/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-zilu/benchmark17_conjunctive.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 13:33:10,121 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 13:33:10,123 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 13:33:10,160 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 13:33:10,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 13:33:10,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 13:33:10,162 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 13:33:10,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 13:33:10,164 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 13:33:10,164 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 13:33:10,165 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 13:33:10,166 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 13:33:10,166 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 13:33:10,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 13:33:10,169 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 13:33:10,175 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 13:33:10,175 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 13:33:10,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 13:33:10,183 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 13:33:10,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 13:33:10,187 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 13:33:10,189 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 13:33:10,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 13:33:10,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 13:33:10,190 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 13:33:10,192 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-20 13:33:10,192 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-20 13:33:10,192 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-20 13:33:10,192 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-20 13:33:10,193 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-20 13:33:10,193 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-20 13:33:10,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-20 13:33:10,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-20 13:33:10,194 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-20 13:33:10,194 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-20 13:33:10,195 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-20 13:33:10,195 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-20 13:33:10,196 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-20 13:33:10,196 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-20 13:33:10,196 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 13:33:10,196 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 13:33:10,199 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 13:33:10,199 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 13:33:10,210 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 13:33:10,211 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 13:33:10,215 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 13:33:10,215 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 13:33:10,215 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 13:33:10,215 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 13:33:10,215 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 13:33:10,215 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 13:33:10,215 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 13:33:10,216 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 13:33:10,216 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 13:33:10,216 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 13:33:10,216 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 13:33:10,216 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 13:33:10,216 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 13:33:10,216 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:33:10,217 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 13:33:10,217 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-03-20 13:33:10,217 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 13:33:10,400 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 13:33:10,426 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 13:33:10,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 13:33:10,428 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 13:33:10,429 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 13:33:10,430 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark17_conjunctive.i [2022-03-20 13:33:10,470 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49fa2309/eda53cf08014488ba318626afc00ef5e/FLAGa72652267 [2022-03-20 13:33:10,794 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 13:33:10,795 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark17_conjunctive.i [2022-03-20 13:33:10,798 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49fa2309/eda53cf08014488ba318626afc00ef5e/FLAGa72652267 [2022-03-20 13:33:10,808 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c49fa2309/eda53cf08014488ba318626afc00ef5e [2022-03-20 13:33:10,810 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 13:33:10,811 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-20 13:33:10,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 13:33:10,812 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 13:33:10,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 13:33:10,814 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:33:10" (1/1) ... [2022-03-20 13:33:10,815 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@a020405 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:10, skipping insertion in model container [2022-03-20 13:33:10,815 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 01:33:10" (1/1) ... [2022-03-20 13:33:10,819 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 13:33:10,827 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 13:33:10,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark17_conjunctive.i[873,886] [2022-03-20 13:33:10,997 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:33:11,002 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 13:33:11,009 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark17_conjunctive.i[873,886] [2022-03-20 13:33:11,011 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 13:33:11,018 INFO L208 MainTranslator]: Completed translation [2022-03-20 13:33:11,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11 WrapperNode [2022-03-20 13:33:11,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 13:33:11,019 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 13:33:11,019 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 13:33:11,019 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 13:33:11,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,029 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,032 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,034 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,034 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,035 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 13:33:11,036 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 13:33:11,036 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 13:33:11,036 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 13:33:11,037 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (1/1) ... [2022-03-20 13:33:11,053 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 13:33:11,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 13:33:11,077 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 13:33:11,080 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 13:33:11,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 13:33:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 13:33:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 13:33:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 13:33:11,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 13:33:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 13:33:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 13:33:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 13:33:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 13:33:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 13:33:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 13:33:11,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 13:33:11,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 13:33:11,147 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 13:33:11,148 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 13:33:11,282 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 13:33:11,299 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 13:33:11,299 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 13:33:11,301 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:33:11 BoogieIcfgContainer [2022-03-20 13:33:11,301 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 13:33:11,302 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 13:33:11,302 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 13:33:11,305 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 13:33:11,305 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 01:33:10" (1/3) ... [2022-03-20 13:33:11,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c4a1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:33:11, skipping insertion in model container [2022-03-20 13:33:11,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 01:33:11" (2/3) ... [2022-03-20 13:33:11,306 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@43c4a1a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 01:33:11, skipping insertion in model container [2022-03-20 13:33:11,306 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 01:33:11" (3/3) ... [2022-03-20 13:33:11,307 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark17_conjunctive.i [2022-03-20 13:33:11,310 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-20 13:33:11,310 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 13:33:11,352 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 13:33:11,358 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 13:33:11,359 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 13:33:11,371 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 13:33:11,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 13:33:11,389 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 13:33:11,390 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 13:33:11,390 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 13:33:11,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 13:33:11,394 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 1 times [2022-03-20 13:33:11,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-20 13:33:11,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [28541038] [2022-03-20 13:33:11,409 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-20 13:33:11,409 INFO L85 PathProgramCache]: Analyzing trace with hash -304977768, now seen corresponding path program 2 times [2022-03-20 13:33:11,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 13:33:11,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151756181] [2022-03-20 13:33:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 13:33:11,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 13:33:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:33:11,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 13:33:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 13:33:11,657 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 13:33:11,658 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 13:33:11,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [151756181] [2022-03-20 13:33:11,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [151756181] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:33:11,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:33:11,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 13:33:11,661 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-20 13:33:11,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [28541038] [2022-03-20 13:33:11,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [28541038] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 13:33:11,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 13:33:11,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-03-20 13:33:11,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809869505] [2022-03-20 13:33:11,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 13:33:11,665 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-20 13:33:11,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-20 13:33:11,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-20 13:33:11,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-03-20 13:33:11,686 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 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 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 13:33:11,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 13:33:11,824 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-03-20 13:33:11,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-20 13:33:11,828 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 12 [2022-03-20 13:33:11,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 13:33:11,832 INFO L225 Difference]: With dead ends: 32 [2022-03-20 13:33:11,832 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 13:33:11,835 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-03-20 13:33:11,839 INFO L913 BasicCegarLoop]: 16 mSDtfsCounter, 19 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-20 13:33:11,840 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 43 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-20 13:33:11,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 13:33:11,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 13:33:11,856 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 13:33:11,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 13:33:11,858 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-03-20 13:33:11,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 13:33:11,858 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 13:33:11,858 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 5 states have internal predecessors, (8), 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 13:33:11,858 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 13:33:11,858 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 13:33:11,860 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 13:33:11,861 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 13:33:11,863 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 13:33:11,932 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 11) no Hoare annotation was computed. [2022-03-20 13:33:11,933 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 11) no Hoare annotation was computed. [2022-03-20 13:33:11,933 INFO L882 garLoopResultBuilder]: For program point L11-1(line 11) no Hoare annotation was computed. [2022-03-20 13:33:11,933 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 30) the Hoare annotation is: true [2022-03-20 13:33:11,933 INFO L878 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: (and (<= main_~i~0 main_~k~0) (<= main_~n~0 main_~k~0)) [2022-03-20 13:33:11,934 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 19 30) the Hoare annotation is: true [2022-03-20 13:33:11,934 INFO L885 garLoopResultBuilder]: At program point L23(line 23) the Hoare annotation is: true [2022-03-20 13:33:11,934 INFO L878 garLoopResultBuilder]: At program point L24-2(lines 24 27) the Hoare annotation is: (<= main_~i~0 main_~k~0) [2022-03-20 13:33:11,935 INFO L878 garLoopResultBuilder]: At program point L24-3(lines 24 27) the Hoare annotation is: (and (<= main_~i~0 main_~k~0) (<= main_~n~0 main_~k~0)) [2022-03-20 13:33:11,935 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 19 30) the Hoare annotation is: true [2022-03-20 13:33:11,935 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-20 13:33:11,939 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 13:33:11,940 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-20 13:33:11,940 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-20 13:33:11,940 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 13:33:11,940 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 13:33:11,940 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-20 13:33:11,940 INFO L878 garLoopResultBuilder]: At program point L16(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 13:33:11,940 INFO L878 garLoopResultBuilder]: At program point L15(lines 15 17) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 13:33:11,941 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-03-20 13:33:11,941 INFO L878 garLoopResultBuilder]: At program point L15-2(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 13:33:11,941 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 14 18) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| 0) (not (= __VERIFIER_assert_~cond 0))) [2022-03-20 13:33:11,941 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2022-03-20 13:33:11,943 INFO L719 BasicCegarLoop]: Path program histogram: [2] [2022-03-20 13:33:11,944 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 13:33:11,955 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 01:33:11 BoogieIcfgContainer [2022-03-20 13:33:11,955 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 13:33:11,956 INFO L158 Benchmark]: Toolchain (without parser) took 1145.01ms. Allocated memory was 194.0MB in the beginning and 233.8MB in the end (delta: 39.8MB). Free memory was 143.3MB in the beginning and 165.0MB in the end (delta: -21.7MB). Peak memory consumption was 18.5MB. Max. memory is 8.0GB. [2022-03-20 13:33:11,956 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory was 159.5MB in the beginning and 159.3MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 13:33:11,957 INFO L158 Benchmark]: CACSL2BoogieTranslator took 206.89ms. Allocated memory was 194.0MB in the beginning and 233.8MB in the end (delta: 39.8MB). Free memory was 143.0MB in the beginning and 210.6MB in the end (delta: -67.6MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. [2022-03-20 13:33:11,957 INFO L158 Benchmark]: Boogie Preprocessor took 16.41ms. Allocated memory is still 233.8MB. Free memory was 210.6MB in the beginning and 209.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-20 13:33:11,957 INFO L158 Benchmark]: RCFGBuilder took 264.87ms. Allocated memory is still 233.8MB. Free memory was 209.0MB in the beginning and 198.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-03-20 13:33:11,958 INFO L158 Benchmark]: TraceAbstraction took 653.30ms. Allocated memory is still 233.8MB. Free memory was 198.0MB in the beginning and 165.0MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. Max. memory is 8.0GB. [2022-03-20 13:33:11,959 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 194.0MB. Free memory was 159.5MB in the beginning and 159.3MB in the end (delta: 136.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 206.89ms. Allocated memory was 194.0MB in the beginning and 233.8MB in the end (delta: 39.8MB). Free memory was 143.0MB in the beginning and 210.6MB in the end (delta: -67.6MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 16.41ms. Allocated memory is still 233.8MB. Free memory was 210.6MB in the beginning and 209.0MB in the end (delta: 1.6MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 264.87ms. Allocated memory is still 233.8MB. Free memory was 209.0MB in the beginning and 198.5MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * TraceAbstraction took 653.30ms. Allocated memory is still 233.8MB. Free memory was 198.0MB in the beginning and 165.0MB in the end (delta: 33.0MB). Peak memory consumption was 32.5MB. 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: 16]: 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 5 procedures, 23 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 19 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 19 mSDsluCounter, 43 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 27 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 51 IncrementalHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 16 mSDtfsCounter, 51 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 7, 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 20 LocationsWithAnnotation, 26 PreInvPairs, 36 NumberOfFragments, 65 HoareAnnotationTreeSize, 26 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 20 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s 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 - InvariantResult [Line: 24]: Loop Invariant Derived loop invariant: i <= k - ProcedureContractResult [Line: 19]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 14]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == 0 || !(cond == 0) RESULT: Ultimate proved your program to be correct! [2022-03-20 13:33:11,989 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...