/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerCTransformed.xml -s ../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 01:04:04,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 01:04:04,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 01:04:04,257 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-19 01:04:04,258 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-19 01:04:04,258 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-19 01:04:04,259 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-19 01:04:04,260 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-19 01:04:04,261 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-19 01:04:04,271 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-19 01:04:04,272 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-19 01:04:04,272 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-19 01:04:04,273 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-19 01:04:04,273 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-19 01:04:04,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-19 01:04:04,275 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-19 01:04:04,275 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-19 01:04:04,276 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-19 01:04:04,277 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-19 01:04:04,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-19 01:04:04,278 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-19 01:04:04,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-19 01:04:04,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-19 01:04:04,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-19 01:04:04,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-19 01:04:04,282 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2022-03-19 01:04:04,289 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 01:04:04,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 01:04:04,290 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 01:04:04,291 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/loopacceleration/qvasr/qvasr_64.epf [2022-03-19 01:04:04,307 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 01:04:04,308 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 01:04:04,309 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-03-19 01:04:04,309 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-03-19 01:04:04,310 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-03-19 01:04:04,310 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-03-19 01:04:04,310 INFO L138 SettingsManager]: * Use SBE=true [2022-03-19 01:04:04,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 01:04:04,310 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 01:04:04,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 01:04:04,311 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 01:04:04,311 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 01:04:04,311 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 01:04:04,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 01:04:04,311 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 01:04:04,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 01:04:04,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 01:04:04,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-03-19 01:04:04,312 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 01:04:04,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-03-19 01:04:04,313 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-03-19 01:04:04,313 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-03-19 01:04:04,313 INFO L138 SettingsManager]: * TransformationType=LOOP_ACCELERATION_QVASR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 01:04:04,502 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 01:04:04,516 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 01:04:04,518 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 01:04:04,518 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 01:04:04,519 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 01:04:04,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2022-03-19 01:04:04,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e05af326/fa249ecd60d040c4839528590d7a09fd/FLAGd2859ec85 [2022-03-19 01:04:04,896 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 01:04:04,897 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/prod4br-ll_unwindbound1.c [2022-03-19 01:04:04,915 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e05af326/fa249ecd60d040c4839528590d7a09fd/FLAGd2859ec85 [2022-03-19 01:04:04,931 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8e05af326/fa249ecd60d040c4839528590d7a09fd [2022-03-19 01:04:04,935 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 01:04:04,936 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2022-03-19 01:04:04,937 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 01:04:04,937 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 01:04:04,939 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 01:04:04,940 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:04:04" (1/1) ... [2022-03-19 01:04:04,940 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef0329a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:04, skipping insertion in model container [2022-03-19 01:04:04,941 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 01:04:04" (1/1) ... [2022-03-19 01:04:04,945 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 01:04:04,957 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 01:04:05,093 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/prod4br-ll_unwindbound1.c[524,537] [2022-03-19 01:04:05,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 01:04:05,128 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 01:04:05,136 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/prod4br-ll_unwindbound1.c[524,537] [2022-03-19 01:04:05,154 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 01:04:05,162 INFO L208 MainTranslator]: Completed translation [2022-03-19 01:04:05,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05 WrapperNode [2022-03-19 01:04:05,163 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 01:04:05,164 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 01:04:05,164 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 01:04:05,164 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 01:04:05,171 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,171 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,183 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,183 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,191 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,193 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,194 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,195 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 01:04:05,195 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 01:04:05,196 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 01:04:05,196 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 01:04:05,199 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 01:04:05,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:04:05,220 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) [2022-03-19 01:04:05,222 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 [2022-03-19 01:04:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 01:04:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 01:04:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 01:04:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 01:04:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 01:04:05,253 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 01:04:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 01:04:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 01:04:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 01:04:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 01:04:05,255 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 01:04:05,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 01:04:05,300 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 01:04:05,302 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 01:04:05,404 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 01:04:05,407 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 01:04:05,407 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 01:04:05,408 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:04:05 BoogieIcfgContainer [2022-03-19 01:04:05,408 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 01:04:05,409 INFO L113 PluginConnector]: ------------------------IcfgTransformer---------------------------- [2022-03-19 01:04:05,409 INFO L271 PluginConnector]: Initializing IcfgTransformer... [2022-03-19 01:04:05,410 INFO L275 PluginConnector]: IcfgTransformer initialized [2022-03-19 01:04:05,411 INFO L185 PluginConnector]: Executing the observer IcfgTransformationObserver from plugin IcfgTransformer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:04:05" (1/1) ... [2022-03-19 01:04:05,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 19.03 01:04:05 BasicIcfg [2022-03-19 01:04:05,434 INFO L132 PluginConnector]: ------------------------ END IcfgTransformer---------------------------- [2022-03-19 01:04:05,435 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 01:04:05,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 01:04:05,437 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 01:04:05,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 01:04:04" (1/4) ... [2022-03-19 01:04:05,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54500108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:04:05, skipping insertion in model container [2022-03-19 01:04:05,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 01:04:05" (2/4) ... [2022-03-19 01:04:05,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54500108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 01:04:05, skipping insertion in model container [2022-03-19 01:04:05,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 01:04:05" (3/4) ... [2022-03-19 01:04:05,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54500108 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 01:04:05, skipping insertion in model container [2022-03-19 01:04:05,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation CFG 19.03 01:04:05" (4/4) ... [2022-03-19 01:04:05,438 INFO L111 eAbstractionObserver]: Analyzing ICFG prod4br-ll_unwindbound1.cqvasr [2022-03-19 01:04:05,441 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-03-19 01:04:05,441 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 01:04:05,467 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 01:04:05,471 INFO L340 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP [2022-03-19 01:04:05,471 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 01:04:05,480 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-19 01:04:05,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-03-19 01:04:05,482 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:04:05,483 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:04:05,483 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:04:05,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:04:05,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1119019339, now seen corresponding path program 1 times [2022-03-19 01:04:05,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:04:05,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629121782] [2022-03-19 01:04:05,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:05,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:04:05,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:04:05,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 01:04:05,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:04:05,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-19 01:04:05,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:04:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:04:05,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:04:05,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629121782] [2022-03-19 01:04:05,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629121782] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:04:05,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:04:05,651 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-19 01:04:05,651 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543328688] [2022-03-19 01:04:05,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:04:05,654 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-19 01:04:05,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:04:05,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-19 01:04:05,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 01:04:05,671 INFO L87 Difference]: Start difference. First operand has 32 states, 20 states have (on average 1.45) internal successors, (29), 21 states have internal predecessors, (29), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) 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) [2022-03-19 01:04:05,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:04:05,739 INFO L93 Difference]: Finished difference Result 56 states and 77 transitions. [2022-03-19 01:04:05,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-19 01:04:05,740 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 [2022-03-19 01:04:05,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:04:05,744 INFO L225 Difference]: With dead ends: 56 [2022-03-19 01:04:05,744 INFO L226 Difference]: Without dead ends: 28 [2022-03-19 01:04:05,746 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-19 01:04:05,748 INFO L912 BasicCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:04:05,749 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 40 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 01:04:05,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-03-19 01:04:05,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2022-03-19 01:04:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 17 states have (on average 1.3529411764705883) internal successors, (23), 18 states have internal predecessors, (23), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-19 01:04:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2022-03-19 01:04:05,771 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 17 [2022-03-19 01:04:05,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:04:05,771 INFO L478 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2022-03-19 01:04:05,771 INFO L479 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) [2022-03-19 01:04:05,772 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2022-03-19 01:04:05,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-19 01:04:05,772 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:04:05,772 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:04:05,772 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 01:04:05,773 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:04:05,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:04:05,773 INFO L85 PathProgramCache]: Analyzing trace with hash -496973861, now seen corresponding path program 1 times [2022-03-19 01:04:05,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:04:05,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515277151] [2022-03-19 01:04:05,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:05,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:04:05,785 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 01:04:05,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2104607899] [2022-03-19 01:04:05,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:05,786 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:04:05,786 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:04:05,787 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 01:04:05,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-19 01:04:05,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:04:05,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 5 conjunts are in the unsatisfiable core [2022-03-19 01:04:05,851 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 01:04:05,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:04:05,942 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 01:04:05,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:04:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515277151] [2022-03-19 01:04:05,942 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 01:04:05,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2104607899] [2022-03-19 01:04:05,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2104607899] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:04:05,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:04:05,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-03-19 01:04:05,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412436712] [2022-03-19 01:04:05,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:04:05,943 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-03-19 01:04:05,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:04:05,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-03-19 01:04:05,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 01:04:05,944 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 01:04:05,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:04:05,958 INFO L93 Difference]: Finished difference Result 37 states and 44 transitions. [2022-03-19 01:04:05,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-03-19 01:04:05,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2022-03-19 01:04:05,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:04:05,959 INFO L225 Difference]: With dead ends: 37 [2022-03-19 01:04:05,960 INFO L226 Difference]: Without dead ends: 29 [2022-03-19 01:04:05,960 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-03-19 01:04:05,961 INFO L912 BasicCegarLoop]: 31 mSDtfsCounter, 0 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:04:05,961 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 01:04:05,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-03-19 01:04:05,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-03-19 01:04:05,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 19 states have (on average 1.3157894736842106) internal successors, (25), 20 states have internal predecessors, (25), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-19 01:04:05,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-03-19 01:04:05,966 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 18 [2022-03-19 01:04:05,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:04:05,966 INFO L478 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-03-19 01:04:05,966 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 3 states have internal predecessors, (12), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 01:04:05,966 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-03-19 01:04:05,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-03-19 01:04:05,966 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:04:05,967 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:04:05,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-19 01:04:06,167 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:04:06,168 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:04:06,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:04:06,168 INFO L85 PathProgramCache]: Analyzing trace with hash -495871594, now seen corresponding path program 1 times [2022-03-19 01:04:06,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:04:06,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887695056] [2022-03-19 01:04:06,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:06,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:04:06,178 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 01:04:06,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1250525685] [2022-03-19 01:04:06,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:06,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:04:06,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:04:06,186 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 01:04:06,187 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-19 01:04:06,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:04:06,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 86 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-19 01:04:06,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 01:04:06,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:04:06,319 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-19 01:04:06,319 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:04:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887695056] [2022-03-19 01:04:06,319 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 01:04:06,319 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250525685] [2022-03-19 01:04:06,319 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250525685] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 01:04:06,320 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 01:04:06,320 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-19 01:04:06,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506483264] [2022-03-19 01:04:06,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 01:04:06,320 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-19 01:04:06,320 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:04:06,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-19 01:04:06,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-19 01:04:06,340 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 01:04:06,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:04:06,378 INFO L93 Difference]: Finished difference Result 42 states and 53 transitions. [2022-03-19 01:04:06,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-19 01:04:06,378 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2022-03-19 01:04:06,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:04:06,379 INFO L225 Difference]: With dead ends: 42 [2022-03-19 01:04:06,379 INFO L226 Difference]: Without dead ends: 40 [2022-03-19 01:04:06,379 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-19 01:04:06,380 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 9 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-19 01:04:06,380 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 90 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-19 01:04:06,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-03-19 01:04:06,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 34. [2022-03-19 01:04:06,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 24 states have internal predecessors, (28), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-19 01:04:06,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 40 transitions. [2022-03-19 01:04:06,386 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 40 transitions. Word has length 18 [2022-03-19 01:04:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:04:06,386 INFO L478 AbstractCegarLoop]: Abstraction has 34 states and 40 transitions. [2022-03-19 01:04:06,387 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-03-19 01:04:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 40 transitions. [2022-03-19 01:04:06,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-03-19 01:04:06,387 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:04:06,387 INFO L500 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:04:06,408 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-19 01:04:06,601 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-19 01:04:06,601 INFO L403 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:04:06,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:04:06,602 INFO L85 PathProgramCache]: Analyzing trace with hash -1025358414, now seen corresponding path program 1 times [2022-03-19 01:04:06,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:04:06,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829808257] [2022-03-19 01:04:06,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:06,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:04:06,612 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 01:04:06,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [877934246] [2022-03-19 01:04:06,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:06,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:04:06,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:04:06,618 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 01:04:06,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-03-19 01:04:06,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 01:04:06,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 15 conjunts are in the unsatisfiable core [2022-03-19 01:04:06,653 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-19 01:04:06,920 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:04:06,920 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-19 01:04:07,098 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 01:04:07,098 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 01:04:07,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829808257] [2022-03-19 01:04:07,098 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-19 01:04:07,099 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877934246] [2022-03-19 01:04:07,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877934246] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-19 01:04:07,099 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-19 01:04:07,099 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 8] total 15 [2022-03-19 01:04:07,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111628643] [2022-03-19 01:04:07,099 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-03-19 01:04:07,099 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-03-19 01:04:07,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-03-19 01:04:07,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-03-19 01:04:07,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2022-03-19 01:04:07,100 INFO L87 Difference]: Start difference. First operand 34 states and 40 transitions. Second operand has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 01:04:07,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 01:04:07,363 INFO L93 Difference]: Finished difference Result 55 states and 72 transitions. [2022-03-19 01:04:07,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-03-19 01:04:07,364 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 24 [2022-03-19 01:04:07,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 01:04:07,367 INFO L225 Difference]: With dead ends: 55 [2022-03-19 01:04:07,367 INFO L226 Difference]: Without dead ends: 53 [2022-03-19 01:04:07,368 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=309, Unknown=0, NotChecked=0, Total=380 [2022-03-19 01:04:07,368 INFO L912 BasicCegarLoop]: 20 mSDtfsCounter, 38 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 173 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-03-19 01:04:07,369 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 173 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-03-19 01:04:07,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2022-03-19 01:04:07,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2022-03-19 01:04:07,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 25 states have (on average 1.24) internal successors, (31), 28 states have internal predecessors, (31), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 4 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-19 01:04:07,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2022-03-19 01:04:07,377 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 24 [2022-03-19 01:04:07,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 01:04:07,377 INFO L478 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2022-03-19 01:04:07,377 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 1.9230769230769231) internal successors, (25), 11 states have internal predecessors, (25), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-03-19 01:04:07,377 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2022-03-19 01:04:07,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-03-19 01:04:07,378 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 01:04:07,378 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 01:04:07,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-03-19 01:04:07,594 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:04:07,594 INFO L403 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 01:04:07,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 01:04:07,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2117889998, now seen corresponding path program 1 times [2022-03-19 01:04:07,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 01:04:07,595 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656804050] [2022-03-19 01:04:07,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:07,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 01:04:07,603 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-19 01:04:07,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [903216388] [2022-03-19 01:04:07,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 01:04:07,604 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:04:07,604 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 01:04:07,605 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-19 01:04:07,606 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-03-19 01:04:07,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 01:04:07,636 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-03-19 01:04:07,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-03-19 01:04:07,655 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-03-19 01:04:07,655 INFO L614 BasicCegarLoop]: Counterexample is feasible [2022-03-19 01:04:07,656 INFO L788 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 01:04:07,707 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-03-19 01:04:07,857 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-19 01:04:07,860 INFO L718 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-03-19 01:04:07,861 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 01:04:07,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 01:04:07 BasicIcfg [2022-03-19 01:04:07,876 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 01:04:07,877 INFO L158 Benchmark]: Toolchain (without parser) took 2940.88ms. Allocated memory was 180.4MB in the beginning and 225.4MB in the end (delta: 45.1MB). Free memory was 153.5MB in the beginning and 121.9MB in the end (delta: 31.6MB). Peak memory consumption was 75.9MB. Max. memory is 8.0GB. [2022-03-19 01:04:07,877 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 180.4MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 01:04:07,877 INFO L158 Benchmark]: CACSL2BoogieTranslator took 226.10ms. Allocated memory is still 180.4MB. Free memory was 153.3MB in the beginning and 150.8MB in the end (delta: 2.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. [2022-03-19 01:04:07,877 INFO L158 Benchmark]: Boogie Preprocessor took 31.35ms. Allocated memory is still 180.4MB. Free memory was 150.8MB in the beginning and 149.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-19 01:04:07,877 INFO L158 Benchmark]: RCFGBuilder took 213.06ms. Allocated memory is still 180.4MB. Free memory was 149.3MB in the beginning and 138.0MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-19 01:04:07,878 INFO L158 Benchmark]: IcfgTransformer took 24.74ms. Allocated memory is still 180.4MB. Free memory was 138.0MB in the beginning and 136.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-03-19 01:04:07,878 INFO L158 Benchmark]: TraceAbstraction took 2441.70ms. Allocated memory was 180.4MB in the beginning and 225.4MB in the end (delta: 45.1MB). Free memory was 136.2MB in the beginning and 121.9MB in the end (delta: 14.3MB). Peak memory consumption was 59.9MB. Max. memory is 8.0GB. [2022-03-19 01:04:07,879 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 180.4MB. Free memory is still 139.9MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 226.10ms. Allocated memory is still 180.4MB. Free memory was 153.3MB in the beginning and 150.8MB in the end (delta: 2.4MB). Peak memory consumption was 7.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.35ms. Allocated memory is still 180.4MB. Free memory was 150.8MB in the beginning and 149.3MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 213.06ms. Allocated memory is still 180.4MB. Free memory was 149.3MB in the beginning and 138.0MB in the end (delta: 11.3MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * IcfgTransformer took 24.74ms. Allocated memory is still 180.4MB. Free memory was 138.0MB in the beginning and 136.7MB in the end (delta: 1.3MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * TraceAbstraction took 2441.70ms. Allocated memory was 180.4MB in the beginning and 225.4MB in the end (delta: 45.1MB). Free memory was 136.2MB in the beginning and 121.9MB in the end (delta: 14.3MB). Peak memory consumption was 59.9MB. 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: 14]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L19] int counter = 0; VAL [\old(counter)=5, counter=0] [L21] int x, y; [L22] long long a, b, p, q; [L24] x = __VERIFIER_nondet_int() [L25] y = __VERIFIER_nondet_int() [L26] CALL assume_abort_if_not(y >= 1) VAL [\old(cond)=1, \old(counter)=0, counter=0] [L9] COND FALSE !(!cond) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=0] [L26] RET assume_abort_if_not(y >= 1) VAL [\old(counter)=0, counter=0, x=2, y=2] [L28] a = x [L29] b = y [L30] p = 1 [L31] q = 0 VAL [\old(counter)=0, a=2, b=2, counter=0, p=1, q=0, x=2, y=2] [L33] EXPR counter++ VAL [\old(counter)=0, a=2, b=2, counter=1, counter++=0, p=1, q=0, x=2, y=2] [L33] COND TRUE counter++<1 [L34] CALL __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(cond)=1, \old(counter)=0, counter=1] [L12] COND FALSE !(!(cond)) VAL [\old(cond)=1, \old(counter)=0, cond=1, counter=1] [L34] RET __VERIFIER_assert(q + a * b * p == (long long) x * y) VAL [\old(counter)=0, a=2, b=2, counter=1, p=1, q=0, x=2, y=2] [L36] COND FALSE !(!(a != 0 && b != 0)) VAL [\old(counter)=0, a=2, b=2, counter=1, p=1, q=0, x=2, y=2] [L39] COND TRUE a % 2 == 0 && b % 2 == 0 [L40] a = a / 2 [L41] b = b / 2 [L42] p = 4 * p VAL [\old(counter)=0, a=1, b=1, counter=1, p=4, q=0, x=2, y=2] [L33] EXPR counter++ VAL [\old(counter)=0, a=1, b=1, counter=2, counter++=1, p=4, q=0, x=2, y=2] [L33] COND FALSE !(counter++<1) [L56] CALL __VERIFIER_assert(q == (long long) x * y) VAL [\old(cond)=0, \old(counter)=0, counter=2] [L12] COND TRUE !(cond) VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] [L14] reach_error() VAL [\old(cond)=0, \old(counter)=0, cond=0, counter=2] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.4s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 63 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 57 mSDsluCounter, 384 SdHoareTripleChecker+Invalid, 0.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 38 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 302 IncrementalHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 38 mSolverCounterUnsat, 111 mSDtfsCounter, 302 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 69 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=4, InterpolantAutomatonStates: 26, 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, 4 MinimizatonAttempts, 21 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 104 NumberOfCodeBlocks, 104 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 286 SizeOfPredicates, 12 NumberOfNonLiveVariables, 268 ConjunctsInSsa, 35 ConjunctsInUnsatCore, 5 InterpolantComputations, 3 PerfectInterpolantSequences, 2/4 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! [2022-03-19 01:04:07,892 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...