/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/nla-digbench-scaling/freire1_valuebound100.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-05ce600 [2022-02-23 22:57:26,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-02-23 22:57:26,580 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-02-23 22:57:26,614 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-02-23 22:57:26,614 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-02-23 22:57:26,616 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-02-23 22:57:26,618 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-02-23 22:57:26,619 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-02-23 22:57:26,621 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-02-23 22:57:26,624 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-02-23 22:57:26,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-02-23 22:57:26,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-02-23 22:57:26,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-02-23 22:57:26,626 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-02-23 22:57:26,629 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-02-23 22:57:26,631 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-02-23 22:57:26,631 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-02-23 22:57:26,632 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-02-23 22:57:26,633 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-02-23 22:57:26,637 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-02-23 22:57:26,638 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-02-23 22:57:26,639 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-02-23 22:57:26,640 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-02-23 22:57:26,641 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-02-23 22:57:26,645 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-02-23 22:57:26,651 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-02-23 22:57:26,651 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-02-23 22:57:26,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-02-23 22:57:26,652 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-02-23 22:57:26,672 INFO L113 SettingsManager]: Loading preferences was successful [2022-02-23 22:57:26,673 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-02-23 22:57:26,673 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-02-23 22:57:26,673 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-02-23 22:57:26,674 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-02-23 22:57:26,674 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-02-23 22:57:26,674 INFO L138 SettingsManager]: * Use SBE=true [2022-02-23 22:57:26,675 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-02-23 22:57:26,675 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-02-23 22:57:26,675 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-02-23 22:57:26,675 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-02-23 22:57:26,675 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-02-23 22:57:26,675 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Use constant arrays=true [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-02-23 22:57:26,676 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:57:26,676 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-02-23 22:57:26,676 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-02-23 22:57:26,677 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-02-23 22:57:26,677 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-02-23 22:57:26,677 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-02-23 22:57:26,677 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-02-23 22:57:26,678 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-02-23 22:57:26,849 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-02-23 22:57:26,866 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-02-23 22:57:26,867 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-02-23 22:57:26,868 INFO L271 PluginConnector]: Initializing CDTParser... [2022-02-23 22:57:26,869 INFO L275 PluginConnector]: CDTParser initialized [2022-02-23 22:57:26,870 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound100.c [2022-02-23 22:57:26,917 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31140523/1efc26f9835f47d4a187a6ee62501901/FLAGe8ab99ff2 [2022-02-23 22:57:27,318 INFO L306 CDTParser]: Found 1 translation units. [2022-02-23 22:57:27,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound100.c [2022-02-23 22:57:27,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31140523/1efc26f9835f47d4a187a6ee62501901/FLAGe8ab99ff2 [2022-02-23 22:57:27,338 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c31140523/1efc26f9835f47d4a187a6ee62501901 [2022-02-23 22:57:27,339 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-02-23 22:57:27,341 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-02-23 22:57:27,344 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-02-23 22:57:27,344 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-02-23 22:57:27,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-02-23 22:57:27,346 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22272ddd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27, skipping insertion in model container [2022-02-23 22:57:27,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,351 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-02-23 22:57:27,361 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-02-23 22:57:27,499 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-scaling/freire1_valuebound100.c[712,725] [2022-02-23 22:57:27,512 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:57:27,517 INFO L203 MainTranslator]: Completed pre-run [2022-02-23 22:57:27,527 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-scaling/freire1_valuebound100.c[712,725] [2022-02-23 22:57:27,533 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-02-23 22:57:27,541 INFO L208 MainTranslator]: Completed translation [2022-02-23 22:57:27,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27 WrapperNode [2022-02-23 22:57:27,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-02-23 22:57:27,544 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-02-23 22:57:27,545 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-02-23 22:57:27,545 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-02-23 22:57:27,552 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,568 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,571 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-02-23 22:57:27,576 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-02-23 22:57:27,576 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-02-23 22:57:27,576 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-02-23 22:57:27,577 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-02-23 22:57:27,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-02-23 22:57:27,598 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) [2022-02-23 22:57:27,616 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 [2022-02-23 22:57:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-02-23 22:57:27,626 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-02-23 22:57:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-02-23 22:57:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-02-23 22:57:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-02-23 22:57:27,627 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-02-23 22:57:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-02-23 22:57:27,627 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-02-23 22:57:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-02-23 22:57:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-02-23 22:57:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-02-23 22:57:27,628 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-02-23 22:57:27,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-02-23 22:57:27,674 INFO L234 CfgBuilder]: Building ICFG [2022-02-23 22:57:27,675 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-02-23 22:57:27,782 INFO L275 CfgBuilder]: Performing block encoding [2022-02-23 22:57:27,785 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-02-23 22:57:27,786 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-02-23 22:57:27,787 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:27 BoogieIcfgContainer [2022-02-23 22:57:27,787 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-02-23 22:57:27,787 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-02-23 22:57:27,787 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-02-23 22:57:27,788 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-02-23 22:57:27,790 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:27" (1/1) ... [2022-02-23 22:57:27,805 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:57:27 BasicIcfg [2022-02-23 22:57:27,805 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-02-23 22:57:27,806 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-02-23 22:57:27,806 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-02-23 22:57:27,808 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-02-23 22:57:27,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 10:57:27" (1/4) ... [2022-02-23 22:57:27,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1913b8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:27, skipping insertion in model container [2022-02-23 22:57:27,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 10:57:27" (2/4) ... [2022-02-23 22:57:27,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1913b8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 10:57:27, skipping insertion in model container [2022-02-23 22:57:27,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 10:57:27" (3/4) ... [2022-02-23 22:57:27,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1913b8c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:57:27, skipping insertion in model container [2022-02-23 22:57:27,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 23.02 10:57:27" (4/4) ... [2022-02-23 22:57:27,809 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound100.cqvasr [2022-02-23 22:57:27,813 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-02-23 22:57:27,813 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-02-23 22:57:27,858 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-02-23 22:57:27,863 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2022-02-23 22:57:27,863 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-02-23 22:57:27,872 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-02-23 22:57:27,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 22:57:27,875 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:57:27,876 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:57:27,876 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:57:27,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:57:27,879 INFO L85 PathProgramCache]: Analyzing trace with hash 409333534, now seen corresponding path program 1 times [2022-02-23 22:57:27,886 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:57:27,887 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [30458353] [2022-02-23 22:57:27,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:57:27,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:57:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:57:28,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-02-23 22:57:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:57:28,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-02-23 22:57:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-02-23 22:57:28,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-02-23 22:57:28,039 INFO L144 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-02-23 22:57:28,039 INFO L338 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [30458353] [2022-02-23 22:57:28,040 INFO L165 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [30458353] provided 1 perfect and 0 imperfect interpolant sequences [2022-02-23 22:57:28,040 INFO L191 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-02-23 22:57:28,040 INFO L204 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-02-23 22:57:28,041 INFO L118 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952894779] [2022-02-23 22:57:28,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-02-23 22:57:28,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-02-23 22:57:28,046 INFO L108 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-02-23 22:57:28,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-02-23 22:57:28,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:57:28,069 INFO L87 Difference]: Start difference. First operand has 27 states, 16 states have (on average 1.375) internal successors, (22), 17 states have internal predecessors, (22), 5 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 22:57:28,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-02-23 22:57:28,125 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2022-02-23 22:57:28,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-02-23 22:57:28,127 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 17 [2022-02-23 22:57:28,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-02-23 22:57:28,131 INFO L225 Difference]: With dead ends: 45 [2022-02-23 22:57:28,131 INFO L226 Difference]: Without dead ends: 22 [2022-02-23 22:57:28,134 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-02-23 22:57:28,137 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 15 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-02-23 22:57:28,138 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-02-23 22:57:28,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-02-23 22:57:28,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-02-23 22:57:28,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 13 states have (on average 1.1538461538461537) internal successors, (15), 14 states have internal predecessors, (15), 5 states have call successors, (5), 4 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-02-23 22:57:28,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-02-23 22:57:28,164 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-02-23 22:57:28,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-02-23 22:57:28,165 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-02-23 22:57:28,165 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 3 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-02-23 22:57:28,165 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-02-23 22:57:28,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-02-23 22:57:28,166 INFO L506 BasicCegarLoop]: Found error trace [2022-02-23 22:57:28,166 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-02-23 22:57:28,166 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-02-23 22:57:28,167 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-02-23 22:57:28,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-02-23 22:57:28,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1396244096, now seen corresponding path program 1 times [2022-02-23 22:57:28,167 INFO L126 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-02-23 22:57:28,168 INFO L338 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206798390] [2022-02-23 22:57:28,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-02-23 22:57:28,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-02-23 22:57:28,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 22:57:28,198 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-02-23 22:57:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-02-23 22:57:28,232 INFO L138 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-02-23 22:57:28,232 INFO L628 BasicCegarLoop]: Counterexample is feasible [2022-02-23 22:57:28,233 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-02-23 22:57:28,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-02-23 22:57:28,237 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1] [2022-02-23 22:57:28,240 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-02-23 22:57:28,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 10:57:28 BasicIcfg [2022-02-23 22:57:28,258 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-02-23 22:57:28,258 INFO L158 Benchmark]: Toolchain (without parser) took 916.85ms. Allocated memory is still 182.5MB. Free memory was 126.3MB in the beginning and 113.4MB in the end (delta: 12.9MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-02-23 22:57:28,259 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 142.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-02-23 22:57:28,259 INFO L158 Benchmark]: CACSL2BoogieTranslator took 198.93ms. Allocated memory is still 182.5MB. Free memory was 126.1MB in the beginning and 152.3MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-02-23 22:57:28,262 INFO L158 Benchmark]: Boogie Preprocessor took 31.38ms. Allocated memory is still 182.5MB. Free memory was 152.3MB in the beginning and 150.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-02-23 22:57:28,262 INFO L158 Benchmark]: RCFGBuilder took 210.58ms. Allocated memory is still 182.5MB. Free memory was 150.7MB in the beginning and 141.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-02-23 22:57:28,264 INFO L158 Benchmark]: IcfgTransformer took 17.69ms. Allocated memory is still 182.5MB. Free memory was 141.3MB in the beginning and 139.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-02-23 22:57:28,265 INFO L158 Benchmark]: TraceAbstraction took 451.83ms. Allocated memory is still 182.5MB. Free memory was 139.6MB in the beginning and 113.4MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. Max. memory is 8.0GB. [2022-02-23 22:57:28,269 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 182.5MB. Free memory is still 142.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 198.93ms. Allocated memory is still 182.5MB. Free memory was 126.1MB in the beginning and 152.3MB in the end (delta: -26.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.38ms. Allocated memory is still 182.5MB. Free memory was 152.3MB in the beginning and 150.7MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 210.58ms. Allocated memory is still 182.5MB. Free memory was 150.7MB in the beginning and 141.3MB in the end (delta: 9.4MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 17.69ms. Allocated memory is still 182.5MB. Free memory was 141.3MB in the beginning and 139.8MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 451.83ms. Allocated memory is still 182.5MB. Free memory was 139.6MB in the beginning and 113.4MB in the end (delta: 26.2MB). Peak memory consumption was 26.2MB. 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 - 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 33, overapproximation of someBinaryDOUBLEComparisonOperation at line 28, overapproximation of someBinaryArithmeticDOUBLEoperation at line 29. Possible FailurePath: [L25] int r; [L26] double a, x; [L27] a = __VERIFIER_nondet_double() [L28] CALL assume_abort_if_not(a>=0 && a<=100) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=100) VAL [a=50] [L29] x = a / 2.0 [L30] r = 0 VAL [a=50, r=0] [L32] COND TRUE 1 VAL [a=50, r=0] [L33] 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 5 procedures, 27 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, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 15 mSDsluCounter, 28 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 3 mSDsCounter, 4 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 5 IncrementalHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 4 mSolverCounterUnsat, 25 mSDtfsCounter, 5 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=27occurred 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, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 16 ConstructedInterpolants, 0 QuantifiedInterpolants, 22 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 could not prove your program: unable to determine feasibility of some traces [2022-02-23 22:57:28,294 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...