/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data --core.log.level.for.class de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf -i ../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-7968f31 [2022-03-18 04:14:08,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-18 04:14:08,273 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-18 04:14:08,326 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-03-18 04:14:08,326 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-03-18 04:14:08,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-03-18 04:14:08,327 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-03-18 04:14:08,329 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-03-18 04:14:08,330 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-03-18 04:14:08,330 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-03-18 04:14:08,331 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-03-18 04:14:08,332 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-03-18 04:14:08,332 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-03-18 04:14:08,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-03-18 04:14:08,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-03-18 04:14:08,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-03-18 04:14:08,334 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-03-18 04:14:08,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-03-18 04:14:08,341 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-03-18 04:14:08,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-03-18 04:14:08,348 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-03-18 04:14:08,350 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-03-18 04:14:08,351 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-03-18 04:14:08,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-03-18 04:14:08,355 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-03-18 04:14:08,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-03-18 04:14:08,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-03-18 04:14:08,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-03-18 04:14:08,357 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-03-18 04:14:08,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-03-18 04:14:08,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-03-18 04:14:08,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-03-18 04:14:08,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-03-18 04:14:08,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-03-18 04:14:08,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-03-18 04:14:08,361 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-03-18 04:14:08,361 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-03-18 04:14:08,362 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-03-18 04:14:08,362 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-03-18 04:14:08,362 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-18 04:14:08,362 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-18 04:14:08,363 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-18 04:14:08,364 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-18 04:14:08,371 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-18 04:14:08,372 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-18 04:14:08,374 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-18 04:14:08,374 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-18 04:14:08,374 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-18 04:14:08,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-18 04:14:08,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-18 04:14:08,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-18 04:14:08,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-18 04:14:08,375 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-18 04:14:08,375 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-18 04:14:08,375 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-18 04:14:08,375 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-18 04:14:08,375 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-18 04:14:08,375 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-18 04:14:08,376 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 04:14:08,376 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-18 04:14:08,376 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-18 04:14:08,376 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-18 04:14:08,376 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-18 04:14:08,376 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-18 04:14:08,376 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-18 04:14:08,376 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-18 04:14:08,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-18 04:14:08,586 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-18 04:14:08,588 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-18 04:14:08,588 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-18 04:14:08,589 INFO L275 PluginConnector]: CDTParser initialized [2022-03-18 04:14:08,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound2.c [2022-03-18 04:14:08,636 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07bd234f/b4abb853e3bc4574aee2bb85f4a2e365/FLAG31d06f7ec [2022-03-18 04:14:08,984 INFO L306 CDTParser]: Found 1 translation units. [2022-03-18 04:14:08,984 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/nla-digbench-scaling/mannadiv_valuebound2.c [2022-03-18 04:14:08,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07bd234f/b4abb853e3bc4574aee2bb85f4a2e365/FLAG31d06f7ec [2022-03-18 04:14:09,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a07bd234f/b4abb853e3bc4574aee2bb85f4a2e365 [2022-03-18 04:14:09,003 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-18 04:14:09,005 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-18 04:14:09,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-18 04:14:09,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-18 04:14:09,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-18 04:14:09,011 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,012 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26cfea7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09, skipping insertion in model container [2022-03-18 04:14:09,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,016 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-18 04:14:09,027 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-18 04:14:09,163 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/mannadiv_valuebound2.c[573,586] [2022-03-18 04:14:09,175 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 04:14:09,180 INFO L203 MainTranslator]: Completed pre-run [2022-03-18 04:14:09,189 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/mannadiv_valuebound2.c[573,586] [2022-03-18 04:14:09,196 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-18 04:14:09,206 INFO L208 MainTranslator]: Completed translation [2022-03-18 04:14:09,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09 WrapperNode [2022-03-18 04:14:09,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-18 04:14:09,209 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-18 04:14:09,209 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-18 04:14:09,209 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-18 04:14:09,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,222 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,222 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,228 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,231 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,235 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-18 04:14:09,241 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-18 04:14:09,241 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-18 04:14:09,241 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-18 04:14:09,242 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (1/1) ... [2022-03-18 04:14:09,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-18 04:14:09,254 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 04:14:09,264 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-18 04:14:09,279 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-18 04:14:09,302 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-18 04:14:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-18 04:14:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-18 04:14:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-18 04:14:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-18 04:14:09,303 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-18 04:14:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-18 04:14:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-18 04:14:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-18 04:14:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-18 04:14:09,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-18 04:14:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-18 04:14:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-18 04:14:09,304 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-18 04:14:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-18 04:14:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-18 04:14:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-18 04:14:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-18 04:14:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-18 04:14:09,305 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-18 04:14:09,350 INFO L234 CfgBuilder]: Building ICFG [2022-03-18 04:14:09,352 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-18 04:14:09,439 INFO L275 CfgBuilder]: Performing block encoding [2022-03-18 04:14:09,443 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-18 04:14:09,443 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-18 04:14:09,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:14:09 BoogieIcfgContainer [2022-03-18 04:14:09,444 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-18 04:14:09,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-18 04:14:09,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-18 04:14:09,461 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-18 04:14:09,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.03 04:14:09" (1/3) ... [2022-03-18 04:14:09,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9265e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:14:09, skipping insertion in model container [2022-03-18 04:14:09,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.03 04:14:09" (2/3) ... [2022-03-18 04:14:09,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f9265e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.03 04:14:09, skipping insertion in model container [2022-03-18 04:14:09,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.03 04:14:09" (3/3) ... [2022-03-18 04:14:09,463 INFO L111 eAbstractionObserver]: Analyzing ICFG mannadiv_valuebound2.c [2022-03-18 04:14:09,467 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-18 04:14:09,467 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-18 04:14:09,518 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-18 04:14:09,524 INFO L340 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 [2022-03-18 04:14:09,524 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-18 04:14:09,537 INFO L276 IsEmpty]: Start isEmpty. Operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-03-18 04:14:09,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 04:14:09,543 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 04:14:09,544 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 04:14:09,544 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 04:14:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 04:14:09,550 INFO L85 PathProgramCache]: Analyzing trace with hash -786972844, now seen corresponding path program 1 times [2022-03-18 04:14:09,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 04:14:09,556 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [818541711] [2022-03-18 04:14:09,564 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 04:14:09,564 INFO L85 PathProgramCache]: Analyzing trace with hash -786972844, now seen corresponding path program 2 times [2022-03-18 04:14:09,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 04:14:09,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351572225] [2022-03-18 04:14:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 04:14:09,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 04:14:09,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 04:14:09,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-18 04:14:09,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 04:14:09,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-03-18 04:14:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 04:14:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-03-18 04:14:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-18 04:14:09,748 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 04:14:09,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 04:14:09,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351572225] [2022-03-18 04:14:09,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351572225] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 04:14:09,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 04:14:09,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 04:14:09,751 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 04:14:09,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [818541711] [2022-03-18 04:14:09,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [818541711] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 04:14:09,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 04:14:09,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-03-18 04:14:09,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439962936] [2022-03-18 04:14:09,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 04:14:09,755 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-03-18 04:14:09,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 04:14:09,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-03-18 04:14:09,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-03-18 04:14:09,775 INFO L87 Difference]: Start difference. First operand has 29 states, 17 states have (on average 1.411764705882353) internal successors, (24), 18 states have internal predecessors, (24), 6 states have call successors, (6), 4 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Second operand has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 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) [2022-03-18 04:14:09,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 04:14:09,823 INFO L93 Difference]: Finished difference Result 51 states and 68 transitions. [2022-03-18 04:14:09,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-03-18 04:14:09,825 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (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 22 [2022-03-18 04:14:09,825 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 04:14:09,829 INFO L225 Difference]: With dead ends: 51 [2022-03-18 04:14:09,829 INFO L226 Difference]: Without dead ends: 24 [2022-03-18 04:14:09,831 INFO L911 BasicCegarLoop]: 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 [2022-03-18 04:14:09,835 INFO L912 BasicCegarLoop]: 28 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 04:14:09,836 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 31 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 04:14:09,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-03-18 04:14:09,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-03-18 04:14:09,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 6 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-03-18 04:14:09,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2022-03-18 04:14:09,860 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 22 [2022-03-18 04:14:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 04:14:09,860 INFO L478 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2022-03-18 04:14:09,860 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (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) [2022-03-18 04:14:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2022-03-18 04:14:09,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-18 04:14:09,862 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 04:14:09,862 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 04:14:09,862 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-18 04:14:09,862 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 04:14:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 04:14:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1131020600, now seen corresponding path program 1 times [2022-03-18 04:14:09,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 04:14:09,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1553714044] [2022-03-18 04:14:09,864 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 04:14:09,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1131020600, now seen corresponding path program 2 times [2022-03-18 04:14:09,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 04:14:09,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940597484] [2022-03-18 04:14:09,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 04:14:09,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 04:14:09,892 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 04:14:09,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1074599602] [2022-03-18 04:14:09,893 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 04:14:09,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 04:14:09,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 04:14:09,896 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 04:14:09,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-03-18 04:14:09,939 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-03-18 04:14:09,939 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 04:14:09,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 72 conjuncts, 9 conjunts are in the unsatisfiable core [2022-03-18 04:14:09,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 04:14:10,074 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 04:14:10,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-03-18 04:14:10,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 04:14:10,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940597484] [2022-03-18 04:14:10,075 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 04:14:10,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1074599602] [2022-03-18 04:14:10,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1074599602] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 04:14:10,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 04:14:10,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 04:14:10,077 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 04:14:10,077 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1553714044] [2022-03-18 04:14:10,077 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1553714044] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 04:14:10,077 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 04:14:10,077 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-03-18 04:14:10,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750419351] [2022-03-18 04:14:10,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 04:14:10,078 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-03-18 04:14:10,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 04:14:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-03-18 04:14:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-03-18 04:14:10,079 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-03-18 04:14:10,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 04:14:10,122 INFO L93 Difference]: Finished difference Result 35 states and 40 transitions. [2022-03-18 04:14:10,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-03-18 04:14:10,122 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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 22 [2022-03-18 04:14:10,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 04:14:10,123 INFO L225 Difference]: With dead ends: 35 [2022-03-18 04:14:10,123 INFO L226 Difference]: Without dead ends: 33 [2022-03-18 04:14:10,124 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-03-18 04:14:10,125 INFO L912 BasicCegarLoop]: 21 mSDtfsCounter, 7 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 04:14:10,125 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 80 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 04:14:10,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2022-03-18 04:14:10,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2022-03-18 04:14:10,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 18 states have (on average 1.1666666666666667) internal successors, (21), 20 states have internal predecessors, (21), 7 states have call successors, (7), 5 states have call predecessors, (7), 4 states have return successors, (5), 4 states have call predecessors, (5), 5 states have call successors, (5) [2022-03-18 04:14:10,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2022-03-18 04:14:10,132 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 22 [2022-03-18 04:14:10,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 04:14:10,132 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2022-03-18 04:14:10,133 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 4 states have internal predecessors, (11), 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) [2022-03-18 04:14:10,133 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2022-03-18 04:14:10,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-03-18 04:14:10,133 INFO L492 BasicCegarLoop]: Found error trace [2022-03-18 04:14:10,134 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-18 04:14:10,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-03-18 04:14:10,339 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 04:14:10,340 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-18 04:14:10,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-18 04:14:10,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1991967029, now seen corresponding path program 1 times [2022-03-18 04:14:10,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-18 04:14:10,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1384500737] [2022-03-18 04:14:10,341 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-18 04:14:10,341 INFO L85 PathProgramCache]: Analyzing trace with hash 1991967029, now seen corresponding path program 2 times [2022-03-18 04:14:10,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-18 04:14:10,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [614721005] [2022-03-18 04:14:10,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-18 04:14:10,342 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-18 04:14:10,351 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-03-18 04:14:10,351 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1705511424] [2022-03-18 04:14:10,352 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-03-18 04:14:10,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-03-18 04:14:10,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-18 04:14:10,354 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-03-18 04:14:10,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-03-18 04:14:10,391 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-03-18 04:14:10,391 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-03-18 04:14:10,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 92 conjuncts, 10 conjunts are in the unsatisfiable core [2022-03-18 04:14:10,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-03-18 04:14:10,562 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 04:14:10,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-03-18 04:14:10,703 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-03-18 04:14:10,704 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-18 04:14:10,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [614721005] [2022-03-18 04:14:10,704 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-03-18 04:14:10,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1705511424] [2022-03-18 04:14:10,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1705511424] provided 0 perfect and 2 imperfect interpolant sequences [2022-03-18 04:14:10,704 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-03-18 04:14:10,705 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 10 [2022-03-18 04:14:10,705 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-18 04:14:10,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1384500737] [2022-03-18 04:14:10,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1384500737] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-18 04:14:10,705 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-18 04:14:10,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-18 04:14:10,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297986399] [2022-03-18 04:14:10,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-18 04:14:10,706 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-18 04:14:10,707 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-18 04:14:10,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-18 04:14:10,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-03-18 04:14:10,708 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-18 04:14:10,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-18 04:14:10,767 INFO L93 Difference]: Finished difference Result 30 states and 33 transitions. [2022-03-18 04:14:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-18 04:14:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) Word has length 28 [2022-03-18 04:14:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-18 04:14:10,768 INFO L225 Difference]: With dead ends: 30 [2022-03-18 04:14:10,768 INFO L226 Difference]: Without dead ends: 0 [2022-03-18 04:14:10,769 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 46 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-03-18 04:14:10,770 INFO L912 BasicCegarLoop]: 18 mSDtfsCounter, 10 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-03-18 04:14:10,771 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 111 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-03-18 04:14:10,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-18 04:14:10,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-18 04:14:10,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-03-18 04:14:10,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-18 04:14:10,773 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2022-03-18 04:14:10,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-18 04:14:10,773 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-18 04:14:10,773 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (4), 2 states have call predecessors, (4), 1 states have call successors, (4) [2022-03-18 04:14:10,773 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-18 04:14:10,774 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-18 04:14:10,775 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-18 04:14:10,794 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-03-18 04:14:10,979 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-03-18 04:14:10,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-18 04:14:11,066 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 9) no Hoare annotation was computed. [2022-03-18 04:14:11,066 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 9) no Hoare annotation was computed. [2022-03-18 04:14:11,067 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 9) no Hoare annotation was computed. [2022-03-18 04:14:11,067 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notENTRY(lines 12 14) the Hoare annotation is: true [2022-03-18 04:14:11,067 INFO L885 garLoopResultBuilder]: At program point L13(line 13) the Hoare annotation is: true [2022-03-18 04:14:11,067 INFO L885 garLoopResultBuilder]: At program point L13-2(lines 12 14) the Hoare annotation is: true [2022-03-18 04:14:11,067 INFO L885 garLoopResultBuilder]: At program point assume_abort_if_notEXIT(lines 12 14) the Hoare annotation is: true [2022-03-18 04:14:11,068 INFO L878 garLoopResultBuilder]: At program point L35-2(lines 35 48) the Hoare annotation is: (let ((.cse0 (* main_~x2~0 main_~y1~0))) (and (= (+ .cse0 main_~y3~0 main_~y2~0) main_~x1~0) (= (+ .cse0 main_~y2~0) main_~x1~0))) [2022-03-18 04:14:11,068 INFO L885 garLoopResultBuilder]: At program point L29(line 29) the Hoare annotation is: true [2022-03-18 04:14:11,069 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 22 51) the Hoare annotation is: true [2022-03-18 04:14:11,069 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 22 51) the Hoare annotation is: true [2022-03-18 04:14:11,069 INFO L878 garLoopResultBuilder]: At program point L40(lines 40 47) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-03-18 04:14:11,069 INFO L878 garLoopResultBuilder]: At program point L40-2(lines 35 48) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-03-18 04:14:11,069 INFO L878 garLoopResultBuilder]: At program point L36(line 36) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-03-18 04:14:11,069 INFO L878 garLoopResultBuilder]: At program point L36-1(lines 35 48) the Hoare annotation is: (= (+ (* main_~x2~0 main_~y1~0) main_~y3~0 main_~y2~0) main_~x1~0) [2022-03-18 04:14:11,070 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 22 51) the Hoare annotation is: true [2022-03-18 04:14:11,070 INFO L885 garLoopResultBuilder]: At program point L28(line 28) the Hoare annotation is: true [2022-03-18 04:14:11,070 INFO L885 garLoopResultBuilder]: At program point L28-1(line 28) the Hoare annotation is: true [2022-03-18 04:14:11,070 INFO L885 garLoopResultBuilder]: At program point L49(line 49) the Hoare annotation is: true [2022-03-18 04:14:11,070 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2022-03-18 04:14:11,071 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-18 04:14:11,071 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2022-03-18 04:14:11,071 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-18 04:14:11,071 INFO L885 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: true [2022-03-18 04:14:11,071 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-18 04:14:11,071 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-18 04:14:11,072 INFO L878 garLoopResultBuilder]: At program point L17(lines 17 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-18 04:14:11,072 INFO L878 garLoopResultBuilder]: At program point L16(lines 16 19) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-18 04:14:11,072 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 15 21) the Hoare annotation is: true [2022-03-18 04:14:11,073 INFO L878 garLoopResultBuilder]: At program point L16-2(lines 15 21) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-18 04:14:11,075 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 15 21) the Hoare annotation is: (or (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2022-03-18 04:14:11,075 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 18) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2022-03-18 04:14:11,081 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 2] [2022-03-18 04:14:11,082 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-18 04:14:11,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.03 04:14:11 BoogieIcfgContainer [2022-03-18 04:14:11,094 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-18 04:14:11,094 INFO L158 Benchmark]: Toolchain (without parser) took 2089.43ms. Allocated memory was 207.6MB in the beginning and 257.9MB in the end (delta: 50.3MB). Free memory was 159.3MB in the beginning and 214.9MB in the end (delta: -55.6MB). There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 04:14:11,094 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 175.5MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-18 04:14:11,095 INFO L158 Benchmark]: CACSL2BoogieTranslator took 199.51ms. Allocated memory is still 207.6MB. Free memory was 159.2MB in the beginning and 184.9MB in the end (delta: -25.7MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. [2022-03-18 04:14:11,095 INFO L158 Benchmark]: Boogie Preprocessor took 31.55ms. Allocated memory is still 207.6MB. Free memory was 184.9MB in the beginning and 183.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-18 04:14:11,095 INFO L158 Benchmark]: RCFGBuilder took 203.29ms. Allocated memory is still 207.6MB. Free memory was 183.3MB in the beginning and 173.4MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-18 04:14:11,095 INFO L158 Benchmark]: TraceAbstraction took 1648.60ms. Allocated memory was 207.6MB in the beginning and 257.9MB in the end (delta: 50.3MB). Free memory was 172.8MB in the beginning and 214.9MB in the end (delta: -42.1MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. [2022-03-18 04:14:11,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 207.6MB. Free memory is still 175.5MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 199.51ms. Allocated memory is still 207.6MB. Free memory was 159.2MB in the beginning and 184.9MB in the end (delta: -25.7MB). Peak memory consumption was 9.5MB. Max. memory is 8.0GB. * Boogie Preprocessor took 31.55ms. Allocated memory is still 207.6MB. Free memory was 184.9MB in the beginning and 183.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 203.29ms. Allocated memory is still 207.6MB. Free memory was 183.3MB in the beginning and 173.4MB in the end (delta: 10.0MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * TraceAbstraction took 1648.60ms. Allocated memory was 207.6MB in the beginning and 257.9MB in the end (delta: 50.3MB). Free memory was 172.8MB in the beginning and 214.9MB in the end (delta: -42.1MB). Peak memory consumption was 8.8MB. Max. memory is 8.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 18]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 1.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 39 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 34 mSDsluCounter, 222 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 155 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 76 IncrementalHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 67 mSDtfsCounter, 76 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 89 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=2, InterpolantAutomatonStates: 14, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 29 LocationsWithAnnotation, 61 PreInvPairs, 87 NumberOfFragments, 105 HoareAnnotationTreeSize, 61 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 29 FomulaSimplificationsInter, 98 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 35]: Loop Invariant Derived loop invariant: x2 * y1 + y3 + y2 == x1 - ProcedureContractResult [Line: 12]: Procedure Contract for assume_abort_if_not Derived contract for procedure assume_abort_if_not: 1 - ProcedureContractResult [Line: 22]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: \old(cond) == cond || !(1 <= \old(cond)) RESULT: Ultimate proved your program to be correct! [2022-03-18 04:14:11,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...