/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/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound10.i -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-fb4f59a-m [2022-04-28 11:49:26,970 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-04-28 11:49:26,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-04-28 11:49:26,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-04-28 11:49:26,990 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-04-28 11:49:26,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-04-28 11:49:26,992 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-04-28 11:49:26,993 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-04-28 11:49:26,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-04-28 11:49:26,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-04-28 11:49:26,995 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-04-28 11:49:26,996 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-04-28 11:49:26,996 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-04-28 11:49:26,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-04-28 11:49:26,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-04-28 11:49:26,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-04-28 11:49:26,998 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-04-28 11:49:26,999 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-04-28 11:49:27,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-04-28 11:49:27,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-04-28 11:49:27,002 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-04-28 11:49:27,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-04-28 11:49:27,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-04-28 11:49:27,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-04-28 11:49:27,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-04-28 11:49:27,009 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-04-28 11:49:27,009 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-04-28 11:49:27,009 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-04-28 11:49:27,010 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-04-28 11:49:27,010 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-04-28 11:49:27,010 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-04-28 11:49:27,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-04-28 11:49:27,011 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-04-28 11:49:27,011 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-04-28 11:49:27,012 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-04-28 11:49:27,012 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-04-28 11:49:27,013 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-04-28 11:49:27,013 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-04-28 11:49:27,013 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-04-28 11:49:27,013 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-04-28 11:49:27,014 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-04-28 11:49:27,018 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-04-28 11:49:27,018 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-04-28 11:49:27,025 INFO L113 SettingsManager]: Loading preferences was successful [2022-04-28 11:49:27,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-04-28 11:49:27,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-04-28 11:49:27,026 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-04-28 11:49:27,026 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-04-28 11:49:27,026 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-04-28 11:49:27,026 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-04-28 11:49:27,026 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-04-28 11:49:27,026 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-04-28 11:49:27,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-04-28 11:49:27,027 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-04-28 11:49:27,027 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-04-28 11:49:27,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 11:49:27,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-04-28 11:49:27,034 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-04-28 11:49:27,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-04-28 11:49:27,261 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-04-28 11:49:27,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-04-28 11:49:27,280 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-04-28 11:49:27,280 INFO L271 PluginConnector]: Initializing CDTParser... [2022-04-28 11:49:27,281 INFO L275 PluginConnector]: CDTParser initialized [2022-04-28 11:49:27,282 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound10.i [2022-04-28 11:49:27,329 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05134895b/db1fe44d9c5343a3a7239f9112820304/FLAGc75617b2b [2022-04-28 11:49:27,681 INFO L306 CDTParser]: Found 1 translation units. [2022-04-28 11:49:27,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/divbin_unwindbound10.i [2022-04-28 11:49:27,687 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05134895b/db1fe44d9c5343a3a7239f9112820304/FLAGc75617b2b [2022-04-28 11:49:27,697 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/05134895b/db1fe44d9c5343a3a7239f9112820304 [2022-04-28 11:49:27,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-04-28 11:49:27,700 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-04-28 11:49:27,701 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-04-28 11:49:27,701 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-04-28 11:49:27,705 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-04-28 11:49:27,706 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,707 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e405e7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27, skipping insertion in model container [2022-04-28 11:49:27,707 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-04-28 11:49:27,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-04-28 11:49:27,853 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/divbin_unwindbound10.i[950,963] [2022-04-28 11:49:27,864 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 11:49:27,870 INFO L203 MainTranslator]: Completed pre-run [2022-04-28 11:49:27,878 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/divbin_unwindbound10.i[950,963] [2022-04-28 11:49:27,883 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-04-28 11:49:27,892 INFO L208 MainTranslator]: Completed translation [2022-04-28 11:49:27,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27 WrapperNode [2022-04-28 11:49:27,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-04-28 11:49:27,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-04-28 11:49:27,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-04-28 11:49:27,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-04-28 11:49:27,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,901 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,906 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,906 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,910 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,915 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,916 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-04-28 11:49:27,916 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-04-28 11:49:27,916 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-04-28 11:49:27,917 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-04-28 11:49:27,917 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (1/1) ... [2022-04-28 11:49:27,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-04-28 11:49:27,929 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:27,939 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 11:49:27,944 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 11:49:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-04-28 11:49:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-04-28 11:49:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-04-28 11:49:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-04-28 11:49:27,981 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-04-28 11:49:27,982 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-04-28 11:49:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-04-28 11:49:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-04-28 11:49:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2022-04-28 11:49:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2022-04-28 11:49:27,982 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-04-28 11:49:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-04-28 11:49:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2022-04-28 11:49:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-04-28 11:49:27,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-04-28 11:49:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-04-28 11:49:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-04-28 11:49:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-04-28 11:49:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-04-28 11:49:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-04-28 11:49:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-04-28 11:49:27,985 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-04-28 11:49:28,049 INFO L234 CfgBuilder]: Building ICFG [2022-04-28 11:49:28,051 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-04-28 11:49:28,163 INFO L275 CfgBuilder]: Performing block encoding [2022-04-28 11:49:28,168 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-04-28 11:49:28,168 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-04-28 11:49:28,169 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:49:28 BoogieIcfgContainer [2022-04-28 11:49:28,170 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-04-28 11:49:28,171 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-04-28 11:49:28,171 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-04-28 11:49:28,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-04-28 11:49:28,173 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.04 11:49:27" (1/3) ... [2022-04-28 11:49:28,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68718878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:49:28, skipping insertion in model container [2022-04-28 11:49:28,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.04 11:49:27" (2/3) ... [2022-04-28 11:49:28,174 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68718878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.04 11:49:28, skipping insertion in model container [2022-04-28 11:49:28,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.04 11:49:28" (3/3) ... [2022-04-28 11:49:28,175 INFO L111 eAbstractionObserver]: Analyzing ICFG divbin_unwindbound10.i [2022-04-28 11:49:28,185 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-04-28 11:49:28,185 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-04-28 11:49:28,248 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-04-28 11:49:28,253 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@1e22aa74, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@45407d02 [2022-04-28 11:49:28,253 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-04-28 11:49:28,272 INFO L276 IsEmpty]: Start isEmpty. Operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 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 11:49:28,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-04-28 11:49:28,277 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:28,278 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 11:49:28,278 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:28,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:28,282 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 1 times [2022-04-28 11:49:28,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:28,291 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1381059181] [2022-04-28 11:49:28,306 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:28,307 INFO L85 PathProgramCache]: Analyzing trace with hash 878397729, now seen corresponding path program 2 times [2022-04-28 11:49:28,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:28,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369242004] [2022-04-28 11:49:28,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:28,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:28,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:28,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-04-28 11:49:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:28,470 INFO L290 TraceCheckUtils]: 0: Hoare triple {49#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {36#true} is VALID [2022-04-28 11:49:28,470 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-28 11:49:28,471 INFO L284 TraceCheckUtils]: 2: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-28 11:49:28,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-04-28 11:49:28,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:28,481 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 11:49:28,482 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 11:49:28,482 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 11:49:28,482 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-28 11:49:28,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-04-28 11:49:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:28,489 INFO L290 TraceCheckUtils]: 0: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 11:49:28,489 INFO L290 TraceCheckUtils]: 1: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 11:49:28,489 INFO L290 TraceCheckUtils]: 2: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 11:49:28,490 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-28 11:49:28,491 INFO L272 TraceCheckUtils]: 0: Hoare triple {36#true} call ULTIMATE.init(); {49#(and (= ~counter~0 |old(~counter~0)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|))} is VALID [2022-04-28 11:49:28,491 INFO L290 TraceCheckUtils]: 1: Hoare triple {49#(and (= ~counter~0 |old(~counter~0)|) (= |#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);~counter~0 := 0; {36#true} is VALID [2022-04-28 11:49:28,491 INFO L290 TraceCheckUtils]: 2: Hoare triple {36#true} assume true; {36#true} is VALID [2022-04-28 11:49:28,491 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {36#true} {36#true} #89#return; {36#true} is VALID [2022-04-28 11:49:28,491 INFO L272 TraceCheckUtils]: 4: Hoare triple {36#true} call #t~ret5 := main(); {36#true} is VALID [2022-04-28 11:49:28,491 INFO L290 TraceCheckUtils]: 5: Hoare triple {36#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {36#true} is VALID [2022-04-28 11:49:28,492 INFO L272 TraceCheckUtils]: 6: Hoare triple {36#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {36#true} is VALID [2022-04-28 11:49:28,492 INFO L290 TraceCheckUtils]: 7: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 11:49:28,492 INFO L290 TraceCheckUtils]: 8: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 11:49:28,492 INFO L290 TraceCheckUtils]: 9: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 11:49:28,493 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {37#false} {36#true} #81#return; {37#false} is VALID [2022-04-28 11:49:28,493 INFO L272 TraceCheckUtils]: 11: Hoare triple {37#false} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {36#true} is VALID [2022-04-28 11:49:28,493 INFO L290 TraceCheckUtils]: 12: Hoare triple {36#true} ~cond := #in~cond; {36#true} is VALID [2022-04-28 11:49:28,493 INFO L290 TraceCheckUtils]: 13: Hoare triple {36#true} assume 0 == ~cond;assume false; {37#false} is VALID [2022-04-28 11:49:28,493 INFO L290 TraceCheckUtils]: 14: Hoare triple {37#false} assume true; {37#false} is VALID [2022-04-28 11:49:28,494 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {37#false} {37#false} #83#return; {37#false} is VALID [2022-04-28 11:49:28,494 INFO L290 TraceCheckUtils]: 16: Hoare triple {37#false} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {37#false} is VALID [2022-04-28 11:49:28,494 INFO L290 TraceCheckUtils]: 17: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-28 11:49:28,494 INFO L290 TraceCheckUtils]: 18: Hoare triple {37#false} assume !true; {37#false} is VALID [2022-04-28 11:49:28,494 INFO L272 TraceCheckUtils]: 19: Hoare triple {37#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {37#false} is VALID [2022-04-28 11:49:28,494 INFO L290 TraceCheckUtils]: 20: Hoare triple {37#false} ~cond := #in~cond; {37#false} is VALID [2022-04-28 11:49:28,495 INFO L290 TraceCheckUtils]: 21: Hoare triple {37#false} assume 0 == ~cond; {37#false} is VALID [2022-04-28 11:49:28,495 INFO L290 TraceCheckUtils]: 22: Hoare triple {37#false} assume !false; {37#false} is VALID [2022-04-28 11:49:28,495 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 11:49:28,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:28,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369242004] [2022-04-28 11:49:28,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369242004] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:28,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:28,497 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 11:49:28,499 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:28,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1381059181] [2022-04-28 11:49:28,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1381059181] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:28,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:28,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 11:49:28,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1189380249] [2022-04-28 11:49:28,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:28,504 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 11:49:28,505 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:28,507 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 11:49:28,532 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 11:49:28,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 11:49:28,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:28,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 11:49:28,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 11:49:28,560 INFO L87 Difference]: Start difference. First operand has 33 states, 21 states have (on average 1.4761904761904763) internal successors, (31), 22 states have internal predecessors, (31), 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 11:49:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:28,696 INFO L93 Difference]: Finished difference Result 60 states and 84 transitions. [2022-04-28 11:49:28,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 11:49:28,697 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 11:49:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:28,698 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 11:49:28,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-28 11:49:28,705 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 11:49:28,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 84 transitions. [2022-04-28 11:49:28,709 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 84 transitions. [2022-04-28 11:49:28,816 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 84 edges. 84 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:28,824 INFO L225 Difference]: With dead ends: 60 [2022-04-28 11:49:28,824 INFO L226 Difference]: Without dead ends: 29 [2022-04-28 11:49:28,827 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 11:49:28,830 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 10 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 40 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:28,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 40 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:49:28,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-04-28 11:49:28,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2022-04-28 11:49:28,855 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:28,855 INFO L82 GeneralOperation]: Start isEquivalent. First operand 29 states. Second operand has 28 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), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 11:49:28,856 INFO L74 IsIncluded]: Start isIncluded. First operand 29 states. Second operand has 28 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), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 11:49:28,856 INFO L87 Difference]: Start difference. First operand 29 states. Second operand has 28 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), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 11:49:28,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:28,859 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-28 11:49:28,859 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-28 11:49:28,860 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:28,860 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:28,861 INFO L74 IsIncluded]: Start isIncluded. First operand has 28 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), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-28 11:49:28,861 INFO L87 Difference]: Start difference. First operand has 28 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), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand 29 states. [2022-04-28 11:49:28,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:28,864 INFO L93 Difference]: Finished difference Result 29 states and 35 transitions. [2022-04-28 11:49:28,864 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-04-28 11:49:28,866 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:28,866 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:28,866 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:28,867 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:28,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 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), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-04-28 11:49:28,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 34 transitions. [2022-04-28 11:49:28,870 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 34 transitions. Word has length 23 [2022-04-28 11:49:28,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:28,870 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 34 transitions. [2022-04-28 11:49:28,871 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 11:49:28,871 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 28 states and 34 transitions. [2022-04-28 11:49:28,904 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 34 edges. 34 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:28,904 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 34 transitions. [2022-04-28 11:49:28,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-04-28 11:49:28,905 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:28,905 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, 1, 1] [2022-04-28 11:49:28,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-04-28 11:49:28,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:28,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:28,907 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 1 times [2022-04-28 11:49:28,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:28,908 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1681677395] [2022-04-28 11:49:28,910 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:28,910 INFO L85 PathProgramCache]: Analyzing trace with hash 994169231, now seen corresponding path program 2 times [2022-04-28 11:49:28,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:28,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042761348] [2022-04-28 11:49:28,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:28,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:28,947 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:28,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [587505864] [2022-04-28 11:49:28,948 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:28,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:28,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:28,951 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 11:49:28,960 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 11:49:29,008 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 11:49:29,009 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:49:29,010 INFO L263 TraceCheckSpWp]: Trace formula consists of 81 conjuncts, 5 conjunts are in the unsatisfiable core [2022-04-28 11:49:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:29,039 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:49:29,196 INFO L272 TraceCheckUtils]: 0: Hoare triple {286#true} call ULTIMATE.init(); {286#true} is VALID [2022-04-28 11:49:29,197 INFO L290 TraceCheckUtils]: 1: Hoare triple {286#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);~counter~0 := 0; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,197 INFO L290 TraceCheckUtils]: 2: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,198 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {294#(<= ~counter~0 0)} {286#true} #89#return; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,198 INFO L272 TraceCheckUtils]: 4: Hoare triple {294#(<= ~counter~0 0)} call #t~ret5 := main(); {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,199 INFO L290 TraceCheckUtils]: 5: Hoare triple {294#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,199 INFO L272 TraceCheckUtils]: 6: Hoare triple {294#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,200 INFO L290 TraceCheckUtils]: 7: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,200 INFO L290 TraceCheckUtils]: 8: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,200 INFO L290 TraceCheckUtils]: 9: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,201 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #81#return; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,201 INFO L272 TraceCheckUtils]: 11: Hoare triple {294#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,202 INFO L290 TraceCheckUtils]: 12: Hoare triple {294#(<= ~counter~0 0)} ~cond := #in~cond; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,202 INFO L290 TraceCheckUtils]: 13: Hoare triple {294#(<= ~counter~0 0)} assume !(0 == ~cond); {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,203 INFO L290 TraceCheckUtils]: 14: Hoare triple {294#(<= ~counter~0 0)} assume true; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,203 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {294#(<= ~counter~0 0)} {294#(<= ~counter~0 0)} #83#return; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,204 INFO L290 TraceCheckUtils]: 16: Hoare triple {294#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {294#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,204 INFO L290 TraceCheckUtils]: 17: Hoare triple {294#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {343#(<= |main_#t~post3| 0)} is VALID [2022-04-28 11:49:29,205 INFO L290 TraceCheckUtils]: 18: Hoare triple {343#(<= |main_#t~post3| 0)} assume !(#t~post3 < 10);havoc #t~post3; {287#false} is VALID [2022-04-28 11:49:29,205 INFO L290 TraceCheckUtils]: 19: Hoare triple {287#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {287#false} is VALID [2022-04-28 11:49:29,205 INFO L290 TraceCheckUtils]: 20: Hoare triple {287#false} assume !(#t~post4 < 10);havoc #t~post4; {287#false} is VALID [2022-04-28 11:49:29,205 INFO L272 TraceCheckUtils]: 21: Hoare triple {287#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {287#false} is VALID [2022-04-28 11:49:29,205 INFO L290 TraceCheckUtils]: 22: Hoare triple {287#false} ~cond := #in~cond; {287#false} is VALID [2022-04-28 11:49:29,206 INFO L290 TraceCheckUtils]: 23: Hoare triple {287#false} assume 0 == ~cond; {287#false} is VALID [2022-04-28 11:49:29,206 INFO L290 TraceCheckUtils]: 24: Hoare triple {287#false} assume !false; {287#false} is VALID [2022-04-28 11:49:29,206 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 11:49:29,206 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 11:49:29,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042761348] [2022-04-28 11:49:29,207 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:49:29,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587505864] [2022-04-28 11:49:29,207 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587505864] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:29,207 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:29,207 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 11:49:29,208 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:29,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1681677395] [2022-04-28 11:49:29,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1681677395] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:29,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:29,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-04-28 11:49:29,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947746335] [2022-04-28 11:49:29,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:29,209 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-28 11:49:29,210 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:29,210 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:29,226 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 22 edges. 22 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:29,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-04-28 11:49:29,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:29,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-04-28 11:49:29,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 11:49:29,227 INFO L87 Difference]: Start difference. First operand 28 states and 34 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:29,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:29,301 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2022-04-28 11:49:29,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-04-28 11:49:29,301 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 25 [2022-04-28 11:49:29,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:29,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:29,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-28 11:49:29,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:29,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 52 transitions. [2022-04-28 11:49:29,306 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 4 states and 52 transitions. [2022-04-28 11:49:29,340 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 52 edges. 52 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:29,341 INFO L225 Difference]: With dead ends: 42 [2022-04-28 11:49:29,341 INFO L226 Difference]: Without dead ends: 30 [2022-04-28 11:49:29,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-04-28 11:49:29,342 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:29,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 81 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:49:29,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-04-28 11:49:29,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-04-28 11:49:29,358 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:29,358 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 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 11:49:29,358 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 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 11:49:29,359 INFO L87 Difference]: Start difference. First operand 30 states. Second operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 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 11:49:29,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:29,361 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-28 11:49:29,361 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-28 11:49:29,361 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:29,361 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:29,362 INFO L74 IsIncluded]: Start isIncluded. First operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 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 30 states. [2022-04-28 11:49:29,362 INFO L87 Difference]: Start difference. First operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 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 30 states. [2022-04-28 11:49:29,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:29,363 INFO L93 Difference]: Finished difference Result 30 states and 36 transitions. [2022-04-28 11:49:29,364 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-28 11:49:29,364 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:29,364 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:29,364 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:29,364 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:29,366 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 20 states have (on average 1.3) internal successors, (26), 21 states have internal predecessors, (26), 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 11:49:29,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-04-28 11:49:29,367 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 25 [2022-04-28 11:49:29,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:29,368 INFO L495 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-04-28 11:49:29,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 3 states have internal predecessors, (14), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:29,368 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 30 states and 36 transitions. [2022-04-28 11:49:29,400 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 36 edges. 36 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:29,400 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-04-28 11:49:29,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 11:49:29,405 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:29,405 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, 1, 1, 1] [2022-04-28 11:49:29,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-04-28 11:49:29,627 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 11:49:29,627 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:29,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:29,628 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 1 times [2022-04-28 11:49:29,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:29,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [393863659] [2022-04-28 11:49:29,629 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:29,629 INFO L85 PathProgramCache]: Analyzing trace with hash 422434646, now seen corresponding path program 2 times [2022-04-28 11:49:29,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:29,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626279426] [2022-04-28 11:49:29,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:29,651 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:29,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [27822448] [2022-04-28 11:49:29,652 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:29,652 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:29,652 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:29,657 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 11:49:29,658 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 11:49:29,698 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 11:49:29,698 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:49:29,699 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 11:49:29,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:29,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:49:29,881 INFO L272 TraceCheckUtils]: 0: Hoare triple {568#true} call ULTIMATE.init(); {568#true} is VALID [2022-04-28 11:49:29,881 INFO L290 TraceCheckUtils]: 1: Hoare triple {568#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);~counter~0 := 0; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,882 INFO L290 TraceCheckUtils]: 2: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,882 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {576#(<= ~counter~0 0)} {568#true} #89#return; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,883 INFO L272 TraceCheckUtils]: 4: Hoare triple {576#(<= ~counter~0 0)} call #t~ret5 := main(); {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,883 INFO L290 TraceCheckUtils]: 5: Hoare triple {576#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,883 INFO L272 TraceCheckUtils]: 6: Hoare triple {576#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,884 INFO L290 TraceCheckUtils]: 7: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,884 INFO L290 TraceCheckUtils]: 8: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,884 INFO L290 TraceCheckUtils]: 9: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,885 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #81#return; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,885 INFO L272 TraceCheckUtils]: 11: Hoare triple {576#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,886 INFO L290 TraceCheckUtils]: 12: Hoare triple {576#(<= ~counter~0 0)} ~cond := #in~cond; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,886 INFO L290 TraceCheckUtils]: 13: Hoare triple {576#(<= ~counter~0 0)} assume !(0 == ~cond); {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,886 INFO L290 TraceCheckUtils]: 14: Hoare triple {576#(<= ~counter~0 0)} assume true; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,889 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {576#(<= ~counter~0 0)} {576#(<= ~counter~0 0)} #83#return; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,889 INFO L290 TraceCheckUtils]: 16: Hoare triple {576#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {576#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:29,890 INFO L290 TraceCheckUtils]: 17: Hoare triple {576#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {625#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:29,891 INFO L290 TraceCheckUtils]: 18: Hoare triple {625#(<= ~counter~0 1)} assume !!(#t~post3 < 10);havoc #t~post3; {625#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:29,891 INFO L290 TraceCheckUtils]: 19: Hoare triple {625#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {625#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:29,891 INFO L290 TraceCheckUtils]: 20: Hoare triple {625#(<= ~counter~0 1)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {635#(<= |main_#t~post4| 1)} is VALID [2022-04-28 11:49:29,892 INFO L290 TraceCheckUtils]: 21: Hoare triple {635#(<= |main_#t~post4| 1)} assume !(#t~post4 < 10);havoc #t~post4; {569#false} is VALID [2022-04-28 11:49:29,892 INFO L272 TraceCheckUtils]: 22: Hoare triple {569#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {569#false} is VALID [2022-04-28 11:49:29,892 INFO L290 TraceCheckUtils]: 23: Hoare triple {569#false} ~cond := #in~cond; {569#false} is VALID [2022-04-28 11:49:29,892 INFO L290 TraceCheckUtils]: 24: Hoare triple {569#false} assume 0 == ~cond; {569#false} is VALID [2022-04-28 11:49:29,892 INFO L290 TraceCheckUtils]: 25: Hoare triple {569#false} assume !false; {569#false} is VALID [2022-04-28 11:49:29,893 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 11:49:29,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 11:49:29,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:29,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626279426] [2022-04-28 11:49:29,893 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:49:29,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [27822448] [2022-04-28 11:49:29,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [27822448] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:29,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:29,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 11:49:29,894 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:29,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [393863659] [2022-04-28 11:49:29,894 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [393863659] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:29,894 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:29,894 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 11:49:29,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767073940] [2022-04-28 11:49:29,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:29,895 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-28 11:49:29,895 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:29,895 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:29,911 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:29,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 11:49:29,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:29,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 11:49:29,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 11:49:29,912 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:32,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:32,109 INFO L93 Difference]: Finished difference Result 41 states and 48 transitions. [2022-04-28 11:49:32,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-04-28 11:49:32,109 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2022-04-28 11:49:32,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:32,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:32,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-28 11:49:32,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:32,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 48 transitions. [2022-04-28 11:49:32,113 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 5 states and 48 transitions. [2022-04-28 11:49:32,149 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 48 edges. 48 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:32,150 INFO L225 Difference]: With dead ends: 41 [2022-04-28 11:49:32,150 INFO L226 Difference]: Without dead ends: 34 [2022-04-28 11:49:32,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-04-28 11:49:32,151 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 7 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:32,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 82 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:49:32,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2022-04-28 11:49:32,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2022-04-28 11:49:32,168 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:32,171 INFO L82 GeneralOperation]: Start isEquivalent. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 11:49:32,173 INFO L74 IsIncluded]: Start isIncluded. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 11:49:32,173 INFO L87 Difference]: Start difference. First operand 34 states. Second operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 11:49:32,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:32,177 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-28 11:49:32,177 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-28 11:49:32,178 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:32,179 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:32,179 INFO L74 IsIncluded]: Start isIncluded. First operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 34 states. [2022-04-28 11:49:32,179 INFO L87 Difference]: Start difference. First operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 34 states. [2022-04-28 11:49:32,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:32,185 INFO L93 Difference]: Finished difference Result 34 states and 41 transitions. [2022-04-28 11:49:32,185 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2022-04-28 11:49:32,185 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:32,186 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:32,186 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:32,186 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:32,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 23 states have (on average 1.3043478260869565) internal successors, (30), 24 states have internal predecessors, (30), 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 11:49:32,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2022-04-28 11:49:32,187 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 26 [2022-04-28 11:49:32,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:32,187 INFO L495 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2022-04-28 11:49:32,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 4 states have internal predecessors, (15), 3 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-04-28 11:49:32,188 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 33 states and 40 transitions. [2022-04-28 11:49:32,239 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 40 edges. 40 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:32,239 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2022-04-28 11:49:32,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-04-28 11:49:32,241 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:32,241 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, 1, 1, 1] [2022-04-28 11:49:32,260 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-04-28 11:49:32,455 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 11:49:32,456 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:32,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:32,456 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 1 times [2022-04-28 11:49:32,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:32,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [592960095] [2022-04-28 11:49:32,457 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:32,457 INFO L85 PathProgramCache]: Analyzing trace with hash 424222106, now seen corresponding path program 2 times [2022-04-28 11:49:32,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:32,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [827406828] [2022-04-28 11:49:32,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:32,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:32,470 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:32,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [499753583] [2022-04-28 11:49:32,470 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:32,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:32,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:32,472 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) [2022-04-28 11:49:32,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-04-28 11:49:32,511 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-04-28 11:49:32,511 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:49:32,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 10 conjunts are in the unsatisfiable core [2022-04-28 11:49:32,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:32,523 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:49:32,929 INFO L272 TraceCheckUtils]: 0: Hoare triple {866#true} call ULTIMATE.init(); {866#true} is VALID [2022-04-28 11:49:32,929 INFO L290 TraceCheckUtils]: 1: Hoare triple {866#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);~counter~0 := 0; {866#true} is VALID [2022-04-28 11:49:32,930 INFO L290 TraceCheckUtils]: 2: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-28 11:49:32,930 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {866#true} {866#true} #89#return; {866#true} is VALID [2022-04-28 11:49:32,930 INFO L272 TraceCheckUtils]: 4: Hoare triple {866#true} call #t~ret5 := main(); {866#true} is VALID [2022-04-28 11:49:32,930 INFO L290 TraceCheckUtils]: 5: Hoare triple {866#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {866#true} is VALID [2022-04-28 11:49:32,930 INFO L272 TraceCheckUtils]: 6: Hoare triple {866#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {866#true} is VALID [2022-04-28 11:49:32,930 INFO L290 TraceCheckUtils]: 7: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-28 11:49:32,931 INFO L290 TraceCheckUtils]: 8: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-28 11:49:32,931 INFO L290 TraceCheckUtils]: 9: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-28 11:49:32,931 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {866#true} {866#true} #81#return; {866#true} is VALID [2022-04-28 11:49:32,931 INFO L272 TraceCheckUtils]: 11: Hoare triple {866#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {866#true} is VALID [2022-04-28 11:49:32,931 INFO L290 TraceCheckUtils]: 12: Hoare triple {866#true} ~cond := #in~cond; {866#true} is VALID [2022-04-28 11:49:32,931 INFO L290 TraceCheckUtils]: 13: Hoare triple {866#true} assume !(0 == ~cond); {866#true} is VALID [2022-04-28 11:49:32,931 INFO L290 TraceCheckUtils]: 14: Hoare triple {866#true} assume true; {866#true} is VALID [2022-04-28 11:49:32,932 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {866#true} {866#true} #83#return; {866#true} is VALID [2022-04-28 11:49:32,932 INFO L290 TraceCheckUtils]: 16: Hoare triple {866#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:49:32,933 INFO L290 TraceCheckUtils]: 17: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:49:32,935 INFO L290 TraceCheckUtils]: 18: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post3 < 10);havoc #t~post3; {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:49:32,936 INFO L290 TraceCheckUtils]: 19: Hoare triple {919#(and (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:49:32,936 INFO L290 TraceCheckUtils]: 20: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:49:32,936 INFO L290 TraceCheckUtils]: 21: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} assume !!(#t~post4 < 10);havoc #t~post4; {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} is VALID [2022-04-28 11:49:32,937 INFO L272 TraceCheckUtils]: 22: Hoare triple {929#(and (not (<= (mod main_~b~0 4294967296) (mod main_~r~0 4294967296))) (= main_~A~0 main_~r~0) (= main_~q~0 0))} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {939#(<= 1 |__VERIFIER_assert_#in~cond|)} is VALID [2022-04-28 11:49:32,938 INFO L290 TraceCheckUtils]: 23: Hoare triple {939#(<= 1 |__VERIFIER_assert_#in~cond|)} ~cond := #in~cond; {943#(<= 1 __VERIFIER_assert_~cond)} is VALID [2022-04-28 11:49:32,938 INFO L290 TraceCheckUtils]: 24: Hoare triple {943#(<= 1 __VERIFIER_assert_~cond)} assume 0 == ~cond; {867#false} is VALID [2022-04-28 11:49:32,938 INFO L290 TraceCheckUtils]: 25: Hoare triple {867#false} assume !false; {867#false} is VALID [2022-04-28 11:49:32,938 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 11:49:32,939 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 11:49:32,939 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:32,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [827406828] [2022-04-28 11:49:32,939 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:49:32,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [499753583] [2022-04-28 11:49:32,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [499753583] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:32,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:32,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 11:49:32,940 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:32,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [592960095] [2022-04-28 11:49:32,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [592960095] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:32,940 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:32,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 11:49:32,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159494696] [2022-04-28 11:49:32,940 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:32,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 26 [2022-04-28 11:49:32,941 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:32,941 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 11:49:32,958 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 23 edges. 23 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:32,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 11:49:32,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:32,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 11:49:32,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-04-28 11:49:32,960 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 11:49:33,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:33,221 INFO L93 Difference]: Finished difference Result 50 states and 63 transitions. [2022-04-28 11:49:33,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 11:49:33,223 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 26 [2022-04-28 11:49:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:33,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 11:49:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-28 11:49:33,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 11:49:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 57 transitions. [2022-04-28 11:49:33,231 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 57 transitions. [2022-04-28 11:49:33,283 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 57 edges. 57 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:33,288 INFO L225 Difference]: With dead ends: 50 [2022-04-28 11:49:33,288 INFO L226 Difference]: Without dead ends: 46 [2022-04-28 11:49:33,288 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-04-28 11:49:33,290 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 18 mSDsluCounter, 76 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:33,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 104 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-04-28 11:49:33,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2022-04-28 11:49:33,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 39. [2022-04-28 11:49:33,316 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:33,317 INFO L82 GeneralOperation]: Start isEquivalent. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:33,318 INFO L74 IsIncluded]: Start isIncluded. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:33,318 INFO L87 Difference]: Start difference. First operand 46 states. Second operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:33,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:33,324 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-28 11:49:33,324 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-28 11:49:33,324 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:33,324 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:33,325 INFO L74 IsIncluded]: Start isIncluded. First operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-28 11:49:33,325 INFO L87 Difference]: Start difference. First operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 46 states. [2022-04-28 11:49:33,327 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:33,327 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2022-04-28 11:49:33,328 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 55 transitions. [2022-04-28 11:49:33,328 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:33,328 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:33,329 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:33,329 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:33,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 27 states have (on average 1.2592592592592593) internal successors, (34), 28 states have internal predecessors, (34), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2022-04-28 11:49:33,337 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 26 [2022-04-28 11:49:33,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:33,338 INFO L495 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2022-04-28 11:49:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.5) internal successors, (15), 5 states have internal predecessors, (15), 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 11:49:33,338 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 39 states and 46 transitions. [2022-04-28 11:49:33,388 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 46 edges. 46 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:33,389 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2022-04-28 11:49:33,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-28 11:49:33,389 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:33,389 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1, 1] [2022-04-28 11:49:33,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-04-28 11:49:33,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:33,606 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:33,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:33,606 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 1 times [2022-04-28 11:49:33,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:33,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1792903570] [2022-04-28 11:49:33,607 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:33,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1733722638, now seen corresponding path program 2 times [2022-04-28 11:49:33,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:33,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800007338] [2022-04-28 11:49:33,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:33,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:33,624 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:33,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [227064673] [2022-04-28 11:49:33,625 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:33,625 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:33,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:33,626 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) [2022-04-28 11:49:33,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-04-28 11:49:33,671 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 11:49:33,672 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:49:33,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 9 conjunts are in the unsatisfiable core [2022-04-28 11:49:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:33,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:49:33,873 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-28 11:49:33,874 INFO L290 TraceCheckUtils]: 1: Hoare triple {1221#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);~counter~0 := 0; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,874 INFO L290 TraceCheckUtils]: 2: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,875 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1229#(<= ~counter~0 0)} {1221#true} #89#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,876 INFO L272 TraceCheckUtils]: 4: Hoare triple {1229#(<= ~counter~0 0)} call #t~ret5 := main(); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,876 INFO L290 TraceCheckUtils]: 5: Hoare triple {1229#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,877 INFO L272 TraceCheckUtils]: 6: Hoare triple {1229#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,878 INFO L290 TraceCheckUtils]: 7: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,878 INFO L290 TraceCheckUtils]: 8: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,899 INFO L290 TraceCheckUtils]: 9: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,902 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #81#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,903 INFO L272 TraceCheckUtils]: 11: Hoare triple {1229#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,903 INFO L290 TraceCheckUtils]: 12: Hoare triple {1229#(<= ~counter~0 0)} ~cond := #in~cond; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,904 INFO L290 TraceCheckUtils]: 13: Hoare triple {1229#(<= ~counter~0 0)} assume !(0 == ~cond); {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,904 INFO L290 TraceCheckUtils]: 14: Hoare triple {1229#(<= ~counter~0 0)} assume true; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,905 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1229#(<= ~counter~0 0)} {1229#(<= ~counter~0 0)} #83#return; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,905 INFO L290 TraceCheckUtils]: 16: Hoare triple {1229#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1229#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:33,906 INFO L290 TraceCheckUtils]: 17: Hoare triple {1229#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1278#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:33,906 INFO L290 TraceCheckUtils]: 18: Hoare triple {1278#(<= ~counter~0 1)} assume !!(#t~post3 < 10);havoc #t~post3; {1278#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:33,906 INFO L290 TraceCheckUtils]: 19: Hoare triple {1278#(<= ~counter~0 1)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1278#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:33,907 INFO L290 TraceCheckUtils]: 20: Hoare triple {1278#(<= ~counter~0 1)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,907 INFO L290 TraceCheckUtils]: 21: Hoare triple {1288#(<= ~counter~0 2)} assume !!(#t~post4 < 10);havoc #t~post4; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,908 INFO L272 TraceCheckUtils]: 22: Hoare triple {1288#(<= ~counter~0 2)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,908 INFO L290 TraceCheckUtils]: 23: Hoare triple {1288#(<= ~counter~0 2)} ~cond := #in~cond; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,909 INFO L290 TraceCheckUtils]: 24: Hoare triple {1288#(<= ~counter~0 2)} assume !(0 == ~cond); {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,909 INFO L290 TraceCheckUtils]: 25: Hoare triple {1288#(<= ~counter~0 2)} assume true; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,910 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1288#(<= ~counter~0 2)} {1288#(<= ~counter~0 2)} #85#return; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,910 INFO L290 TraceCheckUtils]: 27: Hoare triple {1288#(<= ~counter~0 2)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,910 INFO L290 TraceCheckUtils]: 28: Hoare triple {1288#(<= ~counter~0 2)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1288#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:33,911 INFO L290 TraceCheckUtils]: 29: Hoare triple {1288#(<= ~counter~0 2)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1316#(<= |main_#t~post4| 2)} is VALID [2022-04-28 11:49:33,911 INFO L290 TraceCheckUtils]: 30: Hoare triple {1316#(<= |main_#t~post4| 2)} assume !(#t~post4 < 10);havoc #t~post4; {1222#false} is VALID [2022-04-28 11:49:33,911 INFO L272 TraceCheckUtils]: 31: Hoare triple {1222#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1222#false} is VALID [2022-04-28 11:49:33,911 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-28 11:49:33,911 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-28 11:49:33,911 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-28 11:49:33,912 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 11:49:33,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 11:49:34,118 INFO L290 TraceCheckUtils]: 34: Hoare triple {1222#false} assume !false; {1222#false} is VALID [2022-04-28 11:49:34,118 INFO L290 TraceCheckUtils]: 33: Hoare triple {1222#false} assume 0 == ~cond; {1222#false} is VALID [2022-04-28 11:49:34,118 INFO L290 TraceCheckUtils]: 32: Hoare triple {1222#false} ~cond := #in~cond; {1222#false} is VALID [2022-04-28 11:49:34,118 INFO L272 TraceCheckUtils]: 31: Hoare triple {1222#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1222#false} is VALID [2022-04-28 11:49:34,119 INFO L290 TraceCheckUtils]: 30: Hoare triple {1344#(< |main_#t~post4| 10)} assume !(#t~post4 < 10);havoc #t~post4; {1222#false} is VALID [2022-04-28 11:49:34,120 INFO L290 TraceCheckUtils]: 29: Hoare triple {1348#(< ~counter~0 10)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1344#(< |main_#t~post4| 10)} is VALID [2022-04-28 11:49:34,121 INFO L290 TraceCheckUtils]: 28: Hoare triple {1348#(< ~counter~0 10)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1348#(< ~counter~0 10)} is VALID [2022-04-28 11:49:34,121 INFO L290 TraceCheckUtils]: 27: Hoare triple {1348#(< ~counter~0 10)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1348#(< ~counter~0 10)} is VALID [2022-04-28 11:49:34,122 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1221#true} {1348#(< ~counter~0 10)} #85#return; {1348#(< ~counter~0 10)} is VALID [2022-04-28 11:49:34,122 INFO L290 TraceCheckUtils]: 25: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-28 11:49:34,122 INFO L290 TraceCheckUtils]: 24: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-28 11:49:34,122 INFO L290 TraceCheckUtils]: 23: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-28 11:49:34,122 INFO L272 TraceCheckUtils]: 22: Hoare triple {1348#(< ~counter~0 10)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1221#true} is VALID [2022-04-28 11:49:34,122 INFO L290 TraceCheckUtils]: 21: Hoare triple {1348#(< ~counter~0 10)} assume !!(#t~post4 < 10);havoc #t~post4; {1348#(< ~counter~0 10)} is VALID [2022-04-28 11:49:34,123 INFO L290 TraceCheckUtils]: 20: Hoare triple {1376#(< ~counter~0 9)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1348#(< ~counter~0 10)} is VALID [2022-04-28 11:49:34,123 INFO L290 TraceCheckUtils]: 19: Hoare triple {1376#(< ~counter~0 9)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1376#(< ~counter~0 9)} is VALID [2022-04-28 11:49:34,124 INFO L290 TraceCheckUtils]: 18: Hoare triple {1376#(< ~counter~0 9)} assume !!(#t~post3 < 10);havoc #t~post3; {1376#(< ~counter~0 9)} is VALID [2022-04-28 11:49:34,124 INFO L290 TraceCheckUtils]: 17: Hoare triple {1386#(< ~counter~0 8)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1376#(< ~counter~0 9)} is VALID [2022-04-28 11:49:34,125 INFO L290 TraceCheckUtils]: 16: Hoare triple {1386#(< ~counter~0 8)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,125 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1221#true} {1386#(< ~counter~0 8)} #83#return; {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,125 INFO L290 TraceCheckUtils]: 14: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-28 11:49:34,126 INFO L290 TraceCheckUtils]: 13: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-28 11:49:34,126 INFO L290 TraceCheckUtils]: 12: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-28 11:49:34,126 INFO L272 TraceCheckUtils]: 11: Hoare triple {1386#(< ~counter~0 8)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1221#true} is VALID [2022-04-28 11:49:34,126 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1221#true} {1386#(< ~counter~0 8)} #81#return; {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,126 INFO L290 TraceCheckUtils]: 9: Hoare triple {1221#true} assume true; {1221#true} is VALID [2022-04-28 11:49:34,126 INFO L290 TraceCheckUtils]: 8: Hoare triple {1221#true} assume !(0 == ~cond); {1221#true} is VALID [2022-04-28 11:49:34,126 INFO L290 TraceCheckUtils]: 7: Hoare triple {1221#true} ~cond := #in~cond; {1221#true} is VALID [2022-04-28 11:49:34,127 INFO L272 TraceCheckUtils]: 6: Hoare triple {1386#(< ~counter~0 8)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1221#true} is VALID [2022-04-28 11:49:34,127 INFO L290 TraceCheckUtils]: 5: Hoare triple {1386#(< ~counter~0 8)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,127 INFO L272 TraceCheckUtils]: 4: Hoare triple {1386#(< ~counter~0 8)} call #t~ret5 := main(); {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,128 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1386#(< ~counter~0 8)} {1221#true} #89#return; {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,128 INFO L290 TraceCheckUtils]: 2: Hoare triple {1386#(< ~counter~0 8)} assume true; {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,128 INFO L290 TraceCheckUtils]: 1: Hoare triple {1221#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);~counter~0 := 0; {1386#(< ~counter~0 8)} is VALID [2022-04-28 11:49:34,129 INFO L272 TraceCheckUtils]: 0: Hoare triple {1221#true} call ULTIMATE.init(); {1221#true} is VALID [2022-04-28 11:49:34,129 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 11:49:34,129 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:34,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800007338] [2022-04-28 11:49:34,129 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:49:34,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [227064673] [2022-04-28 11:49:34,129 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [227064673] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 11:49:34,129 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 11:49:34,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-04-28 11:49:34,130 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:34,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1792903570] [2022-04-28 11:49:34,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1792903570] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:34,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:34,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-04-28 11:49:34,130 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [512701361] [2022-04-28 11:49:34,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:34,131 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-04-28 11:49:34,131 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:34,131 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:34,153 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:34,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-04-28 11:49:34,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:34,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-04-28 11:49:34,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-04-28 11:49:34,154 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:34,328 INFO L93 Difference]: Finished difference Result 64 states and 75 transitions. [2022-04-28 11:49:34,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-04-28 11:49:34,328 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 35 [2022-04-28 11:49:34,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:34,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:34,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-28 11:49:34,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:34,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 63 transitions. [2022-04-28 11:49:34,331 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 7 states and 63 transitions. [2022-04-28 11:49:34,366 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:34,367 INFO L225 Difference]: With dead ends: 64 [2022-04-28 11:49:34,367 INFO L226 Difference]: Without dead ends: 57 [2022-04-28 11:49:34,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-04-28 11:49:34,368 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 14 mSDsluCounter, 83 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 115 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:34,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 115 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:49:34,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-04-28 11:49:34,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 51. [2022-04-28 11:49:34,413 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:34,413 INFO L82 GeneralOperation]: Start isEquivalent. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:34,413 INFO L74 IsIncluded]: Start isIncluded. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:34,413 INFO L87 Difference]: Start difference. First operand 57 states. Second operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:34,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:34,415 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-28 11:49:34,415 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-28 11:49:34,415 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:34,415 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:34,415 INFO L74 IsIncluded]: Start isIncluded. First operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 57 states. [2022-04-28 11:49:34,416 INFO L87 Difference]: Start difference. First operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 57 states. [2022-04-28 11:49:34,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:34,417 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2022-04-28 11:49:34,417 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 68 transitions. [2022-04-28 11:49:34,417 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:34,417 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:34,417 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:34,417 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:34,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 37 states have (on average 1.2432432432432432) internal successors, (46), 38 states have internal predecessors, (46), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:34,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 60 transitions. [2022-04-28 11:49:34,419 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 60 transitions. Word has length 35 [2022-04-28 11:49:34,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:34,419 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 60 transitions. [2022-04-28 11:49:34,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 5 states have internal predecessors, (22), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:34,419 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 51 states and 60 transitions. [2022-04-28 11:49:34,482 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 60 edges. 60 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:34,482 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 60 transitions. [2022-04-28 11:49:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-04-28 11:49:34,483 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:34,483 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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] [2022-04-28 11:49:34,500 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-04-28 11:49:34,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:34,684 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:34,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:34,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 1 times [2022-04-28 11:49:34,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:34,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2034317169] [2022-04-28 11:49:34,684 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:34,685 INFO L85 PathProgramCache]: Analyzing trace with hash -1731935178, now seen corresponding path program 2 times [2022-04-28 11:49:34,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:34,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [577665688] [2022-04-28 11:49:34,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:34,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:34,698 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:34,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2048003249] [2022-04-28 11:49:34,698 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:34,698 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:34,698 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:34,699 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 11:49:34,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-04-28 11:49:34,737 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 11:49:34,737 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:49:34,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 3 conjunts are in the unsatisfiable core [2022-04-28 11:49:34,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:34,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:49:34,815 INFO L272 TraceCheckUtils]: 0: Hoare triple {1786#true} call ULTIMATE.init(); {1786#true} is VALID [2022-04-28 11:49:34,815 INFO L290 TraceCheckUtils]: 1: Hoare triple {1786#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);~counter~0 := 0; {1786#true} is VALID [2022-04-28 11:49:34,815 INFO L290 TraceCheckUtils]: 2: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 11:49:34,815 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {1786#true} {1786#true} #89#return; {1786#true} is VALID [2022-04-28 11:49:34,815 INFO L272 TraceCheckUtils]: 4: Hoare triple {1786#true} call #t~ret5 := main(); {1786#true} is VALID [2022-04-28 11:49:34,816 INFO L290 TraceCheckUtils]: 5: Hoare triple {1786#true} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {1786#true} is VALID [2022-04-28 11:49:34,816 INFO L272 TraceCheckUtils]: 6: Hoare triple {1786#true} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {1786#true} is VALID [2022-04-28 11:49:34,816 INFO L290 TraceCheckUtils]: 7: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L290 TraceCheckUtils]: 8: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L290 TraceCheckUtils]: 9: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {1786#true} {1786#true} #81#return; {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L272 TraceCheckUtils]: 11: Hoare triple {1786#true} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L290 TraceCheckUtils]: 12: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L290 TraceCheckUtils]: 13: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L290 TraceCheckUtils]: 14: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 11:49:34,817 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {1786#true} {1786#true} #83#return; {1786#true} is VALID [2022-04-28 11:49:34,818 INFO L290 TraceCheckUtils]: 16: Hoare triple {1786#true} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 11:49:34,821 INFO L290 TraceCheckUtils]: 17: Hoare triple {1839#(= main_~B~0 main_~b~0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 11:49:34,822 INFO L290 TraceCheckUtils]: 18: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(#t~post3 < 10);havoc #t~post3; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 11:49:34,823 INFO L290 TraceCheckUtils]: 19: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 11:49:34,824 INFO L290 TraceCheckUtils]: 20: Hoare triple {1839#(= main_~B~0 main_~b~0)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 11:49:34,824 INFO L290 TraceCheckUtils]: 21: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(#t~post4 < 10);havoc #t~post4; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 11:49:34,825 INFO L272 TraceCheckUtils]: 22: Hoare triple {1839#(= main_~B~0 main_~b~0)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1786#true} is VALID [2022-04-28 11:49:34,825 INFO L290 TraceCheckUtils]: 23: Hoare triple {1786#true} ~cond := #in~cond; {1786#true} is VALID [2022-04-28 11:49:34,825 INFO L290 TraceCheckUtils]: 24: Hoare triple {1786#true} assume !(0 == ~cond); {1786#true} is VALID [2022-04-28 11:49:34,825 INFO L290 TraceCheckUtils]: 25: Hoare triple {1786#true} assume true; {1786#true} is VALID [2022-04-28 11:49:34,825 INFO L284 TraceCheckUtils]: 26: Hoare quadruple {1786#true} {1839#(= main_~B~0 main_~b~0)} #85#return; {1839#(= main_~B~0 main_~b~0)} is VALID [2022-04-28 11:49:34,826 INFO L290 TraceCheckUtils]: 27: Hoare triple {1839#(= main_~B~0 main_~b~0)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {1787#false} is VALID [2022-04-28 11:49:34,826 INFO L290 TraceCheckUtils]: 28: Hoare triple {1787#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {1787#false} is VALID [2022-04-28 11:49:34,826 INFO L290 TraceCheckUtils]: 29: Hoare triple {1787#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {1787#false} is VALID [2022-04-28 11:49:34,826 INFO L290 TraceCheckUtils]: 30: Hoare triple {1787#false} assume !!(#t~post4 < 10);havoc #t~post4; {1787#false} is VALID [2022-04-28 11:49:34,826 INFO L272 TraceCheckUtils]: 31: Hoare triple {1787#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {1787#false} is VALID [2022-04-28 11:49:34,826 INFO L290 TraceCheckUtils]: 32: Hoare triple {1787#false} ~cond := #in~cond; {1787#false} is VALID [2022-04-28 11:49:34,826 INFO L290 TraceCheckUtils]: 33: Hoare triple {1787#false} assume 0 == ~cond; {1787#false} is VALID [2022-04-28 11:49:34,827 INFO L290 TraceCheckUtils]: 34: Hoare triple {1787#false} assume !false; {1787#false} is VALID [2022-04-28 11:49:34,827 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 11:49:34,828 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-04-28 11:49:34,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [577665688] [2022-04-28 11:49:34,828 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:49:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2048003249] [2022-04-28 11:49:34,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2048003249] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:34,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:34,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 11:49:34,828 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:34,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2034317169] [2022-04-28 11:49:34,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2034317169] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:34,829 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:34,829 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-04-28 11:49:34,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228474138] [2022-04-28 11:49:34,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:34,829 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-04-28 11:49:34,829 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:34,829 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 11:49:34,850 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:34,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-04-28 11:49:34,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:34,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-04-28 11:49:34,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-04-28 11:49:34,852 INFO L87 Difference]: Start difference. First operand 51 states and 60 transitions. Second operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 11:49:34,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:34,951 INFO L93 Difference]: Finished difference Result 72 states and 85 transitions. [2022-04-28 11:49:34,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-04-28 11:49:34,951 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 35 [2022-04-28 11:49:34,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:34,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 11:49:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-28 11:49:34,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 11:49:34,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 58 transitions. [2022-04-28 11:49:34,953 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 3 states and 58 transitions. [2022-04-28 11:49:34,991 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 58 edges. 58 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:34,992 INFO L225 Difference]: With dead ends: 72 [2022-04-28 11:49:34,992 INFO L226 Difference]: Without dead ends: 40 [2022-04-28 11:49:34,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 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 11:49:34,993 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:34,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 55 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:49:34,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2022-04-28 11:49:35,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2022-04-28 11:49:35,014 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:35,014 INFO L82 GeneralOperation]: Start isEquivalent. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,014 INFO L74 IsIncluded]: Start isIncluded. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,014 INFO L87 Difference]: Start difference. First operand 40 states. Second operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:35,016 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-28 11:49:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-28 11:49:35,016 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:35,016 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:35,016 INFO L74 IsIncluded]: Start isIncluded. First operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 40 states. [2022-04-28 11:49:35,016 INFO L87 Difference]: Start difference. First operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 40 states. [2022-04-28 11:49:35,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:35,017 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-04-28 11:49:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-28 11:49:35,018 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:35,018 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:35,018 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:35,018 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:35,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 28 states have (on average 1.25) internal successors, (35), 29 states have internal predecessors, (35), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 47 transitions. [2022-04-28 11:49:35,019 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 47 transitions. Word has length 35 [2022-04-28 11:49:35,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:35,019 INFO L495 AbstractCegarLoop]: Abstraction has 40 states and 47 transitions. [2022-04-28 11:49:35,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 7.333333333333333) internal successors, (22), 3 states have internal predecessors, (22), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-04-28 11:49:35,020 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 40 states and 47 transitions. [2022-04-28 11:49:35,063 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 47 edges. 47 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 47 transitions. [2022-04-28 11:49:35,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2022-04-28 11:49:35,064 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:35,064 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1] [2022-04-28 11:49:35,081 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-04-28 11:49:35,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:35,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:35,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 1 times [2022-04-28 11:49:35,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:35,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [2016146796] [2022-04-28 11:49:35,276 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:35,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1874551443, now seen corresponding path program 2 times [2022-04-28 11:49:35,277 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:35,277 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212809236] [2022-04-28 11:49:35,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:35,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:35,293 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:35,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2051510086] [2022-04-28 11:49:35,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:35,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:35,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:35,294 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 11:49:35,295 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-04-28 11:49:35,331 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 11:49:35,331 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:49:35,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 7 conjunts are in the unsatisfiable core [2022-04-28 11:49:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:35,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:49:35,500 INFO L272 TraceCheckUtils]: 0: Hoare triple {2197#true} call ULTIMATE.init(); {2197#true} is VALID [2022-04-28 11:49:35,501 INFO L290 TraceCheckUtils]: 1: Hoare triple {2197#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);~counter~0 := 0; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,501 INFO L290 TraceCheckUtils]: 2: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,501 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2205#(<= ~counter~0 0)} {2197#true} #89#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,502 INFO L272 TraceCheckUtils]: 4: Hoare triple {2205#(<= ~counter~0 0)} call #t~ret5 := main(); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,502 INFO L290 TraceCheckUtils]: 5: Hoare triple {2205#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,503 INFO L272 TraceCheckUtils]: 6: Hoare triple {2205#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,503 INFO L290 TraceCheckUtils]: 7: Hoare triple {2205#(<= ~counter~0 0)} ~cond := #in~cond; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,503 INFO L290 TraceCheckUtils]: 8: Hoare triple {2205#(<= ~counter~0 0)} assume !(0 == ~cond); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,503 INFO L290 TraceCheckUtils]: 9: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,504 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2205#(<= ~counter~0 0)} {2205#(<= ~counter~0 0)} #81#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,504 INFO L272 TraceCheckUtils]: 11: Hoare triple {2205#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,505 INFO L290 TraceCheckUtils]: 12: Hoare triple {2205#(<= ~counter~0 0)} ~cond := #in~cond; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,505 INFO L290 TraceCheckUtils]: 13: Hoare triple {2205#(<= ~counter~0 0)} assume !(0 == ~cond); {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,505 INFO L290 TraceCheckUtils]: 14: Hoare triple {2205#(<= ~counter~0 0)} assume true; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,506 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2205#(<= ~counter~0 0)} {2205#(<= ~counter~0 0)} #83#return; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,506 INFO L290 TraceCheckUtils]: 16: Hoare triple {2205#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2205#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:35,507 INFO L290 TraceCheckUtils]: 17: Hoare triple {2205#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2254#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:35,507 INFO L290 TraceCheckUtils]: 18: Hoare triple {2254#(<= ~counter~0 1)} assume !!(#t~post3 < 10);havoc #t~post3; {2254#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:35,508 INFO L290 TraceCheckUtils]: 19: Hoare triple {2254#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2254#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:35,508 INFO L290 TraceCheckUtils]: 20: Hoare triple {2254#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2264#(<= |main_#t~post3| 1)} is VALID [2022-04-28 11:49:35,508 INFO L290 TraceCheckUtils]: 21: Hoare triple {2264#(<= |main_#t~post3| 1)} assume !(#t~post3 < 10);havoc #t~post3; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 22: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 23: Hoare triple {2198#false} assume !!(#t~post4 < 10);havoc #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L272 TraceCheckUtils]: 24: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 25: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 26: Hoare triple {2198#false} assume !(0 == ~cond); {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 27: Hoare triple {2198#false} assume true; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2198#false} {2198#false} #85#return; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 29: Hoare triple {2198#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 30: Hoare triple {2198#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 31: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,509 INFO L290 TraceCheckUtils]: 32: Hoare triple {2198#false} assume !(#t~post4 < 10);havoc #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,510 INFO L272 TraceCheckUtils]: 33: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-28 11:49:35,510 INFO L290 TraceCheckUtils]: 34: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-28 11:49:35,510 INFO L290 TraceCheckUtils]: 35: Hoare triple {2198#false} assume 0 == ~cond; {2198#false} is VALID [2022-04-28 11:49:35,510 INFO L290 TraceCheckUtils]: 36: Hoare triple {2198#false} assume !false; {2198#false} is VALID [2022-04-28 11:49:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-04-28 11:49:35,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 11:49:35,712 INFO L290 TraceCheckUtils]: 36: Hoare triple {2198#false} assume !false; {2198#false} is VALID [2022-04-28 11:49:35,712 INFO L290 TraceCheckUtils]: 35: Hoare triple {2198#false} assume 0 == ~cond; {2198#false} is VALID [2022-04-28 11:49:35,712 INFO L290 TraceCheckUtils]: 34: Hoare triple {2198#false} ~cond := #in~cond; {2198#false} is VALID [2022-04-28 11:49:35,713 INFO L272 TraceCheckUtils]: 33: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2198#false} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 32: Hoare triple {2198#false} assume !(#t~post4 < 10);havoc #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 31: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 30: Hoare triple {2198#false} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2198#false} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 29: Hoare triple {2198#false} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2198#false} is VALID [2022-04-28 11:49:35,713 INFO L284 TraceCheckUtils]: 28: Hoare quadruple {2197#true} {2198#false} #85#return; {2198#false} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 27: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 26: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 25: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-28 11:49:35,713 INFO L272 TraceCheckUtils]: 24: Hoare triple {2198#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2197#true} is VALID [2022-04-28 11:49:35,713 INFO L290 TraceCheckUtils]: 23: Hoare triple {2198#false} assume !!(#t~post4 < 10);havoc #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,714 INFO L290 TraceCheckUtils]: 22: Hoare triple {2198#false} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2198#false} is VALID [2022-04-28 11:49:35,716 INFO L290 TraceCheckUtils]: 21: Hoare triple {2358#(< |main_#t~post3| 10)} assume !(#t~post3 < 10);havoc #t~post3; {2198#false} is VALID [2022-04-28 11:49:35,716 INFO L290 TraceCheckUtils]: 20: Hoare triple {2362#(< ~counter~0 10)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2358#(< |main_#t~post3| 10)} is VALID [2022-04-28 11:49:35,717 INFO L290 TraceCheckUtils]: 19: Hoare triple {2362#(< ~counter~0 10)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2362#(< ~counter~0 10)} is VALID [2022-04-28 11:49:35,717 INFO L290 TraceCheckUtils]: 18: Hoare triple {2362#(< ~counter~0 10)} assume !!(#t~post3 < 10);havoc #t~post3; {2362#(< ~counter~0 10)} is VALID [2022-04-28 11:49:35,717 INFO L290 TraceCheckUtils]: 17: Hoare triple {2372#(< ~counter~0 9)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2362#(< ~counter~0 10)} is VALID [2022-04-28 11:49:35,718 INFO L290 TraceCheckUtils]: 16: Hoare triple {2372#(< ~counter~0 9)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,718 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2197#true} {2372#(< ~counter~0 9)} #83#return; {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,718 INFO L290 TraceCheckUtils]: 14: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-28 11:49:35,718 INFO L290 TraceCheckUtils]: 13: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-28 11:49:35,718 INFO L290 TraceCheckUtils]: 12: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-28 11:49:35,719 INFO L272 TraceCheckUtils]: 11: Hoare triple {2372#(< ~counter~0 9)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2197#true} is VALID [2022-04-28 11:49:35,719 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2197#true} {2372#(< ~counter~0 9)} #81#return; {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,719 INFO L290 TraceCheckUtils]: 9: Hoare triple {2197#true} assume true; {2197#true} is VALID [2022-04-28 11:49:35,719 INFO L290 TraceCheckUtils]: 8: Hoare triple {2197#true} assume !(0 == ~cond); {2197#true} is VALID [2022-04-28 11:49:35,719 INFO L290 TraceCheckUtils]: 7: Hoare triple {2197#true} ~cond := #in~cond; {2197#true} is VALID [2022-04-28 11:49:35,719 INFO L272 TraceCheckUtils]: 6: Hoare triple {2372#(< ~counter~0 9)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2197#true} is VALID [2022-04-28 11:49:35,720 INFO L290 TraceCheckUtils]: 5: Hoare triple {2372#(< ~counter~0 9)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,720 INFO L272 TraceCheckUtils]: 4: Hoare triple {2372#(< ~counter~0 9)} call #t~ret5 := main(); {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,720 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2372#(< ~counter~0 9)} {2197#true} #89#return; {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,721 INFO L290 TraceCheckUtils]: 2: Hoare triple {2372#(< ~counter~0 9)} assume true; {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,721 INFO L290 TraceCheckUtils]: 1: Hoare triple {2197#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);~counter~0 := 0; {2372#(< ~counter~0 9)} is VALID [2022-04-28 11:49:35,721 INFO L272 TraceCheckUtils]: 0: Hoare triple {2197#true} call ULTIMATE.init(); {2197#true} is VALID [2022-04-28 11:49:35,721 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-04-28 11:49:35,722 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212809236] [2022-04-28 11:49:35,722 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:49:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051510086] [2022-04-28 11:49:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051510086] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 11:49:35,722 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 11:49:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-04-28 11:49:35,722 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:35,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [2016146796] [2022-04-28 11:49:35,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [2016146796] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:35,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:35,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-04-28 11:49:35,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293310972] [2022-04-28 11:49:35,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:35,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2022-04-28 11:49:35,723 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:35,723 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:35,746 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 32 edges. 32 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:35,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-04-28 11:49:35,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:35,746 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-04-28 11:49:35,746 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-04-28 11:49:35,747 INFO L87 Difference]: Start difference. First operand 40 states and 47 transitions. Second operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:35,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:35,866 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2022-04-28 11:49:35,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-04-28 11:49:35,866 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 37 [2022-04-28 11:49:35,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:35,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:35,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-28 11:49:35,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:35,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 55 transitions. [2022-04-28 11:49:35,868 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 6 states and 55 transitions. [2022-04-28 11:49:35,904 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 55 edges. 55 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:35,905 INFO L225 Difference]: With dead ends: 63 [2022-04-28 11:49:35,905 INFO L226 Difference]: Without dead ends: 42 [2022-04-28 11:49:35,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-04-28 11:49:35,906 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 6 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:35,906 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 82 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:49:35,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2022-04-28 11:49:35,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2022-04-28 11:49:35,929 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:35,929 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,929 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,929 INFO L87 Difference]: Start difference. First operand 42 states. Second operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:35,930 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-28 11:49:35,930 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-28 11:49:35,931 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:35,931 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:35,931 INFO L74 IsIncluded]: Start isIncluded. First operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 42 states. [2022-04-28 11:49:35,931 INFO L87 Difference]: Start difference. First operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Second operand 42 states. [2022-04-28 11:49:35,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:35,932 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2022-04-28 11:49:35,932 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-28 11:49:35,932 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:35,932 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:35,932 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:35,932 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:35,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42 states, 30 states have (on average 1.2333333333333334) internal successors, (37), 31 states have internal predecessors, (37), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2022-04-28 11:49:35,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2022-04-28 11:49:35,933 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 37 [2022-04-28 11:49:35,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:35,934 INFO L495 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2022-04-28 11:49:35,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.4) internal successors, (22), 4 states have internal predecessors, (22), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:35,934 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 42 states and 49 transitions. [2022-04-28 11:49:35,977 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 49 edges. 49 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:35,977 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2022-04-28 11:49:35,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-28 11:49:35,977 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:35,978 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1] [2022-04-28 11:49:35,997 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-04-28 11:49:36,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:36,178 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:36,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 1 times [2022-04-28 11:49:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:36,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [599944598] [2022-04-28 11:49:36,179 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:36,179 INFO L85 PathProgramCache]: Analyzing trace with hash 815990494, now seen corresponding path program 2 times [2022-04-28 11:49:36,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:36,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006069575] [2022-04-28 11:49:36,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:36,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:36,194 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:36,195 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1968485930] [2022-04-28 11:49:36,195 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:36,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:36,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:36,196 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 11:49:36,197 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-04-28 11:49:36,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-04-28 11:49:36,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-04-28 11:49:36,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 123 conjuncts, 11 conjunts are in the unsatisfiable core [2022-04-28 11:49:36,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-04-28 11:49:36,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-04-28 11:49:36,480 INFO L272 TraceCheckUtils]: 0: Hoare triple {2722#true} call ULTIMATE.init(); {2722#true} is VALID [2022-04-28 11:49:36,481 INFO L290 TraceCheckUtils]: 1: Hoare triple {2722#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);~counter~0 := 0; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,481 INFO L290 TraceCheckUtils]: 2: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,481 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2730#(<= ~counter~0 0)} {2722#true} #89#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,482 INFO L272 TraceCheckUtils]: 4: Hoare triple {2730#(<= ~counter~0 0)} call #t~ret5 := main(); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,482 INFO L290 TraceCheckUtils]: 5: Hoare triple {2730#(<= ~counter~0 0)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,482 INFO L272 TraceCheckUtils]: 6: Hoare triple {2730#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,483 INFO L290 TraceCheckUtils]: 7: Hoare triple {2730#(<= ~counter~0 0)} ~cond := #in~cond; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,483 INFO L290 TraceCheckUtils]: 8: Hoare triple {2730#(<= ~counter~0 0)} assume !(0 == ~cond); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,483 INFO L290 TraceCheckUtils]: 9: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,484 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2730#(<= ~counter~0 0)} {2730#(<= ~counter~0 0)} #81#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,484 INFO L272 TraceCheckUtils]: 11: Hoare triple {2730#(<= ~counter~0 0)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,484 INFO L290 TraceCheckUtils]: 12: Hoare triple {2730#(<= ~counter~0 0)} ~cond := #in~cond; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,485 INFO L290 TraceCheckUtils]: 13: Hoare triple {2730#(<= ~counter~0 0)} assume !(0 == ~cond); {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,485 INFO L290 TraceCheckUtils]: 14: Hoare triple {2730#(<= ~counter~0 0)} assume true; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,485 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2730#(<= ~counter~0 0)} {2730#(<= ~counter~0 0)} #83#return; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,486 INFO L290 TraceCheckUtils]: 16: Hoare triple {2730#(<= ~counter~0 0)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2730#(<= ~counter~0 0)} is VALID [2022-04-28 11:49:36,486 INFO L290 TraceCheckUtils]: 17: Hoare triple {2730#(<= ~counter~0 0)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2779#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:36,487 INFO L290 TraceCheckUtils]: 18: Hoare triple {2779#(<= ~counter~0 1)} assume !!(#t~post3 < 10);havoc #t~post3; {2779#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:36,487 INFO L290 TraceCheckUtils]: 19: Hoare triple {2779#(<= ~counter~0 1)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2779#(<= ~counter~0 1)} is VALID [2022-04-28 11:49:36,487 INFO L290 TraceCheckUtils]: 20: Hoare triple {2779#(<= ~counter~0 1)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2789#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:36,488 INFO L290 TraceCheckUtils]: 21: Hoare triple {2789#(<= ~counter~0 2)} assume !!(#t~post3 < 10);havoc #t~post3; {2789#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:36,488 INFO L290 TraceCheckUtils]: 22: Hoare triple {2789#(<= ~counter~0 2)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2789#(<= ~counter~0 2)} is VALID [2022-04-28 11:49:36,489 INFO L290 TraceCheckUtils]: 23: Hoare triple {2789#(<= ~counter~0 2)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,489 INFO L290 TraceCheckUtils]: 24: Hoare triple {2799#(<= ~counter~0 3)} assume !!(#t~post4 < 10);havoc #t~post4; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,490 INFO L272 TraceCheckUtils]: 25: Hoare triple {2799#(<= ~counter~0 3)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,490 INFO L290 TraceCheckUtils]: 26: Hoare triple {2799#(<= ~counter~0 3)} ~cond := #in~cond; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,490 INFO L290 TraceCheckUtils]: 27: Hoare triple {2799#(<= ~counter~0 3)} assume !(0 == ~cond); {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,491 INFO L290 TraceCheckUtils]: 28: Hoare triple {2799#(<= ~counter~0 3)} assume true; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,491 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2799#(<= ~counter~0 3)} {2799#(<= ~counter~0 3)} #85#return; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,492 INFO L290 TraceCheckUtils]: 30: Hoare triple {2799#(<= ~counter~0 3)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,492 INFO L290 TraceCheckUtils]: 31: Hoare triple {2799#(<= ~counter~0 3)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2799#(<= ~counter~0 3)} is VALID [2022-04-28 11:49:36,492 INFO L290 TraceCheckUtils]: 32: Hoare triple {2799#(<= ~counter~0 3)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2827#(<= |main_#t~post4| 3)} is VALID [2022-04-28 11:49:36,493 INFO L290 TraceCheckUtils]: 33: Hoare triple {2827#(<= |main_#t~post4| 3)} assume !(#t~post4 < 10);havoc #t~post4; {2723#false} is VALID [2022-04-28 11:49:36,493 INFO L272 TraceCheckUtils]: 34: Hoare triple {2723#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2723#false} is VALID [2022-04-28 11:49:36,493 INFO L290 TraceCheckUtils]: 35: Hoare triple {2723#false} ~cond := #in~cond; {2723#false} is VALID [2022-04-28 11:49:36,493 INFO L290 TraceCheckUtils]: 36: Hoare triple {2723#false} assume 0 == ~cond; {2723#false} is VALID [2022-04-28 11:49:36,493 INFO L290 TraceCheckUtils]: 37: Hoare triple {2723#false} assume !false; {2723#false} is VALID [2022-04-28 11:49:36,493 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 11:49:36,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-04-28 11:49:36,743 INFO L290 TraceCheckUtils]: 37: Hoare triple {2723#false} assume !false; {2723#false} is VALID [2022-04-28 11:49:36,743 INFO L290 TraceCheckUtils]: 36: Hoare triple {2723#false} assume 0 == ~cond; {2723#false} is VALID [2022-04-28 11:49:36,743 INFO L290 TraceCheckUtils]: 35: Hoare triple {2723#false} ~cond := #in~cond; {2723#false} is VALID [2022-04-28 11:49:36,744 INFO L272 TraceCheckUtils]: 34: Hoare triple {2723#false} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2723#false} is VALID [2022-04-28 11:49:36,744 INFO L290 TraceCheckUtils]: 33: Hoare triple {2855#(< |main_#t~post4| 10)} assume !(#t~post4 < 10);havoc #t~post4; {2723#false} is VALID [2022-04-28 11:49:36,744 INFO L290 TraceCheckUtils]: 32: Hoare triple {2859#(< ~counter~0 10)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2855#(< |main_#t~post4| 10)} is VALID [2022-04-28 11:49:36,745 INFO L290 TraceCheckUtils]: 31: Hoare triple {2859#(< ~counter~0 10)} assume ~r~0 % 4294967296 >= ~b~0 % 4294967296;~q~0 := 1 + ~q~0;~r~0 := ~r~0 - ~b~0; {2859#(< ~counter~0 10)} is VALID [2022-04-28 11:49:36,745 INFO L290 TraceCheckUtils]: 30: Hoare triple {2859#(< ~counter~0 10)} assume !!(~b~0 % 4294967296 != ~B~0 % 4294967296);~q~0 := 2 * ~q~0;~b~0 := (if ~b~0 % 4294967296 < 0 && 0 != ~b~0 % 4294967296 % 2 then 1 + ~b~0 % 4294967296 / 2 else ~b~0 % 4294967296 / 2); {2859#(< ~counter~0 10)} is VALID [2022-04-28 11:49:36,746 INFO L284 TraceCheckUtils]: 29: Hoare quadruple {2722#true} {2859#(< ~counter~0 10)} #85#return; {2859#(< ~counter~0 10)} is VALID [2022-04-28 11:49:36,746 INFO L290 TraceCheckUtils]: 28: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-28 11:49:36,746 INFO L290 TraceCheckUtils]: 27: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-28 11:49:36,746 INFO L290 TraceCheckUtils]: 26: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-28 11:49:36,746 INFO L272 TraceCheckUtils]: 25: Hoare triple {2859#(< ~counter~0 10)} call __VERIFIER_assert((if ~A~0 % 4294967296 == (~q~0 * ~b~0 + ~r~0) % 4294967296 then 1 else 0)); {2722#true} is VALID [2022-04-28 11:49:36,746 INFO L290 TraceCheckUtils]: 24: Hoare triple {2859#(< ~counter~0 10)} assume !!(#t~post4 < 10);havoc #t~post4; {2859#(< ~counter~0 10)} is VALID [2022-04-28 11:49:36,747 INFO L290 TraceCheckUtils]: 23: Hoare triple {2887#(< ~counter~0 9)} #t~post4 := ~counter~0;~counter~0 := 1 + #t~post4; {2859#(< ~counter~0 10)} is VALID [2022-04-28 11:49:36,747 INFO L290 TraceCheckUtils]: 22: Hoare triple {2887#(< ~counter~0 9)} assume !(~r~0 % 4294967296 >= ~b~0 % 4294967296); {2887#(< ~counter~0 9)} is VALID [2022-04-28 11:49:36,748 INFO L290 TraceCheckUtils]: 21: Hoare triple {2887#(< ~counter~0 9)} assume !!(#t~post3 < 10);havoc #t~post3; {2887#(< ~counter~0 9)} is VALID [2022-04-28 11:49:36,748 INFO L290 TraceCheckUtils]: 20: Hoare triple {2897#(< ~counter~0 8)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2887#(< ~counter~0 9)} is VALID [2022-04-28 11:49:36,749 INFO L290 TraceCheckUtils]: 19: Hoare triple {2897#(< ~counter~0 8)} assume !!(~r~0 % 4294967296 >= ~b~0 % 4294967296);~b~0 := 2 * ~b~0; {2897#(< ~counter~0 8)} is VALID [2022-04-28 11:49:36,749 INFO L290 TraceCheckUtils]: 18: Hoare triple {2897#(< ~counter~0 8)} assume !!(#t~post3 < 10);havoc #t~post3; {2897#(< ~counter~0 8)} is VALID [2022-04-28 11:49:36,749 INFO L290 TraceCheckUtils]: 17: Hoare triple {2907#(< ~counter~0 7)} #t~post3 := ~counter~0;~counter~0 := 1 + #t~post3; {2897#(< ~counter~0 8)} is VALID [2022-04-28 11:49:36,750 INFO L290 TraceCheckUtils]: 16: Hoare triple {2907#(< ~counter~0 7)} ~q~0 := 0;~r~0 := ~A~0;~b~0 := ~B~0; {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,750 INFO L284 TraceCheckUtils]: 15: Hoare quadruple {2722#true} {2907#(< ~counter~0 7)} #83#return; {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,750 INFO L290 TraceCheckUtils]: 14: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-28 11:49:36,750 INFO L290 TraceCheckUtils]: 13: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-28 11:49:36,751 INFO L290 TraceCheckUtils]: 12: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-28 11:49:36,751 INFO L272 TraceCheckUtils]: 11: Hoare triple {2907#(< ~counter~0 7)} call assume_abort_if_not((if ~B~0 % 4294967296 >= 1 then 1 else 0)); {2722#true} is VALID [2022-04-28 11:49:36,751 INFO L284 TraceCheckUtils]: 10: Hoare quadruple {2722#true} {2907#(< ~counter~0 7)} #81#return; {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,752 INFO L290 TraceCheckUtils]: 9: Hoare triple {2722#true} assume true; {2722#true} is VALID [2022-04-28 11:49:36,752 INFO L290 TraceCheckUtils]: 8: Hoare triple {2722#true} assume !(0 == ~cond); {2722#true} is VALID [2022-04-28 11:49:36,752 INFO L290 TraceCheckUtils]: 7: Hoare triple {2722#true} ~cond := #in~cond; {2722#true} is VALID [2022-04-28 11:49:36,752 INFO L272 TraceCheckUtils]: 6: Hoare triple {2907#(< ~counter~0 7)} call assume_abort_if_not((if ~B~0 % 4294967296 < 2147483647 then 1 else 0)); {2722#true} is VALID [2022-04-28 11:49:36,752 INFO L290 TraceCheckUtils]: 5: Hoare triple {2907#(< ~counter~0 7)} havoc ~A~0;havoc ~B~0;havoc ~q~0;havoc ~r~0;havoc ~b~0;~A~0 := #t~nondet1;havoc #t~nondet1;~B~0 := #t~nondet2;havoc #t~nondet2; {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,752 INFO L272 TraceCheckUtils]: 4: Hoare triple {2907#(< ~counter~0 7)} call #t~ret5 := main(); {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,753 INFO L284 TraceCheckUtils]: 3: Hoare quadruple {2907#(< ~counter~0 7)} {2722#true} #89#return; {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,753 INFO L290 TraceCheckUtils]: 2: Hoare triple {2907#(< ~counter~0 7)} assume true; {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,754 INFO L290 TraceCheckUtils]: 1: Hoare triple {2722#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);~counter~0 := 0; {2907#(< ~counter~0 7)} is VALID [2022-04-28 11:49:36,754 INFO L272 TraceCheckUtils]: 0: Hoare triple {2722#true} call ULTIMATE.init(); {2722#true} is VALID [2022-04-28 11:49:36,755 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-04-28 11:49:36,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-04-28 11:49:36,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006069575] [2022-04-28 11:49:36,755 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-04-28 11:49:36,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1968485930] [2022-04-28 11:49:36,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1968485930] provided 0 perfect and 2 imperfect interpolant sequences [2022-04-28 11:49:36,755 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-04-28 11:49:36,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2022-04-28 11:49:36,755 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-04-28 11:49:36,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [599944598] [2022-04-28 11:49:36,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [599944598] provided 1 perfect and 0 imperfect interpolant sequences [2022-04-28 11:49:36,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-04-28 11:49:36,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-04-28 11:49:36,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222387549] [2022-04-28 11:49:36,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-04-28 11:49:36,756 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-04-28 11:49:36,757 INFO L84 Accepts]: Finished accepts. word is accepted. [2022-04-28 11:49:36,758 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:36,783 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 35 edges. 35 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:36,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-04-28 11:49:36,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:36,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-04-28 11:49:36,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2022-04-28 11:49:36,784 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:36,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:36,978 INFO L93 Difference]: Finished difference Result 67 states and 78 transitions. [2022-04-28 11:49:36,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-04-28 11:49:36,978 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-04-28 11:49:36,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-04-28 11:49:36,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:36,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-28 11:49:36,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:36,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 66 transitions. [2022-04-28 11:49:36,981 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 8 states and 66 transitions. [2022-04-28 11:49:37,039 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 66 edges. 66 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:37,040 INFO L225 Difference]: With dead ends: 67 [2022-04-28 11:49:37,040 INFO L226 Difference]: Without dead ends: 60 [2022-04-28 11:49:37,040 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2022-04-28 11:49:37,041 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 30 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-04-28 11:49:37,041 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 96 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-04-28 11:49:37,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2022-04-28 11:49:37,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2022-04-28 11:49:37,071 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2022-04-28 11:49:37,071 INFO L82 GeneralOperation]: Start isEquivalent. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:37,072 INFO L74 IsIncluded]: Start isIncluded. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:37,072 INFO L87 Difference]: Start difference. First operand 60 states. Second operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:37,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:37,073 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-28 11:49:37,073 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-28 11:49:37,074 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:37,074 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:37,074 INFO L74 IsIncluded]: Start isIncluded. First operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 60 states. [2022-04-28 11:49:37,074 INFO L87 Difference]: Start difference. First operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand 60 states. [2022-04-28 11:49:37,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-04-28 11:49:37,075 INFO L93 Difference]: Finished difference Result 60 states and 71 transitions. [2022-04-28 11:49:37,075 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2022-04-28 11:49:37,076 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-04-28 11:49:37,076 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2022-04-28 11:49:37,076 INFO L88 GeneralOperation]: Finished isEquivalent. [2022-04-28 11:49:37,076 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2022-04-28 11:49:37,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 40 states have (on average 1.225) internal successors, (49), 41 states have internal predecessors, (49), 8 states have call successors, (8), 6 states have call predecessors, (8), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-04-28 11:49:37,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2022-04-28 11:49:37,077 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 38 [2022-04-28 11:49:37,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-04-28 11:49:37,077 INFO L495 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2022-04-28 11:49:37,078 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 6 states have internal predecessors, (25), 4 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 3 states have call successors, (4) [2022-04-28 11:49:37,078 INFO L86 InductivityCheck]: Starting inductivity check of a Floyd-Hoare automaton with 54 states and 63 transitions. [2022-04-28 11:49:37,136 INFO L122 InductivityCheck]: Floyd-Hoare automaton has 63 edges. 63 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2022-04-28 11:49:37,136 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2022-04-28 11:49:37,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-04-28 11:49:37,137 INFO L187 NwaCegarLoop]: Found error trace [2022-04-28 11:49:37,137 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-04-28 11:49:37,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-04-28 11:49:37,349 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:37,349 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-04-28 11:49:37,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-04-28 11:49:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 1 times [2022-04-28 11:49:37,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-04-28 11:49:37,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1377677874] [2022-04-28 11:49:37,350 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-04-28 11:49:37,350 INFO L85 PathProgramCache]: Analyzing trace with hash 817777954, now seen corresponding path program 2 times [2022-04-28 11:49:37,350 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-04-28 11:49:37,350 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [138951085] [2022-04-28 11:49:37,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-04-28 11:49:37,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-04-28 11:49:37,362 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-04-28 11:49:37,362 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [612815818] [2022-04-28 11:49:37,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-04-28 11:49:37,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-04-28 11:49:37,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-04-28 11:49:37,364 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-04-28 11:49:37,365 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process