/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/loop-acceleration/simple_3-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-b030c9e [2022-03-20 03:34:21,509 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-20 03:34:21,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-20 03:34:21,532 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-20 03:34:21,555 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-20 03:34:21,555 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-20 03:34:21,557 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-20 03:34:21,558 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-03-20 03:34:21,564 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-20 03:34:21,564 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-20 03:34:21,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-20 03:34:21,565 INFO L138 SettingsManager]: * sizeof long=4 [2022-03-20 03:34:21,565 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-20 03:34:21,565 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * sizeof long double=12 [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-20 03:34:21,566 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-20 03:34:21,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-20 03:34:21,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-20 03:34:21,567 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-20 03:34:21,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-20 03:34:21,567 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:21,567 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-20 03:34:21,567 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-20 03:34:21,568 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-20 03:34:21,568 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-20 03:34:21,791 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-20 03:34:21,809 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-20 03:34:21,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-20 03:34:21,814 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-20 03:34:21,815 INFO L275 PluginConnector]: CDTParser initialized [2022-03-20 03:34:21,816 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2022-03-20 03:34:21,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36501430/dd9152d8b4d8462b91c8fa36593351c7/FLAG0ceae89f8 [2022-03-20 03:34:22,215 INFO L306 CDTParser]: Found 1 translation units. [2022-03-20 03:34:22,215 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c [2022-03-20 03:34:22,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36501430/dd9152d8b4d8462b91c8fa36593351c7/FLAG0ceae89f8 [2022-03-20 03:34:22,654 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d36501430/dd9152d8b4d8462b91c8fa36593351c7 [2022-03-20 03:34:22,656 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-20 03:34:22,657 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-20 03:34:22,658 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:22,658 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-20 03:34:22,660 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-20 03:34:22,661 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,661 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@174c5e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22, skipping insertion in model container [2022-03-20 03:34:22,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,666 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-20 03:34:22,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-20 03:34:22,797 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c[376,389] [2022-03-20 03:34:22,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:22,811 INFO L203 MainTranslator]: Completed pre-run [2022-03-20 03:34:22,819 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-acceleration/simple_3-1.c[376,389] [2022-03-20 03:34:22,821 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-20 03:34:22,830 INFO L208 MainTranslator]: Completed translation [2022-03-20 03:34:22,831 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22 WrapperNode [2022-03-20 03:34:22,831 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-20 03:34:22,832 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-20 03:34:22,832 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-20 03:34:22,832 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-20 03:34:22,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,844 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,852 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,852 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,853 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-20 03:34:22,854 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-20 03:34:22,854 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-20 03:34:22,854 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-20 03:34:22,857 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (1/1) ... [2022-03-20 03:34:22,862 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-20 03:34:22,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-20 03:34:22,887 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-20 03:34:22,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-20 03:34:22,919 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-20 03:34:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-20 03:34:22,920 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-20 03:34:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-20 03:34:22,921 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-20 03:34:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-20 03:34:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-20 03:34:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-20 03:34:22,921 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-20 03:34:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_ushort [2022-03-20 03:34:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-20 03:34:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-20 03:34:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-20 03:34:22,922 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-20 03:34:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-20 03:34:22,923 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-20 03:34:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-20 03:34:22,924 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-20 03:34:22,974 INFO L234 CfgBuilder]: Building ICFG [2022-03-20 03:34:22,976 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-20 03:34:23,041 INFO L275 CfgBuilder]: Performing block encoding [2022-03-20 03:34:23,045 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-20 03:34:23,045 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-20 03:34:23,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:23 BoogieIcfgContainer [2022-03-20 03:34:23,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-20 03:34:23,047 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-20 03:34:23,047 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-20 03:34:23,048 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-20 03:34:23,050 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:23" (1/1) ... [2022-03-20 03:34:23,052 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-03-20 03:34:23,258 INFO L89 elerationTransformer]: Jordan loop acceleration statistics: 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult [2022-03-20 03:34:23,259 INFO L91 elerationTransformer]: Accelerated Formula: (and (= v_main_~x~0_3 (+ v_main_~x~0_4 2)) (< (mod v_main_~x~0_4 4294967296) (mod v_main_~N~0_3 65536))) InVars {main_~x~0=v_main_~x~0_4, main_~N~0=v_main_~N~0_3} OutVars{main_~x~0=v_main_~x~0_3, main_~N~0=v_main_~N~0_3} AuxVars[] AssignedVars[main_~x~0] to Formula: (let ((.cse1 (mod v_main_~x~0_4 4294967296)) (.cse0 (mod v_main_~N~0_3 65536))) (or (and (= v_main_~x~0_4 v_main_~x~0_3) (<= .cse0 .cse1)) (and (= (mod (+ v_main_~x~0_4 v_main_~x~0_3) 2) 0) (< .cse1 .cse0) (forall ((v_it_1 Int)) (or (< (mod (+ (* v_it_1 2) v_main_~x~0_4) 4294967296) (mod v_main_~N~0_3 65536)) (not (<= (+ v_it_1 1) (div (+ v_main_~x~0_4 (* (- 1) v_main_~x~0_3)) (- 2)))) (not (<= 1 v_it_1)))) (< 0 (div (+ v_main_~x~0_4 (* (- 1) v_main_~x~0_3)) (- 2)))))) InVars {main_~x~0=v_main_~x~0_4, main_~N~0=v_main_~N~0_3} OutVars{main_~x~0=v_main_~x~0_3, main_~N~0=v_main_~N~0_3} AuxVars[] AssignedVars[main_~x~0] [2022-03-20 03:34:23,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:23 BasicIcfg [2022-03-20 03:34:23,263 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-20 03:34:23,264 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-20 03:34:23,264 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-20 03:34:23,278 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-20 03:34:23,278 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.03 03:34:22" (1/4) ... [2022-03-20 03:34:23,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264061d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:23, skipping insertion in model container [2022-03-20 03:34:23,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.03 03:34:22" (2/4) ... [2022-03-20 03:34:23,279 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264061d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.03 03:34:23, skipping insertion in model container [2022-03-20 03:34:23,279 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.03 03:34:23" (3/4) ... [2022-03-20 03:34:23,280 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@264061d5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:34:23, skipping insertion in model container [2022-03-20 03:34:23,280 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 20.03 03:34:23" (4/4) ... [2022-03-20 03:34:23,281 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_3-1.cJordan [2022-03-20 03:34:23,284 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-03-20 03:34:23,285 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-20 03:34:23,313 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-20 03:34:23,319 INFO L340 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 [2022-03-20 03:34:23,319 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-20 03:34:23,328 INFO L276 IsEmpty]: Start isEmpty. Operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-20 03:34:23,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 03:34:23,333 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:23,333 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:23,334 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:23,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:23,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1690616289, now seen corresponding path program 1 times [2022-03-20 03:34:23,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:23,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049669287] [2022-03-20 03:34:23,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:23,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:23,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-20 03:34:23,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-20 03:34:23,442 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-20 03:34:23,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-20 03:34:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049669287] [2022-03-20 03:34:23,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049669287] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-20 03:34:23,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-20 03:34:23,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-20 03:34:23,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962199598] [2022-03-20 03:34:23,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-20 03:34:23,448 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-20 03:34:23,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-20 03:34:23,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-20 03:34:23,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 03:34:23,469 INFO L87 Difference]: Start difference. First operand has 18 states, 10 states have (on average 1.4) internal successors, (14), 11 states have internal predecessors, (14), 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) [2022-03-20 03:34:23,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-20 03:34:23,508 INFO L93 Difference]: Finished difference Result 18 states and 18 transitions. [2022-03-20 03:34:23,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-20 03:34:23,515 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 [2022-03-20 03:34:23,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-20 03:34:23,522 INFO L225 Difference]: With dead ends: 18 [2022-03-20 03:34:23,522 INFO L226 Difference]: Without dead ends: 12 [2022-03-20 03:34:23,523 INFO L912 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-20 03:34:23,528 INFO L913 BasicCegarLoop]: 17 mSDtfsCounter, 9 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 20 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 [2022-03-20 03:34:23,529 INFO L914 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 20 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-20 03:34:23,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2022-03-20 03:34:23,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2022-03-20 03:34:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 7 states have (on average 1.1428571428571428) internal successors, (8), 7 states have internal predecessors, (8), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-20 03:34:23,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 12 transitions. [2022-03-20 03:34:23,552 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 12 transitions. Word has length 11 [2022-03-20 03:34:23,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-20 03:34:23,553 INFO L478 AbstractCegarLoop]: Abstraction has 12 states and 12 transitions. [2022-03-20 03:34:23,553 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) [2022-03-20 03:34:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 12 transitions. [2022-03-20 03:34:23,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-03-20 03:34:23,554 INFO L491 BasicCegarLoop]: Found error trace [2022-03-20 03:34:23,554 INFO L499 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-20 03:34:23,554 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-20 03:34:23,554 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-20 03:34:23,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-20 03:34:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1689692768, now seen corresponding path program 1 times [2022-03-20 03:34:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-20 03:34:23,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469079585] [2022-03-20 03:34:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-20 03:34:23,559 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-20 03:34:23,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 03:34:23,585 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-20 03:34:23,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-20 03:34:23,620 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-20 03:34:23,621 INFO L618 BasicCegarLoop]: Counterexample is feasible [2022-03-20 03:34:23,622 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-20 03:34:23,624 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-20 03:34:23,625 INFO L719 BasicCegarLoop]: Path program histogram: [1, 1] [2022-03-20 03:34:23,627 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-20 03:34:23,643 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.03 03:34:23 BasicIcfg [2022-03-20 03:34:23,644 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-20 03:34:23,645 INFO L158 Benchmark]: Toolchain (without parser) took 987.64ms. Allocated memory was 173.0MB in the beginning and 239.1MB in the end (delta: 66.1MB). Free memory was 115.8MB in the beginning and 168.3MB in the end (delta: -52.5MB). Peak memory consumption was 13.9MB. Max. memory is 8.0GB. [2022-03-20 03:34:23,646 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory was 131.9MB in the beginning and 131.7MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-20 03:34:23,648 INFO L158 Benchmark]: CACSL2BoogieTranslator took 173.14ms. Allocated memory was 173.0MB in the beginning and 239.1MB in the end (delta: 66.1MB). Free memory was 115.5MB in the beginning and 210.6MB in the end (delta: -95.1MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. [2022-03-20 03:34:23,648 INFO L158 Benchmark]: Boogie Preprocessor took 21.90ms. Allocated memory is still 239.1MB. Free memory was 210.6MB in the beginning and 209.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-20 03:34:23,650 INFO L158 Benchmark]: RCFGBuilder took 192.47ms. Allocated memory is still 239.1MB. Free memory was 209.1MB in the beginning and 199.3MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-20 03:34:23,650 INFO L158 Benchmark]: IcfgTransformer took 216.08ms. Allocated memory is still 239.1MB. Free memory was 199.3MB in the beginning and 191.8MB in the end (delta: 7.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-20 03:34:23,651 INFO L158 Benchmark]: TraceAbstraction took 379.80ms. Allocated memory is still 239.1MB. Free memory was 190.9MB in the beginning and 168.3MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. Max. memory is 8.0GB. [2022-03-20 03:34:23,656 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from IcfgTransformer: - StatisticsResult: Jordan loop acceleration statistics 0 HavocedVariables, 1 AssignedVariables, 0 ReadonlyVariables, Eigenvalues: {1={2=1}}, 1 SequentialAcceleration, 0 AlternatingAcceleration, 0 QuantifierFreeResult * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 173.0MB. Free memory was 131.9MB in the beginning and 131.7MB in the end (delta: 125.9kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 173.14ms. Allocated memory was 173.0MB in the beginning and 239.1MB in the end (delta: 66.1MB). Free memory was 115.5MB in the beginning and 210.6MB in the end (delta: -95.1MB). Peak memory consumption was 8.6MB. Max. memory is 8.0GB. * Boogie Preprocessor took 21.90ms. Allocated memory is still 239.1MB. Free memory was 210.6MB in the beginning and 209.1MB in the end (delta: 1.5MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 192.47ms. Allocated memory is still 239.1MB. Free memory was 209.1MB in the beginning and 199.3MB in the end (delta: 9.8MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * IcfgTransformer took 216.08ms. Allocated memory is still 239.1MB. Free memory was 199.3MB in the beginning and 191.8MB in the end (delta: 7.5MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * TraceAbstraction took 379.80ms. Allocated memory is still 239.1MB. Free memory was 190.9MB in the beginning and 168.3MB in the end (delta: 22.6MB). Peak memory consumption was 23.1MB. 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: 8]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L14] unsigned int x = 0; [L15] unsigned short N = __VERIFIER_nondet_ushort(); [L17] COND FALSE !(x < N) VAL [N=0, x=0] [L21] CALL __VERIFIER_assert(x % 2) VAL [\old(cond)=0] [L7] COND TRUE !(cond) VAL [\old(cond)=0, cond=0] [L8] reach_error() VAL [\old(cond)=0, cond=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.3s, 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, 10 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 9 mSDsluCounter, 20 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, 17 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=18occurred 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, 0.0s 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! [2022-03-20 03:34:23,675 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...