/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/recHanoi01.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:26:15,634 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:26:15,639 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:26:15,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:26:15,691 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:26:15,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:26:15,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:26:15,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:26:15,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:26:15,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:26:15,702 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:26:15,703 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:26:15,704 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:26:15,705 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:26:15,706 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:26:15,708 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:26:15,709 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:26:15,710 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:26:15,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:26:15,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:26:15,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:26:15,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:26:15,736 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:26:15,737 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:26:15,740 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-23 20:26:15,751 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:26:15,752 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:26:15,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:26:15,754 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:26:15,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:26:15,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:26:15,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:26:15,773 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:26:15,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:26:15,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:26:15,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:26:15,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:26:15,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:26:15,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:26:15,776 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:26:15,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:26:15,776 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:26:15,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:26:15,777 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:26:15,777 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:26:15,777 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:26:15,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:26:15,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:26:15,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:26:15,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:26:15,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:26:15,779 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:26:16,203 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:26:16,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:26:16,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:26:16,262 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:26:16,263 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:26:16,264 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi01.c [2020-10-23 20:26:16,353 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ded98416/a6431ace06904ac6a7da24ad8e621445/FLAGf80e225ce [2020-10-23 20:26:17,071 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:26:17,071 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/recHanoi01.c [2020-10-23 20:26:17,079 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ded98416/a6431ace06904ac6a7da24ad8e621445/FLAGf80e225ce [2020-10-23 20:26:17,421 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4ded98416/a6431ace06904ac6a7da24ad8e621445 [2020-10-23 20:26:17,425 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:26:17,432 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:26:17,436 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:17,436 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:26:17,440 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:26:17,441 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,445 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66f35e36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17, skipping insertion in model container [2020-10-23 20:26:17,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,454 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:26:17,470 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:26:17,642 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:17,653 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:26:17,672 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:26:17,686 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:26:17,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17 WrapperNode [2020-10-23 20:26:17,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:26:17,688 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:26:17,688 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:26:17,688 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:26:17,701 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,709 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,709 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,717 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,719 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (1/1) ... [2020-10-23 20:26:17,721 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:26:17,722 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:26:17,722 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:26:17,723 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:26:17,724 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (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 [2020-10-23 20:26:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:26:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:26:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:26:17,800 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-10-23 20:26:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure applyHanoi [2020-10-23 20:26:17,801 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:26:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:26:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:26:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:26:17,801 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:26:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 20:26:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-10-23 20:26:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure applyHanoi [2020-10-23 20:26:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:26:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:26:17,802 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:26:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:26:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:26:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:26:17,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:26:18,105 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:26:18,106 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:26:18,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:18 BoogieIcfgContainer [2020-10-23 20:26:18,108 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:26:18,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:26:18,111 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:26:18,115 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:26:18,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:26:17" (1/3) ... [2020-10-23 20:26:18,116 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316fcae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:18, skipping insertion in model container [2020-10-23 20:26:18,116 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:26:17" (2/3) ... [2020-10-23 20:26:18,117 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316fcae2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:26:18, skipping insertion in model container [2020-10-23 20:26:18,117 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:26:18" (3/3) ... [2020-10-23 20:26:18,119 INFO L111 eAbstractionObserver]: Analyzing ICFG recHanoi01.c [2020-10-23 20:26:18,133 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:26:18,139 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:26:18,213 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:26:18,260 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:26:18,260 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:26:18,260 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:26:18,260 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:26:18,260 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:26:18,261 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:26:18,261 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:26:18,261 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:26:18,282 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states. [2020-10-23 20:26:18,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-23 20:26:18,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:18,293 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, 1, 1, 1] [2020-10-23 20:26:18,293 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:18,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:18,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1597391385, now seen corresponding path program 1 times [2020-10-23 20:26:18,310 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:18,310 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522828594] [2020-10-23 20:26:18,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:18,393 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:18,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:18,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:18,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:26:18,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:18,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:26:18,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522828594] [2020-10-23 20:26:18,833 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:18,833 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 20:26:18,834 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38144689] [2020-10-23 20:26:18,839 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 20:26:18,840 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:18,855 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 20:26:18,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:26:18,859 INFO L87 Difference]: Start difference. First operand 57 states. Second operand 7 states. [2020-10-23 20:26:19,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:19,274 INFO L93 Difference]: Finished difference Result 83 states and 94 transitions. [2020-10-23 20:26:19,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 20:26:19,276 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-23 20:26:19,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:19,294 INFO L225 Difference]: With dead ends: 83 [2020-10-23 20:26:19,294 INFO L226 Difference]: Without dead ends: 50 [2020-10-23 20:26:19,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-23 20:26:19,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-23 20:26:19,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-23 20:26:19,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-23 20:26:19,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2020-10-23 20:26:19,390 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 38 [2020-10-23 20:26:19,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:19,392 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2020-10-23 20:26:19,392 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 20:26:19,392 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2020-10-23 20:26:19,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-23 20:26:19,397 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:19,398 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1] [2020-10-23 20:26:19,399 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:26:19,399 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:19,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:19,401 INFO L82 PathProgramCache]: Analyzing trace with hash -880596904, now seen corresponding path program 1 times [2020-10-23 20:26:19,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:19,402 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1836766050] [2020-10-23 20:26:19,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:19,416 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:19,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:19,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 20:26:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:26:19,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 20:26:19,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:19,707 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-23 20:26:19,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1836766050] [2020-10-23 20:26:19,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:19,708 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:26:19,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212677811] [2020-10-23 20:26:19,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:26:19,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:19,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:26:19,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:26:19,711 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 11 states. [2020-10-23 20:26:20,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:20,533 INFO L93 Difference]: Finished difference Result 104 states and 121 transitions. [2020-10-23 20:26:20,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-23 20:26:20,534 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 57 [2020-10-23 20:26:20,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:20,538 INFO L225 Difference]: With dead ends: 104 [2020-10-23 20:26:20,538 INFO L226 Difference]: Without dead ends: 95 [2020-10-23 20:26:20,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=98, Invalid=408, Unknown=0, NotChecked=0, Total=506 [2020-10-23 20:26:20,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-23 20:26:20,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 84. [2020-10-23 20:26:20,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-23 20:26:20,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 101 transitions. [2020-10-23 20:26:20,570 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 101 transitions. Word has length 57 [2020-10-23 20:26:20,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:20,571 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 101 transitions. [2020-10-23 20:26:20,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:26:20,571 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 101 transitions. [2020-10-23 20:26:20,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-23 20:26:20,574 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:20,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:20,575 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:26:20,575 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:20,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:20,576 INFO L82 PathProgramCache]: Analyzing trace with hash -650401246, now seen corresponding path program 1 times [2020-10-23 20:26:20,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:20,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1511207834] [2020-10-23 20:26:20,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:20,580 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:26:20,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:26:20,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-23 20:26:20,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-23 20:26:20,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-23 20:26:20,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-23 20:26:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-23 20:26:20,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:26:20,811 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-23 20:26:20,812 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1511207834] [2020-10-23 20:26:20,812 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:26:20,813 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-23 20:26:20,813 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484957700] [2020-10-23 20:26:20,813 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 20:26:20,814 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:26:20,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 20:26:20,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-23 20:26:20,815 INFO L87 Difference]: Start difference. First operand 84 states and 101 transitions. Second operand 11 states. [2020-10-23 20:26:21,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:26:21,427 INFO L93 Difference]: Finished difference Result 116 states and 146 transitions. [2020-10-23 20:26:21,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:26:21,428 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 65 [2020-10-23 20:26:21,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:26:21,434 INFO L225 Difference]: With dead ends: 116 [2020-10-23 20:26:21,434 INFO L226 Difference]: Without dead ends: 95 [2020-10-23 20:26:21,440 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2020-10-23 20:26:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-23 20:26:21,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 90. [2020-10-23 20:26:21,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-23 20:26:21,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 117 transitions. [2020-10-23 20:26:21,490 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 117 transitions. Word has length 65 [2020-10-23 20:26:21,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:26:21,493 INFO L481 AbstractCegarLoop]: Abstraction has 90 states and 117 transitions. [2020-10-23 20:26:21,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 20:26:21,494 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 117 transitions. [2020-10-23 20:26:21,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-23 20:26:21,498 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:26:21,499 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 20:26:21,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:26:21,505 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:26:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:26:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 2146125247, now seen corresponding path program 2 times [2020-10-23 20:26:21,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:26:21,507 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1913127394] [2020-10-23 20:26:21,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:26:21,512 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.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:266) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:227) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:147) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:100) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:241) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:165) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:84) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:74) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:511) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:438) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) 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:341) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:182) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:134) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:124) 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:320) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:63) [2020-10-23 20:26:21,523 INFO L168 Benchmark]: Toolchain (without parser) took 4092.05 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.6 MB in the beginning and 137.4 MB in the end (delta: -9.7 MB). Peak memory consumption was 21.0 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:21,525 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:26:21,527 INFO L168 Benchmark]: CACSL2BoogieTranslator took 251.40 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:21,530 INFO L168 Benchmark]: Boogie Preprocessor took 33.70 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:21,530 INFO L168 Benchmark]: RCFGBuilder took 385.72 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 100.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:26:21,532 INFO L168 Benchmark]: TraceAbstraction took 3406.90 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.1 MB in the beginning and 137.4 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:26:21,540 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 151.0 MB. Free memory is still 125.3 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 251.40 ms. Allocated memory is still 151.0 MB. Free memory was 127.0 MB in the beginning and 117.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.70 ms. Allocated memory is still 151.0 MB. Free memory was 117.7 MB in the beginning and 116.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 385.72 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 100.5 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3406.90 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.1 MB in the beginning and 137.4 MB in the end (delta: -37.3 MB). There was no memory consumed. Max. memory is 8.0 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.looppreprocessor.LoopPreprocessorFastUPR.preProcessLoop(LoopPreprocessorFastUPR.java:119) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...