/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/AutomizerCInline.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-6598664 [2019-11-23 21:57:43,767 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-23 21:57:43,771 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-23 21:57:43,788 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-23 21:57:43,789 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-23 21:57:43,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-23 21:57:43,791 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-23 21:57:43,793 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-23 21:57:43,795 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-23 21:57:43,796 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-23 21:57:43,797 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-23 21:57:43,798 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-23 21:57:43,798 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-23 21:57:43,799 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-23 21:57:43,800 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-23 21:57:43,801 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-23 21:57:43,802 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-23 21:57:43,803 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-23 21:57:43,805 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-23 21:57:43,807 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-23 21:57:43,809 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-23 21:57:43,810 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-23 21:57:43,811 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-23 21:57:43,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-23 21:57:43,814 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2019-11-23 21:57:43,822 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-23 21:57:43,823 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-23 21:57:43,824 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-23 21:57:43,825 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-11-23 21:57:43,839 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-23 21:57:43,839 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-23 21:57:43,840 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-23 21:57:43,840 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-23 21:57:43,841 INFO L138 SettingsManager]: * Use SBE=true [2019-11-23 21:57:43,841 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-23 21:57:43,841 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-23 21:57:43,841 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-23 21:57:43,842 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-23 21:57:43,842 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-23 21:57:43,842 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-11-23 21:57:43,842 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-23 21:57:43,842 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-11-23 21:57:43,843 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-23 21:57:43,843 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-23 21:57:43,843 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-23 21:57:43,843 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-23 21:57:43,843 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-11-23 21:57:43,844 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-23 21:57:43,844 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-23 21:57:43,844 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-23 21:57:43,844 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-23 21:57:43,844 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-23 21:57:43,845 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-23 21:57:43,845 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-23 21:57:43,845 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-11-23 21:57:43,845 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-23 21:57:43,846 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-23 21:57:43,846 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-11-23 21:57:43,846 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-23 21:57:44,119 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-23 21:57:44,137 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-23 21:57:44,142 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-23 21:57:44,144 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-23 21:57:44,144 INFO L275 PluginConnector]: CDTParser initialized [2019-11-23 21:57:44,146 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-11-23 21:57:44,223 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/028cb60d1/86b5d24dec364fe28f460b03ee159ee2/FLAGb088dacd1 [2019-11-23 21:57:44,772 INFO L306 CDTParser]: Found 1 translation units. [2019-11-23 21:57:44,773 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_circular_traversal-1.i [2019-11-23 21:57:44,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/028cb60d1/86b5d24dec364fe28f460b03ee159ee2/FLAGb088dacd1 [2019-11-23 21:57:45,058 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/028cb60d1/86b5d24dec364fe28f460b03ee159ee2 [2019-11-23 21:57:45,067 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-23 21:57:45,069 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-23 21:57:45,070 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-23 21:57:45,070 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-23 21:57:45,074 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-23 21:57:45,075 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,078 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9aeca0d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45, skipping insertion in model container [2019-11-23 21:57:45,078 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,087 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-23 21:57:45,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-23 21:57:45,544 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:57:45,554 INFO L203 MainTranslator]: Completed pre-run [2019-11-23 21:57:45,596 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-23 21:57:45,660 INFO L208 MainTranslator]: Completed translation [2019-11-23 21:57:45,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45 WrapperNode [2019-11-23 21:57:45,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-23 21:57:45,662 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-23 21:57:45,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-23 21:57:45,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-23 21:57:45,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,694 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-23 21:57:45,725 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-23 21:57:45,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-23 21:57:45,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-23 21:57:45,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,737 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,737 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,744 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,749 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,751 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (1/1) ... [2019-11-23 21:57:45,754 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-23 21:57:45,755 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-23 21:57:45,755 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-23 21:57:45,755 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-23 21:57:45,756 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (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 [2019-11-23 21:57:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-11-23 21:57:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-11-23 21:57:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-23 21:57:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-23 21:57:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-23 21:57:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-23 21:57:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-23 21:57:45,830 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-23 21:57:46,207 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-23 21:57:46,208 INFO L284 CfgBuilder]: Removed 13 assume(true) statements. [2019-11-23 21:57:46,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:57:46 BoogieIcfgContainer [2019-11-23 21:57:46,210 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-23 21:57:46,211 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-23 21:57:46,211 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-23 21:57:46,216 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-23 21:57:46,217 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:57:45" (1/3) ... [2019-11-23 21:57:46,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39faedb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:57:46, skipping insertion in model container [2019-11-23 21:57:46,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:57:45" (2/3) ... [2019-11-23 21:57:46,218 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39faedb3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:57:46, skipping insertion in model container [2019-11-23 21:57:46,218 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:57:46" (3/3) ... [2019-11-23 21:57:46,220 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_circular_traversal-1.i [2019-11-23 21:57:46,228 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-23 21:57:46,236 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-11-23 21:57:46,245 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-11-23 21:57:46,266 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-23 21:57:46,266 INFO L374 AbstractCegarLoop]: Hoare is true [2019-11-23 21:57:46,266 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-23 21:57:46,267 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-23 21:57:46,267 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-23 21:57:46,267 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-23 21:57:46,267 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-23 21:57:46,268 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-23 21:57:46,281 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2019-11-23 21:57:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-23 21:57:46,287 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:57:46,288 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:57:46,289 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:57:46,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:57:46,293 INFO L82 PathProgramCache]: Analyzing trace with hash 742134712, now seen corresponding path program 1 times [2019-11-23 21:57:46,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:57:46,301 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933658160] [2019-11-23 21:57:46,302 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:57:46,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:57:46,476 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:57:46,477 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933658160] [2019-11-23 21:57:46,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-23 21:57:46,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-23 21:57:46,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381050282] [2019-11-23 21:57:46,485 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-11-23 21:57:46,486 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:57:46,499 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-23 21:57:46,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 21:57:46,502 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 3 states. [2019-11-23 21:57:46,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:57:46,539 INFO L93 Difference]: Finished difference Result 43 states and 60 transitions. [2019-11-23 21:57:46,540 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-23 21:57:46,541 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2019-11-23 21:57:46,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:57:46,551 INFO L225 Difference]: With dead ends: 43 [2019-11-23 21:57:46,551 INFO L226 Difference]: Without dead ends: 21 [2019-11-23 21:57:46,554 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-23 21:57:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2019-11-23 21:57:46,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 19. [2019-11-23 21:57:46,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2019-11-23 21:57:46,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 22 transitions. [2019-11-23 21:57:46,586 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 22 transitions. Word has length 10 [2019-11-23 21:57:46,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:57:46,586 INFO L462 AbstractCegarLoop]: Abstraction has 19 states and 22 transitions. [2019-11-23 21:57:46,586 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-11-23 21:57:46,586 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 22 transitions. [2019-11-23 21:57:46,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-23 21:57:46,587 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:57:46,587 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:57:46,588 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:57:46,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:57:46,588 INFO L82 PathProgramCache]: Analyzing trace with hash -60440637, now seen corresponding path program 1 times [2019-11-23 21:57:46,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:57:46,589 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462801848] [2019-11-23 21:57:46,589 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:57:46,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:57:46,675 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:57:46,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462801848] [2019-11-23 21:57:46,675 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768873826] [2019-11-23 21:57:46,677 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:46,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:57:46,757 INFO L255 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2019-11-23 21:57:46,763 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 21:57:46,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:57:46,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 21:57:46,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 5 [2019-11-23 21:57:46,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176302374] [2019-11-23 21:57:46,799 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-11-23 21:57:46,799 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:57:46,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-11-23 21:57:46,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 21:57:46,800 INFO L87 Difference]: Start difference. First operand 19 states and 22 transitions. Second operand 5 states. [2019-11-23 21:57:46,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:57:46,848 INFO L93 Difference]: Finished difference Result 35 states and 41 transitions. [2019-11-23 21:57:46,850 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-23 21:57:46,850 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2019-11-23 21:57:46,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:57:46,851 INFO L225 Difference]: With dead ends: 35 [2019-11-23 21:57:46,851 INFO L226 Difference]: Without dead ends: 24 [2019-11-23 21:57:46,853 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2019-11-23 21:57:46,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-23 21:57:46,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2019-11-23 21:57:46,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-23 21:57:46,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 25 transitions. [2019-11-23 21:57:46,862 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 25 transitions. Word has length 13 [2019-11-23 21:57:46,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:57:46,862 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 25 transitions. [2019-11-23 21:57:46,863 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-11-23 21:57:46,863 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 25 transitions. [2019-11-23 21:57:46,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-23 21:57:46,863 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:57:46,865 INFO L410 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:57:47,071 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:47,072 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:57:47,073 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:57:47,073 INFO L82 PathProgramCache]: Analyzing trace with hash 500274136, now seen corresponding path program 2 times [2019-11-23 21:57:47,073 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:57:47,074 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1636816750] [2019-11-23 21:57:47,074 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:57:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:57:47,189 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:57:47,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1636816750] [2019-11-23 21:57:47,190 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693787897] [2019-11-23 21:57:47,190 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:47,301 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-11-23 21:57:47,302 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 21:57:47,304 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 6 conjunts are in the unsatisfiable core [2019-11-23 21:57:47,308 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 21:57:47,327 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:57:47,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 21:57:47,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2019-11-23 21:57:47,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2095124366] [2019-11-23 21:57:47,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-23 21:57:47,330 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:57:47,331 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-23 21:57:47,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 21:57:47,331 INFO L87 Difference]: Start difference. First operand 22 states and 25 transitions. Second operand 6 states. [2019-11-23 21:57:47,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:57:47,380 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2019-11-23 21:57:47,381 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-23 21:57:47,382 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 16 [2019-11-23 21:57:47,382 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:57:47,382 INFO L225 Difference]: With dead ends: 38 [2019-11-23 21:57:47,383 INFO L226 Difference]: Without dead ends: 27 [2019-11-23 21:57:47,383 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2019-11-23 21:57:47,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-11-23 21:57:47,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 25. [2019-11-23 21:57:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-23 21:57:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2019-11-23 21:57:47,391 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 16 [2019-11-23 21:57:47,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:57:47,393 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2019-11-23 21:57:47,393 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-23 21:57:47,394 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2019-11-23 21:57:47,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-11-23 21:57:47,394 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:57:47,395 INFO L410 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:57:47,601 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:47,602 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:57:47,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:57:47,602 INFO L82 PathProgramCache]: Analyzing trace with hash 1626262435, now seen corresponding path program 3 times [2019-11-23 21:57:47,603 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:57:47,603 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531941282] [2019-11-23 21:57:47,603 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:57:47,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:57:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-23 21:57:47,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [531941282] [2019-11-23 21:57:47,769 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2129601898] [2019-11-23 21:57:47,770 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:47,869 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2019-11-23 21:57:47,869 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-11-23 21:57:47,871 INFO L255 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 35 conjunts are in the unsatisfiable core [2019-11-23 21:57:47,875 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 21:57:47,973 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-23 21:57:47,974 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:47,983 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:47,984 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 21:57:47,984 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:19 [2019-11-23 21:57:48,027 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-23 21:57:48,028 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:48,034 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:48,035 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 21:57:48,035 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:29, output treesize:14 [2019-11-23 21:57:48,091 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2019-11-23 21:57:48,092 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:48,097 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:48,097 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 21:57:48,097 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:7 [2019-11-23 21:57:48,117 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-23 21:57:48,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-11-23 21:57:48,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 8] total 12 [2019-11-23 21:57:48,118 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438119532] [2019-11-23 21:57:48,119 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2019-11-23 21:57:48,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-23 21:57:48,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2019-11-23 21:57:48,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2019-11-23 21:57:48,121 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 12 states. [2019-11-23 21:57:48,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-23 21:57:48,575 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2019-11-23 21:57:48,576 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2019-11-23 21:57:48,576 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 19 [2019-11-23 21:57:48,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-23 21:57:48,577 INFO L225 Difference]: With dead ends: 41 [2019-11-23 21:57:48,577 INFO L226 Difference]: Without dead ends: 30 [2019-11-23 21:57:48,578 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2019-11-23 21:57:48,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2019-11-23 21:57:48,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2019-11-23 21:57:48,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-11-23 21:57:48,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-11-23 21:57:48,585 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 19 [2019-11-23 21:57:48,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-23 21:57:48,585 INFO L462 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-11-23 21:57:48,585 INFO L463 AbstractCegarLoop]: Interpolant automaton has 12 states. [2019-11-23 21:57:48,585 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-11-23 21:57:48,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-11-23 21:57:48,586 INFO L402 BasicCegarLoop]: Found error trace [2019-11-23 21:57:48,586 INFO L410 BasicCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-23 21:57:48,790 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:48,791 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-11-23 21:57:48,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-23 21:57:48,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1335739081, now seen corresponding path program 1 times [2019-11-23 21:57:48,792 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-23 21:57:48,792 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226833470] [2019-11-23 21:57:48,792 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-23 21:57:48,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:57:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-11-23 21:57:49,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226833470] [2019-11-23 21:57:49,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [66794544] [2019-11-23 21:57:49,549 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-23 21:57:49,626 INFO L255 TraceCheckSpWp]: Trace formula consists of 173 conjuncts, 57 conjunts are in the unsatisfiable core [2019-11-23 21:57:49,635 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-23 21:57:49,692 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2019-11-23 21:57:49,693 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:49,702 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:49,703 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 21:57:49,703 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:26, output treesize:22 [2019-11-23 21:57:49,776 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.base_12|, |v_#memory_$Pointer$.offset_12|], 2=[|v_#memory_int_19|, |v_#memory_int_18|]} [2019-11-23 21:57:49,785 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 21:57:49,786 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-23 21:57:49,786 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:49,811 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:49,823 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 21:57:49,825 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 7 [2019-11-23 21:57:49,825 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:49,854 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:49,863 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-11-23 21:57:49,864 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:49,879 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:49,894 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 21:57:49,905 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:49,905 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 36 [2019-11-23 21:57:49,906 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:49,936 INFO L567 ElimStorePlain]: treesize reduction 16, result has 71.4 percent of original size [2019-11-23 21:57:49,936 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 4 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-11-23 21:57:49,937 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 5 variables, input treesize:89, output treesize:37 [2019-11-23 21:57:50,012 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:50,013 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 38 [2019-11-23 21:57:50,014 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 21:57:50,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 21:57:50,018 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 21:57:50,079 INFO L567 ElimStorePlain]: treesize reduction 12, result has 85.7 percent of original size [2019-11-23 21:57:50,097 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:50,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 34 [2019-11-23 21:57:50,099 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:50,157 INFO L567 ElimStorePlain]: treesize reduction 16, result has 81.0 percent of original size [2019-11-23 21:57:50,168 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:50,168 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 29 [2019-11-23 21:57:50,169 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-11-23 21:57:50,205 INFO L567 ElimStorePlain]: treesize reduction 12, result has 81.5 percent of original size [2019-11-23 21:57:50,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 21:57:50,207 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 3 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-11-23 21:57:50,208 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:69, output treesize:53 [2019-11-23 21:57:50,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 21:57:50,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 21:57:50,370 INFO L392 ElimStorePlain]: Different costs {2=[|#memory_$Pointer$.base|, |#memory_$Pointer$.offset|], 5=[|v_#memory_$Pointer$.base_14|, |v_#memory_$Pointer$.offset_14|, |v_#memory_int_21|]} [2019-11-23 21:57:50,376 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 21:57:50,403 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:50,406 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-11-23 21:57:50,430 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:50,440 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-11-23 21:57:50,440 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 33 [2019-11-23 21:57:50,441 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-11-23 21:57:50,445 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-11-23 21:57:50,446 INFO L172 IndexEqualityManager]: detected equality via solver [2019-11-23 21:57:50,446 INFO L392 ElimStorePlain]: Different costs {0=[v_arrayElimCell_9], 1=[v_arrayElimCell_10]} [2019-11-23 21:57:50,649 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-11-23 21:57:50,650 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: This case should habe been handled by DER at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:192) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.(DerPreprocessor.java:95) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.applyComplexEliminationRules(ElimStorePlain.java:291) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:253) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:256) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.eliminateOne(ElimStorePlain.java:553) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:466) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.ElimStorePlain.startRecursiveElimination(ElimStorePlain.java:216) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:306) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:102) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:246) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:440) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.predicates.IterativePredicateTransformer.computeStrongestPostconditionSequence(IterativePredicateTransformer.java:201) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:291) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:177) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:108) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSpWp.construct(IpTcStrategyModuleSpWp.java:1) 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.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.tryExecuteInterpolantGenerator(AutomatonFreeRefinementEngine.java:297) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.generateProof(AutomatonFreeRefinementEngine.java:190) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:180) 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:463) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:333) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:171) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:123) 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:316) 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) [2019-11-23 21:57:50,655 INFO L168 Benchmark]: Toolchain (without parser) took 5586.64 ms. Allocated memory was 138.4 MB in the beginning and 248.0 MB in the end (delta: 109.6 MB). Free memory was 101.3 MB in the beginning and 150.9 MB in the end (delta: -49.6 MB). Peak memory consumption was 59.9 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:50,656 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-11-23 21:57:50,657 INFO L168 Benchmark]: CACSL2BoogieTranslator took 591.07 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 167.9 MB in the end (delta: -66.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:50,658 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.63 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 166.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:50,658 INFO L168 Benchmark]: Boogie Preprocessor took 29.26 ms. Allocated memory is still 202.4 MB. Free memory was 166.0 MB in the beginning and 164.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:50,659 INFO L168 Benchmark]: RCFGBuilder took 455.10 ms. Allocated memory is still 202.4 MB. Free memory was 164.1 MB in the beginning and 144.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:50,660 INFO L168 Benchmark]: TraceAbstraction took 4442.55 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 144.5 MB in the beginning and 150.9 MB in the end (delta: -6.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. [2019-11-23 21:57:50,668 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 138.4 MB. Free memory is still 121.2 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 591.07 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 101.3 MB in the beginning and 167.9 MB in the end (delta: -66.6 MB). Peak memory consumption was 25.9 MB. Max. memory is 7.1 GB. * Boogie Procedure Inliner took 63.63 ms. Allocated memory is still 202.4 MB. Free memory was 167.9 MB in the beginning and 166.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 29.26 ms. Allocated memory is still 202.4 MB. Free memory was 166.0 MB in the beginning and 164.1 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 455.10 ms. Allocated memory is still 202.4 MB. Free memory was 164.1 MB in the beginning and 144.5 MB in the end (delta: 19.6 MB). Peak memory consumption was 19.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4442.55 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 144.5 MB in the beginning and 150.9 MB in the end (delta: -6.4 MB). Peak memory consumption was 39.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: This case should habe been handled by DER de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: This case should habe been handled by DER: de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.DerPreprocessor.classify(DerPreprocessor.java:212) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...