/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/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/loop-invgen/id_trans.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-18 21:57:33,057 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 21:57:33,058 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 21:57:33,100 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-18 21:57:33,126 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 21:57:33,128 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 21:57:33,129 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 21:57:33,131 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 21:57:33,132 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 21:57:33,132 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 21:57:33,134 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 21:57:33,139 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 21:57:33,140 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 21:57:33,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 21:57:33,142 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 21:57:33,142 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 21:57:33,159 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 21:57:33,161 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-18 21:57:33,167 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 21:57:33,168 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 21:57:33,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 21:57:33,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-18 21:57:33,203 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 21:57:33,204 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 21:57:33,205 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-18 21:57:33,205 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-18 21:57:33,206 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-18 21:57:33,206 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-18 21:57:33,206 INFO L138 SettingsManager]: * Use SBE=true [2022-03-18 21:57:33,206 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 21:57:33,206 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 21:57:33,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 21:57:33,207 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 21:57:33,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 21:57:33,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:57:33,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 21:57:33,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-18 21:57:33,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-18 21:57:33,208 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-18 21:57:33,208 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-18 21:57:33,208 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 21:57:33,209 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-18 21:57:33,209 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-18 21:57:33,209 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-18 21:57:33,209 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 21:57:33,357 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 21:57:33,369 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 21:57:33,370 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 21:57:33,371 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 21:57:33,371 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 21:57:33,372 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/id_trans.i [2022-03-18 21:57:33,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1307421/af3fb93fee0a4b85b393d524b2e1eda9/FLAG1a9faee63 [2022-03-18 21:57:33,799 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 21:57:33,806 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/id_trans.i [2022-03-18 21:57:33,811 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1307421/af3fb93fee0a4b85b393d524b2e1eda9/FLAG1a9faee63 [2022-03-18 21:57:34,192 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ac1307421/af3fb93fee0a4b85b393d524b2e1eda9 [2022-03-18 21:57:34,194 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 21:57:34,195 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-18 21:57:34,196 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 21:57:34,196 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 21:57:34,198 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 21:57:34,199 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,199 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@551421c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34, skipping insertion in model container [2022-03-18 21:57:34,200 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,204 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 21:57:34,212 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 21:57:34,332 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_trans.i[893,906] [2022-03-18 21:57:34,340 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:57:34,346 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 21:57:34,354 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_trans.i[893,906] [2022-03-18 21:57:34,356 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 21:57:34,365 INFO L208 MainTranslator]: Completed translation [2022-03-18 21:57:34,365 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34 WrapperNode [2022-03-18 21:57:34,365 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 21:57:34,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 21:57:34,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 21:57:34,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 21:57:34,373 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,373 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,385 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 21:57:34,387 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 21:57:34,387 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 21:57:34,387 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 21:57:34,388 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 21:57:34,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 21:57:34,415 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) [2022-03-18 21:57:34,421 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 [2022-03-18 21:57:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 21:57:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 21:57:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 21:57:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 21:57:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 21:57:34,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 21:57:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 21:57:34,445 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 21:57:34,446 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 21:57:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 21:57:34,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 21:57:34,513 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 21:57:34,514 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 21:57:34,610 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 21:57:34,614 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 21:57:34,614 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 21:57:34,616 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:57:34 BoogieIcfgContainer [2022-03-18 21:57:34,616 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 21:57:34,616 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-18 21:57:34,616 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-18 21:57:34,617 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-18 21:57:34,619 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:57:34" (1/1) ... [2022-03-18 21:57:34,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:57:34 BasicIcfg [2022-03-18 21:57:34,631 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-18 21:57:34,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 21:57:34,632 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 21:57:34,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 21:57:34,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 09:57:34" (1/4) ... [2022-03-18 21:57:34,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcf7fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:57:34, skipping insertion in model container [2022-03-18 21:57:34,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 09:57:34" (2/4) ... [2022-03-18 21:57:34,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcf7fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 09:57:34, skipping insertion in model container [2022-03-18 21:57:34,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 09:57:34" (3/4) ... [2022-03-18 21:57:34,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4bcf7fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:57:34, skipping insertion in model container [2022-03-18 21:57:34,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 18.03 09:57:34" (4/4) ... [2022-03-18 21:57:34,636 INFO L111 eAbstractionObserver]: Analyzing ICFG id_trans.iqvasr [2022-03-18 21:57:34,639 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-18 21:57:34,640 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 21:57:34,669 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 21:57:34,673 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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 [2022-03-18 21:57:34,674 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 21:57:34,684 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 21:57:34,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-18 21:57:34,687 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:34,687 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:34,688 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:34,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:34,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1124237314, now seen corresponding path program 1 times [2022-03-18 21:57:34,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:34,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671962693] [2022-03-18 21:57:34,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:34,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:34,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:34,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:34,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:34,863 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:34,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671962693] [2022-03-18 21:57:34,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671962693] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:57:34,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:57:34,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:57:34,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515635733] [2022-03-18 21:57:34,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:57:34,868 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:57:34,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:34,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:57:34,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:57:34,887 INFO L87 Difference]: Start difference. First operand has 24 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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) [2022-03-18 21:57:35,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:35,029 INFO L93 Difference]: Finished difference Result 47 states and 62 transitions. [2022-03-18 21:57:35,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 21:57:35,035 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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 [2022-03-18 21:57:35,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:35,040 INFO L225 Difference]: With dead ends: 47 [2022-03-18 21:57:35,040 INFO L226 Difference]: Without dead ends: 23 [2022-03-18 21:57:35,043 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:57:35,049 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 24 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:35,050 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 42 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-18 21:57:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-03-18 21:57:35,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-03-18 21:57:35,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 13 states have (on average 1.0769230769230769) internal successors, (14), 13 states have internal predecessors, (14), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 21:57:35,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2022-03-18 21:57:35,079 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 12 [2022-03-18 21:57:35,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:35,080 INFO L478 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2022-03-18 21:57:35,080 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.3333333333333333) internal successors, (8), 4 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) [2022-03-18 21:57:35,080 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2022-03-18 21:57:35,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-18 21:57:35,081 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:35,081 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:35,081 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 21:57:35,081 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:35,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:35,082 INFO L85 PathProgramCache]: Analyzing trace with hash -74729474, now seen corresponding path program 1 times [2022-03-18 21:57:35,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:35,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685285116] [2022-03-18 21:57:35,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:35,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:35,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 21:57:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-03-18 21:57:35,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 21:57:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-18 21:57:35,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 21:57:35,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685285116] [2022-03-18 21:57:35,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685285116] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 21:57:35,145 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 21:57:35,145 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-18 21:57:35,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255498901] [2022-03-18 21:57:35,146 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 21:57:35,147 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-18 21:57:35,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-18 21:57:35,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-18 21:57:35,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-18 21:57:35,148 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 21:57:35,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 21:57:35,221 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2022-03-18 21:57:35,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-03-18 21:57:35,222 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-03-18 21:57:35,222 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 21:57:35,223 INFO L225 Difference]: With dead ends: 29 [2022-03-18 21:57:35,223 INFO L226 Difference]: Without dead ends: 27 [2022-03-18 21:57:35,223 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2022-03-18 21:57:35,224 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 12 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 21:57:35,225 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 35 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 21:57:35,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-03-18 21:57:35,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-03-18 21:57:35,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 16 states have (on average 1.0625) internal successors, (17), 16 states have internal predecessors, (17), 6 states have call successors, (6), 5 states have call predecessors, (6), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 21:57:35,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2022-03-18 21:57:35,230 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 17 [2022-03-18 21:57:35,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 21:57:35,230 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2022-03-18 21:57:35,231 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-18 21:57:35,231 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2022-03-18 21:57:35,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-18 21:57:35,231 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 21:57:35,231 INFO L500 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 21:57:35,231 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-18 21:57:35,232 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 21:57:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 21:57:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash -353153412, now seen corresponding path program 1 times [2022-03-18 21:57:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 21:57:35,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777900356] [2022-03-18 21:57:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 21:57:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 21:57:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 21:57:35,253 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-18 21:57:35,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-18 21:57:35,301 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-18 21:57:35,301 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-18 21:57:35,302 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 21:57:35,303 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-18 21:57:35,306 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-03-18 21:57:35,308 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 21:57:35,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 09:57:35 BasicIcfg [2022-03-18 21:57:35,322 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 21:57:35,322 INFO L158 Benchmark]: Toolchain (without parser) took 1127.01ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 166.4MB in the beginning and 204.6MB in the end (delta: -38.2MB). Peak memory consumption was 60.8MB. Max. memory is 8.0GB. [2022-03-18 21:57:35,323 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 195.0MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 21:57:35,323 INFO L158 Benchmark]: CACSL2BoogieTranslator took 169.50ms. Allocated memory is still 195.0MB. Free memory was 166.1MB in the beginning and 166.5MB in the end (delta: -386.8kB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-03-18 21:57:35,323 INFO L158 Benchmark]: Boogie Preprocessor took 20.34ms. Allocated memory is still 195.0MB. Free memory was 166.5MB in the beginning and 165.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 21:57:35,324 INFO L158 Benchmark]: RCFGBuilder took 228.52ms. Allocated memory is still 195.0MB. Free memory was 165.1MB in the beginning and 154.2MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-18 21:57:35,324 INFO L158 Benchmark]: IcfgTransformer took 14.60ms. Allocated memory is still 195.0MB. Free memory was 154.2MB in the beginning and 152.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-18 21:57:35,324 INFO L158 Benchmark]: TraceAbstraction took 689.97ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 152.5MB in the beginning and 204.6MB in the end (delta: -52.1MB). Peak memory consumption was 48.6MB. Max. memory is 8.0GB. [2022-03-18 21:57:35,326 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 195.0MB. Free memory is still 153.3MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 169.50ms. Allocated memory is still 195.0MB. Free memory was 166.1MB in the beginning and 166.5MB in the end (delta: -386.8kB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 20.34ms. Allocated memory is still 195.0MB. Free memory was 166.5MB in the beginning and 165.1MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 228.52ms. Allocated memory is still 195.0MB. Free memory was 165.1MB in the beginning and 154.2MB in the end (delta: 10.8MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 14.60ms. Allocated memory is still 195.0MB. Free memory was 154.2MB in the beginning and 152.8MB in the end (delta: 1.4MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 689.97ms. Allocated memory was 195.0MB in the beginning and 234.9MB in the end (delta: 39.8MB). Free memory was 152.5MB in the beginning and 204.6MB in the end (delta: -52.1MB). Peak memory consumption was 48.6MB. 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 - CounterExampleResult [Line: 19]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L25] int idBitLength, material_length, nlen; [L26] int j, k; [L27] nlen = __VERIFIER_nondet_int() [L28] idBitLength = __VERIFIER_nondet_int() [L29] material_length = __VERIFIER_nondet_int() [L30] COND FALSE !(!( nlen == idBitLength / 32 )) [L31] j = 0 VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L31] COND TRUE (j < idBitLength / 8) && (j < material_length) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L32] CALL __VERIFIER_assert( 0 <= j) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L32] RET __VERIFIER_assert( 0 <= j) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L33] CALL __VERIFIER_assert( j < material_length ) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L33] RET __VERIFIER_assert( j < material_length ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L34] CALL __VERIFIER_assert( 0 <= j/4 ) VAL [\old(cond)=1] [L18] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L34] RET __VERIFIER_assert( 0 <= j/4 ) VAL [idBitLength=9, j=0, material_length=1, nlen=0] [L35] CALL __VERIFIER_assert( j/4 < nlen) VAL [\old(cond)=0] [L18] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L19] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 3, TraceHistogramMax: 4, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 36 mSDsluCounter, 77 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 38 mSDsCounter, 31 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 124 IncrementalHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 31 mSolverCounterUnsat, 39 mSDtfsCounter, 124 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred in iteration=2, InterpolantAutomatonStates: 14, 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, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 56 NumberOfCodeBlocks, 56 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 27 ConstructedInterpolants, 0 QuantifiedInterpolants, 61 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 2/2 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 RESULT: Ultimate proved your program to be incorrect! [2022-03-18 21:57:35,354 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...