/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/loops/nec11.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-34549b5 [2022-04-06 09:11:29,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-06 09:11:29,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-06 09:11:29,803 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-06 09:11:29,804 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-06 09:11:29,805 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-06 09:11:29,807 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-06 09:11:29,810 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-06 09:11:29,811 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-06 09:11:29,815 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-06 09:11:29,816 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-06 09:11:29,817 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-06 09:11:29,817 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-06 09:11:29,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-06 09:11:29,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-06 09:11:29,823 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-06 09:11:29,824 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-06 09:11:29,824 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-06 09:11:29,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-06 09:11:29,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-06 09:11:29,827 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-06 09:11:29,828 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-06 09:11:29,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-06 09:11:29,830 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-06 09:11:29,831 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-06 09:11:29,839 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-06 09:11:29,845 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-06 09:11:29,845 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-06 09:11:29,852 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-06 09:11:29,852 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-04-06 09:11:29,877 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-06 09:11:29,878 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-06 09:11:29,878 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-04-06 09:11:29,878 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-04-06 09:11:29,879 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-04-06 09:11:29,880 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-04-06 09:11:29,880 INFO L138 SettingsManager]: * Use SBE=true [2022-04-06 09:11:29,880 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-06 09:11:29,880 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-06 09:11:29,881 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-06 09:11:29,881 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-06 09:11:29,881 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-06 09:11:29,881 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-06 09:11:29,881 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-06 09:11:29,881 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-06 09:11:29,881 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-06 09:11:29,881 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-06 09:11:29,882 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-06 09:11:29,882 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-06 09:11:29,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 09:11:29,882 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-06 09:11:29,882 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-04-06 09:11:29,882 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-04-06 09:11:29,882 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-06 09:11:29,882 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-04-06 09:11:29,883 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-06 09:11:29,883 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-04-06 09:11:29,883 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-04-06 09:11:29,884 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-06 09:11:29,884 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-06 09:11:30,091 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-06 09:11:30,114 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-06 09:11:30,116 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-06 09:11:30,117 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-06 09:11:30,118 INFO L275 PluginConnector]: CDTParser initialized [2022-04-06 09:11:30,119 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/nec11.c [2022-04-06 09:11:30,167 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f4646ea/324c90aed2b34d2ca79adbde455dc205/FLAG72258cf3d [2022-04-06 09:11:30,576 INFO L306 CDTParser]: Found 1 translation units. [2022-04-06 09:11:30,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c [2022-04-06 09:11:30,582 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f4646ea/324c90aed2b34d2ca79adbde455dc205/FLAG72258cf3d [2022-04-06 09:11:30,592 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f4646ea/324c90aed2b34d2ca79adbde455dc205 [2022-04-06 09:11:30,594 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-06 09:11:30,596 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-06 09:11:30,597 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-06 09:11:30,597 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-06 09:11:30,602 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-06 09:11:30,602 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,603 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7731d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30, skipping insertion in model container [2022-04-06 09:11:30,604 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-06 09:11:30,619 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-06 09:11:30,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c[317,330] [2022-04-06 09:11:30,775 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 09:11:30,784 INFO L203 MainTranslator]: Completed pre-run [2022-04-06 09:11:30,794 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops/nec11.c[317,330] [2022-04-06 09:11:30,796 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-06 09:11:30,805 INFO L208 MainTranslator]: Completed translation [2022-04-06 09:11:30,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30 WrapperNode [2022-04-06 09:11:30,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-06 09:11:30,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-06 09:11:30,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-06 09:11:30,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-06 09:11:30,818 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,818 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,823 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,823 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,826 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,829 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,831 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-06 09:11:30,832 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-06 09:11:30,832 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-06 09:11:30,832 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-06 09:11:30,835 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (1/1) ... [2022-04-06 09:11:30,844 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-06 09:11:30,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-06 09:11:30,862 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) [2022-04-06 09:11:30,865 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 [2022-04-06 09:11:30,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-06 09:11:30,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-06 09:11:30,891 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-06 09:11:30,891 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-06 09:11:30,891 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-06 09:11:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-06 09:11:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-06 09:11:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-06 09:11:30,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-06 09:11:30,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-06 09:11:30,949 INFO L234 CfgBuilder]: Building ICFG [2022-04-06 09:11:30,951 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-06 09:11:31,020 INFO L275 CfgBuilder]: Performing block encoding [2022-04-06 09:11:31,025 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-06 09:11:31,025 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-06 09:11:31,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:11:31 BoogieIcfgContainer [2022-04-06 09:11:31,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-06 09:11:31,027 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-06 09:11:31,027 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-06 09:11:31,028 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-06 09:11:31,031 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:11:31" (1/1) ... [2022-04-06 09:11:31,033 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_QVASR [2022-04-06 09:11:31,045 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 09:11:31 BasicIcfg [2022-04-06 09:11:31,045 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-06 09:11:31,046 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-06 09:11:31,047 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-06 09:11:31,049 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-06 09:11:31,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.04 09:11:30" (1/4) ... [2022-04-06 09:11:31,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42adf47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:11:31, skipping insertion in model container [2022-04-06 09:11:31,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.04 09:11:30" (2/4) ... [2022-04-06 09:11:31,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42adf47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.04 09:11:31, skipping insertion in model container [2022-04-06 09:11:31,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.04 09:11:31" (3/4) ... [2022-04-06 09:11:31,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42adf47d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 09:11:31, skipping insertion in model container [2022-04-06 09:11:31,051 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 06.04 09:11:31" (4/4) ... [2022-04-06 09:11:31,052 INFO L111 eAbstractionObserver]: Analyzing ICFG nec11.cqvasr [2022-04-06 09:11:31,057 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-04-06 09:11:31,057 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-06 09:11:31,097 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-06 09:11:31,110 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 [2022-04-06 09:11:31,111 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-06 09:11:31,126 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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) [2022-04-06 09:11:31,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 09:11:31,151 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:11:31,151 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:11:31,152 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:11:31,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:11:31,156 INFO L85 PathProgramCache]: Analyzing trace with hash 447419557, now seen corresponding path program 1 times [2022-04-06 09:11:31,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:11:31,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [420454722] [2022-04-06 09:11:31,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:11:31,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:11:31,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:11:31,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-06 09:11:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-06 09:11:31,326 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-06 09:11:31,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-06 09:11:31,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [420454722] [2022-04-06 09:11:31,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [420454722] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-06 09:11:31,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-06 09:11:31,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-06 09:11:31,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451727660] [2022-04-06 09:11:31,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-06 09:11:31,334 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-06 09:11:31,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-06 09:11:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-06 09:11:31,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-06 09:11:31,364 INFO L87 Difference]: Start difference. First operand has 21 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 14 states have internal predecessors, (18), 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 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-06 09:11:31,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-06 09:11:31,398 INFO L93 Difference]: Finished difference Result 33 states and 37 transitions. [2022-04-06 09:11:31,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-06 09:11:31,400 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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 11 [2022-04-06 09:11:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-06 09:11:31,406 INFO L225 Difference]: With dead ends: 33 [2022-04-06 09:11:31,406 INFO L226 Difference]: Without dead ends: 14 [2022-04-06 09:11:31,409 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 [2022-04-06 09:11:31,412 INFO L913 BasicCegarLoop]: 21 mSDtfsCounter, 13 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-06 09:11:31,413 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 24 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-06 09:11:31,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2022-04-06 09:11:31,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2022-04-06 09:11:31,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 9 states have internal predecessors, (11), 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) [2022-04-06 09:11:31,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 15 transitions. [2022-04-06 09:11:31,441 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 15 transitions. Word has length 11 [2022-04-06 09:11:31,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-06 09:11:31,441 INFO L478 AbstractCegarLoop]: Abstraction has 14 states and 15 transitions. [2022-04-06 09:11:31,442 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 2 states have internal predecessors, (7), 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) [2022-04-06 09:11:31,442 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 15 transitions. [2022-04-06 09:11:31,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-04-06 09:11:31,442 INFO L491 BasicCegarLoop]: Found error trace [2022-04-06 09:11:31,443 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-06 09:11:31,443 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-06 09:11:31,443 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-06 09:11:31,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-06 09:11:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 448343078, now seen corresponding path program 1 times [2022-04-06 09:11:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-06 09:11:31,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474790918] [2022-04-06 09:11:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-06 09:11:31,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-06 09:11:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 09:11:31,474 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-06 09:11:31,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-06 09:11:31,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-06 09:11:31,516 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-04-06 09:11:31,517 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-06 09:11:31,519 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-06 09:11:31,527 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-06 09:11:31,530 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-04-06 09:11:31,558 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.04 09:11:31 BasicIcfg [2022-04-06 09:11:31,559 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-06 09:11:31,560 INFO L158 Benchmark]: Toolchain (without parser) took 963.23ms. Allocated memory was 185.6MB in the beginning and 233.8MB in the end (delta: 48.2MB). Free memory was 125.7MB in the beginning and 167.9MB in the end (delta: -42.2MB). Peak memory consumption was 5.9MB. Max. memory is 8.0GB. [2022-04-06 09:11:31,561 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory was 141.9MB in the beginning and 141.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-06 09:11:31,563 INFO L158 Benchmark]: CACSL2BoogieTranslator took 209.05ms. Allocated memory was 185.6MB in the beginning and 233.8MB in the end (delta: 48.2MB). Free memory was 125.6MB in the beginning and 206.7MB in the end (delta: -81.1MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-04-06 09:11:31,564 INFO L158 Benchmark]: Boogie Preprocessor took 23.83ms. Allocated memory is still 233.8MB. Free memory was 206.7MB in the beginning and 205.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-06 09:11:31,567 INFO L158 Benchmark]: RCFGBuilder took 194.70ms. Allocated memory is still 233.8MB. Free memory was 205.0MB in the beginning and 194.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-06 09:11:31,567 INFO L158 Benchmark]: IcfgTransformer took 17.52ms. Allocated memory is still 233.8MB. Free memory was 194.6MB in the beginning and 193.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-06 09:11:31,567 INFO L158 Benchmark]: TraceAbstraction took 512.32ms. Allocated memory is still 233.8MB. Free memory was 193.0MB in the beginning and 167.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. Max. memory is 8.0GB. [2022-04-06 09:11:31,574 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 185.6MB. Free memory was 141.9MB in the beginning and 141.7MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 209.05ms. Allocated memory was 185.6MB in the beginning and 233.8MB in the end (delta: 48.2MB). Free memory was 125.6MB in the beginning and 206.7MB in the end (delta: -81.1MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.83ms. Allocated memory is still 233.8MB. Free memory was 206.7MB in the beginning and 205.0MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 194.70ms. Allocated memory is still 233.8MB. Free memory was 205.0MB in the beginning and 194.6MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 17.52ms. Allocated memory is still 233.8MB. Free memory was 194.6MB in the beginning and 193.6MB in the end (delta: 1.1MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 512.32ms. Allocated memory is still 233.8MB. Free memory was 193.0MB in the beginning and 167.9MB in the end (delta: 25.2MB). Peak memory consumption was 25.2MB. 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: 7]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L15] int a[5]; [L16] int len=0; [L17] _Bool c=__VERIFIER_nondet_bool(); [L18] int i; VAL [c=0, len=0] [L21] COND FALSE !(\read(c)) VAL [c=0, len=0] [L30] CALL __VERIFIER_assert(len==5) VAL [\old(cond)=0] [L6] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L7] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 14 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 13 mSDsluCounter, 24 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3 IncrementalHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 21 mSDtfsCounter, 3 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 22 NumberOfCodeBlocks, 22 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 10 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 RESULT: Ultimate proved your program to be incorrect! [2022-04-06 09:11:31,606 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...