/usr/bin/java -ea -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-scaling/freire1_valuebound20.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-27 18:43:50,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-27 18:43:50,570 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-27 18:43:50,599 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-27 18:43:50,599 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-27 18:43:50,600 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-27 18:43:50,601 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-27 18:43:50,615 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-27 18:43:50,616 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-27 18:43:50,617 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-27 18:43:50,618 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-27 18:43:50,618 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-27 18:43:50,618 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-27 18:43:50,619 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-27 18:43:50,620 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-27 18:43:50,620 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-27 18:43:50,621 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-27 18:43:50,621 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-27 18:43:50,622 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-27 18:43:50,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-27 18:43:50,624 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-27 18:43:50,635 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-27 18:43:50,636 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-27 18:43:50,637 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-27 18:43:50,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-27 18:43:50,639 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-04-27 18:43:50,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-27 18:43:50,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-27 18:43:50,648 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-27 18:43:50,649 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/LoopAccelerationJordanC.epf [2022-04-27 18:43:50,659 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-27 18:43:50,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-27 18:43:50,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-27 18:43:50,660 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-27 18:43:50,660 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-27 18:43:50,660 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-27 18:43:50,660 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-27 18:43:50,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-27 18:43:50,661 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-27 18:43:50,661 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-27 18:43:50,661 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-27 18:43:50,661 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-27 18:43:50,661 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-27 18:43:50,661 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-27 18:43:50,662 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-27 18:43:50,662 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-27 18:43:50,662 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-27 18:43:50,662 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-27 18:43:50,662 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 18:43:50,662 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-27 18:43:50,662 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-04-27 18:43:50,663 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-04-27 18:43:50,663 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-27 18:43:50,839 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-27 18:43:50,868 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-27 18:43:50,870 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-27 18:43:50,871 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-27 18:43:50,871 INFO L275 PluginConnector]: CDTParser initialized [2022-04-27 18:43:50,872 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound20.c [2022-04-27 18:43:50,915 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1022345c5/493f219587ea42a6a2718b2247828f3f/FLAG31c270ff0 [2022-04-27 18:43:51,275 INFO L306 CDTParser]: Found 1 translation units. [2022-04-27 18:43:51,276 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/freire1_valuebound20.c [2022-04-27 18:43:51,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1022345c5/493f219587ea42a6a2718b2247828f3f/FLAG31c270ff0 [2022-04-27 18:43:51,709 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1022345c5/493f219587ea42a6a2718b2247828f3f [2022-04-27 18:43:51,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-27 18:43:51,713 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-04-27 18:43:51,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-27 18:43:51,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-27 18:43:51,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-27 18:43:51,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,717 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d550fba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51, skipping insertion in model container [2022-04-27 18:43:51,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,722 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-27 18:43:51,731 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-27 18:43:51,846 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_valuebound20.c[712,725] [2022-04-27 18:43:51,874 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 18:43:51,880 INFO L203 MainTranslator]: Completed pre-run [2022-04-27 18:43:51,891 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_valuebound20.c[712,725] [2022-04-27 18:43:51,898 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-27 18:43:51,909 INFO L208 MainTranslator]: Completed translation [2022-04-27 18:43:51,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51 WrapperNode [2022-04-27 18:43:51,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-27 18:43:51,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-27 18:43:51,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-27 18:43:51,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-27 18:43:51,918 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,923 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,923 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,936 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,946 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-27 18:43:51,947 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-27 18:43:51,947 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-27 18:43:51,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-27 18:43:51,947 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (1/1) ... [2022-04-27 18:43:51,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-27 18:43:51,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-27 18:43:51,967 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-04-27 18:43:51,973 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-04-27 18:43:51,991 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-27 18:43:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-27 18:43:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-27 18:43:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-27 18:43:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-27 18:43:51,992 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-27 18:43:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-27 18:43:51,992 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-27 18:43:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-27 18:43:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-27 18:43:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_double [2022-04-27 18:43:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-27 18:43:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-27 18:43:51,993 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-27 18:43:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-27 18:43:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-27 18:43:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-27 18:43:51,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-27 18:43:51,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-27 18:43:51,995 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-27 18:43:52,041 INFO L234 CfgBuilder]: Building ICFG [2022-04-27 18:43:52,042 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-27 18:43:52,173 INFO L275 CfgBuilder]: Performing block encoding [2022-04-27 18:43:52,177 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-27 18:43:52,177 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-27 18:43:52,179 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 06:43:52 BoogieIcfgContainer [2022-04-27 18:43:52,179 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-27 18:43:52,179 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-04-27 18:43:52,179 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-04-27 18:43:52,180 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-04-27 18:43:52,182 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 06:43:52" (1/1) ... [2022-04-27 18:43:52,183 INFO L168 ansformationObserver]: Applying ICFG transformation LOOP_ACCELERATION_JORDAN [2022-04-27 18:43:52,235 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 06:43:52 BasicIcfg [2022-04-27 18:43:52,235 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-04-27 18:43:52,236 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-27 18:43:52,236 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-27 18:43:52,241 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-27 18:43:52,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.04 06:43:51" (1/4) ... [2022-04-27 18:43:52,241 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f1eed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 06:43:52, skipping insertion in model container [2022-04-27 18:43:52,241 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.04 06:43:51" (2/4) ... [2022-04-27 18:43:52,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f1eed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.04 06:43:52, skipping insertion in model container [2022-04-27 18:43:52,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.04 06:43:52" (3/4) ... [2022-04-27 18:43:52,242 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@15f1eed6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 06:43:52, skipping insertion in model container [2022-04-27 18:43:52,242 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 27.04 06:43:52" (4/4) ... [2022-04-27 18:43:52,243 INFO L111 eAbstractionObserver]: Analyzing ICFG freire1_valuebound20.cJordan [2022-04-27 18:43:52,252 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:ForwardPredicates Determinization: PREDICATE_ABSTRACTION [2022-04-27 18:43:52,252 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-27 18:43:52,290 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-27 18:43:52,306 INFO L357 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@43530edb, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a7847b3 [2022-04-27 18:43:52,307 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-27 18:43:52,312 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) [2022-04-27 18:43:52,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-27 18:43:52,317 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 18:43:52,318 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 18:43:52,319 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 18:43:52,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 18:43:52,325 INFO L85 PathProgramCache]: Analyzing trace with hash 409333534, now seen corresponding path program 1 times [2022-04-27 18:43:52,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 18:43:52,333 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564984990] [2022-04-27 18:43:52,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:43:52,334 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 18:43:52,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:43:52,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-27 18:43:52,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:43:52,504 INFO L290 TraceCheckUtils]: 0: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [62] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {30#true} is VALID [2022-04-27 18:43:52,504 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#true} [65] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#true} is VALID [2022-04-27 18:43:52,505 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {30#true} {30#true} [87] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#true} is VALID [2022-04-27 18:43:52,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-27 18:43:52,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-27 18:43:52,518 INFO L290 TraceCheckUtils]: 0: Hoare triple {30#true} [68] assume_abort_if_notENTRY-->L14: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {30#true} is VALID [2022-04-27 18:43:52,519 INFO L290 TraceCheckUtils]: 1: Hoare triple {30#true} [72] L14-->L14-2: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {31#false} is VALID [2022-04-27 18:43:52,519 INFO L290 TraceCheckUtils]: 2: Hoare triple {31#false} [76] L14-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {31#false} is VALID [2022-04-27 18:43:52,519 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {31#false} {30#true} [88] assume_abort_if_notEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (and v_~someBinaryDOUBLEComparisonOperation_11 v_~someBinaryDOUBLEComparisonOperation_12) 1 0)) InVars {} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[v_~someBinaryDOUBLEComparisonOperation_11, v_~someBinaryDOUBLEComparisonOperation_12] AssignedVars[assume_abort_if_not_#in~cond] {31#false} is VALID [2022-04-27 18:43:52,520 INFO L272 TraceCheckUtils]: 0: Hoare triple {30#true} [60] ULTIMATE.startENTRY-->ULTIMATE.initENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-27 18:43:52,521 INFO L290 TraceCheckUtils]: 1: Hoare triple {39#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} [62] ULTIMATE.initENTRY-->ULTIMATE.initFINAL: Formula: (let ((.cse0 (select |v_#memory_int_1| 1))) (and (= 48 (select .cse0 0)) (= (select |v_#valid_1| 2) 1) (= (select |v_#valid_1| 0) 0) (< 0 |v_#StackHeapBarrier_1|) (= |v_#NULL.base_1| 0) (= 1 (select |v_#valid_1| 3)) (= (select |v_#length_1| 3) 12) (= (select |v_#length_1| 2) 10) (= (select |v_#valid_1| 1) 1) (= 2 (select |v_#length_1| 1)) (= (select .cse0 1) 0) (= |v_#NULL.offset_1| 0))) InVars {#memory_int=|v_#memory_int_1|, #StackHeapBarrier=|v_#StackHeapBarrier_1|, #length=|v_#length_1|, #valid=|v_#valid_1|} OutVars{#StackHeapBarrier=|v_#StackHeapBarrier_1|, #valid=|v_#valid_1|, #memory_int=|v_#memory_int_1|, #NULL.offset=|v_#NULL.offset_1|, #length=|v_#length_1|, #NULL.base=|v_#NULL.base_1|} AuxVars[] AssignedVars[#NULL.offset, #NULL.base] {30#true} is VALID [2022-04-27 18:43:52,521 INFO L290 TraceCheckUtils]: 2: Hoare triple {30#true} [65] ULTIMATE.initFINAL-->ULTIMATE.initEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#true} is VALID [2022-04-27 18:43:52,521 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {30#true} {30#true} [87] ULTIMATE.initEXIT-->L-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#true} is VALID [2022-04-27 18:43:52,521 INFO L272 TraceCheckUtils]: 4: Hoare triple {30#true} [61] L-1-->mainENTRY: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {30#true} is VALID [2022-04-27 18:43:52,521 INFO L290 TraceCheckUtils]: 5: Hoare triple {30#true} [64] mainENTRY-->L28: Formula: (= v_main_~a~0_1 |v_main_#t~nondet4_2|) InVars {main_#t~nondet4=|v_main_#t~nondet4_2|} OutVars{main_~x~0=v_main_~x~0_1, main_~r~0=v_main_~r~0_1, main_~a~0=v_main_~a~0_1} AuxVars[] AssignedVars[main_#t~nondet4, main_~x~0, main_~r~0, main_~a~0] {30#true} is VALID [2022-04-27 18:43:52,521 INFO L272 TraceCheckUtils]: 6: Hoare triple {30#true} [66] L28-->assume_abort_if_notENTRY: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (and v_~someBinaryDOUBLEComparisonOperation_11 v_~someBinaryDOUBLEComparisonOperation_12) 1 0)) InVars {} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[v_~someBinaryDOUBLEComparisonOperation_11, v_~someBinaryDOUBLEComparisonOperation_12] AssignedVars[assume_abort_if_not_#in~cond] {30#true} is VALID [2022-04-27 18:43:52,522 INFO L290 TraceCheckUtils]: 7: Hoare triple {30#true} [68] assume_abort_if_notENTRY-->L14: Formula: (= |v_assume_abort_if_not_#in~cond_1| v_assume_abort_if_not_~cond_1) InVars {assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~cond_1|, assume_abort_if_not_~cond=v_assume_abort_if_not_~cond_1} AuxVars[] AssignedVars[assume_abort_if_not_~cond] {30#true} is VALID [2022-04-27 18:43:52,522 INFO L290 TraceCheckUtils]: 8: Hoare triple {30#true} [72] L14-->L14-2: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {31#false} is VALID [2022-04-27 18:43:52,522 INFO L290 TraceCheckUtils]: 9: Hoare triple {31#false} [76] L14-2-->assume_abort_if_notEXIT: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {31#false} is VALID [2022-04-27 18:43:52,522 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {31#false} {30#true} [88] assume_abort_if_notEXIT-->L28-1: AOR: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] LVA: Formula: (= |v_assume_abort_if_not_#in~condInParam_1| (ite (and v_~someBinaryDOUBLEComparisonOperation_11 v_~someBinaryDOUBLEComparisonOperation_12) 1 0)) InVars {} OutVars{assume_abort_if_not_#in~cond=|v_assume_abort_if_not_#in~condInParam_1|} AuxVars[v_~someBinaryDOUBLEComparisonOperation_11, v_~someBinaryDOUBLEComparisonOperation_12] AssignedVars[assume_abort_if_not_#in~cond] {31#false} is VALID [2022-04-27 18:43:52,523 INFO L290 TraceCheckUtils]: 11: Hoare triple {31#false} [67] L28-1-->L32-2: Formula: (= v_main_~r~0_4 0) InVars {} OutVars{main_~x~0=v_main_~x~0_3, main_~r~0=v_main_~r~0_4} AuxVars[] AssignedVars[main_~x~0, main_~r~0] {31#false} is VALID [2022-04-27 18:43:52,523 INFO L290 TraceCheckUtils]: 12: Hoare triple {31#false} [69] L32-2-->L32-3: Formula: false InVars {} OutVars{} AuxVars[] AssignedVars[] {31#false} is VALID [2022-04-27 18:43:52,524 INFO L272 TraceCheckUtils]: 13: Hoare triple {31#false} [74] L32-3-->__VERIFIER_assertENTRY: Formula: (= |v___VERIFIER_assert_#in~condInParam_2| (ite (= v_~convertDOUBLEToINT_7 0) 1 0)) InVars {} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~condInParam_2|} AuxVars[v_~convertDOUBLEToINT_7] AssignedVars[__VERIFIER_assert_#in~cond] {31#false} is VALID [2022-04-27 18:43:52,524 INFO L290 TraceCheckUtils]: 14: Hoare triple {31#false} [78] __VERIFIER_assertENTRY-->L17: Formula: (= v___VERIFIER_assert_~cond_1 |v___VERIFIER_assert_#in~cond_1|) InVars {__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|} OutVars{__VERIFIER_assert_#in~cond=|v___VERIFIER_assert_#in~cond_1|, __VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_1} AuxVars[] AssignedVars[__VERIFIER_assert_~cond] {31#false} is VALID [2022-04-27 18:43:52,524 INFO L290 TraceCheckUtils]: 15: Hoare triple {31#false} [82] L17-->L18: Formula: (= v___VERIFIER_assert_~cond_2 0) InVars {__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} OutVars{__VERIFIER_assert_~cond=v___VERIFIER_assert_~cond_2} AuxVars[] AssignedVars[] {31#false} is VALID [2022-04-27 18:43:52,524 INFO L290 TraceCheckUtils]: 16: Hoare triple {31#false} [84] L18-->__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION: Formula: true InVars {} OutVars{} AuxVars[] AssignedVars[] {31#false} is VALID [2022-04-27 18:43:52,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-04-27 18:43:52,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-27 18:43:52,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564984990] [2022-04-27 18:43:52,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564984990] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-27 18:43:52,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-27 18:43:52,526 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-27 18:43:52,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427720191] [2022-04-27 18:43:52,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-27 18:43:52,530 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 [2022-04-27 18:43:52,531 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-27 18:43:52,533 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 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) [2022-04-27 18:43:52,557 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 17 edges. 17 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:43:52,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-27 18:43:52,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-04-27 18:43:52,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-27 18:43:52,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-27 18:43:52,573 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) [2022-04-27 18:43:52,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:43:52,643 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2022-04-27 18:43:52,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-27 18:43:52,644 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 [2022-04-27 18:43:52,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-27 18:43:52,645 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-27 18:43:52,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-27 18:43:52,653 INFO L82 GeneralOperation]: Start removeUnreachable. 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) [2022-04-27 18:43:52,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2022-04-27 18:43:52,657 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 32 transitions. [2022-04-27 18:43:52,710 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-27 18:43:52,723 INFO L225 Difference]: With dead ends: 27 [2022-04-27 18:43:52,723 INFO L226 Difference]: Without dead ends: 22 [2022-04-27 18:43:52,724 INFO L412 NwaCegarLoop]: 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 [2022-04-27 18:43:52,727 INFO L413 NwaCegarLoop]: 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 [2022-04-27 18:43:52,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 28 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-27 18:43:52,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-04-27 18:43:52,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-04-27 18:43:52,749 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-27 18:43:52,749 INFO L82 GeneralOperation]: Start isEquivalent. First operand 22 states. Second 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) [2022-04-27 18:43:52,750 INFO L74 IsIncluded]: Start isIncluded. First operand 22 states. Second 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) [2022-04-27 18:43:52,750 INFO L87 Difference]: Start difference. First operand 22 states. Second 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) [2022-04-27 18:43:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:43:52,756 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-04-27 18:43:52,757 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-27 18:43:52,757 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:43:52,757 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:43:52,758 INFO L74 IsIncluded]: Start isIncluded. First 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) Second operand 22 states. [2022-04-27 18:43:52,758 INFO L87 Difference]: Start difference. First 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) Second operand 22 states. [2022-04-27 18:43:52,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-27 18:43:52,760 INFO L93 Difference]: Finished difference Result 22 states and 23 transitions. [2022-04-27 18:43:52,761 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-27 18:43:52,761 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-27 18:43:52,762 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-27 18:43:52,764 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-27 18:43:52,764 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-27 18:43:52,769 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) [2022-04-27 18:43:52,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2022-04-27 18:43:52,771 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 17 [2022-04-27 18:43:52,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-27 18:43:52,771 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2022-04-27 18:43:52,772 INFO L496 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) [2022-04-27 18:43:52,772 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2022-04-27 18:43:52,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-04-27 18:43:52,772 INFO L187 NwaCegarLoop]: Found error trace [2022-04-27 18:43:52,772 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-27 18:43:52,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-27 18:43:52,773 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-27 18:43:52,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-27 18:43:52,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1396244096, now seen corresponding path program 1 times [2022-04-27 18:43:52,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-27 18:43:52,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132349571] [2022-04-27 18:43:52,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-27 18:43:52,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-27 18:43:52,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 18:43:52,804 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-27 18:43:52,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-27 18:43:52,828 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-27 18:43:52,828 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-27 18:43:52,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-27 18:43:52,831 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-04-27 18:43:52,832 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1] [2022-04-27 18:43:52,835 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-27 18:43:52,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.04 06:43:52 BasicIcfg [2022-04-27 18:43:52,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-27 18:43:52,847 INFO L158 Benchmark]: Toolchain (without parser) took 1134.37ms. Allocated memory is still 179.3MB. Free memory was 131.3MB in the beginning and 105.8MB in the end (delta: 25.5MB). Peak memory consumption was 25.9MB. Max. memory is 8.0GB. [2022-04-27 18:43:52,847 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory was 147.5MB in the beginning and 147.4MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. [2022-04-27 18:43:52,848 INFO L158 Benchmark]: CACSL2BoogieTranslator took 196.56ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 156.7MB in the end (delta: -25.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-04-27 18:43:52,848 INFO L158 Benchmark]: Boogie Preprocessor took 35.62ms. Allocated memory is still 179.3MB. Free memory was 156.7MB in the beginning and 154.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-04-27 18:43:52,848 INFO L158 Benchmark]: RCFGBuilder took 232.18ms. Allocated memory is still 179.3MB. Free memory was 154.6MB in the beginning and 144.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. [2022-04-27 18:43:52,849 INFO L158 Benchmark]: IcfgTransformer took 56.19ms. Allocated memory is still 179.3MB. Free memory was 144.1MB in the beginning and 143.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-27 18:43:52,849 INFO L158 Benchmark]: TraceAbstraction took 609.83ms. Allocated memory is still 179.3MB. Free memory was 142.5MB in the beginning and 105.8MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. Max. memory is 8.0GB. [2022-04-27 18:43:52,851 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 179.3MB. Free memory was 147.5MB in the beginning and 147.4MB in the end (delta: 143.4kB). There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 196.56ms. Allocated memory is still 179.3MB. Free memory was 131.1MB in the beginning and 156.7MB in the end (delta: -25.6MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 35.62ms. Allocated memory is still 179.3MB. Free memory was 156.7MB in the beginning and 154.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 232.18ms. Allocated memory is still 179.3MB. Free memory was 154.6MB in the beginning and 144.1MB in the end (delta: 10.5MB). Peak memory consumption was 10.5MB. Max. memory is 8.0GB. * IcfgTransformer took 56.19ms. Allocated memory is still 179.3MB. Free memory was 144.1MB in the beginning and 143.1MB in the end (delta: 1.0MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 609.83ms. Allocated memory is still 179.3MB. Free memory was 142.5MB in the beginning and 105.8MB in the end (delta: 36.7MB). Peak memory consumption was 36.7MB. 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<=20) VAL [\old(cond)=1] [L14] COND FALSE !(!cond) VAL [\old(cond)=1, cond=1] [L28] RET assume_abort_if_not(a>=0 && a<=20) 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: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 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 [2022-04-27 18:43:52,882 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...