/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/loops-crafted-1/in-de62.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 13:19:09,399 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 13:19:09,428 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 13:19:09,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 13:19:09,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 13:19:09,459 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 13:19:09,462 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 13:19:09,463 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 13:19:09,464 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 13:19:09,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 13:19:09,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 13:19:09,466 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 13:19:09,466 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 13:19:09,467 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 13:19:09,468 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 13:19:09,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 13:19:09,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 13:19:09,469 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 13:19:09,470 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 13:19:09,472 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 13:19:09,473 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 13:19:09,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 13:19:09,477 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 13:19:09,477 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 13:19:09,478 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 13:19:09,479 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 13:19:09,480 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 13:19:09,480 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 13:19:09,480 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 13:19:09,481 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 13:19:09,481 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 13:19:09,481 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 13:19:09,482 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 13:19:09,482 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 13:19:09,483 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 13:19:09,483 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 13:19:09,483 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 13:19:09,484 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 13:19:09,484 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 13:19:09,484 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 13:19:09,485 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 13:19:09,490 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 13:19:09,491 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-03-20 13:19:09,498 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 13:19:09,498 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 13:19:09,499 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 13:19:09,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 13:19:09,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 13:19:09,499 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 13:19:09,499 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 13:19:09,499 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 13:19:09,500 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 13:19:09,500 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:19:09,501 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 13:19:09,501 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 13:19:09,501 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 13:19:09,501 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 13:19:09,501 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 13:19:09,501 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 13:19:09,501 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 13:19:09,689 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 13:19:09,711 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 13:19:09,713 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 13:19:09,714 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 13:19:09,714 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 13:19:09,715 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/in-de62.c [2022-03-20 13:19:09,771 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ac05c5a/d472c256e3ea4f13b1d97b8f4b3230d0/FLAG90c0447ff [2022-03-20 13:19:10,108 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 13:19:10,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/in-de62.c [2022-03-20 13:19:10,114 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ac05c5a/d472c256e3ea4f13b1d97b8f4b3230d0/FLAG90c0447ff [2022-03-20 13:19:10,126 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51ac05c5a/d472c256e3ea4f13b1d97b8f4b3230d0 [2022-03-20 13:19:10,128 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 13:19:10,129 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 13:19:10,131 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 13:19:10,131 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 13:19:10,133 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 13:19:10,134 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,135 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c521617 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10, skipping insertion in model container [2022-03-20 13:19:10,135 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,140 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 13:19:10,150 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 13:19:10,278 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/in-de62.c[368,381] [2022-03-20 13:19:10,293 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:19:10,301 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 13:19:10,311 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/in-de62.c[368,381] [2022-03-20 13:19:10,321 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:19:10,331 INFO L208 MainTranslator]: Completed translation [2022-03-20 13:19:10,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10 WrapperNode [2022-03-20 13:19:10,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 13:19:10,334 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 13:19:10,334 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 13:19:10,334 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 13:19:10,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,342 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,348 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,348 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,364 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,365 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,366 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 13:19:10,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 13:19:10,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 13:19:10,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 13:19:10,367 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (1/1) ... [2022-03-20 13:19:10,372 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:19:10,379 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:19:10,400 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) [2022-03-20 13:19:10,418 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 [2022-03-20 13:19:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 13:19:10,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 13:19:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 13:19:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 13:19:10,429 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 13:19:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 13:19:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 13:19:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 13:19:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 13:19:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-03-20 13:19:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 13:19:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 13:19:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 13:19:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 13:19:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 13:19:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 13:19:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 13:19:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 13:19:10,483 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 13:19:10,484 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 13:19:10,647 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 13:19:10,650 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 13:19:10,650 INFO L299 CfgBuilder]: Removed 6 assume(true) statements. [2022-03-20 13:19:10,652 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:19:10 BoogieIcfgContainer [2022-03-20 13:19:10,652 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 13:19:10,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 13:19:10,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 13:19:10,655 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 13:19:10,655 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 01:19:10" (1/3) ... [2022-03-20 13:19:10,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eedde5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:19:10, skipping insertion in model container [2022-03-20 13:19:10,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:19:10" (2/3) ... [2022-03-20 13:19:10,656 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1eedde5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:19:10, skipping insertion in model container [2022-03-20 13:19:10,656 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:19:10" (3/3) ... [2022-03-20 13:19:10,657 INFO L111 eAbstractionObserver]: Analyzing ICFG in-de62.c [2022-03-20 13:19:10,660 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 13:19:10,661 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 13:19:10,689 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 13:19:10,698 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 [2022-03-20 13:19:10,698 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 13:19:10,710 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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) [2022-03-20 13:19:10,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 13:19:10,717 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:19:10,717 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:19:10,718 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:19:10,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:19:10,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1370249117, now seen corresponding path program 1 times [2022-03-20 13:19:10,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:10,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [385472130] [2022-03-20 13:19:10,747 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:19:10,748 INFO L85 PathProgramCache]: Analyzing trace with hash 1370249117, now seen corresponding path program 2 times [2022-03-20 13:19:10,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:19:10,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711025233] [2022-03-20 13:19:10,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:19:10,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:19:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:10,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:19:10,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:10,901 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:19:10,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:19:10,902 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711025233] [2022-03-20 13:19:10,903 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711025233] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:10,903 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:10,903 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 13:19:10,905 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:19:10,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [385472130] [2022-03-20 13:19:10,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [385472130] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:10,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:10,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 13:19:10,907 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34867977] [2022-03-20 13:19:10,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:19:10,910 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 13:19:10,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:10,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 13:19:10,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 13:19:10,936 INFO L87 Difference]: Start difference. First operand has 25 states, 17 states have (on average 1.8235294117647058) internal successors, (31), 18 states have internal predecessors, (31), 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 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 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) [2022-03-20 13:19:10,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:19:10,980 INFO L93 Difference]: Finished difference Result 43 states and 66 transitions. [2022-03-20 13:19:10,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 13:19:10,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 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 17 [2022-03-20 13:19:10,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:19:10,992 INFO L225 Difference]: With dead ends: 43 [2022-03-20 13:19:10,992 INFO L226 Difference]: Without dead ends: 18 [2022-03-20 13:19:10,996 INFO L912 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 [2022-03-20 13:19:10,999 INFO L913 BasicCegarLoop]: 29 mSDtfsCounter, 21 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:19:11,000 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [22 Valid, 32 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:19:11,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2022-03-20 13:19:11,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2022-03-20 13:19:11,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 13 states have (on average 1.4615384615384615) internal successors, (19), 13 states have internal predecessors, (19), 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) [2022-03-20 13:19:11,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 23 transitions. [2022-03-20 13:19:11,030 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 23 transitions. Word has length 17 [2022-03-20 13:19:11,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:19:11,031 INFO L478 AbstractCegarLoop]: Abstraction has 18 states and 23 transitions. [2022-03-20 13:19:11,031 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 2 states have internal predecessors, (13), 2 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) [2022-03-20 13:19:11,031 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 23 transitions. [2022-03-20 13:19:11,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-20 13:19:11,032 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:19:11,032 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:19:11,033 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 13:19:11,033 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:19:11,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:19:11,034 INFO L85 PathProgramCache]: Analyzing trace with hash 2115201689, now seen corresponding path program 1 times [2022-03-20 13:19:11,034 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:11,034 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2027653619] [2022-03-20 13:19:11,035 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:19:11,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2115201689, now seen corresponding path program 2 times [2022-03-20 13:19:11,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:19:11,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118991520] [2022-03-20 13:19:11,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:19:11,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:19:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:11,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:19:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:11,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:19:11,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:19:11,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118991520] [2022-03-20 13:19:11,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118991520] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:11,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:11,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:19:11,137 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:19:11,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2027653619] [2022-03-20 13:19:11,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2027653619] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:11,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:11,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 13:19:11,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356702504] [2022-03-20 13:19:11,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:19:11,138 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 13:19:11,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:11,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 13:19:11,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 13:19:11,139 INFO L87 Difference]: Start difference. First operand 18 states and 23 transitions. Second operand has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 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) [2022-03-20 13:19:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:19:11,240 INFO L93 Difference]: Finished difference Result 34 states and 46 transitions. [2022-03-20 13:19:11,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 13:19:11,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 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 17 [2022-03-20 13:19:11,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:19:11,241 INFO L225 Difference]: With dead ends: 34 [2022-03-20 13:19:11,241 INFO L226 Difference]: Without dead ends: 23 [2022-03-20 13:19:11,241 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-20 13:19:11,242 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 26 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:19:11,243 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 35 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:19:11,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-20 13:19:11,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-20 13:19:11,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.5) internal successors, (27), 18 states have internal predecessors, (27), 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) [2022-03-20 13:19:11,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 31 transitions. [2022-03-20 13:19:11,248 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 31 transitions. Word has length 17 [2022-03-20 13:19:11,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:19:11,248 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 31 transitions. [2022-03-20 13:19:11,248 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.1666666666666665) internal successors, (13), 4 states have internal predecessors, (13), 2 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) [2022-03-20 13:19:11,249 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 31 transitions. [2022-03-20 13:19:11,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 13:19:11,249 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:19:11,249 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:19:11,249 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 13:19:11,249 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:19:11,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:19:11,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1181238037, now seen corresponding path program 1 times [2022-03-20 13:19:11,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:11,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [72426165] [2022-03-20 13:19:11,263 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 13:19:11,263 INFO L85 PathProgramCache]: Analyzing trace with hash 1181238037, now seen corresponding path program 2 times [2022-03-20 13:19:11,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:19:11,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720828656] [2022-03-20 13:19:11,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:19:11,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:19:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:11,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:19:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:11,316 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:19:11,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:19:11,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720828656] [2022-03-20 13:19:11,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720828656] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:11,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:11,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 13:19:11,317 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:19:11,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [72426165] [2022-03-20 13:19:11,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [72426165] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:11,318 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:11,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 13:19:11,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994752611] [2022-03-20 13:19:11,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:19:11,318 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 13:19:11,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:11,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 13:19:11,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 13:19:11,319 INFO L87 Difference]: Start difference. First operand 23 states and 31 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 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) [2022-03-20 13:19:11,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:19:11,387 INFO L93 Difference]: Finished difference Result 47 states and 69 transitions. [2022-03-20 13:19:11,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 13:19:11,387 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 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 18 [2022-03-20 13:19:11,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:19:11,388 INFO L225 Difference]: With dead ends: 47 [2022-03-20 13:19:11,388 INFO L226 Difference]: Without dead ends: 33 [2022-03-20 13:19:11,389 INFO L912 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 [2022-03-20 13:19:11,389 INFO L913 BasicCegarLoop]: 18 mSDtfsCounter, 32 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:19:11,390 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 25 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:19:11,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-20 13:19:11,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2022-03-20 13:19:11,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 28 states have (on average 1.5) internal successors, (42), 28 states have internal predecessors, (42), 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) [2022-03-20 13:19:11,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 46 transitions. [2022-03-20 13:19:11,398 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 46 transitions. Word has length 18 [2022-03-20 13:19:11,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:19:11,398 INFO L478 AbstractCegarLoop]: Abstraction has 33 states and 46 transitions. [2022-03-20 13:19:11,398 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 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) [2022-03-20 13:19:11,399 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 46 transitions. [2022-03-20 13:19:11,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-20 13:19:11,399 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:19:11,399 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:19:11,399 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 13:19:11,399 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:19:11,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:19:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1710900860, now seen corresponding path program 1 times [2022-03-20 13:19:11,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:11,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1685708179] [2022-03-20 13:19:11,400 INFO L274 tedInterpolationCore]: Could not compute an accelerate. [2022-03-20 13:19:11,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1710900860, now seen corresponding path program 2 times [2022-03-20 13:19:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:19:11,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217137068] [2022-03-20 13:19:11,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:19:11,401 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:19:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:19:11,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:19:11,450 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 13:19:11,450 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:19:11,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217137068] [2022-03-20 13:19:11,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217137068] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:11,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:11,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 13:19:11,451 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:19:11,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1685708179] [2022-03-20 13:19:11,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1685708179] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:19:11,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:19:11,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 13:19:11,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546085901] [2022-03-20 13:19:11,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:19:11,452 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 13:19:11,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:11,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 13:19:11,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 13:19:11,452 INFO L87 Difference]: Start difference. First operand 33 states and 46 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 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) [2022-03-20 13:19:11,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:19:11,495 INFO L93 Difference]: Finished difference Result 49 states and 69 transitions. [2022-03-20 13:19:11,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-20 13:19:11,496 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 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 18 [2022-03-20 13:19:11,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:19:11,496 INFO L225 Difference]: With dead ends: 49 [2022-03-20 13:19:11,497 INFO L226 Difference]: Without dead ends: 37 [2022-03-20 13:19:11,497 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-03-20 13:19:11,498 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 25 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 13:19:11,498 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [25 Valid, 28 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 13:19:11,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2022-03-20 13:19:11,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2022-03-20 13:19:11,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 32 states have (on average 1.46875) internal successors, (47), 32 states have internal predecessors, (47), 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) [2022-03-20 13:19:11,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2022-03-20 13:19:11,521 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 51 transitions. Word has length 18 [2022-03-20 13:19:11,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:19:11,521 INFO L478 AbstractCegarLoop]: Abstraction has 37 states and 51 transitions. [2022-03-20 13:19:11,522 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 2 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) [2022-03-20 13:19:11,522 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 51 transitions. [2022-03-20 13:19:11,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-03-20 13:19:11,522 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:19:11,522 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:19:11,522 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-03-20 13:19:11,523 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:19:11,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:19:11,531 INFO L85 PathProgramCache]: Analyzing trace with hash 375506293, now seen corresponding path program 1 times [2022-03-20 13:19:11,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:19:11,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2061944847] [2022-03-20 13:19:11,652 INFO L89 AcceleratorJordan]: Jordan loop acceleration statistics: 2 HavocedVariables, 2 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={1=1, 2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 13:19:11,653 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-20 13:19:11,654 INFO L85 PathProgramCache]: Analyzing trace with hash -289672842, now seen corresponding path program 1 times [2022-03-20 13:19:11,654 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:19:11,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969665091] [2022-03-20 13:19:11,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:19:11,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:19:11,661 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-03-20 13:19:11,661 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:595) 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 [2022-03-20 13:19:11,664 INFO L158 Benchmark]: Toolchain (without parser) took 1534.99ms. Allocated memory was 187.7MB in the beginning and 230.7MB in the end (delta: 43.0MB). Free memory was 141.1MB in the beginning and 202.2MB in the end (delta: -61.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:19:11,664 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory was 157.0MB in the beginning and 156.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:19:11,665 INFO L158 Benchmark]: CACSL2BoogieTranslator took 201.82ms. Allocated memory is still 187.7MB. Free memory was 140.8MB in the beginning and 165.6MB in the end (delta: -24.8MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. [2022-03-20 13:19:11,665 INFO L158 Benchmark]: Boogie Preprocessor took 31.41ms. Allocated memory is still 187.7MB. Free memory was 165.6MB in the beginning and 164.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 13:19:11,665 INFO L158 Benchmark]: RCFGBuilder took 285.47ms. Allocated memory is still 187.7MB. Free memory was 164.0MB in the beginning and 153.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 13:19:11,666 INFO L158 Benchmark]: TraceAbstraction took 1010.93ms. Allocated memory was 187.7MB in the beginning and 230.7MB in the end (delta: 43.0MB). Free memory was 152.5MB in the beginning and 202.2MB in the end (delta: -49.7MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:19:11,667 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 187.7MB. Free memory was 157.0MB in the beginning and 156.8MB in the end (delta: 146.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 201.82ms. Allocated memory is still 187.7MB. Free memory was 140.8MB in the beginning and 165.6MB in the end (delta: -24.8MB). Peak memory consumption was 11.7MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.41ms. Allocated memory is still 187.7MB. Free memory was 165.6MB in the beginning and 164.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 285.47ms. Allocated memory is still 187.7MB. Free memory was 164.0MB in the beginning and 153.1MB in the end (delta: 11.0MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1010.93ms. Allocated memory was 187.7MB in the beginning and 230.7MB in the end (delta: 43.0MB). Free memory was 152.5MB in the beginning and 202.2MB in the end (delta: -49.7MB). There was no memory consumed. 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. [2022-03-20 13:19:11,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...