/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/array-industry-pattern/array_of_struct_ptr_flag_init.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:44:13,206 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:44:13,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:44:13,247 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2020-08-22 19:44:13,290 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:44:13,291 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:44:13,292 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:44:13,292 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:44:13,302 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:44:13,302 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:44:13,303 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:44:13,304 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:44:13,304 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:44:13,304 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:44:13,304 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:44:13,304 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:44:13,305 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:44:13,305 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:44:13,305 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:44:13,305 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:44:13,305 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:44:13,306 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:44:13,306 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:44:13,306 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:44:13,306 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:44:13,306 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:44:13,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:44:13,307 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:44:13,307 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:44:13,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:44:13,307 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:44:13,605 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:44:13,617 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:44:13,621 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:44:13,622 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:44:13,622 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:44:13,623 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-08-22 19:44:13,696 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0b14732/676440cc22d74b26b066708b12fdab23/FLAGd4e1f9f27 [2020-08-22 19:44:14,158 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:44:14,158 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/array-industry-pattern/array_of_struct_ptr_flag_init.i [2020-08-22 19:44:14,165 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0b14732/676440cc22d74b26b066708b12fdab23/FLAGd4e1f9f27 [2020-08-22 19:44:14,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac0b14732/676440cc22d74b26b066708b12fdab23 [2020-08-22 19:44:14,556 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:44:14,558 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:44:14,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:14,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:44:14,563 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:44:14,564 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,567 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@321fecde and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14, skipping insertion in model container [2020-08-22 19:44:14,567 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:44:14,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:44:14,777 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:14,784 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:44:14,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:44:14,815 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:44:14,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14 WrapperNode [2020-08-22 19:44:14,816 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:44:14,816 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:44:14,817 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:44:14,817 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:44:14,907 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... [2020-08-22 19:44:14,945 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:44:14,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:44:14,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:44:14,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:44:14,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:44:15,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:44:15,011 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:44:15,011 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 19:44:15,011 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-22 19:44:15,011 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:44:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:44:15,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:44:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 19:44:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-22 19:44:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:44:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:44:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:44:15,012 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 19:44:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:44:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:44:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:44:15,013 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:44:15,289 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:44:15,289 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 19:44:15,295 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:15 BoogieIcfgContainer [2020-08-22 19:44:15,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:44:15,297 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:44:15,297 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:44:15,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:44:15,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:44:14" (1/3) ... [2020-08-22 19:44:15,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253bffee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:15, skipping insertion in model container [2020-08-22 19:44:15,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:44:14" (2/3) ... [2020-08-22 19:44:15,304 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@253bffee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:44:15, skipping insertion in model container [2020-08-22 19:44:15,304 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:44:15" (3/3) ... [2020-08-22 19:44:15,306 INFO L109 eAbstractionObserver]: Analyzing ICFG array_of_struct_ptr_flag_init.i [2020-08-22 19:44:15,319 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:44:15,329 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:44:15,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:44:15,386 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:44:15,386 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:44:15,386 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:44:15,386 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:44:15,390 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:44:15,390 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:44:15,390 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:44:15,390 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:44:15,410 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states. [2020-08-22 19:44:15,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 19:44:15,421 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:15,422 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] [2020-08-22 19:44:15,424 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:15,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:15,435 INFO L82 PathProgramCache]: Analyzing trace with hash 1392671971, now seen corresponding path program 1 times [2020-08-22 19:44:15,443 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:15,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728479824] [2020-08-22 19:44:15,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:15,496 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:15,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:15,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:15,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:15,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 19:44:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:44:15,729 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728479824] [2020-08-22 19:44:15,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:15,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:44:15,733 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391124022] [2020-08-22 19:44:15,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:44:15,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:15,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:44:15,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:44:15,756 INFO L87 Difference]: Start difference. First operand 56 states. Second operand 4 states. [2020-08-22 19:44:15,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:15,957 INFO L93 Difference]: Finished difference Result 94 states and 111 transitions. [2020-08-22 19:44:15,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:44:15,960 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 29 [2020-08-22 19:44:15,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:15,972 INFO L225 Difference]: With dead ends: 94 [2020-08-22 19:44:15,972 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 19:44:15,976 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:44:15,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 19:44:16,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 49. [2020-08-22 19:44:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-08-22 19:44:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-08-22 19:44:16,025 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 29 [2020-08-22 19:44:16,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:16,025 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-08-22 19:44:16,026 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:44:16,026 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-08-22 19:44:16,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-22 19:44:16,028 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:16,028 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] [2020-08-22 19:44:16,028 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:44:16,029 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:16,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:16,029 INFO L82 PathProgramCache]: Analyzing trace with hash 31734745, now seen corresponding path program 1 times [2020-08-22 19:44:16,030 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:16,030 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1633170943] [2020-08-22 19:44:16,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:16,033 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:16,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:16,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 19:44:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:16,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:44:16,233 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1633170943] [2020-08-22 19:44:16,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:16,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:44:16,234 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559379384] [2020-08-22 19:44:16,235 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:44:16,235 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:16,235 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:44:16,236 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:44:16,236 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 7 states. [2020-08-22 19:44:16,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:16,554 INFO L93 Difference]: Finished difference Result 81 states and 89 transitions. [2020-08-22 19:44:16,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-08-22 19:44:16,555 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 29 [2020-08-22 19:44:16,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:16,557 INFO L225 Difference]: With dead ends: 81 [2020-08-22 19:44:16,557 INFO L226 Difference]: Without dead ends: 54 [2020-08-22 19:44:16,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-08-22 19:44:16,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-08-22 19:44:16,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 50. [2020-08-22 19:44:16,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-08-22 19:44:16,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 54 transitions. [2020-08-22 19:44:16,573 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 54 transitions. Word has length 29 [2020-08-22 19:44:16,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:16,573 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 54 transitions. [2020-08-22 19:44:16,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:44:16,574 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 54 transitions. [2020-08-22 19:44:16,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-08-22 19:44:16,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:16,575 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:44:16,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:44:16,576 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:16,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:16,576 INFO L82 PathProgramCache]: Analyzing trace with hash -579567659, now seen corresponding path program 1 times [2020-08-22 19:44:16,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:16,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1775988355] [2020-08-22 19:44:16,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:16,601 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:16,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:16,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:16,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:16,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 19:44:16,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:16,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:44:16,819 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1775988355] [2020-08-22 19:44:16,819 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:16,819 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-08-22 19:44:16,819 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656203810] [2020-08-22 19:44:16,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-08-22 19:44:16,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:16,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-08-22 19:44:16,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:44:16,821 INFO L87 Difference]: Start difference. First operand 50 states and 54 transitions. Second operand 9 states. [2020-08-22 19:44:17,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:17,105 INFO L93 Difference]: Finished difference Result 87 states and 95 transitions. [2020-08-22 19:44:17,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-22 19:44:17,105 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-08-22 19:44:17,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:17,107 INFO L225 Difference]: With dead ends: 87 [2020-08-22 19:44:17,107 INFO L226 Difference]: Without dead ends: 60 [2020-08-22 19:44:17,108 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2020-08-22 19:44:17,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-08-22 19:44:17,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 56. [2020-08-22 19:44:17,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-08-22 19:44:17,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2020-08-22 19:44:17,121 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 35 [2020-08-22 19:44:17,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:17,121 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2020-08-22 19:44:17,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-08-22 19:44:17,121 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2020-08-22 19:44:17,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:44:17,123 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:17,123 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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] [2020-08-22 19:44:17,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:44:17,124 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:17,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:17,124 INFO L82 PathProgramCache]: Analyzing trace with hash 556324561, now seen corresponding path program 2 times [2020-08-22 19:44:17,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:17,125 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858651345] [2020-08-22 19:44:17,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:17,136 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:44:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:17,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:44:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:17,237 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-08-22 19:44:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:44:17,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:44:17,252 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858651345] [2020-08-22 19:44:17,252 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:44:17,252 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:44:17,252 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314149715] [2020-08-22 19:44:17,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:44:17,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:44:17,253 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:44:17,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:44:17,254 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand 5 states. [2020-08-22 19:44:17,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:44:17,430 INFO L93 Difference]: Finished difference Result 86 states and 95 transitions. [2020-08-22 19:44:17,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:44:17,431 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-08-22 19:44:17,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:44:17,433 INFO L225 Difference]: With dead ends: 86 [2020-08-22 19:44:17,433 INFO L226 Difference]: Without dead ends: 71 [2020-08-22 19:44:17,434 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:44:17,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-08-22 19:44:17,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 57. [2020-08-22 19:44:17,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-08-22 19:44:17,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-08-22 19:44:17,450 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 41 [2020-08-22 19:44:17,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:44:17,450 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-08-22 19:44:17,450 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:44:17,450 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-08-22 19:44:17,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-08-22 19:44:17,452 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:44:17,452 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1] [2020-08-22 19:44:17,452 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:44:17,452 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:44:17,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:44:17,453 INFO L82 PathProgramCache]: Analyzing trace with hash 272366111, now seen corresponding path program 1 times [2020-08-22 19:44:17,453 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:44:17,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [236023118] [2020-08-22 19:44:17,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:44:17,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:44:17,461 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) 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$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 19:44:17,466 INFO L168 Benchmark]: Toolchain (without parser) took 2907.60 ms. Allocated memory was 138.9 MB in the beginning and 248.0 MB in the end (delta: 109.1 MB). Free memory was 102.0 MB in the beginning and 216.4 MB in the end (delta: -114.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:44:17,467 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:44:17,468 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.03 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:17,469 INFO L168 Benchmark]: Boogie Preprocessor took 128.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 179.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:17,470 INFO L168 Benchmark]: RCFGBuilder took 350.78 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 161.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:44:17,471 INFO L168 Benchmark]: TraceAbstraction took 2166.63 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 161.0 MB in the beginning and 216.4 MB in the end (delta: -55.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:44:17,475 INFO L336 ainManager$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 138.9 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 257.03 ms. Allocated memory is still 138.9 MB. Free memory was 101.7 MB in the beginning and 91.4 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 128.33 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 91.4 MB in the beginning and 179.7 MB in the end (delta: -88.2 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 350.78 ms. Allocated memory is still 202.4 MB. Free memory was 179.7 MB in the beginning and 161.6 MB in the end (delta: 18.0 MB). Peak memory consumption was 18.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2166.63 ms. Allocated memory was 202.4 MB in the beginning and 248.0 MB in the end (delta: 45.6 MB). Free memory was 161.0 MB in the beginning and 216.4 MB in the end (delta: -55.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...