/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf -i ../../../trunk/examples/svcomp/nla-digbench/freire1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-d966a43 [2022-01-31 13:25:06,442 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-01-31 13:25:06,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-01-31 13:25:06,494 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-01-31 13:25:06,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-01-31 13:25:06,503 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-01-31 13:25:06,505 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-01-31 13:25:06,506 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-01-31 13:25:06,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-01-31 13:25:06,517 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-01-31 13:25:06,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-01-31 13:25:06,524 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-01-31 13:25:06,524 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-01-31 13:25:06,526 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-01-31 13:25:06,527 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-01-31 13:25:06,530 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-01-31 13:25:06,530 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-01-31 13:25:06,532 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-01-31 13:25:06,534 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-01-31 13:25:06,539 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-01-31 13:25:06,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-01-31 13:25:06,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-01-31 13:25:06,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-01-31 13:25:06,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-01-31 13:25:06,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-01-31 13:25:06,551 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-01-31 13:25:06,552 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-01-31 13:25:06,553 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-01-31 13:25:06,554 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-01-31 13:25:06,554 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-01-31 13:25:06,554 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-01-31 13:25:06,555 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-01-31 13:25:06,555 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-01-31 13:25:06,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-01-31 13:25:06,556 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-01-31 13:25:06,556 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-01-31 13:25:06,557 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-01-31 13:25:06,567 INFO L113 SettingsManager]: Loading preferences was successful [2022-01-31 13:25:06,567 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-01-31 13:25:06,568 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-01-31 13:25:06,569 INFO L138 SettingsManager]: * sizeof long=4 [2022-01-31 13:25:06,569 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-01-31 13:25:06,569 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-01-31 13:25:06,569 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-01-31 13:25:06,569 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-01-31 13:25:06,569 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-01-31 13:25:06,569 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-01-31 13:25:06,570 INFO L138 SettingsManager]: * sizeof long double=12 [2022-01-31 13:25:06,570 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-01-31 13:25:06,570 INFO L138 SettingsManager]: * Use constant arrays=true [2022-01-31 13:25:06,570 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-01-31 13:25:06,570 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-01-31 13:25:06,570 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-01-31 13:25:06,571 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-01-31 13:25:06,571 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-01-31 13:25:06,571 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 13:25:06,571 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-01-31 13:25:06,571 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-01-31 13:25:06,572 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-01-31 13:25:06,572 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_JORDAN WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-01-31 13:25:06,811 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-01-31 13:25:06,832 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-01-31 13:25:06,834 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-01-31 13:25:06,834 INFO L271 PluginConnector]: Initializing CDTParser... [2022-01-31 13:25:06,835 INFO L275 PluginConnector]: CDTParser initialized [2022-01-31 13:25:06,836 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench/freire1.c [2022-01-31 13:25:06,892 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e10dbf1/d0635002d12341729ac3bd26fe0793ed/FLAGee9430656 [2022-01-31 13:25:07,286 INFO L306 CDTParser]: Found 1 translation units. [2022-01-31 13:25:07,286 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c [2022-01-31 13:25:07,301 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e10dbf1/d0635002d12341729ac3bd26fe0793ed/FLAGee9430656 [2022-01-31 13:25:07,686 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/45e10dbf1/d0635002d12341729ac3bd26fe0793ed [2022-01-31 13:25:07,689 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-01-31 13:25:07,690 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-01-31 13:25:07,694 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-01-31 13:25:07,694 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-01-31 13:25:07,697 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-01-31 13:25:07,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59201bbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07, skipping insertion in model container [2022-01-31 13:25:07,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,704 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-01-31 13:25:07,716 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-01-31 13:25:07,852 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2022-01-31 13:25:07,888 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 13:25:07,893 INFO L203 MainTranslator]: Completed pre-run [2022-01-31 13:25:07,910 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench/freire1.c[712,725] [2022-01-31 13:25:07,918 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-01-31 13:25:07,929 INFO L208 MainTranslator]: Completed translation [2022-01-31 13:25:07,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07 WrapperNode [2022-01-31 13:25:07,929 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-01-31 13:25:07,930 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-01-31 13:25:07,930 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-01-31 13:25:07,930 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-01-31 13:25:07,939 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,940 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,945 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,946 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,960 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,963 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,964 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,966 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-01-31 13:25:07,967 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-01-31 13:25:07,967 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-01-31 13:25:07,967 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-01-31 13:25:07,968 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (1/1) ... [2022-01-31 13:25:07,972 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-01-31 13:25:07,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-01-31 13:25:07,996 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) [2022-01-31 13:25:08,000 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 [2022-01-31 13:25:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-01-31 13:25:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-01-31 13:25:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-01-31 13:25:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-01-31 13:25:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-01-31 13:25:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-01-31 13:25:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-01-31 13:25:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-01-31 13:25:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-01-31 13:25:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-01-31 13:25:08,081 INFO L234 CfgBuilder]: Building ICFG [2022-01-31 13:25:08,083 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-01-31 13:25:08,222 INFO L275 CfgBuilder]: Performing block encoding [2022-01-31 13:25:08,236 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-01-31 13:25:08,236 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-01-31 13:25:08,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:25:08 BoogieIcfgContainer [2022-01-31 13:25:08,237 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-01-31 13:25:08,238 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-01-31 13:25:08,238 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-01-31 13:25:08,243 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-01-31 13:25:08,250 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:25:08" (1/1) ... [2022-01-31 13:25:08,287 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 01:25:08 BasicIcfg [2022-01-31 13:25:08,288 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-01-31 13:25:08,289 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-01-31 13:25:08,289 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-01-31 13:25:08,292 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-01-31 13:25:08,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.01 01:25:07" (1/4) ... [2022-01-31 13:25:08,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9413ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:25:08, skipping insertion in model container [2022-01-31 13:25:08,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.01 01:25:07" (2/4) ... [2022-01-31 13:25:08,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9413ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.01 01:25:08, skipping insertion in model container [2022-01-31 13:25:08,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.01 01:25:08" (3/4) ... [2022-01-31 13:25:08,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a9413ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 01:25:08, skipping insertion in model container [2022-01-31 13:25:08,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 31.01 01:25:08" (4/4) ... [2022-01-31 13:25:08,294 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1.cJordan [2022-01-31 13:25:08,298 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-01-31 13:25:08,298 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-01-31 13:25:08,376 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-01-31 13:25:08,382 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=ForwardPredicates, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2022-01-31 13:25:08,383 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-01-31 13:25:08,413 INFO L276 IsEmpty]: Start isEmpty. Operand has 21 states, 12 states have (on average 1.4166666666666667) internal successors, (17), 13 states have internal predecessors, (17), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-01-31 13:25:08,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-01-31 13:25:08,419 INFO L506 BasicCegarLoop]: Found error trace [2022-01-31 13:25:08,420 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-01-31 13:25:08,420 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-01-31 13:25:08,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-01-31 13:25:08,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1229966674, now seen corresponding path program 1 times [2022-01-31 13:25:08,436 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-01-31 13:25:08,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773785557] [2022-01-31 13:25:08,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-01-31 13:25:08,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-01-31 13:25:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 13:25:08,535 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-01-31 13:25:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-01-31 13:25:08,576 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-01-31 13:25:08,578 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-01-31 13:25:08,579 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-01-31 13:25:08,581 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-01-31 13:25:08,585 INFO L732 BasicCegarLoop]: Path program histogram: [1] [2022-01-31 13:25:08,587 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-01-31 13:25:08,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 31.01 01:25:08 BasicIcfg [2022-01-31 13:25:08,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-01-31 13:25:08,605 INFO L158 Benchmark]: Toolchain (without parser) took 915.24ms. Allocated memory is still 182.5MB. Free memory was 133.8MB in the beginning and 134.5MB in the end (delta: -780.6kB). There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 13:25:08,606 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 182.5MB. Free memory is still 150.0MB. There was no memory consumed. Max. memory is 8.0GB. [2022-01-31 13:25:08,606 INFO L158 Benchmark]: CACSL2BoogieTranslator took 235.78ms. Allocated memory is still 182.5MB. Free memory was 133.5MB in the beginning and 160.2MB in the end (delta: -26.7MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. [2022-01-31 13:25:08,608 INFO L158 Benchmark]: Boogie Preprocessor took 35.97ms. Allocated memory is still 182.5MB. Free memory was 160.2MB in the beginning and 158.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-01-31 13:25:08,608 INFO L158 Benchmark]: RCFGBuilder took 270.82ms. Allocated memory is still 182.5MB. Free memory was 158.7MB in the beginning and 148.7MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-01-31 13:25:08,612 INFO L158 Benchmark]: IcfgTransformer took 49.48ms. Allocated memory is still 182.5MB. Free memory was 148.7MB in the beginning and 147.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-01-31 13:25:08,613 INFO L158 Benchmark]: TraceAbstraction took 315.38ms. Allocated memory is still 182.5MB. Free memory was 147.1MB in the beginning and 134.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. Max. memory is 8.0GB. [2022-01-31 13:25:08,617 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 182.5MB. Free memory is still 150.0MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 235.78ms. Allocated memory is still 182.5MB. Free memory was 133.5MB in the beginning and 160.2MB in the end (delta: -26.7MB). Peak memory consumption was 10.2MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.97ms. Allocated memory is still 182.5MB. Free memory was 160.2MB in the beginning and 158.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 270.82ms. Allocated memory is still 182.5MB. Free memory was 158.7MB in the beginning and 148.7MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 49.48ms. Allocated memory is still 182.5MB. Free memory was 148.7MB in the beginning and 147.7MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 315.38ms. Allocated memory is still 182.5MB. Free memory was 147.1MB in the beginning and 134.5MB in the end (delta: 12.6MB). Peak memory consumption was 12.6MB. 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 - UnprovableResult [Line: 19]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of to_int at line 32, overapproximation of someBinaryArithmeticDOUBLEoperation at line 28. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] x = a / 2.0 [L29] r = 0 VAL [a=50, r=0] [L31] COND TRUE 1 VAL [a=50, r=0] [L32] CALL __VERIFIER_assert((int)(r*r - a - r + 2*x) == 0) VAL [\old(cond)=0] [L17] 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, 21 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 could not prove your program: unable to determine feasibility of some traces [2022-01-31 13:25:08,663 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...