/usr/bin/java -ea -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 03:42:05,529 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 03:42:05,530 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 03:42:05,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-04-28 03:42:05,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 03:42:05,590 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 03:42:05,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 03:42:05,591 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 03:42:05,592 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 03:42:05,592 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 03:42:05,593 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 03:42:05,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 03:42:05,596 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 03:42:05,599 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 03:42:05,603 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 03:42:05,605 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 03:42:05,607 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 03:42:05,610 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-28 03:42:05,615 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 03:42:05,616 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 03:42:05,622 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 03:42:05,623 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 03:42:05,633 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 03:42:05,633 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 03:42:05,635 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 03:42:05,635 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 03:42:05,635 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 03:42:05,635 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 03:42:05,635 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 03:42:05,636 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 03:42:05,636 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 03:42:05,636 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 03:42:05,636 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 03:42:05,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 03:42:05,636 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 03:42:05,637 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 03:42:05,637 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 03:42:05,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 03:42:05,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 03:42:05,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 03:42:05,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:42:05,637 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 03:42:05,637 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 03:42:05,638 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 03:42:05,638 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 03:42:05,638 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 03:42:05,638 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 03:42:05,638 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 03:42:05,837 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 03:42:05,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 03:42:05,868 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 03:42:05,869 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 03:42:05,870 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 03:42:05,871 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/loopv3.c [2022-04-28 03:42:05,920 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7703bf50/169488cd7a584a8ead8b533b1ccf3540/FLAG0b22409be [2022-04-28 03:42:06,306 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 03:42:06,306 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c [2022-04-28 03:42:06,311 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7703bf50/169488cd7a584a8ead8b533b1ccf3540/FLAG0b22409be [2022-04-28 03:42:06,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7703bf50/169488cd7a584a8ead8b533b1ccf3540 [2022-04-28 03:42:06,321 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 03:42:06,322 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 03:42:06,323 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 03:42:06,323 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 03:42:06,329 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 03:42:06,330 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,330 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7400cd9d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06, skipping insertion in model container [2022-04-28 03:42:06,331 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,335 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 03:42:06,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 03:42:06,468 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2022-04-28 03:42:06,477 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:42:06,484 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 03:42:06,494 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/loopv3.c[456,469] [2022-04-28 03:42:06,497 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 03:42:06,507 INFO L208 MainTranslator]: Completed translation [2022-04-28 03:42:06,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06 WrapperNode [2022-04-28 03:42:06,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 03:42:06,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 03:42:06,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 03:42:06,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 03:42:06,517 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,517 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,524 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,536 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,542 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 03:42:06,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 03:42:06,547 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 03:42:06,547 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 03:42:06,548 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (1/1) ... [2022-04-28 03:42:06,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 03:42:06,562 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 03:42:06,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-28 03:42:06,581 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-28 03:42:06,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 03:42:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 03:42:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 03:42:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 03:42:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 03:42:06,604 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 03:42:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-04-28 03:42:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 03:42:06,604 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 03:42:06,605 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 03:42:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 03:42:06,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 03:42:06,655 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 03:42:06,657 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 03:42:06,769 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 03:42:06,775 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 03:42:06,775 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 03:42:06,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:42:06 BoogieIcfgContainer [2022-04-28 03:42:06,777 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 03:42:06,778 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 03:42:06,778 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 03:42:06,781 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 03:42:06,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 03:42:06" (1/3) ... [2022-04-28 03:42:06,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feecaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:42:06, skipping insertion in model container [2022-04-28 03:42:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 03:42:06" (2/3) ... [2022-04-28 03:42:06,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4feecaab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 03:42:06, skipping insertion in model container [2022-04-28 03:42:06,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 03:42:06" (3/3) ... [2022-04-28 03:42:06,783 INFO L111 eAbstractionObserver]: Analyzing ICFG loopv3.c [2022-04-28 03:42:06,794 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 03:42:06,794 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 03:42:06,827 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 03:42:06,832 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@506e3c97, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@323df83d [2022-04-28 03:42:06,832 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 03:42:06,839 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-04-28 03:42:06,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-04-28 03:42:06,844 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:42:06,845 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:42:06,845 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:42:06,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:42:06,849 INFO L85 PathProgramCache]: Analyzing trace with hash -380103047, now seen corresponding path program 1 times [2022-04-28 03:42:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:42:06,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [578837659] [2022-04-28 03:42:06,865 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 03:42:06,865 INFO L85 PathProgramCache]: Analyzing trace with hash -380103047, now seen corresponding path program 2 times [2022-04-28 03:42:06,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 03:42:06,868 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201667020] [2022-04-28 03:42:06,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 03:42:06,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 03:42:06,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:42:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 03:42:07,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 03:42:07,206 INFO L290 TraceCheckUtils]: 0: Hoare triple {31#(and (= |old(~SIZE~0)| ~SIZE~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~SIZE~0 := 50000001; {29#(<= 50000001 ~SIZE~0)} is VALID [2022-04-28 03:42:07,207 INFO L290 TraceCheckUtils]: 1: Hoare triple {29#(<= 50000001 ~SIZE~0)} assume true; {29#(<= 50000001 ~SIZE~0)} is VALID [2022-04-28 03:42:07,208 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {29#(<= 50000001 ~SIZE~0)} {24#true} #52#return; {29#(<= 50000001 ~SIZE~0)} is VALID [2022-04-28 03:42:07,209 INFO L272 TraceCheckUtils]: 0: Hoare triple {24#true} call ULTIMATE.init(); {31#(and (= |old(~SIZE~0)| ~SIZE~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 03:42:07,216 INFO L290 TraceCheckUtils]: 1: Hoare triple {31#(and (= |old(~SIZE~0)| ~SIZE~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3);~SIZE~0 := 50000001; {29#(<= 50000001 ~SIZE~0)} is VALID [2022-04-28 03:42:07,217 INFO L290 TraceCheckUtils]: 2: Hoare triple {29#(<= 50000001 ~SIZE~0)} assume true; {29#(<= 50000001 ~SIZE~0)} is VALID [2022-04-28 03:42:07,217 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {29#(<= 50000001 ~SIZE~0)} {24#true} #52#return; {29#(<= 50000001 ~SIZE~0)} is VALID [2022-04-28 03:42:07,218 INFO L272 TraceCheckUtils]: 4: Hoare triple {29#(<= 50000001 ~SIZE~0)} call #t~ret5 := main(); {29#(<= 50000001 ~SIZE~0)} is VALID [2022-04-28 03:42:07,219 INFO L290 TraceCheckUtils]: 5: Hoare triple {29#(<= 50000001 ~SIZE~0)} havoc ~i~0;havoc ~j~0;~i~0 := 0;~j~0 := 0; {30#(and (= main_~i~0 0) (<= 50000001 ~SIZE~0))} is VALID [2022-04-28 03:42:07,220 INFO L290 TraceCheckUtils]: 6: Hoare triple {30#(and (= main_~i~0 0) (<= 50000001 ~SIZE~0))} assume !(~i~0 < ~SIZE~0); {25#false} is VALID [2022-04-28 03:42:07,221 INFO L290 TraceCheckUtils]: 7: Hoare triple {25#false} ~j~0 := (if ~i~0 < 0 && 0 != ~i~0 % 4 then 1 + ~i~0 / 4 else ~i~0 / 4); {25#false} is VALID [2022-04-28 03:42:07,221 INFO L272 TraceCheckUtils]: 8: Hoare triple {25#false} call __VERIFIER_assert((if 4 * ~j~0 == ~i~0 then 1 else 0)); {25#false} is VALID [2022-04-28 03:42:07,222 INFO L290 TraceCheckUtils]: 9: Hoare triple {25#false} ~cond := #in~cond; {25#false} is VALID [2022-04-28 03:42:07,222 INFO L290 TraceCheckUtils]: 10: Hoare triple {25#false} assume 0 == ~cond; {25#false} is VALID [2022-04-28 03:42:07,222 INFO L290 TraceCheckUtils]: 11: Hoare triple {25#false} assume !false; {25#false} is VALID [2022-04-28 03:42:07,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-28 03:42:07,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 03:42:07,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201667020] [2022-04-28 03:42:07,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201667020] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:42:07,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:42:07,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 03:42:07,229 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 03:42:07,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [578837659] [2022-04-28 03:42:07,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [578837659] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 03:42:07,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 03:42:07,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 03:42:07,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039825034] [2022-04-28 03:42:07,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 03:42:07,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 03:42:07,238 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 03:42:07,240 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,259 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 12 edges. 12 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:42:07,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 03:42:07,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 03:42:07,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 03:42:07,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 03:42:07,291 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:42:07,507 INFO L93 Difference]: Finished difference Result 36 states and 43 transitions. [2022-04-28 03:42:07,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 03:42:07,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-04-28 03:42:07,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 03:42:07,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-28 03:42:07,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 43 transitions. [2022-04-28 03:42:07,522 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 43 transitions. [2022-04-28 03:42:07,570 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 43 edges. 43 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:42:07,577 INFO L225 Difference]: With dead ends: 36 [2022-04-28 03:42:07,577 INFO L226 Difference]: Without dead ends: 16 [2022-04-28 03:42:07,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-04-28 03:42:07,582 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 29 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 03:42:07,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 22 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 03:42:07,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2022-04-28 03:42:07,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2022-04-28 03:42:07,634 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 03:42:07,635 INFO L82 GeneralOperation]: Start isEquivalent. First operand 16 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,636 INFO L74 IsIncluded]: Start isIncluded. First operand 16 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,636 INFO L87 Difference]: Start difference. First operand 16 states. Second operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:42:07,638 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-04-28 03:42:07,638 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-04-28 03:42:07,639 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:42:07,639 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:42:07,639 INFO L74 IsIncluded]: Start isIncluded. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 16 states. [2022-04-28 03:42:07,639 INFO L87 Difference]: Start difference. First operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand 16 states. [2022-04-28 03:42:07,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 03:42:07,642 INFO L93 Difference]: Finished difference Result 16 states and 18 transitions. [2022-04-28 03:42:07,642 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-04-28 03:42:07,642 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 03:42:07,643 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 03:42:07,643 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 03:42:07,643 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 03:42:07,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 10 states have (on average 1.2) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2022-04-28 03:42:07,646 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 12 [2022-04-28 03:42:07,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 03:42:07,646 INFO L495 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2022-04-28 03:42:07,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-04-28 03:42:07,646 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 15 states and 16 transitions. [2022-04-28 03:42:07,664 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 16 edges. 16 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 03:42:07,664 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2022-04-28 03:42:07,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-04-28 03:42:07,664 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 03:42:07,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 03:42:07,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 03:42:07,665 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 03:42:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 03:42:07,666 INFO L85 PathProgramCache]: Analyzing trace with hash 437044508, now seen corresponding path program 1 times [2022-04-28 03:42:07,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 03:42:07,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1037057138] [2022-04-28 03:42:08,252 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-04-28 03:42:08,252 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.logic.Theory.term(Theory.java:1603) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:401) at de.uni_freiburg.informatik.ultimate.logic.NoopScript.term(NoopScript.java:392) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.term(WrapperScript.java:249) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.PredicateHelper.makeReflexive(PredicateHelper.java:222) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:253) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:195) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleAcceleratedInterpolation.construct(IpTcStrategyModuleAcceleratedInterpolation.java:80) 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.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:209) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:121) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:82) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:248) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:366) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:348) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:409) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:300) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:260) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:152) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:123) 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) [2022-04-28 03:42:08,262 INFO L158 Benchmark]: Toolchain (without parser) took 1936.42ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 127.0MB in the beginning and 142.7MB in the end (delta: -15.7MB). Peak memory consumption was 20.4MB. Max. memory is 8.0GB. [2022-04-28 03:42:08,263 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 03:42:08,264 INFO L158 Benchmark]: CACSL2BoogieTranslator took 184.95ms. Allocated memory is still 178.3MB. Free memory was 126.9MB in the beginning and 153.9MB in the end (delta: -27.0MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. [2022-04-28 03:42:08,264 INFO L158 Benchmark]: Boogie Preprocessor took 37.56ms. Allocated memory is still 178.3MB. Free memory was 153.9MB in the beginning and 152.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 03:42:08,265 INFO L158 Benchmark]: RCFGBuilder took 230.13ms. Allocated memory is still 178.3MB. Free memory was 152.5MB in the beginning and 142.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-28 03:42:08,267 INFO L158 Benchmark]: TraceAbstraction took 1479.43ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 141.7MB in the beginning and 142.7MB in the end (delta: -1.0MB). Peak memory consumption was 35.0MB. Max. memory is 8.0GB. [2022-04-28 03:42:08,271 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 178.3MB. Free memory is still 143.2MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 184.95ms. Allocated memory is still 178.3MB. Free memory was 126.9MB in the beginning and 153.9MB in the end (delta: -27.0MB). Peak memory consumption was 12.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 37.56ms. Allocated memory is still 178.3MB. Free memory was 153.9MB in the beginning and 152.5MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 230.13ms. Allocated memory is still 178.3MB. Free memory was 152.5MB in the beginning and 142.3MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1479.43ms. Allocated memory was 178.3MB in the beginning and 213.9MB in the end (delta: 35.7MB). Free memory was 141.7MB in the beginning and 142.7MB in the end (delta: -1.0MB). Peak memory consumption was 35.0MB. Max. memory is 8.0GB. * 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.logic.Theory.term(Theory.java:1603) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-04-28 03:42:08,307 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...