/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-zilu/benchmark14_linear.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 09:06:22,476 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 09:06:22,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 09:06:22,521 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-20 09:06:22,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-20 09:06:22,523 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-20 09:06:22,525 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-20 09:06:22,528 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-20 09:06:22,529 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-20 09:06:22,534 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-20 09:06:22,534 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-20 09:06:22,536 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-20 09:06:22,536 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-20 09:06:22,538 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-20 09:06:22,539 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-20 09:06:22,541 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-20 09:06:22,542 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-20 09:06:22,543 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-20 09:06:22,545 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-20 09:06:22,550 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-20 09:06:22,551 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-20 09:06:22,552 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-20 09:06:22,553 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-20 09:06:22,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-20 09:06:22,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-20 09:06:22,561 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-20 09:06:22,568 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 09:06:22,568 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 09:06:22,570 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 09:06:22,570 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-20 09:06:22,597 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 09:06:22,598 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 09:06:22,598 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-20 09:06:22,598 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-20 09:06:22,599 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-20 09:06:22,599 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-20 09:06:22,600 INFO L138 SettingsManager]: * Use SBE=true [2022-03-20 09:06:22,600 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 09:06:22,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 09:06:22,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 09:06:22,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 09:06:22,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 09:06:22,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 09:06:22,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 09:06:22,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-20 09:06:22,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-20 09:06:22,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 09:06:22,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-20 09:06:22,602 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-20 09:06:22,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-20 09:06:22,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-20 09:06:22,604 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 09:06:22,604 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 09:06:22,797 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 09:06:22,830 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 09:06:22,832 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 09:06:22,833 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 09:06:22,834 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 09:06:22,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-zilu/benchmark14_linear.i [2022-03-20 09:06:22,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead7f8a75/398efd1fd2734af19ca11ee7e6adf939/FLAG5217f5815 [2022-03-20 09:06:23,270 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 09:06:23,271 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark14_linear.i [2022-03-20 09:06:23,276 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead7f8a75/398efd1fd2734af19ca11ee7e6adf939/FLAG5217f5815 [2022-03-20 09:06:23,288 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ead7f8a75/398efd1fd2734af19ca11ee7e6adf939 [2022-03-20 09:06:23,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 09:06:23,291 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 09:06:23,292 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 09:06:23,292 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 09:06:23,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 09:06:23,295 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e88a2e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23, skipping insertion in model container [2022-03-20 09:06:23,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,302 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 09:06:23,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 09:06:23,454 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark14_linear.i[868,881] [2022-03-20 09:06:23,463 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 09:06:23,476 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 09:06:23,487 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-zilu/benchmark14_linear.i[868,881] [2022-03-20 09:06:23,489 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 09:06:23,515 INFO L208 MainTranslator]: Completed translation [2022-03-20 09:06:23,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23 WrapperNode [2022-03-20 09:06:23,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 09:06:23,518 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 09:06:23,518 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 09:06:23,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 09:06:23,528 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,533 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,533 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,545 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 09:06:23,548 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 09:06:23,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 09:06:23,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 09:06:23,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 09:06:23,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 09:06:23,593 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 09:06:23,619 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 09:06:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 09:06:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 09:06:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 09:06:23,634 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 09:06:23,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 09:06:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 09:06:23,635 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-03-20 09:06:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-03-20 09:06:23,636 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 09:06:23,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 09:06:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 09:06:23,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 09:06:23,698 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 09:06:23,700 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 09:06:23,782 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 09:06:23,786 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 09:06:23,787 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 09:06:23,788 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:06:23 BoogieIcfgContainer [2022-03-20 09:06:23,788 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 09:06:23,789 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 09:06:23,789 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 09:06:23,790 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 09:06:23,793 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:06:23" (1/1) ... [2022-03-20 09:06:23,795 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-03-20 09:06:23,966 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:06:23 BasicIcfg [2022-03-20 09:06:23,966 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 09:06:23,968 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 09:06:23,968 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 09:06:23,970 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 09:06:23,970 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 09:06:23" (1/4) ... [2022-03-20 09:06:23,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2349e53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:06:23, skipping insertion in model container [2022-03-20 09:06:23,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 09:06:23" (2/4) ... [2022-03-20 09:06:23,971 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2349e53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 09:06:23, skipping insertion in model container [2022-03-20 09:06:23,971 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 09:06:23" (3/4) ... [2022-03-20 09:06:23,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2349e53e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:06:23, skipping insertion in model container [2022-03-20 09:06:23,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 09:06:23" (4/4) ... [2022-03-20 09:06:23,973 INFO L111 eAbstractionObserver]: Analyzing ICFG benchmark14_linear.iqvasr [2022-03-20 09:06:23,977 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-20 09:06:23,977 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 09:06:24,016 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 09:06:24,023 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 [2022-03-20 09:06:24,023 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 09:06:24,036 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 09:06:24,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 09:06:24,040 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:06:24,040 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:06:24,041 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:06:24,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:06:24,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1809217115, now seen corresponding path program 1 times [2022-03-20 09:06:24,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:06:24,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70996441] [2022-03-20 09:06:24,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:06:24,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:06:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:06:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 09:06:24,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:06:24,197 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 09:06:24,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 09:06:24,198 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70996441] [2022-03-20 09:06:24,199 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70996441] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 09:06:24,199 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 09:06:24,199 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 09:06:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957944641] [2022-03-20 09:06:24,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 09:06:24,207 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 09:06:24,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 09:06:24,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 09:06:24,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 09:06:24,239 INFO L87 Difference]: Start difference. First operand has 20 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:06:24,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 09:06:24,283 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2022-03-20 09:06:24,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 09:06:24,285 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2022-03-20 09:06:24,286 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 09:06:24,292 INFO L225 Difference]: With dead ends: 32 [2022-03-20 09:06:24,292 INFO L226 Difference]: Without dead ends: 13 [2022-03-20 09:06:24,299 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 09:06:24,303 INFO L913 BasicCegarLoop]: 19 mSDtfsCounter, 12 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 09:06:24,304 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 22 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 09:06:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2022-03-20 09:06:24,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2022-03-20 09:06:24,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 8 states have (on average 1.125) internal successors, (9), 8 states have internal predecessors, (9), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:06:24,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2022-03-20 09:06:24,337 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 12 [2022-03-20 09:06:24,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 09:06:24,337 INFO L478 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2022-03-20 09:06:24,338 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 2 states have internal predecessors, (8), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 09:06:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2022-03-20 09:06:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-03-20 09:06:24,339 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 09:06:24,339 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 09:06:24,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 09:06:24,340 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 09:06:24,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 09:06:24,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1810140636, now seen corresponding path program 1 times [2022-03-20 09:06:24,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 09:06:24,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1900094931] [2022-03-20 09:06:24,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 09:06:24,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 09:06:24,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:06:24,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 09:06:24,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 09:06:24,471 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 09:06:24,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 09:06:24,472 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1900094931] [2022-03-20 09:06:24,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1900094931] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 09:06:24,472 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 09:06:24,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-20 09:06:24,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342009681] [2022-03-20 09:06:24,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 09:06:24,474 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-03-20 09:06:24,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 09:06:24,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-03-20 09:06:24,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-03-20 09:06:24,476 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. 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) [2022-03-20 09:06:24,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 09:06:24,540 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2022-03-20 09:06:24,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-20 09:06:24,540 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 [2022-03-20 09:06:24,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 09:06:24,541 INFO L225 Difference]: With dead ends: 13 [2022-03-20 09:06:24,541 INFO L226 Difference]: Without dead ends: 0 [2022-03-20 09:06:24,545 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-03-20 09:06:24,546 INFO L913 BasicCegarLoop]: 8 mSDtfsCounter, 5 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-20 09:06:24,547 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [5 Valid, 25 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 09:06:24,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-20 09:06:24,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-20 09:06:24,552 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 09:06:24,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-20 09:06:24,555 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2022-03-20 09:06:24,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 09:06:24,556 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-20 09:06:24,556 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) [2022-03-20 09:06:24,556 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-20 09:06:24,556 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-20 09:06:24,559 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 09:06:24,559 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 09:06:24,561 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-20 09:06:24,582 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-20 09:06:24,582 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2022-03-20 09:06:24,582 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2022-03-20 09:06:24,582 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-20 09:06:24,582 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-20 09:06:24,582 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2022-03-20 09:06:24,582 INFO L882 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2022-03-20 09:06:24,583 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 19 27) the Hoare annotation is: true [2022-03-20 09:06:24,583 INFO L882 garLoopResultBuilder]: For program point L21(line 21) no Hoare annotation was computed. [2022-03-20 09:06:24,583 INFO L882 garLoopResultBuilder]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2022-03-20 09:06:24,584 INFO L878 garLoopResultBuilder]: At program point L22-2(lines 22 24) the Hoare annotation is: (< 0 (+ main_~i~0 1)) [2022-03-20 09:06:24,584 INFO L882 garLoopResultBuilder]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2022-03-20 09:06:24,584 INFO L878 garLoopResultBuilder]: At program point L22-3(lines 22 24) the Hoare annotation is: (< 0 (+ main_~i~0 1)) [2022-03-20 09:06:24,584 INFO L882 garLoopResultBuilder]: For program point L25(line 25) no Hoare annotation was computed. [2022-03-20 09:06:24,584 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 14 18) the Hoare annotation is: true [2022-03-20 09:06:24,584 INFO L882 garLoopResultBuilder]: For program point L15(lines 15 17) no Hoare annotation was computed. [2022-03-20 09:06:24,584 INFO L882 garLoopResultBuilder]: For program point L16(line 16) no Hoare annotation was computed. [2022-03-20 09:06:24,584 INFO L882 garLoopResultBuilder]: For program point L15-2(lines 14 18) no Hoare annotation was computed. [2022-03-20 09:06:24,584 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 16) no Hoare annotation was computed. [2022-03-20 09:06:24,585 INFO L882 garLoopResultBuilder]: For program point __VERIFIER_assertEXIT(lines 14 18) no Hoare annotation was computed. [2022-03-20 09:06:24,590 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 09:06:24,591 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 09:06:24,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 09:06:24 BasicIcfg [2022-03-20 09:06:24,605 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 09:06:24,605 INFO L158 Benchmark]: Toolchain (without parser) took 1314.19ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 128.9MB in the beginning and 159.8MB in the end (delta: -30.9MB). Peak memory consumption was 13.6MB. Max. memory is 8.0GB. [2022-03-20 09:06:24,606 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 09:06:24,611 INFO L158 Benchmark]: CACSL2BoogieTranslator took 225.09ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 128.8MB in the beginning and 208.5MB in the end (delta: -79.8MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. [2022-03-20 09:06:24,611 INFO L158 Benchmark]: Boogie Preprocessor took 29.43ms. Allocated memory is still 234.9MB. Free memory was 208.0MB in the beginning and 207.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 09:06:24,611 INFO L158 Benchmark]: RCFGBuilder took 239.98ms. Allocated memory is still 234.9MB. Free memory was 206.5MB in the beginning and 196.5MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 09:06:24,612 INFO L158 Benchmark]: IcfgTransformer took 177.08ms. Allocated memory is still 234.9MB. Free memory was 196.5MB in the beginning and 191.2MB in the end (delta: 5.3MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. [2022-03-20 09:06:24,612 INFO L158 Benchmark]: TraceAbstraction took 637.31ms. Allocated memory is still 234.9MB. Free memory was 190.7MB in the beginning and 159.8MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. [2022-03-20 09:06:24,614 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 188.7MB. Free memory is still 145.1MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 225.09ms. Allocated memory was 188.7MB in the beginning and 234.9MB in the end (delta: 46.1MB). Free memory was 128.8MB in the beginning and 208.5MB in the end (delta: -79.8MB). Peak memory consumption was 15.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 29.43ms. Allocated memory is still 234.9MB. Free memory was 208.0MB in the beginning and 207.0MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 8.0GB. * RCFGBuilder took 239.98ms. Allocated memory is still 234.9MB. Free memory was 206.5MB in the beginning and 196.5MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 177.08ms. Allocated memory is still 234.9MB. Free memory was 196.5MB in the beginning and 191.2MB in the end (delta: 5.3MB). Peak memory consumption was 5.2MB. Max. memory is 8.0GB. * TraceAbstraction took 637.31ms. Allocated memory is still 234.9MB. Free memory was 190.7MB in the beginning and 159.8MB in the end (delta: 30.9MB). Peak memory consumption was 30.4MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 16]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 17 mSDsluCounter, 47 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 20 mSDsCounter, 6 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 20 IncrementalHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 6 mSolverCounterUnsat, 27 mSDtfsCounter, 20 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 9, 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: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 21 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 24 NumberOfCodeBlocks, 24 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 22 ConstructedInterpolants, 0 QuantifiedInterpolants, 48 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 1 specifications checked. All of them hold - InvariantResult [Line: 22]: Loop Invariant Derived loop invariant: 0 < i + 1 RESULT: Ultimate proved your program to be correct! [2022-03-20 09:06:24,650 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...