/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/verifythis/elimination_max.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 19:16:18,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 19:16:18,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 19:16:18,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 19:16:18,377 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 19:16:18,378 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 19:16:18,379 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 19:16:18,380 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 19:16:18,381 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 19:16:18,382 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 19:16:18,382 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 19:16:18,383 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 19:16:18,383 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 19:16:18,384 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 19:16:18,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 19:16:18,385 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 19:16:18,386 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 19:16:18,386 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 19:16:18,387 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 19:16:18,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 19:16:18,389 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 19:16:18,390 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 19:16:18,391 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 19:16:18,391 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 19:16:18,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 19:16:18,394 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 19:16:18,394 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 19:16:18,394 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 19:16:18,395 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 19:16:18,395 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 19:16:18,395 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 19:16:18,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 19:16:18,396 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 19:16:18,396 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 19:16:18,397 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 19:16:18,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 19:16:18,398 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 19:16:18,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 19:16:18,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 19:16:18,398 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 19:16:18,399 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 19:16:18,399 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 19:16:18,400 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-20 19:16:18,405 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 19:16:18,406 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 19:16:18,406 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 19:16:18,407 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 19:16:18,408 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 19:16:18,408 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 19:16:18,408 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 19:16:18,408 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 19:16:18,408 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 19:16:18,408 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 19:16:18,408 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 19:16:18,408 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 19:16:18,408 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 19:16:18,409 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 19:16:18,409 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-20 19:16:18,409 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 19:16:18,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 19:16:18,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 19:16:18,603 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 19:16:18,604 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 19:16:18,607 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 19:16:18,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/verifythis/elimination_max.c [2022-03-20 19:16:18,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538e3e23/7205a1beda0b486cbb344b2605bec8d9/FLAG13faa3e6e [2022-03-20 19:16:19,011 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 19:16:19,011 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c [2022-03-20 19:16:19,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538e3e23/7205a1beda0b486cbb344b2605bec8d9/FLAG13faa3e6e [2022-03-20 19:16:19,023 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c538e3e23/7205a1beda0b486cbb344b2605bec8d9 [2022-03-20 19:16:19,025 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 19:16:19,026 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 19:16:19,027 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 19:16:19,027 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 19:16:19,029 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 19:16:19,030 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,030 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@541325de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19, skipping insertion in model container [2022-03-20 19:16:19,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,034 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 19:16:19,053 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 19:16:19,167 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2022-03-20 19:16:19,178 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 19:16:19,184 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 19:16:19,193 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/verifythis/elimination_max.c[485,498] [2022-03-20 19:16:19,198 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 19:16:19,207 INFO L208 MainTranslator]: Completed translation [2022-03-20 19:16:19,208 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19 WrapperNode [2022-03-20 19:16:19,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 19:16:19,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 19:16:19,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 19:16:19,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 19:16:19,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,235 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,238 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 19:16:19,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 19:16:19,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 19:16:19,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 19:16:19,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (1/1) ... [2022-03-20 19:16:19,250 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 19:16:19,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 19:16:19,267 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 19:16:19,274 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 19:16:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 19:16:19,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 19:16:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 19:16:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 19:16:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 19:16:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 19:16:19,299 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2022-03-20 19:16:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2022-03-20 19:16:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure free [2022-03-20 19:16:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 19:16:19,299 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 19:16:19,300 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 19:16:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 19:16:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 19:16:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 19:16:19,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 19:16:19,355 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 19:16:19,356 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 19:16:19,452 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 19:16:19,458 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 19:16:19,458 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-03-20 19:16:19,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:16:19 BoogieIcfgContainer [2022-03-20 19:16:19,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 19:16:19,461 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 19:16:19,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 19:16:19,463 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 19:16:19,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 07:16:19" (1/3) ... [2022-03-20 19:16:19,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2194a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:16:19, skipping insertion in model container [2022-03-20 19:16:19,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 07:16:19" (2/3) ... [2022-03-20 19:16:19,464 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b2194a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 07:16:19, skipping insertion in model container [2022-03-20 19:16:19,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 07:16:19" (3/3) ... [2022-03-20 19:16:19,465 INFO L111 eAbstractionObserver]: Analyzing ICFG elimination_max.c [2022-03-20 19:16:19,469 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 19:16:19,469 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 19:16:19,498 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 19:16:19,503 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 19:16:19,503 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 19:16:19,516 INFO L276 IsEmpty]: Start isEmpty. Operand has 39 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) [2022-03-20 19:16:19,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 19:16:19,522 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 19:16:19,522 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 19:16:19,522 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 19:16:19,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 19:16:19,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1951153279, now seen corresponding path program 1 times [2022-03-20 19:16:19,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 19:16:19,537 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [753413713] [2022-03-20 19:16:19,546 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 19:16:19,547 INFO L85 PathProgramCache]: Analyzing trace with hash -1951153279, now seen corresponding path program 2 times [2022-03-20 19:16:19,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 19:16:19,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270597019] [2022-03-20 19:16:19,549 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 19:16:19,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 19:16:19,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:19,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 19:16:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:19,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 19:16:19,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:19,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 19:16:19,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:19,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 19:16:19,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:19,761 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 19:16:19,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 19:16:19,762 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270597019] [2022-03-20 19:16:19,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270597019] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:16:19,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:16:19,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 19:16:19,764 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 19:16:19,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [753413713] [2022-03-20 19:16:19,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [753413713] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:16:19,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:16:19,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-20 19:16:19,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593209564] [2022-03-20 19:16:19,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 19:16:19,768 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-20 19:16:19,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 19:16:19,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-20 19:16:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-20 19:16:19,792 INFO L87 Difference]: Start difference. First operand has 39 states, 25 states have (on average 1.32) internal successors, (33), 26 states have internal predecessors, (33), 7 states have call successors, (7), 5 states have call predecessors, (7), 5 states have return successors, (7), 7 states have call predecessors, (7), 7 states have call successors, (7) Second operand has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 19:16:19,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 19:16:19,921 INFO L93 Difference]: Finished difference Result 71 states and 90 transitions. [2022-03-20 19:16:19,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-20 19:16:19,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-03-20 19:16:19,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 19:16:19,929 INFO L225 Difference]: With dead ends: 71 [2022-03-20 19:16:19,929 INFO L226 Difference]: Without dead ends: 34 [2022-03-20 19:16:19,931 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 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 19:16:19,936 INFO L913 BasicCegarLoop]: 36 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 19:16:19,937 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 38 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 19:16:19,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-03-20 19:16:19,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2022-03-20 19:16:19,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 22 states have internal predecessors, (25), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 19:16:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2022-03-20 19:16:19,975 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 29 [2022-03-20 19:16:19,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 19:16:19,976 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2022-03-20 19:16:19,977 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.0) internal successors, (16), 2 states have internal predecessors, (16), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 19:16:19,978 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2022-03-20 19:16:19,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2022-03-20 19:16:19,980 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 19:16:19,980 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 19:16:19,981 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 19:16:19,981 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 19:16:19,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 19:16:19,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1957169217, now seen corresponding path program 1 times [2022-03-20 19:16:19,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 19:16:19,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1160033719] [2022-03-20 19:16:19,983 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 19:16:19,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1957169217, now seen corresponding path program 2 times [2022-03-20 19:16:19,984 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 19:16:19,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692125565] [2022-03-20 19:16:19,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 19:16:19,984 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 19:16:20,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 19:16:20,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 19:16:20,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 19:16:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 19:16:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,194 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 19:16:20,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 19:16:20,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692125565] [2022-03-20 19:16:20,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692125565] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:16:20,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:16:20,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 19:16:20,196 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 19:16:20,196 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1160033719] [2022-03-20 19:16:20,196 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1160033719] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:16:20,196 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:16:20,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-03-20 19:16:20,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605853480] [2022-03-20 19:16:20,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 19:16:20,197 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-03-20 19:16:20,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 19:16:20,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-03-20 19:16:20,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-03-20 19:16:20,198 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 19:16:20,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 19:16:20,423 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2022-03-20 19:16:20,424 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-03-20 19:16:20,424 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 29 [2022-03-20 19:16:20,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 19:16:20,425 INFO L225 Difference]: With dead ends: 40 [2022-03-20 19:16:20,425 INFO L226 Difference]: Without dead ends: 38 [2022-03-20 19:16:20,425 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=273, Unknown=0, NotChecked=0, Total=342 [2022-03-20 19:16:20,426 INFO L913 BasicCegarLoop]: 25 mSDtfsCounter, 66 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 19:16:20,426 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 39 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 19:16:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2022-03-20 19:16:20,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2022-03-20 19:16:20,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 25 states have (on average 1.12) internal successors, (28), 25 states have internal predecessors, (28), 7 states have call successors, (7), 6 states have call predecessors, (7), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-20 19:16:20,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2022-03-20 19:16:20,433 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 29 [2022-03-20 19:16:20,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 19:16:20,434 INFO L478 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2022-03-20 19:16:20,434 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.6) internal successors, (16), 7 states have internal predecessors, (16), 3 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-03-20 19:16:20,434 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2022-03-20 19:16:20,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-03-20 19:16:20,435 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 19:16:20,435 INFO L499 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 19:16:20,435 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 19:16:20,435 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 19:16:20,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 19:16:20,436 INFO L85 PathProgramCache]: Analyzing trace with hash -718145150, now seen corresponding path program 1 times [2022-03-20 19:16:20,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 19:16:20,436 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [784455526] [2022-03-20 19:16:20,437 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 19:16:20,437 INFO L85 PathProgramCache]: Analyzing trace with hash -718145150, now seen corresponding path program 2 times [2022-03-20 19:16:20,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 19:16:20,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584109261] [2022-03-20 19:16:20,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 19:16:20,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 19:16:20,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 19:16:20,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-20 19:16:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-03-20 19:16:20,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-03-20 19:16:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-03-20 19:16:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 19:16:20,648 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-20 19:16:20,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 19:16:20,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584109261] [2022-03-20 19:16:20,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584109261] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:16:20,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:16:20,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 19:16:20,649 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 19:16:20,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [784455526] [2022-03-20 19:16:20,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [784455526] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 19:16:20,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 19:16:20,649 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-20 19:16:20,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280853455] [2022-03-20 19:16:20,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 19:16:20,650 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-03-20 19:16:20,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 19:16:20,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-03-20 19:16:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-03-20 19:16:20,651 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 19:16:20,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 19:16:20,910 INFO L93 Difference]: Finished difference Result 38 states and 41 transitions. [2022-03-20 19:16:20,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-20 19:16:20,911 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 36 [2022-03-20 19:16:20,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 19:16:20,911 INFO L225 Difference]: With dead ends: 38 [2022-03-20 19:16:20,911 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 19:16:20,912 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2022-03-20 19:16:20,915 INFO L913 BasicCegarLoop]: 26 mSDtfsCounter, 61 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 19:16:20,920 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 40 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 249 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 19:16:20,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 19:16:20,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 19:16:20,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-20 19:16:20,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 19:16:20,922 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 36 [2022-03-20 19:16:20,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 19:16:20,922 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 19:16:20,922 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 8 states have internal predecessors, (21), 4 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-03-20 19:16:20,922 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 19:16:20,922 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 19:16:20,924 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 19:16:20,925 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-20 19:16:20,926 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 19:16:21,030 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 5) no Hoare annotation was computed. [2022-03-20 19:16:21,030 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 5) no Hoare annotation was computed. [2022-03-20 19:16:21,030 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 5) no Hoare annotation was computed. [2022-03-20 19:16:21,030 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 7 9) the Hoare annotation is: true [2022-03-20 19:16:21,030 INFO L885 garLoopResultBuilder]: At program point L8(line 8) the Hoare annotation is: true [2022-03-20 19:16:21,030 INFO L885 garLoopResultBuilder]: At program point L8-2(lines 7 9) the Hoare annotation is: true [2022-03-20 19:16:21,030 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 7 9) the Hoare annotation is: true [2022-03-20 19:16:21,031 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 25 37) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)))) [2022-03-20 19:16:21,031 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 16 51) the Hoare annotation is: true [2022-03-20 19:16:21,031 INFO L878 garLoopResultBuilder]: At program point L25-2(lines 25 37) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)))) [2022-03-20 19:16:21,031 INFO L878 garLoopResultBuilder]: At program point L19(line 19) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2022-03-20 19:16:21,031 INFO L878 garLoopResultBuilder]: At program point L19-1(line 19) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2022-03-20 19:16:21,031 INFO L878 garLoopResultBuilder]: At program point L46(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= |main_#t~mem15| 0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)) (<= 0 |main_#t~mem16|))) [2022-03-20 19:16:21,036 INFO L878 garLoopResultBuilder]: At program point L46-1(line 46) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= |main_#t~mem15| 0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)) (<= 0 |main_#t~mem16|))) [2022-03-20 19:16:21,036 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 16 51) the Hoare annotation is: true [2022-03-20 19:16:21,036 INFO L878 garLoopResultBuilder]: At program point L42(line 42) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)))) [2022-03-20 19:16:21,036 INFO L878 garLoopResultBuilder]: At program point L42-1(line 42) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)))) [2022-03-20 19:16:21,036 INFO L878 garLoopResultBuilder]: At program point mainENTRY(lines 16 51) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2022-03-20 19:16:21,036 INFO L878 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2022-03-20 19:16:21,036 INFO L878 garLoopResultBuilder]: At program point L20-1(line 20) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |main_#t~malloc6.base|)) [2022-03-20 19:16:21,037 INFO L878 garLoopResultBuilder]: At program point L43(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= |main_#t~mem12| 0) (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)) (= |main_#t~mem13| 0))) [2022-03-20 19:16:21,037 INFO L878 garLoopResultBuilder]: At program point L45-2(lines 45 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)))) [2022-03-20 19:16:21,037 INFO L878 garLoopResultBuilder]: At program point L43-1(line 43) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= |main_#t~mem12| 0) (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)) (= |main_#t~mem13| 0))) [2022-03-20 19:16:21,037 INFO L878 garLoopResultBuilder]: At program point L45-3(lines 45 47) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)))) [2022-03-20 19:16:21,037 INFO L885 garLoopResultBuilder]: At program point L45-4(lines 45 47) the Hoare annotation is: true [2022-03-20 19:16:21,037 INFO L878 garLoopResultBuilder]: At program point L35(lines 35 36) the Hoare annotation is: (let ((.cse0 ((as const (Array Int Int)) 0))) (and (= (select |#memory_int| main_~a~0.base) .cse0) (= .cse0 (select |#memory_int| |main_#t~malloc6.base|)))) [2022-03-20 19:16:21,037 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 19:16:21,037 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 19:16:21,038 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 19:16:21,038 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 19:16:21,038 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 19:16:21,038 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 19:16:21,038 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 19:16:21,038 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 10 12) the Hoare annotation is: true [2022-03-20 19:16:21,040 INFO L878 garLoopResultBuilder]: At program point L11(line 11) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 19:16:21,040 INFO L878 garLoopResultBuilder]: At program point L11-1(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 19:16:21,041 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 19:16:21,041 INFO L878 garLoopResultBuilder]: At program point L11-3(lines 10 12) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 19:16:21,041 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 11) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 19:16:21,041 INFO L878 garLoopResultBuilder]: At program point #Ultimate.meminitENTRY(line -1) the Hoare annotation is: (= |#memory_int| |old(#memory_int)|) [2022-03-20 19:16:21,041 INFO L878 garLoopResultBuilder]: At program point #Ultimate.meminitEXIT(line -1) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |#Ultimate.meminit_#ptr.base|)) [2022-03-20 19:16:21,041 INFO L878 garLoopResultBuilder]: At program point #Ultimate.meminitFINAL(line -1) the Hoare annotation is: (= ((as const (Array Int Int)) 0) (select |#memory_int| |#Ultimate.meminit_#ptr.base|)) [2022-03-20 19:16:21,043 INFO L719 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-03-20 19:16:21,044 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 19:16:21,052 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.IllegalArgumentException: unknown symbol (const Int (Array Int Int)) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:259) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:132) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:168) at de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:132) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:394) at de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder.RCFGBacktranslator.translateExpression(RCFGBacktranslator.java:1) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpression(ModelTranslationContainer.java:106) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ModelTranslationContainer.translateExpressionToString(ModelTranslationContainer.java:89) at de.uni_freiburg.informatik.ultimate.core.lib.results.InvariantResult.getLongDescription(InvariantResult.java:65) at de.uni_freiburg.informatik.ultimate.core.coreplugin.services.ResultService.reportResult(ResultService.java:86) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResultReporter.reportResult(CegarLoopResultReporter.java:140) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.createInvariantResults(TraceAbstractionStarter.java:474) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:193) 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) [2022-03-20 19:16:21,057 INFO L158 Benchmark]: Toolchain (without parser) took 2030.68ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 122.7MB in the beginning and 156.6MB in the end (delta: -33.9MB). Peak memory consumption was 2.7MB. Max. memory is 8.0GB. [2022-03-20 19:16:21,057 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 174.1MB. Free memory was 139.5MB in the beginning and 139.4MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 19:16:21,058 INFO L158 Benchmark]: CACSL2BoogieTranslator took 181.11ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 122.4MB in the beginning and 186.0MB in the end (delta: -63.6MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. [2022-03-20 19:16:21,058 INFO L158 Benchmark]: Boogie Preprocessor took 31.10ms. Allocated memory is still 209.7MB. Free memory was 186.0MB in the beginning and 184.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 19:16:21,058 INFO L158 Benchmark]: RCFGBuilder took 219.35ms. Allocated memory is still 209.7MB. Free memory was 183.9MB in the beginning and 172.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-20 19:16:21,059 INFO L158 Benchmark]: TraceAbstraction took 1595.59ms. Allocated memory is still 209.7MB. Free memory was 171.9MB in the beginning and 156.6MB in the end (delta: 15.3MB). Peak memory consumption was 16.3MB. Max. memory is 8.0GB. [2022-03-20 19:16:21,060 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 174.1MB. Free memory was 139.5MB in the beginning and 139.4MB in the end (delta: 136.3kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 181.11ms. Allocated memory was 174.1MB in the beginning and 209.7MB in the end (delta: 35.7MB). Free memory was 122.4MB in the beginning and 186.0MB in the end (delta: -63.6MB). Peak memory consumption was 11.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.10ms. Allocated memory is still 209.7MB. Free memory was 186.0MB in the beginning and 184.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 219.35ms. Allocated memory is still 209.7MB. Free memory was 183.9MB in the beginning and 172.4MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 1595.59ms. Allocated memory is still 209.7MB. Free memory was 171.9MB in the beginning and 156.6MB in the end (delta: 15.3MB). Peak memory consumption was 16.3MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 11]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 42 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 163 mSDsluCounter, 117 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 30 mSDsCounter, 77 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 518 IncrementalHoareTripleChecker+Invalid, 595 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 77 mSolverCounterUnsat, 87 mSDtfsCounter, 518 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 69 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=0, InterpolantAutomatonStates: 28, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 39 LocationsWithAnnotation, 68 PreInvPairs, 95 NumberOfFragments, 251 HoareAnnotationTreeSize, 68 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 39 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ExceptionOrErrorResult: IllegalArgumentException: unknown symbol (const Int (Array Int Int)) de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: IllegalArgumentException: unknown symbol (const Int (Array Int Int)): de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.boogie.Term2Expression.translate(Term2Expression.java:259) RESULT: Ultimate could not prove your program: Toolchain returned no result. [2022-03-20 19:16:21,086 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...