/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/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:37:37,580 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:37:37,582 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:37:37,617 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 03:37:37,617 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 03:37:37,618 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 03:37:37,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 03:37:37,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 03:37:37,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 03:37:37,626 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 03:37:37,627 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 03:37:37,628 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 03:37:37,628 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 03:37:37,629 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 03:37:37,630 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 03:37:37,632 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 03:37:37,633 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 03:37:37,633 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 03:37:37,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 03:37:37,638 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 03:37:37,640 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 03:37:37,640 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 03:37:37,641 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 03:37:37,641 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 03:37:37,642 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 03:37:37,647 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 03:37:37,652 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:37:37,652 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:37:37,653 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:37:37,654 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:37:37,662 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:37:37,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:37:37,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:37:37,664 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:37:37,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:37:37,664 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:37:37,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:37:37,664 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:37:37,664 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:37:37,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:37:37,665 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:37:37,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:37:37,665 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:37:37,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:37:37,665 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:37:37,665 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:37:37,666 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:37:37,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:37:37,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:37:37,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:37:37,666 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:37:37,666 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:37:37,666 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:37:37,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:37:37,873 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:37:37,875 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:37:37,875 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:37:37,876 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:37:37,877 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2022-03-20 03:37:37,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a0f204a2/ae5a2919306448c3b8ab3cab47c8f69f/FLAGd1821f30b [2022-03-20 03:37:38,314 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:37:38,315 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_build.i.p+nlh-reducer.c [2022-03-20 03:37:38,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a0f204a2/ae5a2919306448c3b8ab3cab47c8f69f/FLAGd1821f30b [2022-03-20 03:37:38,344 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3a0f204a2/ae5a2919306448c3b8ab3cab47c8f69f [2022-03-20 03:37:38,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:37:38,347 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:37:38,348 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:37:38,348 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:37:38,351 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:37:38,351 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,352 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5710bee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38, skipping insertion in model container [2022-03-20 03:37:38,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,356 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:37:38,394 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:37:38,683 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-invgen/id_build.i.p+nlh-reducer.c[32736,32749] [2022-03-20 03:37:38,689 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-invgen/id_build.i.p+nlh-reducer.c[33038,33051] [2022-03-20 03:37:38,732 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:37:38,740 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:37:38,826 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-invgen/id_build.i.p+nlh-reducer.c[32736,32749] [2022-03-20 03:37:38,830 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-invgen/id_build.i.p+nlh-reducer.c[33038,33051] [2022-03-20 03:37:38,861 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:37:38,870 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:37:38,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38 WrapperNode [2022-03-20 03:37:38,871 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:37:38,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:37:38,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:37:38,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:37:38,880 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,880 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,893 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,893 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,915 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,937 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:37:38,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:37:38,950 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:37:38,950 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:37:38,956 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (1/1) ... [2022-03-20 03:37:38,971 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:37:38,979 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:37:38,999 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 03:37:39,019 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 03:37:39,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:37:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:37:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:37:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-20 03:37:39,044 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:37:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:37:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:37:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:37:39,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:37:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-20 03:37:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:37:39,045 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 03:37:39,046 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:37:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:37:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:37:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:37:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:37:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:37:39,047 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:37:39,154 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:37:39,156 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:37:39,849 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:37:39,855 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:37:39,856 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-03-20 03:37:39,857 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:37:39 BoogieIcfgContainer [2022-03-20 03:37:39,857 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:37:39,858 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:37:39,858 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:37:39,858 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:37:39,861 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:37:39" (1/1) ... [2022-03-20 03:37:39,862 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:37:39,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:37:39 BasicIcfg [2022-03-20 03:37:39,911 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:37:39,912 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:37:39,912 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:37:39,914 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:37:39,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:37:38" (1/4) ... [2022-03-20 03:37:39,915 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e02c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:37:39, skipping insertion in model container [2022-03-20 03:37:39,915 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:37:38" (2/4) ... [2022-03-20 03:37:39,916 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e02c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:37:39, skipping insertion in model container [2022-03-20 03:37:39,916 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:37:39" (3/4) ... [2022-03-20 03:37:39,917 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@129e02c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:37:39, skipping insertion in model container [2022-03-20 03:37:39,917 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:37:39" (4/4) ... [2022-03-20 03:37:39,918 INFO L111 eAbstractionObserver]: Analyzing ICFG id_build.i.p+nlh-reducer.cJordan [2022-03-20 03:37:39,925 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:37:39,925 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-03-20 03:37:39,956 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:37:39,960 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, 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 03:37:39,960 INFO L341 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-03-20 03:37:39,978 INFO L276 IsEmpty]: Start isEmpty. Operand has 256 states, 249 states have (on average 1.9558232931726907) internal successors, (487), 251 states have internal predecessors, (487), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-20 03:37:39,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-03-20 03:37:39,996 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:37:39,996 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:37:39,997 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:37:40,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:37:40,004 INFO L85 PathProgramCache]: Analyzing trace with hash -2074136825, now seen corresponding path program 1 times [2022-03-20 03:37:40,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:37:40,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563820463] [2022-03-20 03:37:40,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:37:40,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:37:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:37:40,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:37:40,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:37:40,495 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 03:37:40,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:37:40,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563820463] [2022-03-20 03:37:40,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563820463] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:37:40,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:37:40,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 03:37:40,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629278046] [2022-03-20 03:37:40,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:37:40,503 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 03:37:40,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:37:40,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 03:37:40,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:37:40,529 INFO L87 Difference]: Start difference. First operand has 256 states, 249 states have (on average 1.9558232931726907) internal successors, (487), 251 states have internal predecessors, (487), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:37:41,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:37:41,393 INFO L93 Difference]: Finished difference Result 267 states and 501 transitions. [2022-03-20 03:37:41,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 03:37:41,395 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 141 [2022-03-20 03:37:41,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:37:41,410 INFO L225 Difference]: With dead ends: 267 [2022-03-20 03:37:41,410 INFO L226 Difference]: Without dead ends: 257 [2022-03-20 03:37:41,412 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-20 03:37:41,414 INFO L913 BasicCegarLoop]: 132 mSDtfsCounter, 1061 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 1180 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1061 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 1199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-03-20 03:37:41,415 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [1061 Valid, 157 Invalid, 1199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1180 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-03-20 03:37:41,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-03-20 03:37:41,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 250. [2022-03-20 03:37:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 246 states have (on average 1.1544715447154472) internal successors, (284), 246 states have internal predecessors, (284), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:37:41,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 287 transitions. [2022-03-20 03:37:41,446 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 287 transitions. Word has length 141 [2022-03-20 03:37:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:37:41,446 INFO L478 AbstractCegarLoop]: Abstraction has 250 states and 287 transitions. [2022-03-20 03:37:41,447 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.0) internal successors, (138), 5 states have internal predecessors, (138), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:37:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 287 transitions. [2022-03-20 03:37:41,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-03-20 03:37:41,449 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:37:41,449 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:37:41,449 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:37:41,449 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:37:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:37:41,450 INFO L85 PathProgramCache]: Analyzing trace with hash 1866133804, now seen corresponding path program 1 times [2022-03-20 03:37:41,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:37:41,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1392500523] [2022-03-20 03:37:41,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:37:41,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:37:41,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:37:41,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:37:41,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:37:41,568 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 03:37:41,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:37:41,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1392500523] [2022-03-20 03:37:41,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1392500523] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:37:41,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:37:41,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 03:37:41,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535283687] [2022-03-20 03:37:41,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:37:41,570 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 03:37:41,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:37:41,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 03:37:41,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 03:37:41,570 INFO L87 Difference]: Start difference. First operand 250 states and 287 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:37:42,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:37:42,041 INFO L93 Difference]: Finished difference Result 260 states and 300 transitions. [2022-03-20 03:37:42,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-03-20 03:37:42,041 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 143 [2022-03-20 03:37:42,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:37:42,042 INFO L225 Difference]: With dead ends: 260 [2022-03-20 03:37:42,042 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 03:37:42,042 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-03-20 03:37:42,043 INFO L913 BasicCegarLoop]: 129 mSDtfsCounter, 561 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 561 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-03-20 03:37:42,043 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [561 Valid, 146 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-03-20 03:37:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 03:37:42,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 03:37:42,044 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 03:37:42,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 03:37:42,044 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 143 [2022-03-20 03:37:42,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:37:42,044 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 03:37:42,044 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:37:42,045 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 03:37:42,045 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 03:37:42,047 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 2 remaining) [2022-03-20 03:37:42,047 INFO L788 garLoopResultBuilder]: Registering result SAFE for location mainErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 2 remaining) [2022-03-20 03:37:42,047 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:37:42,049 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 03:37:42,050 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:37:42,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:37:42 BasicIcfg [2022-03-20 03:37:42,053 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:37:42,053 INFO L158 Benchmark]: Toolchain (without parser) took 3706.36ms. Allocated memory was 189.8MB in the beginning and 237.0MB in the end (delta: 47.2MB). Free memory was 140.4MB in the beginning and 174.1MB in the end (delta: -33.7MB). Peak memory consumption was 15.7MB. Max. memory is 8.0GB. [2022-03-20 03:37:42,054 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 158.4MB in the beginning and 158.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:37:42,054 INFO L158 Benchmark]: CACSL2BoogieTranslator took 523.33ms. Allocated memory was 189.8MB in the beginning and 237.0MB in the end (delta: 47.2MB). Free memory was 140.3MB in the beginning and 192.2MB in the end (delta: -52.0MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. [2022-03-20 03:37:42,054 INFO L158 Benchmark]: Boogie Preprocessor took 77.99ms. Allocated memory is still 237.0MB. Free memory was 192.2MB in the beginning and 188.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. [2022-03-20 03:37:42,055 INFO L158 Benchmark]: RCFGBuilder took 906.92ms. Allocated memory is still 237.0MB. Free memory was 188.1MB in the beginning and 106.8MB in the end (delta: 81.3MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. [2022-03-20 03:37:42,055 INFO L158 Benchmark]: IcfgTransformer took 53.07ms. Allocated memory is still 237.0MB. Free memory was 106.8MB in the beginning and 100.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. [2022-03-20 03:37:42,055 INFO L158 Benchmark]: TraceAbstraction took 2140.98ms. Allocated memory is still 237.0MB. Free memory was 100.0MB in the beginning and 174.1MB in the end (delta: -74.2MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:37:42,057 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 189.8MB. Free memory was 158.4MB in the beginning and 158.3MB in the end (delta: 146.8kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 523.33ms. Allocated memory was 189.8MB in the beginning and 237.0MB in the end (delta: 47.2MB). Free memory was 140.3MB in the beginning and 192.2MB in the end (delta: -52.0MB). Peak memory consumption was 18.0MB. Max. memory is 8.0GB. * Boogie Preprocessor took 77.99ms. Allocated memory is still 237.0MB. Free memory was 192.2MB in the beginning and 188.1MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 8.0GB. * RCFGBuilder took 906.92ms. Allocated memory is still 237.0MB. Free memory was 188.1MB in the beginning and 106.8MB in the end (delta: 81.3MB). Peak memory consumption was 80.7MB. Max. memory is 8.0GB. * IcfgTransformer took 53.07ms. Allocated memory is still 237.0MB. Free memory was 106.8MB in the beginning and 100.5MB in the end (delta: 6.3MB). Peak memory consumption was 6.3MB. Max. memory is 8.0GB. * TraceAbstraction took 2140.98ms. Allocated memory is still 237.0MB. Free memory was 100.0MB in the beginning and 174.1MB in the end (delta: -74.2MB). There was no memory consumed. 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: 1763]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1780]: 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 3 procedures, 256 locations, 2 error locations. Started 1 CEGAR loops. OverallTime: 2.1s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1622 SdHoareTripleChecker+Valid, 1.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1622 mSDsluCounter, 303 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 42 mSDsCounter, 34 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1890 IncrementalHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 34 mSolverCounterUnsat, 261 mSDtfsCounter, 1890 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=256occurred in iteration=0, InterpolantAutomatonStates: 16, 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, 2 MinimizatonAttempts, 7 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 284 NumberOfCodeBlocks, 284 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 282 ConstructedInterpolants, 0 QuantifiedInterpolants, 686 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, 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 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-03-20 03:37:42,083 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...