/usr/bin/java -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/loop-simple/nested_3.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 03:05:55,052 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 03:05:55,054 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 03:05:55,083 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 03:05:55,111 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 03:05:55,111 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 03:05:55,115 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 03:05:55,115 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-19 03:05:55,123 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 03:05:55,123 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 03:05:55,124 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 03:05:55,125 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-19 03:05:55,125 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 03:05:55,125 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-19 03:05:55,125 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 03:05:55,125 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 03:05:55,125 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 03:05:55,126 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 03:05:55,126 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-19 03:05:55,126 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 03:05:55,126 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 03:05:55,126 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 03:05:55,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 03:05:55,127 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 03:05:55,131 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 03:05:55,132 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 03:05:55,132 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 03:05:55,132 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 03:05:55,132 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 03:05:55,133 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 03:05:55,133 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 03:05:55,133 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 03:05:55,133 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-19 03:05:55,133 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 03:05:55,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 03:05:55,396 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 03:05:55,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 03:05:55,399 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 03:05:55,402 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 03:05:55,404 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-simple/nested_3.c [2022-03-19 03:05:55,475 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63660c5a/c5d4c13adf9d409c943624f031908548/FLAG9777ec4a6 [2022-03-19 03:05:55,838 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 03:05:55,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c [2022-03-19 03:05:55,847 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63660c5a/c5d4c13adf9d409c943624f031908548/FLAG9777ec4a6 [2022-03-19 03:05:56,263 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b63660c5a/c5d4c13adf9d409c943624f031908548 [2022-03-19 03:05:56,265 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 03:05:56,266 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 03:05:56,269 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 03:05:56,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 03:05:56,273 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 03:05:56,274 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,276 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cca558a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56, skipping insertion in model container [2022-03-19 03:05:56,276 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,281 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 03:05:56,294 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 03:05:56,521 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c[784,797] [2022-03-19 03:05:56,525 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 03:05:56,539 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 03:05:56,553 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-simple/nested_3.c[784,797] [2022-03-19 03:05:56,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 03:05:56,564 INFO L208 MainTranslator]: Completed translation [2022-03-19 03:05:56,565 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56 WrapperNode [2022-03-19 03:05:56,565 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 03:05:56,566 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 03:05:56,566 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 03:05:56,566 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 03:05:56,577 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,577 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,587 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,590 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,591 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,592 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 03:05:56,593 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 03:05:56,593 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 03:05:56,593 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 03:05:56,595 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (1/1) ... [2022-03-19 03:05:56,605 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 03:05:56,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 03:05:56,625 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) [2022-03-19 03:05:56,627 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 [2022-03-19 03:05:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 03:05:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 03:05:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 03:05:56,653 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 03:05:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 03:05:56,653 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 03:05:56,654 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 03:05:56,705 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 03:05:56,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 03:05:56,779 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 03:05:56,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 03:05:56,785 INFO L299 CfgBuilder]: Removed 3 assume(true) statements. [2022-03-19 03:05:56,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 03:05:56 BoogieIcfgContainer [2022-03-19 03:05:56,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 03:05:56,788 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 03:05:56,789 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 03:05:56,792 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 03:05:56,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 03:05:56" (1/3) ... [2022-03-19 03:05:56,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1555a4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 03:05:56, skipping insertion in model container [2022-03-19 03:05:56,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 03:05:56" (2/3) ... [2022-03-19 03:05:56,793 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1555a4a9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 03:05:56, skipping insertion in model container [2022-03-19 03:05:56,793 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 03:05:56" (3/3) ... [2022-03-19 03:05:56,795 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_3.c [2022-03-19 03:05:56,799 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 03:05:56,799 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 03:05:56,834 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 03:05:56,840 INFO L340 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 [2022-03-19 03:05:56,840 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 03:05:56,852 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 03:05:56,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-19 03:05:56,858 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 03:05:56,858 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 03:05:56,859 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 03:05:56,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 03:05:56,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1607939523, now seen corresponding path program 1 times [2022-03-19 03:05:56,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 03:05:56,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [385330120] [2022-03-19 03:05:56,881 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 03:05:56,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1607939523, now seen corresponding path program 2 times [2022-03-19 03:05:56,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 03:05:56,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589070642] [2022-03-19 03:05:56,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 03:05:56,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 03:05:56,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:05:57,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 03:05:57,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:05:57,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 03:05:57,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 03:05:57,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589070642] [2022-03-19 03:05:57,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589070642] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:05:57,026 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:05:57,026 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 03:05:57,028 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 03:05:57,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [385330120] [2022-03-19 03:05:57,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [385330120] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:05:57,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:05:57,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 03:05:57,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470386819] [2022-03-19 03:05:57,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 03:05:57,034 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 03:05:57,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 03:05:57,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 03:05:57,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 03:05:57,058 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.5714285714285714) internal successors, (22), 15 states have internal predecessors, (22), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:05:57,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 03:05:57,094 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-03-19 03:05:57,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 03:05:57,096 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-19 03:05:57,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 03:05:57,102 INFO L225 Difference]: With dead ends: 34 [2022-03-19 03:05:57,102 INFO L226 Difference]: Without dead ends: 15 [2022-03-19 03:05:57,112 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 03:05:57,118 INFO L912 BasicCegarLoop]: 22 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 03:05:57,119 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 25 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 03:05:57,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2022-03-19 03:05:57,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2022-03-19 03:05:57,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 11 states have internal predecessors, (14), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:05:57,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 17 transitions. [2022-03-19 03:05:57,162 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 17 transitions. Word has length 9 [2022-03-19 03:05:57,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 03:05:57,163 INFO L478 AbstractCegarLoop]: Abstraction has 15 states and 17 transitions. [2022-03-19 03:05:57,163 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 2 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:05:57,165 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 17 transitions. [2022-03-19 03:05:57,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-03-19 03:05:57,165 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 03:05:57,165 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 03:05:57,184 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 03:05:57,184 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 03:05:57,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 03:05:57,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1607968353, now seen corresponding path program 1 times [2022-03-19 03:05:57,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 03:05:57,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [978219372] [2022-03-19 03:05:57,187 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 03:05:57,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1607968353, now seen corresponding path program 2 times [2022-03-19 03:05:57,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 03:05:57,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644315260] [2022-03-19 03:05:57,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 03:05:57,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 03:05:57,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:05:57,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 03:05:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 03:05:57,264 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 03:05:57,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 03:05:57,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644315260] [2022-03-19 03:05:57,265 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644315260] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:05:57,265 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:05:57,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 03:05:57,266 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 03:05:57,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [978219372] [2022-03-19 03:05:57,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [978219372] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 03:05:57,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 03:05:57,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 03:05:57,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384449294] [2022-03-19 03:05:57,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 03:05:57,268 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 03:05:57,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 03:05:57,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 03:05:57,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 03:05:57,269 INFO L87 Difference]: Start difference. First operand 15 states and 17 transitions. Second operand has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:05:57,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 03:05:57,308 INFO L93 Difference]: Finished difference Result 24 states and 28 transitions. [2022-03-19 03:05:57,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 03:05:57,309 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-03-19 03:05:57,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 03:05:57,310 INFO L225 Difference]: With dead ends: 24 [2022-03-19 03:05:57,310 INFO L226 Difference]: Without dead ends: 21 [2022-03-19 03:05:57,311 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-19 03:05:57,314 INFO L912 BasicCegarLoop]: 15 mSDtfsCounter, 26 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 03:05:57,316 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 03:05:57,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-03-19 03:05:57,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 16. [2022-03-19 03:05:57,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.25) internal successors, (15), 12 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:05:57,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 18 transitions. [2022-03-19 03:05:57,331 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 18 transitions. Word has length 9 [2022-03-19 03:05:57,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 03:05:57,331 INFO L478 AbstractCegarLoop]: Abstraction has 16 states and 18 transitions. [2022-03-19 03:05:57,332 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.5) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 03:05:57,332 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 18 transitions. [2022-03-19 03:05:57,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-19 03:05:57,332 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 03:05:57,332 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 03:05:57,333 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 03:05:57,333 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 03:05:57,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 03:05:57,333 INFO L85 PathProgramCache]: Analyzing trace with hash -1181899718, now seen corresponding path program 1 times [2022-03-19 03:05:57,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 03:05:57,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1797483595] [2022-03-19 03:05:57,389 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 1 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {0={1=1}, 1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 1 QuantifierFreeResult [2022-03-19 03:05:57,390 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 03:05:57,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1694000335, now seen corresponding path program 1 times [2022-03-19 03:05:57,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 03:05:57,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071686269] [2022-03-19 03:05:57,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 03:05:57,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 03:05:57,407 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 03:05:57,407 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheck.(InterpolatingTraceCheck.java:91) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.InterpolatingTraceCheckCraig.(InterpolatingTraceCheckCraig.java:89) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:79) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleCraig.construct(IpTcStrategyModuleCraig.java:1) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.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.lib.acceleratedinterpolation.AcceleratedInterpolationCore.runStrategy(AcceleratedInterpolationCore.java:300) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolationCore.acceleratedInterpolationCoreIsCorrect(AcceleratedInterpolationCore.java:289) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:190) 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:596) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.startCegar(AbstractCegarLoop.java:349) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.runCegar(AbstractCegarLoop.java:331) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopUtils.getCegarLoopResult(CegarLoopUtils.java:56) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.executeCegarLoop(TraceAbstractionStarter.java:414) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseProgram(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.analyseSequentialProgram(TraceAbstractionStarter.java:264) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:156) 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) Caused by: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms at de.uni_freiburg.informatik.ultimate.logic.NoopScript.annotate(NoopScript.java:471) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.logic.WrapperScript.annotate(WrapperScript.java:282) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertTerm(AnnotateAndAssertCodeBlocks.java:192) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAssertCodeBlocks.annotateAndAssertNonCall(AnnotateAndAssertCodeBlocks.java:109) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.AnnotateAndAsserter.buildAnnotatedSsaAndAssertTerms(AnnotateAndAsserter.java:101) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.checkTrace(TraceCheck.java:313) at de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:211) ... 40 more [2022-03-19 03:05:57,414 INFO L158 Benchmark]: Toolchain (without parser) took 1144.17ms. Allocated memory is still 178.3MB. Free memory was 126.8MB in the beginning and 109.4MB in the end (delta: 17.4MB). Peak memory consumption was 17.7MB. Max. memory is 8.0GB. [2022-03-19 03:05:57,415 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 178.3MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 03:05:57,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 295.79ms. Allocated memory is still 178.3MB. Free memory was 126.6MB in the beginning and 154.5MB in the end (delta: -27.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-19 03:05:57,415 INFO L158 Benchmark]: Boogie Preprocessor took 26.39ms. Allocated memory is still 178.3MB. Free memory was 154.5MB in the beginning and 153.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-19 03:05:57,416 INFO L158 Benchmark]: RCFGBuilder took 194.23ms. Allocated memory is still 178.3MB. Free memory was 153.2MB in the beginning and 143.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-19 03:05:57,416 INFO L158 Benchmark]: TraceAbstraction took 621.35ms. Allocated memory is still 178.3MB. Free memory was 143.0MB in the beginning and 109.4MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. [2022-03-19 03:05:57,418 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 178.3MB. Free memory is still 143.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 295.79ms. Allocated memory is still 178.3MB. Free memory was 126.6MB in the beginning and 154.5MB in the end (delta: -27.9MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 26.39ms. Allocated memory is still 178.3MB. Free memory was 154.5MB in the beginning and 153.2MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 194.23ms. Allocated memory is still 178.3MB. Free memory was 153.2MB in the beginning and 143.7MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 621.35ms. Allocated memory is still 178.3MB. Free memory was 143.0MB in the beginning and 109.4MB in the end (delta: 33.6MB). Peak memory consumption was 33.6MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: de.uni_freiburg.informatik.ultimate.logic.SMTLIBException: Cannot name open terms: de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.singletracecheck.TraceCheck.(TraceCheck.java:232) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-19 03:05:57,445 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...