/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/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 06:06:55,496 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 06:06:55,498 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 06:06:55,543 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-28 06:06:55,544 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-28 06:06:55,545 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-28 06:06:55,548 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-28 06:06:55,550 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-28 06:06:55,552 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-28 06:06:55,555 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-28 06:06:55,556 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-28 06:06:55,557 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-28 06:06:55,558 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 06:06:55,560 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 06:06:55,561 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 06:06:55,563 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 06:06:55,564 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 06:06:55,564 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 06:06:55,566 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 06:06:55,571 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 06:06:55,573 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 06:06:55,574 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 06:06:55,575 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 06:06:55,575 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 06:06:55,577 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 06:06:55,583 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-28 06:06:55,583 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-28 06:06:55,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-28 06:06:55,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-28 06:06:55,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-28 06:06:55,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-28 06:06:55,585 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-28 06:06:55,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-28 06:06:55,587 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-28 06:06:55,587 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-28 06:06:55,588 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-28 06:06:55,588 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-28 06:06:55,589 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-28 06:06:55,589 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-28 06:06:55,589 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 06:06:55,590 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 06:06:55,591 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 06:06:55,591 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2022-04-28 06:06:55,603 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 06:06:55,603 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 06:06:55,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 06:06:55,604 INFO L138 SettingsManager]: * sizeof long=4 [2022-04-28 06:06:55,605 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 06:06:55,605 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-04-28 06:06:55,605 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 06:06:55,605 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 06:06:55,605 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 06:06:55,606 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 06:06:55,606 INFO L138 SettingsManager]: * sizeof long double=12 [2022-04-28 06:06:55,606 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 06:06:55,606 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 06:06:55,606 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 06:06:55,606 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 06:06:55,606 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 06:06:55,607 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 06:06:55,607 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2022-04-28 06:06:55,608 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 06:06:55,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 06:06:55,844 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 06:06:55,846 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 06:06:55,847 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 06:06:55,848 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 06:06:55,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound1.c [2022-04-28 06:06:55,913 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d13236793/4c93129d95d141ce9d27e1d7f35d0e01/FLAG9517cd539 [2022-04-28 06:06:56,272 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 06:06:56,273 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/geo1-u_valuebound1.c [2022-04-28 06:06:56,278 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d13236793/4c93129d95d141ce9d27e1d7f35d0e01/FLAG9517cd539 [2022-04-28 06:06:56,287 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d13236793/4c93129d95d141ce9d27e1d7f35d0e01 [2022-04-28 06:06:56,288 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 06:06:56,290 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 06:06:56,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 06:06:56,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 06:06:56,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 06:06:56,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,297 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@568a7427 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56, skipping insertion in model container [2022-04-28 06:06:56,297 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 06:06:56,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 06:06:56,451 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/geo1-u_valuebound1.c[555,568] [2022-04-28 06:06:56,464 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 06:06:56,471 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 06:06:56,482 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/geo1-u_valuebound1.c[555,568] [2022-04-28 06:06:56,487 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 06:06:56,498 INFO L208 MainTranslator]: Completed translation [2022-04-28 06:06:56,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56 WrapperNode [2022-04-28 06:06:56,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 06:06:56,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 06:06:56,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 06:06:56,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 06:06:56,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,513 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,514 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,518 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,521 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,522 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,524 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 06:06:56,524 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 06:06:56,524 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 06:06:56,525 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 06:06:56,525 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (1/1) ... [2022-04-28 06:06:56,534 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 06:06:56,542 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:56,556 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) [2022-04-28 06:06:56,563 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 [2022-04-28 06:06:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 06:06:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 06:06:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 06:06:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 06:06:56,592 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 06:06:56,593 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 06:06:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 06:06:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 06:06:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 06:06:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 06:06:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 06:06:56,593 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 06:06:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 06:06:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 06:06:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 06:06:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 06:06:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 06:06:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 06:06:56,594 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 06:06:56,595 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 06:06:56,641 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 06:06:56,642 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 06:06:56,741 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 06:06:56,747 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 06:06:56,747 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-04-28 06:06:56,748 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 06:06:56 BoogieIcfgContainer [2022-04-28 06:06:56,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 06:06:56,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 06:06:56,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 06:06:56,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 06:06:56,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 06:06:56" (1/3) ... [2022-04-28 06:06:56,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e15a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 06:06:56, skipping insertion in model container [2022-04-28 06:06:56,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 06:06:56" (2/3) ... [2022-04-28 06:06:56,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9e15a7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 06:06:56, skipping insertion in model container [2022-04-28 06:06:56,754 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 06:06:56" (3/3) ... [2022-04-28 06:06:56,755 INFO L111 eAbstractionObserver]: Analyzing ICFG geo1-u_valuebound1.c [2022-04-28 06:06:56,766 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 06:06:56,767 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 06:06:56,800 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 06:06:56,805 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=Craig_NestedInterpolation, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, 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@3823a76a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@a992764 [2022-04-28 06:06:56,805 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 06:06:56,812 INFO L276 IsEmpty]: Start isEmpty. Operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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) [2022-04-28 06:06:56,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 06:06:56,818 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:56,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:56,819 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:56,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:56,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1335806002, now seen corresponding path program 1 times [2022-04-28 06:06:56,829 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:56,830 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [668430914] [2022-04-28 06:06:56,839 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:56,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1335806002, now seen corresponding path program 2 times [2022-04-28 06:06:56,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:56,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311238991] [2022-04-28 06:06:56,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:56,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:56,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:57,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 06:06:57,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:57,028 INFO L290 TraceCheckUtils]: 0: Hoare triple {46#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {33#true} is VALID [2022-04-28 06:06:57,028 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-28 06:06:57,029 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {33#true} {33#true} #62#return; {33#true} is VALID [2022-04-28 06:06:57,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 06:06:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:57,037 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:57,038 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:57,038 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:57,039 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {33#true} #54#return; {34#false} is VALID [2022-04-28 06:06:57,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-04-28 06:06:57,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:57,047 INFO L290 TraceCheckUtils]: 0: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:57,047 INFO L290 TraceCheckUtils]: 1: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:57,048 INFO L290 TraceCheckUtils]: 2: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:57,048 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {34#false} {34#false} #56#return; {34#false} is VALID [2022-04-28 06:06:57,049 INFO L272 TraceCheckUtils]: 0: Hoare triple {33#true} call ULTIMATE.init(); {46#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 06:06:57,049 INFO L290 TraceCheckUtils]: 1: Hoare triple {46#(and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {33#true} is VALID [2022-04-28 06:06:57,050 INFO L290 TraceCheckUtils]: 2: Hoare triple {33#true} assume true; {33#true} is VALID [2022-04-28 06:06:57,050 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {33#true} {33#true} #62#return; {33#true} is VALID [2022-04-28 06:06:57,050 INFO L272 TraceCheckUtils]: 4: Hoare triple {33#true} call #t~ret6 := main(); {33#true} is VALID [2022-04-28 06:06:57,050 INFO L290 TraceCheckUtils]: 5: Hoare triple {33#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4; {33#true} is VALID [2022-04-28 06:06:57,051 INFO L272 TraceCheckUtils]: 6: Hoare triple {33#true} call assume_abort_if_not((if ~z~0 % 4294967296 >= 0 && ~z~0 % 4294967296 <= 1 then 1 else 0)); {33#true} is VALID [2022-04-28 06:06:57,051 INFO L290 TraceCheckUtils]: 7: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:57,051 INFO L290 TraceCheckUtils]: 8: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:57,052 INFO L290 TraceCheckUtils]: 9: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:57,052 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {34#false} {33#true} #54#return; {34#false} is VALID [2022-04-28 06:06:57,052 INFO L290 TraceCheckUtils]: 11: Hoare triple {34#false} ~k~0 := #t~nondet5;havoc #t~nondet5; {34#false} is VALID [2022-04-28 06:06:57,053 INFO L272 TraceCheckUtils]: 12: Hoare triple {34#false} call assume_abort_if_not((if ~k~0 % 4294967296 >= 0 && ~k~0 % 4294967296 <= 1 then 1 else 0)); {33#true} is VALID [2022-04-28 06:06:57,053 INFO L290 TraceCheckUtils]: 13: Hoare triple {33#true} ~cond := #in~cond; {33#true} is VALID [2022-04-28 06:06:57,053 INFO L290 TraceCheckUtils]: 14: Hoare triple {33#true} assume 0 == ~cond;assume false; {34#false} is VALID [2022-04-28 06:06:57,054 INFO L290 TraceCheckUtils]: 15: Hoare triple {34#false} assume true; {34#false} is VALID [2022-04-28 06:06:57,054 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {34#false} {34#false} #56#return; {34#false} is VALID [2022-04-28 06:06:57,054 INFO L290 TraceCheckUtils]: 17: Hoare triple {34#false} ~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {34#false} is VALID [2022-04-28 06:06:57,054 INFO L290 TraceCheckUtils]: 18: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-28 06:06:57,055 INFO L272 TraceCheckUtils]: 19: Hoare triple {34#false} call __VERIFIER_assert((if 0 == 1 + (~x~0 * (~z~0 % 4294967296) - ~x~0 - ~y~0) then 1 else 0)); {34#false} is VALID [2022-04-28 06:06:57,055 INFO L290 TraceCheckUtils]: 20: Hoare triple {34#false} ~cond := #in~cond; {34#false} is VALID [2022-04-28 06:06:57,055 INFO L290 TraceCheckUtils]: 21: Hoare triple {34#false} assume 0 == ~cond; {34#false} is VALID [2022-04-28 06:06:57,055 INFO L290 TraceCheckUtils]: 22: Hoare triple {34#false} assume !false; {34#false} is VALID [2022-04-28 06:06:57,056 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 06:06:57,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:57,057 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311238991] [2022-04-28 06:06:57,057 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311238991] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:57,058 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:57,058 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 06:06:57,060 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:57,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [668430914] [2022-04-28 06:06:57,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [668430914] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:57,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:57,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 06:06:57,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714428257] [2022-04-28 06:06:57,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:57,067 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 06:06:57,068 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:57,071 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:57,097 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:57,097 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 06:06:57,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:57,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 06:06:57,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 06:06:57,118 INFO L87 Difference]: Start difference. First operand has 30 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 19 states have internal predecessors, (24), 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 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:57,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:57,247 INFO L93 Difference]: Finished difference Result 53 states and 68 transitions. [2022-04-28 06:06:57,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 06:06:57,248 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 23 [2022-04-28 06:06:57,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:57,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:57,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2022-04-28 06:06:57,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:57,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 68 transitions. [2022-04-28 06:06:57,271 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 68 transitions. [2022-04-28 06:06:57,365 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 68 edges. 68 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:57,378 INFO L225 Difference]: With dead ends: 53 [2022-04-28 06:06:57,379 INFO L226 Difference]: Without dead ends: 25 [2022-04-28 06:06:57,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 06:06:57,388 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:57,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:57,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-04-28 06:06:57,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-04-28 06:06:57,428 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:57,428 INFO L82 GeneralOperation]: Start isEquivalent. First operand 25 states. Second operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-04-28 06:06:57,429 INFO L74 IsIncluded]: Start isIncluded. First operand 25 states. Second operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-04-28 06:06:57,429 INFO L87 Difference]: Start difference. First operand 25 states. Second operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-04-28 06:06:57,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:57,433 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-28 06:06:57,433 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 06:06:57,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:57,434 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:57,434 INFO L74 IsIncluded]: Start isIncluded. First operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) Second operand 25 states. [2022-04-28 06:06:57,435 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) Second operand 25 states. [2022-04-28 06:06:57,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:57,437 INFO L93 Difference]: Finished difference Result 25 states and 27 transitions. [2022-04-28 06:06:57,437 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 06:06:57,438 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:57,438 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:57,438 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:57,438 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:57,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 15 states have (on average 1.1333333333333333) internal successors, (17), 16 states have internal predecessors, (17), 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) [2022-04-28 06:06:57,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-04-28 06:06:57,442 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 23 [2022-04-28 06:06:57,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:57,442 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-04-28 06:06:57,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.0) internal successors, (12), 2 states have internal predecessors, (12), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 06:06:57,443 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 25 states and 27 transitions. [2022-04-28 06:06:57,479 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 27 edges. 27 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:57,480 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-04-28 06:06:57,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 06:06:57,481 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:57,482 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:57,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 06:06:57,482 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:57,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:57,484 INFO L85 PathProgramCache]: Analyzing trace with hash 736000694, now seen corresponding path program 1 times [2022-04-28 06:06:57,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:57,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [110494785] [2022-04-28 06:06:57,487 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:57,488 INFO L85 PathProgramCache]: Analyzing trace with hash 736000694, now seen corresponding path program 2 times [2022-04-28 06:06:57,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:57,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85947919] [2022-04-28 06:06:57,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:57,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:57,529 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:57,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [628135990] [2022-04-28 06:06:57,529 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:57,529 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:57,530 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:57,539 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) [2022-04-28 06:06:57,547 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-04-28 06:06:57,627 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 06:06:57,628 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 06:06:57,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 06:06:57,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 06:06:57,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 06:06:57,864 INFO L272 TraceCheckUtils]: 0: Hoare triple {255#true} call ULTIMATE.init(); {255#true} is VALID [2022-04-28 06:06:57,864 INFO L290 TraceCheckUtils]: 1: Hoare triple {255#true} #NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(9, 2);call #Ultimate.allocInit(12, 3); {255#true} is VALID [2022-04-28 06:06:57,864 INFO L290 TraceCheckUtils]: 2: Hoare triple {255#true} assume true; {255#true} is VALID [2022-04-28 06:06:57,864 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {255#true} {255#true} #62#return; {255#true} is VALID [2022-04-28 06:06:57,865 INFO L272 TraceCheckUtils]: 4: Hoare triple {255#true} call #t~ret6 := main(); {255#true} is VALID [2022-04-28 06:06:57,865 INFO L290 TraceCheckUtils]: 5: Hoare triple {255#true} havoc ~z~0;havoc ~k~0;havoc ~x~0;havoc ~y~0;havoc ~c~0;~z~0 := #t~nondet4;havoc #t~nondet4; {255#true} is VALID [2022-04-28 06:06:57,866 INFO L272 TraceCheckUtils]: 6: Hoare triple {255#true} call assume_abort_if_not((if ~z~0 % 4294967296 >= 0 && ~z~0 % 4294967296 <= 1 then 1 else 0)); {255#true} is VALID [2022-04-28 06:06:57,867 INFO L290 TraceCheckUtils]: 7: Hoare triple {255#true} ~cond := #in~cond; {255#true} is VALID [2022-04-28 06:06:57,867 INFO L290 TraceCheckUtils]: 8: Hoare triple {255#true} assume !(0 == ~cond); {255#true} is VALID [2022-04-28 06:06:57,867 INFO L290 TraceCheckUtils]: 9: Hoare triple {255#true} assume true; {255#true} is VALID [2022-04-28 06:06:57,868 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {255#true} {255#true} #54#return; {255#true} is VALID [2022-04-28 06:06:57,869 INFO L290 TraceCheckUtils]: 11: Hoare triple {255#true} ~k~0 := #t~nondet5;havoc #t~nondet5; {255#true} is VALID [2022-04-28 06:06:57,870 INFO L272 TraceCheckUtils]: 12: Hoare triple {255#true} call assume_abort_if_not((if ~k~0 % 4294967296 >= 0 && ~k~0 % 4294967296 <= 1 then 1 else 0)); {255#true} is VALID [2022-04-28 06:06:57,872 INFO L290 TraceCheckUtils]: 13: Hoare triple {255#true} ~cond := #in~cond; {255#true} is VALID [2022-04-28 06:06:57,876 INFO L290 TraceCheckUtils]: 14: Hoare triple {255#true} assume !(0 == ~cond); {255#true} is VALID [2022-04-28 06:06:57,876 INFO L290 TraceCheckUtils]: 15: Hoare triple {255#true} assume true; {255#true} is VALID [2022-04-28 06:06:57,876 INFO L284 TraceCheckUtils]: 16: Hoare quadruple {255#true} {255#true} #56#return; {255#true} is VALID [2022-04-28 06:06:57,877 INFO L290 TraceCheckUtils]: 17: Hoare triple {255#true} ~x~0 := 1;~y~0 := ~z~0 % 4294967296;~c~0 := 1; {311#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:57,878 INFO L290 TraceCheckUtils]: 18: Hoare triple {311#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} assume !false; {311#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} is VALID [2022-04-28 06:06:57,879 INFO L272 TraceCheckUtils]: 19: Hoare triple {311#(and (= (mod main_~z~0 4294967296) main_~y~0) (= main_~x~0 1))} call __VERIFIER_assert((if 0 == 1 + (~x~0 * (~z~0 % 4294967296) - ~x~0 - ~y~0) then 1 else 0)); {318#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 06:06:57,880 INFO L290 TraceCheckUtils]: 20: Hoare triple {318#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {322#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 06:06:57,881 INFO L290 TraceCheckUtils]: 21: Hoare triple {322#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {256#false} is VALID [2022-04-28 06:06:57,891 INFO L290 TraceCheckUtils]: 22: Hoare triple {256#false} assume !false; {256#false} is VALID [2022-04-28 06:06:57,891 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 06:06:57,892 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 06:06:57,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 06:06:57,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85947919] [2022-04-28 06:06:57,892 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 06:06:57,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [628135990] [2022-04-28 06:06:57,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [628135990] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:57,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:57,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 06:06:57,894 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 06:06:57,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [110494785] [2022-04-28 06:06:57,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [110494785] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 06:06:57,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 06:06:57,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 06:06:57,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115338348] [2022-04-28 06:06:57,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 06:06:57,895 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-28 06:06:57,895 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 06:06:57,896 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:57,914 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 20 edges. 20 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 06:06:57,915 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:57,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 06:06:57,917 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-04-28 06:06:57,917 INFO L87 Difference]: Start difference. First operand 25 states and 27 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:58,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:58,067 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2022-04-28 06:06:58,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 06:06:58,068 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 23 [2022-04-28 06:06:58,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 06:06:58,070 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:58,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-04-28 06:06:58,074 INFO L82 GeneralOperation]: Start removeUnreachable. 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 38 transitions. [2022-04-28 06:06:58,076 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 38 transitions. [2022-04-28 06:06:58,110 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 38 edges. 38 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:58,113 INFO L225 Difference]: With dead ends: 35 [2022-04-28 06:06:58,113 INFO L226 Difference]: Without dead ends: 33 [2022-04-28 06:06:58,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-04-28 06:06:58,116 INFO L413 NwaCegarLoop]: 23 mSDtfsCounter, 6 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 06:06:58,120 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 84 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 06:06:58,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-04-28 06:06:58,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2022-04-28 06:06:58,140 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 06:06:58,140 INFO L82 GeneralOperation]: Start isEquivalent. First operand 33 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 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) [2022-04-28 06:06:58,141 INFO L74 IsIncluded]: Start isIncluded. First operand 33 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 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) [2022-04-28 06:06:58,142 INFO L87 Difference]: Start difference. First operand 33 states. Second operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 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) [2022-04-28 06:06:58,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:58,148 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-04-28 06:06:58,148 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-28 06:06:58,148 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:58,149 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:58,153 INFO L74 IsIncluded]: Start isIncluded. First operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 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) Second operand 33 states. [2022-04-28 06:06:58,155 INFO L87 Difference]: Start difference. First operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 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) Second operand 33 states. [2022-04-28 06:06:58,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 06:06:58,157 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2022-04-28 06:06:58,157 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 36 transitions. [2022-04-28 06:06:58,158 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 06:06:58,158 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 06:06:58,158 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 06:06:58,158 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 06:06:58,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 19 states have (on average 1.105263157894737) internal successors, (21), 21 states have internal predecessors, (21), 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) [2022-04-28 06:06:58,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2022-04-28 06:06:58,160 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 23 [2022-04-28 06:06:58,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 06:06:58,161 INFO L495 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2022-04-28 06:06:58,161 INFO L496 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, (5), 2 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-04-28 06:06:58,161 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 31 states and 33 transitions. [2022-04-28 06:06:58,200 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 33 edges. 33 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 06:06:58,200 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2022-04-28 06:06:58,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-04-28 06:06:58,203 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 06:06:58,203 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 06:06:58,226 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-04-28 06:06:58,416 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:58,416 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 06:06:58,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 06:06:58,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1598096837, now seen corresponding path program 1 times [2022-04-28 06:06:58,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 06:06:58,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [62634102] [2022-04-28 06:06:58,417 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 06:06:58,418 INFO L85 PathProgramCache]: Analyzing trace with hash -1598096837, now seen corresponding path program 2 times [2022-04-28 06:06:58,418 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 06:06:58,418 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730136980] [2022-04-28 06:06:58,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 06:06:58,418 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 06:06:58,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 06:06:58,433 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [704928761] [2022-04-28 06:06:58,434 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 06:06:58,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 06:06:58,434 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 06:06:58,435 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) [2022-04-28 06:06:58,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-04-28 06:06:58,485 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 06:06:58,485 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2022-04-28 06:06:58,486 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-04-28 06:06:58,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-04-28 06:06:58,538 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-04-28 06:06:58,538 INFO L130 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found a feasible trace [2022-04-28 06:06:58,538 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-04-28 06:06:58,541 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-04-28 06:06:58,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-04-28 06:06:58,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-04-28 06:06:58,746 INFO L356 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-04-28 06:06:58,749 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-04-28 06:06:58,756 WARN L170 areAnnotationChecker]: reach_errorENTRY has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: assume_abort_if_notENTRY has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: __VERIFIER_assertENTRY has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: reach_errorFINAL has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: L13 has no Hoare annotation [2022-04-28 06:06:58,757 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L26 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L16 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L13-2 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L26-1 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L17 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L16-2 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: assume_abort_if_notEXIT has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 06:06:58,758 WARN L170 areAnnotationChecker]: L28 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: __VERIFIER_assertEXIT has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L28-1 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L35-1 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L48-1 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L34-2 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L34-2 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L34-2 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L34-3 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L35 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2022-04-28 06:06:58,759 WARN L170 areAnnotationChecker]: L48 has no Hoare annotation [2022-04-28 06:06:58,760 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2022-04-28 06:06:58,760 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2022-04-28 06:06:58,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.04 06:06:58 BoogieIcfgContainer [2022-04-28 06:06:58,761 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-04-28 06:06:58,762 INFO L158 Benchmark]: Toolchain (without parser) took 2471.42ms. Allocated memory was 189.8MB in the beginning and 242.2MB in the end (delta: 52.4MB). Free memory was 138.6MB in the beginning and 188.7MB in the end (delta: -50.1MB). Peak memory consumption was 2.7MB. Max. memory is 8.0GB. [2022-04-28 06:06:58,762 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 189.8MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. [2022-04-28 06:06:58,762 INFO L158 Benchmark]: CACSL2BoogieTranslator took 207.96ms. Allocated memory was 189.8MB in the beginning and 242.2MB in the end (delta: 52.4MB). Free memory was 138.3MB in the beginning and 219.0MB in the end (delta: -80.6MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. [2022-04-28 06:06:58,762 INFO L158 Benchmark]: Boogie Preprocessor took 23.95ms. Allocated memory is still 242.2MB. Free memory was 218.6MB in the beginning and 217.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. [2022-04-28 06:06:58,763 INFO L158 Benchmark]: RCFGBuilder took 224.07ms. Allocated memory is still 242.2MB. Free memory was 217.2MB in the beginning and 206.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-04-28 06:06:58,763 INFO L158 Benchmark]: TraceAbstraction took 2010.91ms. Allocated memory is still 242.2MB. Free memory was 205.7MB in the beginning and 188.7MB in the end (delta: 17.0MB). Peak memory consumption was 17.7MB. Max. memory is 8.0GB. [2022-04-28 06:06:58,764 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 0.11ms. Allocated memory is still 189.8MB. Free memory is still 154.7MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 207.96ms. Allocated memory was 189.8MB in the beginning and 242.2MB in the end (delta: 52.4MB). Free memory was 138.3MB in the beginning and 219.0MB in the end (delta: -80.6MB). Peak memory consumption was 11.3MB. Max. memory is 8.0GB. * Boogie Preprocessor took 23.95ms. Allocated memory is still 242.2MB. Free memory was 218.6MB in the beginning and 217.2MB in the end (delta: 1.5MB). Peak memory consumption was 1.0MB. Max. memory is 8.0GB. * RCFGBuilder took 224.07ms. Allocated memory is still 242.2MB. Free memory was 217.2MB in the beginning and 206.0MB in the end (delta: 11.2MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 2010.91ms. Allocated memory is still 242.2MB. Free memory was 205.7MB in the beginning and 188.7MB in the end (delta: 17.0MB). Peak memory consumption was 17.7MB. 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 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L23] unsigned int z, k; [L24] long long x, y, c; [L25] z = __VERIFIER_nondet_uint() [L26] CALL assume_abort_if_not(z>=0 && z<=1) [L13] COND FALSE !(!cond) [L26] RET assume_abort_if_not(z>=0 && z<=1) [L27] k = __VERIFIER_nondet_uint() [L28] CALL assume_abort_if_not(k>=0 && k<=1) [L13] COND FALSE !(!cond) [L28] RET assume_abort_if_not(k>=0 && k<=1) [L30] x = 1 [L31] y = z [L32] c = 1 [L34] COND TRUE 1 [L35] CALL __VERIFIER_assert(x*z - x - y + 1 == 0) [L16] COND FALSE !(!(cond)) [L35] RET __VERIFIER_assert(x*z - x - y + 1 == 0) [L37] COND TRUE !(c < k) [L46] x = x * (z - 1) [L48] CALL __VERIFIER_assert(1 + x - y == 0) [L16] COND TRUE !(cond) [L18] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 28 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 115 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 64 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 32 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 51 mSDtfsCounter, 32 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred in iteration=2, InterpolantAutomatonStates: 8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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! [2022-04-28 06:06:58,799 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...