/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/recursive/EvenOdd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:14:27,330 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:14:27,332 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:14:27,344 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:14:27,345 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:14:27,346 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:14:27,347 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:14:27,349 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:14:27,351 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:14:27,352 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:14:27,353 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:14:27,354 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:14:27,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:14:27,355 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:14:27,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:14:27,358 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:14:27,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:14:27,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:14:27,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:14:27,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:14:27,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:14:27,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:14:27,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:14:27,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:14:27,373 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-07-17 13:14:27,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:14:27,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:14:27,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:14:27,390 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:14:27,407 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:14:27,407 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:14:27,410 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:14:27,410 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:14:27,410 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:14:27,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:14:27,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:14:27,411 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:14:27,411 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:14:27,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:14:27,412 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:14:27,412 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:14:27,412 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:14:27,413 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:14:27,413 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:14:27,413 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:14:27,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:14:27,414 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:14:27,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:14:27,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:14:27,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:14:27,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:14:27,415 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:14:27,698 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:14:27,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:14:27,723 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:14:27,724 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:14:27,724 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:14:27,725 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-17 13:14:27,788 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d1a0892/531439d849f04922970f046680db1acd/FLAG111437653 [2020-07-17 13:14:28,190 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:14:28,191 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/EvenOdd01-1.c [2020-07-17 13:14:28,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d1a0892/531439d849f04922970f046680db1acd/FLAG111437653 [2020-07-17 13:14:28,626 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d3d1a0892/531439d849f04922970f046680db1acd [2020-07-17 13:14:28,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:14:28,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:14:28,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:28,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:14:28,644 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:14:28,645 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,648 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@69e0ab50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28, skipping insertion in model container [2020-07-17 13:14:28,648 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,656 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:14:28,673 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:14:28,832 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:28,835 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:14:28,853 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:14:28,867 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:14:28,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28 WrapperNode [2020-07-17 13:14:28,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:14:28,868 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:14:28,869 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:14:28,869 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:14:28,881 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,887 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,887 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,977 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,980 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,980 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (1/1) ... [2020-07-17 13:14:28,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:14:28,982 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:14:28,982 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:14:28,983 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:14:28,983 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (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 [2020-07-17 13:14:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:14:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:14:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isOdd [2020-07-17 13:14:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure isEven [2020-07-17 13:14:29,045 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:14:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:14:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:14:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure isOdd [2020-07-17 13:14:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure isEven [2020-07-17 13:14:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:14:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:14:29,046 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:14:29,383 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:14:29,384 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 13:14:29,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:29 BoogieIcfgContainer [2020-07-17 13:14:29,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:14:29,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:14:29,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:14:29,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:14:29,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:14:28" (1/3) ... [2020-07-17 13:14:29,394 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a8e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:29, skipping insertion in model container [2020-07-17 13:14:29,394 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:14:28" (2/3) ... [2020-07-17 13:14:29,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@177a8e30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:14:29, skipping insertion in model container [2020-07-17 13:14:29,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:14:29" (3/3) ... [2020-07-17 13:14:29,397 INFO L109 eAbstractionObserver]: Analyzing ICFG EvenOdd01-1.c [2020-07-17 13:14:29,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:14:29,415 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:14:29,430 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:14:29,451 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:14:29,452 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:14:29,452 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:14:29,452 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:14:29,452 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:14:29,452 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:14:29,452 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:14:29,453 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:14:29,470 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states. [2020-07-17 13:14:29,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-07-17 13:14:29,481 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:29,482 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:29,482 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:29,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:29,488 INFO L82 PathProgramCache]: Analyzing trace with hash 1047957633, now seen corresponding path program 1 times [2020-07-17 13:14:29,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:29,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166630265] [2020-07-17 13:14:29,495 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:29,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:29,928 WARN L193 SmtUtils]: Spent 137.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 25 [2020-07-17 13:14:29,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:30,006 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:30,011 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:30,013 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166630265] [2020-07-17 13:14:30,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:30,016 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 13:14:30,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921840247] [2020-07-17 13:14:30,022 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 13:14:30,022 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:30,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 13:14:30,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:14:30,040 INFO L87 Difference]: Start difference. First operand 44 states. Second operand 9 states. [2020-07-17 13:14:30,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:30,411 INFO L93 Difference]: Finished difference Result 62 states and 69 transitions. [2020-07-17 13:14:30,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 13:14:30,413 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 20 [2020-07-17 13:14:30,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:30,425 INFO L225 Difference]: With dead ends: 62 [2020-07-17 13:14:30,427 INFO L226 Difference]: Without dead ends: 40 [2020-07-17 13:14:30,435 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2020-07-17 13:14:30,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-07-17 13:14:30,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-07-17 13:14:30,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 13:14:30,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-07-17 13:14:30,534 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 20 [2020-07-17 13:14:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:30,535 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-07-17 13:14:30,535 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 13:14:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-07-17 13:14:30,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-17 13:14:30,552 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:30,553 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] [2020-07-17 13:14:30,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:14:30,556 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:30,556 INFO L82 PathProgramCache]: Analyzing trace with hash 1743555941, now seen corresponding path program 1 times [2020-07-17 13:14:30,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:30,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2141717732] [2020-07-17 13:14:30,558 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:30,875 WARN L193 SmtUtils]: Spent 127.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 16 [2020-07-17 13:14:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:30,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:30,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:30,957 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:30,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2141717732] [2020-07-17 13:14:30,959 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:30,959 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 13:14:30,960 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040924767] [2020-07-17 13:14:30,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 13:14:30,964 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:30,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 13:14:30,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-07-17 13:14:30,965 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 9 states. [2020-07-17 13:14:31,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:31,149 INFO L93 Difference]: Finished difference Result 49 states and 53 transitions. [2020-07-17 13:14:31,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 13:14:31,150 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 21 [2020-07-17 13:14:31,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:31,152 INFO L225 Difference]: With dead ends: 49 [2020-07-17 13:14:31,152 INFO L226 Difference]: Without dead ends: 42 [2020-07-17 13:14:31,154 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-07-17 13:14:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-17 13:14:31,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-07-17 13:14:31,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-07-17 13:14:31,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-07-17 13:14:31,165 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 21 [2020-07-17 13:14:31,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:31,165 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-07-17 13:14:31,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 13:14:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-07-17 13:14:31,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-07-17 13:14:31,167 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:31,168 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] [2020-07-17 13:14:31,168 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:14:31,168 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:31,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:31,169 INFO L82 PathProgramCache]: Analyzing trace with hash 698419476, now seen corresponding path program 1 times [2020-07-17 13:14:31,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:31,169 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1021371011] [2020-07-17 13:14:31,169 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,234 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:31,466 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:31,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1021371011] [2020-07-17 13:14:31,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:31,468 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 13:14:31,468 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648418327] [2020-07-17 13:14:31,468 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-07-17 13:14:31,469 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:31,469 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-07-17 13:14:31,469 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-07-17 13:14:31,470 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 13 states. [2020-07-17 13:14:31,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:31,545 INFO L93 Difference]: Finished difference Result 61 states and 65 transitions. [2020-07-17 13:14:31,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 13:14:31,547 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 29 [2020-07-17 13:14:31,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:31,548 INFO L225 Difference]: With dead ends: 61 [2020-07-17 13:14:31,548 INFO L226 Difference]: Without dead ends: 41 [2020-07-17 13:14:31,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2020-07-17 13:14:31,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-17 13:14:31,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-07-17 13:14:31,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-17 13:14:31,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 42 transitions. [2020-07-17 13:14:31,559 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 42 transitions. Word has length 29 [2020-07-17 13:14:31,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:31,560 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 42 transitions. [2020-07-17 13:14:31,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-07-17 13:14:31,560 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 42 transitions. [2020-07-17 13:14:31,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-07-17 13:14:31,562 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:31,562 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] [2020-07-17 13:14:31,562 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:14:31,562 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:31,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:31,563 INFO L82 PathProgramCache]: Analyzing trace with hash 735393428, now seen corresponding path program 1 times [2020-07-17 13:14:31,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:31,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885155662] [2020-07-17 13:14:31,564 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:31,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,770 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 18 [2020-07-17 13:14:31,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:31,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:14:31,916 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:14:31,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885155662] [2020-07-17 13:14:31,917 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:14:31,917 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 13:14:31,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [459186112] [2020-07-17 13:14:31,918 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 13:14:31,918 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:14:31,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 13:14:31,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-07-17 13:14:31,920 INFO L87 Difference]: Start difference. First operand 39 states and 42 transitions. Second operand 12 states. [2020-07-17 13:14:32,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:14:32,190 INFO L93 Difference]: Finished difference Result 53 states and 56 transitions. [2020-07-17 13:14:32,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 13:14:32,191 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 30 [2020-07-17 13:14:32,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:14:32,193 INFO L225 Difference]: With dead ends: 53 [2020-07-17 13:14:32,195 INFO L226 Difference]: Without dead ends: 46 [2020-07-17 13:14:32,196 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-07-17 13:14:32,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-07-17 13:14:32,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-07-17 13:14:32,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-07-17 13:14:32,206 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 47 transitions. [2020-07-17 13:14:32,207 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 47 transitions. Word has length 30 [2020-07-17 13:14:32,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:14:32,207 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 47 transitions. [2020-07-17 13:14:32,207 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 13:14:32,207 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 47 transitions. [2020-07-17 13:14:32,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 13:14:32,209 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:14:32,209 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1, 1] [2020-07-17 13:14:32,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:14:32,209 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:14:32,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:14:32,210 INFO L82 PathProgramCache]: Analyzing trace with hash 1128861445, now seen corresponding path program 1 times [2020-07-17 13:14:32,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:14:32,210 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871391087] [2020-07-17 13:14:32,211 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:14:32,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:14:32,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:14:32,358 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:14:32,358 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: has to be unsat by construction, we do check only for interpolant computation at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolants(InterpolatingTraceCheckCraig.java:239) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:108) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolantsCraigNested(Interpolator.java:146) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.Interpolator.generateInterpolants(Interpolator.java:102) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:291) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:191) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-07-17 13:14:32,363 INFO L168 Benchmark]: Toolchain (without parser) took 3725.14 ms. Allocated memory was 145.2 MB in the beginning and 245.9 MB in the end (delta: 100.7 MB). Free memory was 102.1 MB in the beginning and 143.6 MB in the end (delta: -41.4 MB). Peak memory consumption was 59.2 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:32,364 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.2 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-17 13:14:32,365 INFO L168 Benchmark]: CACSL2BoogieTranslator took 227.19 ms. Allocated memory is still 145.2 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:32,366 INFO L168 Benchmark]: Boogie Preprocessor took 113.59 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 92.4 MB in the beginning and 181.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:32,367 INFO L168 Benchmark]: RCFGBuilder took 406.24 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 167.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:32,368 INFO L168 Benchmark]: TraceAbstraction took 2971.81 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 167.4 MB in the beginning and 143.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. [2020-07-17 13:14:32,372 INFO L336 ainManager$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 145.2 MB. Free memory is still 120.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 227.19 ms. Allocated memory is still 145.2 MB. Free memory was 101.7 MB in the beginning and 92.4 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.59 ms. Allocated memory was 145.2 MB in the beginning and 202.9 MB in the end (delta: 57.7 MB). Free memory was 92.4 MB in the beginning and 181.7 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 406.24 ms. Allocated memory is still 202.9 MB. Free memory was 181.7 MB in the beginning and 167.4 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2971.81 ms. Allocated memory was 202.9 MB in the beginning and 245.9 MB in the end (delta: 43.0 MB). Free memory was 167.4 MB in the beginning and 143.6 MB in the end (delta: 23.8 MB). Peak memory consumption was 66.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: has to be unsat by construction, we do check only for interpolant computation de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: has to be unsat by construction, we do check only for interpolant computation: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.computeInterpolantsRecursive(InterpolatingTraceCheckCraig.java:396) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...