [2020-07-07 13:58:55,825 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:55,826 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1518538267] [2020-07-07 13:58:55,826 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 13 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 13 to 23 Garbage collection #2: 23 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 23 to 43 Garbage collection #3: 43 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 43 to 83 [2020-07-07 13:58:56,449 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 37 [2020-07-07 13:58:56,567 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 36 [2020-07-07 13:58:56,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:56,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:58:56,846 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 13:58:57,139 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:58:57,140 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1518538267] [2020-07-07 13:58:57,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:58:57,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-07 13:58:57,141 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632732656] [2020-07-07 13:58:57,141 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-07 13:58:57,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:58:57,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-07 13:58:57,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=247, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:58:57,143 INFO L87 Difference]: Start difference. First operand 32 states and 34 transitions. Second operand 16 states. [2020-07-07 13:58:57,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:58:57,446 INFO L93 Difference]: Finished difference Result 60 states and 64 transitions. [2020-07-07 13:58:57,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 13:58:57,446 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 24 [2020-07-07 13:58:57,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:58:57,448 INFO L225 Difference]: With dead ends: 60 [2020-07-07 13:58:57,448 INFO L226 Difference]: Without dead ends: 55 [2020-07-07 13:58:57,449 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2020-07-07 13:58:57,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-07-07 13:58:57,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 43. [2020-07-07 13:58:57,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-07-07 13:58:57,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-07-07 13:58:57,460 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 24 [2020-07-07 13:58:57,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:58:57,461 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-07-07 13:58:57,461 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-07 13:58:57,461 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-07-07 13:58:57,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-07 13:58:57,462 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:58:57,463 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:58:57,463 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:58:57,463 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:58:57,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:58:57,464 INFO L82 PathProgramCache]: Analyzing trace with hash -635017609, now seen corresponding path program 1 times [2020-07-07 13:58:57,464 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:58:57,464 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1987494112] [2020-07-07 13:58:57,465 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 11 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 11 to 19 Garbage collection #2: 19 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 19 to 37 Garbage collection #3: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #1: 13 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 13 to 23 Garbage collection #2: 23 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 23 to 43 Garbage collection #3: 43 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 43 to 83 [2020-07-07 13:59:01,846 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 38 [2020-07-07 13:59:01,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:59:01,951 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: must have same length at de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.constructEpsilon(AcceleratedInterpolation.java:510) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:449) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-07 13:59:01,956 INFO L168 Benchmark]: Toolchain (without parser) took 7249.63 ms. Allocated memory was 140.0 MB in the beginning and 242.7 MB in the end (delta: 102.8 MB). Free memory was 104.9 MB in the beginning and 195.4 MB in the end (delta: -90.5 MB). Peak memory consumption was 112.2 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:01,957 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:59:01,958 INFO L168 Benchmark]: CACSL2BoogieTranslator took 206.59 ms. Allocated memory is still 140.0 MB. Free memory was 104.5 MB in the beginning and 95.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:01,959 INFO L168 Benchmark]: Boogie Preprocessor took 111.03 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 95.2 MB in the beginning and 184.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:01,960 INFO L168 Benchmark]: RCFGBuilder took 247.97 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 172.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:01,961 INFO L168 Benchmark]: TraceAbstraction took 6676.19 ms. Allocated memory was 205.0 MB in the beginning and 242.7 MB in the end (delta: 37.7 MB). Free memory was 171.5 MB in the beginning and 195.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:59:01,965 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.0 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 206.59 ms. Allocated memory is still 140.0 MB. Free memory was 104.5 MB in the beginning and 95.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 111.03 ms. Allocated memory was 140.0 MB in the beginning and 205.0 MB in the end (delta: 65.0 MB). Free memory was 95.2 MB in the beginning and 184.7 MB in the end (delta: -89.5 MB). Peak memory consumption was 15.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 247.97 ms. Allocated memory is still 205.0 MB. Free memory was 183.8 MB in the beginning and 172.2 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6676.19 ms. Allocated memory was 205.0 MB in the beginning and 242.7 MB in the end (delta: 37.7 MB). Free memory was 171.5 MB in the beginning and 195.4 MB in the end (delta: -23.9 MB). Peak memory consumption was 113.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: IllegalArgumentException: must have same length de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: must have same length: de.uni_freiburg.informatik.ultimate.lib.smtlibutils.SmtUtils.pairwiseEquality(SmtUtils.java:418) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...