/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loops/nec20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 04:47:14,574 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 04:47:14,576 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 04:47:14,612 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 04:47:14,632 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 04:47:14,633 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 04:47:14,635 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 04:47:14,636 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 04:47:14,637 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 04:47:14,638 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 04:47:14,640 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 04:47:14,642 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 04:47:14,644 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 04:47:14,645 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 04:47:14,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 04:47:14,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 04:47:14,651 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 04:47:14,660 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 04:47:14,661 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 04:47:14,662 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 04:47:14,663 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 04:47:14,676 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 04:47:14,676 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 04:47:14,678 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 04:47:14,678 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 04:47:14,678 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 04:47:14,679 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 04:47:14,679 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 04:47:14,679 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 04:47:14,679 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 04:47:14,679 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 04:47:14,680 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 04:47:14,680 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 04:47:14,680 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 04:47:14,680 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 04:47:14,681 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 04:47:14,681 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 04:47:14,681 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 04:47:14,681 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 04:47:14,681 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 04:47:14,682 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 04:47:14,682 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 04:47:14,682 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 04:47:14,682 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 04:47:14,682 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 04:47:15,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 04:47:15,108 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 04:47:15,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 04:47:15,112 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 04:47:15,113 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 04:47:15,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec20.c [2021-02-24 04:47:15,193 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46972987e/59744061417e4e2d933f421d14ed747f/FLAG895baad86 [2021-02-24 04:47:15,794 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 04:47:15,794 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c [2021-02-24 04:47:15,800 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46972987e/59744061417e4e2d933f421d14ed747f/FLAG895baad86 [2021-02-24 04:47:16,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46972987e/59744061417e4e2d933f421d14ed747f [2021-02-24 04:47:16,197 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 04:47:16,211 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 04:47:16,213 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:16,213 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 04:47:16,217 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 04:47:16,218 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,219 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61a4bd36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16, skipping insertion in model container [2021-02-24 04:47:16,219 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 04:47:16,242 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 04:47:16,384 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c[356,369] [2021-02-24 04:47:16,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:16,412 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 04:47:16,427 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec20.c[356,369] [2021-02-24 04:47:16,434 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 04:47:16,451 INFO L208 MainTranslator]: Completed translation [2021-02-24 04:47:16,452 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16 WrapperNode [2021-02-24 04:47:16,452 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 04:47:16,454 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 04:47:16,454 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 04:47:16,454 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 04:47:16,468 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,469 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,477 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,477 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,484 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,490 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (1/1) ... [2021-02-24 04:47:16,492 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 04:47:16,493 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 04:47:16,494 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 04:47:16,494 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 04:47:16,495 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (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 [2021-02-24 04:47:16,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 04:47:16,595 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 04:47:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 04:47:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-24 04:47:16,596 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 04:47:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 04:47:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 04:47:16,596 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 04:47:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 04:47:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-24 04:47:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-24 04:47:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2021-02-24 04:47:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 04:47:16,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 04:47:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 04:47:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 04:47:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 04:47:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 04:47:16,598 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 04:47:17,114 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 04:47:17,115 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-24 04:47:17,116 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:17 BoogieIcfgContainer [2021-02-24 04:47:17,117 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 04:47:17,118 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 04:47:17,119 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 04:47:17,122 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 04:47:17,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 04:47:16" (1/3) ... [2021-02-24 04:47:17,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f8c5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:17, skipping insertion in model container [2021-02-24 04:47:17,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 04:47:16" (2/3) ... [2021-02-24 04:47:17,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9f8c5f0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 04:47:17, skipping insertion in model container [2021-02-24 04:47:17,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 04:47:17" (3/3) ... [2021-02-24 04:47:17,126 INFO L111 eAbstractionObserver]: Analyzing ICFG nec20.c [2021-02-24 04:47:17,133 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 04:47:17,139 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 04:47:17,161 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 04:47:17,187 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 04:47:17,187 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 04:47:17,187 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 04:47:17,187 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 04:47:17,187 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 04:47:17,188 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 04:47:17,188 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 04:47:17,188 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 04:47:17,206 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-24 04:47:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 04:47:17,217 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:17,218 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] [2021-02-24 04:47:17,218 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:17,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:17,225 INFO L82 PathProgramCache]: Analyzing trace with hash 2129882840, now seen corresponding path program 1 times [2021-02-24 04:47:17,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:17,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015222147] [2021-02-24 04:47:17,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:17,319 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:17,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:17,493 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:17,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:17,497 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:17,499 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:17,626 WARN L202 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2021-02-24 04:47:17,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:17,679 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:17,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:17,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:17,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015222147] [2021-02-24 04:47:17,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:17,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-24 04:47:17,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447931527] [2021-02-24 04:47:17,709 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-24 04:47:17,709 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:17,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-24 04:47:17,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:47:17,730 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 3 states. [2021-02-24 04:47:17,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:17,954 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2021-02-24 04:47:17,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-24 04:47:17,957 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2021-02-24 04:47:17,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:17,966 INFO L225 Difference]: With dead ends: 69 [2021-02-24 04:47:17,966 INFO L226 Difference]: Without dead ends: 37 [2021-02-24 04:47:17,970 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-24 04:47:17,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-24 04:47:18,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2021-02-24 04:47:18,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2021-02-24 04:47:18,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 38 transitions. [2021-02-24 04:47:18,020 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 38 transitions. Word has length 31 [2021-02-24 04:47:18,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:18,021 INFO L480 AbstractCegarLoop]: Abstraction has 37 states and 38 transitions. [2021-02-24 04:47:18,021 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-24 04:47:18,021 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 38 transitions. [2021-02-24 04:47:18,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 04:47:18,023 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:18,023 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] [2021-02-24 04:47:18,023 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 04:47:18,024 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:18,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:18,024 INFO L82 PathProgramCache]: Analyzing trace with hash 1900849632, now seen corresponding path program 1 times [2021-02-24 04:47:18,025 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:18,025 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807500457] [2021-02-24 04:47:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:18,028 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:18,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:18,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:18,133 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,133 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 04:47:18,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:18,168 WARN L141 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size [2021-02-24 04:47:18,169 WARN L147 QuantifierPusher]: treesize reduction 12, result has 7.7 percent of original size 1 [2021-02-24 04:47:18,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:18,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:18,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:18,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:18,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:18,251 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807500457] [2021-02-24 04:47:18,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:18,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:47:18,252 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321335172] [2021-02-24 04:47:18,253 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:47:18,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:18,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:47:18,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:47:18,255 INFO L87 Difference]: Start difference. First operand 37 states and 38 transitions. Second operand 5 states. [2021-02-24 04:47:18,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:18,564 INFO L93 Difference]: Finished difference Result 57 states and 59 transitions. [2021-02-24 04:47:18,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:47:18,565 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-02-24 04:47:18,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:18,568 INFO L225 Difference]: With dead ends: 57 [2021-02-24 04:47:18,568 INFO L226 Difference]: Without dead ends: 51 [2021-02-24 04:47:18,570 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:47:18,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-02-24 04:47:18,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 42. [2021-02-24 04:47:18,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-24 04:47:18,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-24 04:47:18,588 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 31 [2021-02-24 04:47:18,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:18,588 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-24 04:47:18,589 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:47:18,589 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-24 04:47:18,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2021-02-24 04:47:18,590 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:18,590 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] [2021-02-24 04:47:18,591 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 04:47:18,591 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:18,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:18,592 INFO L82 PathProgramCache]: Analyzing trace with hash 1192211008, now seen corresponding path program 1 times [2021-02-24 04:47:18,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:18,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786512917] [2021-02-24 04:47:18,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:18,595 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 04:47:18,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:18,722 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,723 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:18,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 04:47:18,746 WARN L141 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size [2021-02-24 04:47:18,750 WARN L147 QuantifierPusher]: treesize reduction 2, result has 96.0 percent of original size 48 [2021-02-24 04:47:18,822 WARN L141 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size [2021-02-24 04:47:18,825 WARN L147 QuantifierPusher]: treesize reduction 5, result has 88.4 percent of original size 38 [2021-02-24 04:47:18,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:18,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 04:47:18,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 04:47:18,921 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 04:47:18,922 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 04:47:18,925 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 04:47:18,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786512917] [2021-02-24 04:47:18,925 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 04:47:18,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 04:47:18,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633538591] [2021-02-24 04:47:18,926 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 04:47:18,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 04:47:18,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 04:47:18,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-24 04:47:18,928 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 5 states. [2021-02-24 04:47:19,190 WARN L202 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 41 [2021-02-24 04:47:19,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 04:47:19,310 INFO L93 Difference]: Finished difference Result 58 states and 60 transitions. [2021-02-24 04:47:19,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 04:47:19,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2021-02-24 04:47:19,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 04:47:19,313 INFO L225 Difference]: With dead ends: 58 [2021-02-24 04:47:19,313 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 04:47:19,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-02-24 04:47:19,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 04:47:19,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 38. [2021-02-24 04:47:19,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2021-02-24 04:47:19,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2021-02-24 04:47:19,327 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 31 [2021-02-24 04:47:19,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 04:47:19,327 INFO L480 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2021-02-24 04:47:19,327 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 04:47:19,328 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2021-02-24 04:47:19,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-02-24 04:47:19,329 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 04:47:19,329 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] [2021-02-24 04:47:19,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 04:47:19,330 INFO L428 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 04:47:19,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 04:47:19,330 INFO L82 PathProgramCache]: Analyzing trace with hash -2094669374, now seen corresponding path program 1 times [2021-02-24 04:47:19,330 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 04:47:19,331 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1806489439] [2021-02-24 04:47:19,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 04:47:20,055 WARN L202 SmtUtils]: Spent 707.00 ms on a formula simplification. DAG size of input: 79 DAG size of output: 79 [2021-02-24 04:47:20,064 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.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:183) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:162) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:145) 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:437) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:372) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:68) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:62) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateAllErrorsAtOnce(TraceAbstractionStarter.java:317) 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:131) 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) [2021-02-24 04:47:20,068 INFO L168 Benchmark]: Toolchain (without parser) took 3868.71 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 130.2 MB in the beginning and 139.3 MB in the end (delta: -9.1 MB). Peak memory consumption was 102.6 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:20,069 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 154.1 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 04:47:20,070 INFO L168 Benchmark]: CACSL2BoogieTranslator took 240.11 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 119.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:20,071 INFO L168 Benchmark]: Boogie Preprocessor took 38.89 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:20,071 INFO L168 Benchmark]: RCFGBuilder took 623.44 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 136.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:20,072 INFO L168 Benchmark]: TraceAbstraction took 2948.24 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 135.7 MB in the beginning and 139.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 107.0 MB. Max. memory is 8.0 GB. [2021-02-24 04:47:20,076 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 154.1 MB. Free memory is still 126.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 240.11 ms. Allocated memory is still 154.1 MB. Free memory was 129.0 MB in the beginning and 119.0 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.89 ms. Allocated memory is still 154.1 MB. Free memory was 119.0 MB in the beginning and 117.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 623.44 ms. Allocated memory is still 154.1 MB. Free memory was 117.5 MB in the beginning and 136.2 MB in the end (delta: -18.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2948.24 ms. Allocated memory was 154.1 MB in the beginning and 185.6 MB in the end (delta: 31.5 MB). Free memory was 135.7 MB in the beginning and 139.3 MB in the end (delta: -3.6 MB). Peak memory consumption was 107.0 MB. 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.loopaccelerator.AcceleratorWernerOverapprox.accelerateLoop(AcceleratorWernerOverapprox.java:55) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...