/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/loops-crafted-1/sumt7.c -------------------------------------------------------------------------------- This is Ultimate 0.2.2-dev-5d317bd [2022-03-19 08:39:08,887 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-03-19 08:39:08,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-03-19 08:39:08,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2022-03-19 08:39:08,976 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-03-19 08:39:08,977 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-03-19 08:39:08,983 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-03-19 08:39:08,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationQvasr_64.epf [2022-03-19 08:39:08,989 INFO L113 SettingsManager]: Loading preferences was successful [2022-03-19 08:39:08,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-03-19 08:39:08,990 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * Use constant arrays=true [2022-03-19 08:39:08,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-03-19 08:39:08,991 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-03-19 08:39:08,991 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-03-19 08:39:08,991 INFO L138 SettingsManager]: * To the following directory=./dump/ [2022-03-19 08:39:08,991 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-03-19 08:39:08,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 08:39:08,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-03-19 08:39:08,997 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=Craig_NestedInterpolation [2022-03-19 08:39:08,997 INFO L138 SettingsManager]: * Trace refinement strategy=ACCELERATED_INTERPOLATION [2022-03-19 08:39:08,998 INFO L138 SettingsManager]: * Trace refinement strategy used in Accelerated Interpolation=CAMEL [2022-03-19 08:39:08,998 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-03-19 08:39:08,998 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=QVASR [2022-03-19 08:39:08,998 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.core: Log level for class -> de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=WARN; [2022-03-19 08:39:09,167 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-03-19 08:39:09,182 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-03-19 08:39:09,184 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-03-19 08:39:09,184 INFO L271 PluginConnector]: Initializing CDTParser... [2022-03-19 08:39:09,188 INFO L275 PluginConnector]: CDTParser initialized [2022-03-19 08:39:09,189 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/sumt7.c [2022-03-19 08:39:09,243 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd93135a3/af5dc55168234d44a2ada09db5a7b98c/FLAG9e01d810d [2022-03-19 08:39:09,553 INFO L306 CDTParser]: Found 1 translation units. [2022-03-19 08:39:09,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c [2022-03-19 08:39:09,558 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd93135a3/af5dc55168234d44a2ada09db5a7b98c/FLAG9e01d810d [2022-03-19 08:39:09,999 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/dd93135a3/af5dc55168234d44a2ada09db5a7b98c [2022-03-19 08:39:10,001 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-03-19 08:39:10,002 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2022-03-19 08:39:10,004 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-03-19 08:39:10,004 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-03-19 08:39:10,009 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-03-19 08:39:10,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,010 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@48de126b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10, skipping insertion in model container [2022-03-19 08:39:10,010 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-03-19 08:39:10,032 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-03-19 08:39:10,173 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c[403,416] [2022-03-19 08:39:10,199 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 08:39:10,205 INFO L203 MainTranslator]: Completed pre-run [2022-03-19 08:39:10,216 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loops-crafted-1/sumt7.c[403,416] [2022-03-19 08:39:10,226 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-03-19 08:39:10,236 INFO L208 MainTranslator]: Completed translation [2022-03-19 08:39:10,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10 WrapperNode [2022-03-19 08:39:10,237 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-03-19 08:39:10,237 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-03-19 08:39:10,237 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-03-19 08:39:10,238 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-03-19 08:39:10,244 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,245 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,249 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,249 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,258 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,266 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-03-19 08:39:10,266 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-03-19 08:39:10,267 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-03-19 08:39:10,267 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-03-19 08:39:10,267 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (1/1) ... [2022-03-19 08:39:10,276 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-03-19 08:39:10,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-03-19 08:39:10,291 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-03-19 08:39:10,303 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-03-19 08:39:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2022-03-19 08:39:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-03-19 08:39:10,323 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2022-03-19 08:39:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-03-19 08:39:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-03-19 08:39:10,324 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2022-03-19 08:39:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2022-03-19 08:39:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2022-03-19 08:39:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2022-03-19 08:39:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-03-19 08:39:10,324 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-03-19 08:39:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-03-19 08:39:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2022-03-19 08:39:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure main [2022-03-19 08:39:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2022-03-19 08:39:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-03-19 08:39:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-03-19 08:39:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-03-19 08:39:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-03-19 08:39:10,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-03-19 08:39:10,374 INFO L234 CfgBuilder]: Building ICFG [2022-03-19 08:39:10,375 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-03-19 08:39:19,197 INFO L275 CfgBuilder]: Performing block encoding [2022-03-19 08:39:19,201 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-03-19 08:39:19,201 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-03-19 08:39:19,203 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 08:39:19 BoogieIcfgContainer [2022-03-19 08:39:19,203 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-03-19 08:39:19,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-03-19 08:39:19,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-03-19 08:39:19,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-03-19 08:39:19,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.03 08:39:10" (1/3) ... [2022-03-19 08:39:19,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5d4304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 08:39:19, skipping insertion in model container [2022-03-19 08:39:19,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.03 08:39:10" (2/3) ... [2022-03-19 08:39:19,210 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f5d4304 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.03 08:39:19, skipping insertion in model container [2022-03-19 08:39:19,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.03 08:39:19" (3/3) ... [2022-03-19 08:39:19,211 INFO L111 eAbstractionObserver]: Analyzing ICFG sumt7.c [2022-03-19 08:39:19,216 INFO L205 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2022-03-19 08:39:19,216 INFO L164 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-03-19 08:39:19,243 INFO L339 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-03-19 08:39:19,248 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 [2022-03-19 08:39:19,248 INFO L341 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-03-19 08:39:19,257 INFO L276 IsEmpty]: Start isEmpty. Operand has 27 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 08:39:19,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-03-19 08:39:19,271 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 08:39:19,271 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 08:39:19,272 INFO L403 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 08:39:19,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 08:39:19,275 INFO L85 PathProgramCache]: Analyzing trace with hash 1555439542, now seen corresponding path program 1 times [2022-03-19 08:39:19,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 08:39:19,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1284001035] [2022-03-19 08:39:19,287 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 08:39:19,287 INFO L85 PathProgramCache]: Analyzing trace with hash 1555439542, now seen corresponding path program 2 times [2022-03-19 08:39:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 08:39:19,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1700447347] [2022-03-19 08:39:19,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 08:39:19,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 08:39:19,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 08:39:19,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 08:39:19,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 08:39:19,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 08:39:19,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 08:39:19,756 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1700447347] [2022-03-19 08:39:19,756 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1700447347] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 08:39:19,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 08:39:19,757 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 08:39:19,759 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 08:39:19,760 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1284001035] [2022-03-19 08:39:19,760 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1284001035] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 08:39:19,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 08:39:19,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-03-19 08:39:19,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184558175] [2022-03-19 08:39:19,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 08:39:19,765 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-03-19 08:39:19,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 08:39:19,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-03-19 08:39:19,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-03-19 08:39:19,791 INFO L87 Difference]: Start difference. First operand has 27 states, 19 states have (on average 1.5789473684210527) internal successors, (30), 21 states have internal predecessors, (30), 3 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 08:39:21,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:24,201 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:26,410 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:28,592 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:30,759 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:32,907 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.15s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:35,124 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:37,292 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:39,461 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:41,632 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.17s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:41,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 08:39:41,891 INFO L93 Difference]: Finished difference Result 63 states and 89 transitions. [2022-03-19 08:39:41,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-03-19 08:39:41,896 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-03-19 08:39:41,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 08:39:41,900 INFO L225 Difference]: With dead ends: 63 [2022-03-19 08:39:41,900 INFO L226 Difference]: Without dead ends: 32 [2022-03-19 08:39:41,902 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-03-19 08:39:41,904 INFO L912 BasicCegarLoop]: 24 mSDtfsCounter, 53 mSDsluCounter, 31 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 12 mSolverCounterUnsat, 10 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 10 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.9s IncrementalHoareTripleChecker+Time [2022-03-19 08:39:41,904 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 55 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 111 Invalid, 10 Unknown, 0 Unchecked, 21.9s Time] [2022-03-19 08:39:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2022-03-19 08:39:41,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2022-03-19 08:39:41,945 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 23 states have internal predecessors, (30), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 08:39:41,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2022-03-19 08:39:41,948 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2022-03-19 08:39:41,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 08:39:41,949 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2022-03-19 08:39:41,949 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 08:39:41,949 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2022-03-19 08:39:41,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-03-19 08:39:41,950 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 08:39:41,950 INFO L500 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 08:39:41,950 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-03-19 08:39:41,950 INFO L403 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 08:39:41,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 08:39:41,952 INFO L85 PathProgramCache]: Analyzing trace with hash 2040977129, now seen corresponding path program 1 times [2022-03-19 08:39:41,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 08:39:41,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1525318754] [2022-03-19 08:39:41,954 INFO L202 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2022-03-19 08:39:41,954 INFO L85 PathProgramCache]: Analyzing trace with hash 2040977129, now seen corresponding path program 2 times [2022-03-19 08:39:41,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 08:39:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982100191] [2022-03-19 08:39:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 08:39:41,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 08:39:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 08:39:42,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 08:39:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 08:39:42,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 08:39:42,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 08:39:42,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982100191] [2022-03-19 08:39:42,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982100191] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 08:39:42,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 08:39:42,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 08:39:42,223 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 08:39:42,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1525318754] [2022-03-19 08:39:42,223 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1525318754] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 08:39:42,223 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 08:39:42,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-03-19 08:39:42,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338212508] [2022-03-19 08:39:42,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 08:39:42,224 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-03-19 08:39:42,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 08:39:42,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-03-19 08:39:42,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-03-19 08:39:42,225 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 08:39:44,317 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:46,512 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:48,640 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.13s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:50,762 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:52,956 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-03-19 08:39:53,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 08:39:53,142 INFO L93 Difference]: Finished difference Result 45 states and 58 transitions. [2022-03-19 08:39:53,142 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-03-19 08:39:53,142 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 15 [2022-03-19 08:39:53,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 08:39:53,144 INFO L225 Difference]: With dead ends: 45 [2022-03-19 08:39:53,144 INFO L226 Difference]: Without dead ends: 30 [2022-03-19 08:39:53,144 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2022-03-19 08:39:53,145 INFO L912 BasicCegarLoop]: 23 mSDtfsCounter, 52 mSDsluCounter, 10 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 9 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-03-19 08:39:53,145 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 33 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 42 Invalid, 5 Unknown, 0 Unchecked, 10.9s Time] [2022-03-19 08:39:53,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2022-03-19 08:39:53,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2022-03-19 08:39:53,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 23 states have internal predecessors, (29), 4 states have call successors, (4), 4 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 3 states have call successors, (3) [2022-03-19 08:39:53,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 36 transitions. [2022-03-19 08:39:53,153 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 36 transitions. Word has length 15 [2022-03-19 08:39:53,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 08:39:53,153 INFO L478 AbstractCegarLoop]: Abstraction has 30 states and 36 transitions. [2022-03-19 08:39:53,153 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 4 states have internal predecessors, (11), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-03-19 08:39:53,153 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 36 transitions. [2022-03-19 08:39:53,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-03-19 08:39:53,154 INFO L492 BasicCegarLoop]: Found error trace [2022-03-19 08:39:53,154 INFO L500 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-03-19 08:39:53,154 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-03-19 08:39:53,154 INFO L403 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-03-19 08:39:53,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-03-19 08:39:53,154 INFO L85 PathProgramCache]: Analyzing trace with hash -1572266990, now seen corresponding path program 1 times [2022-03-19 08:39:53,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy ACCELERATED_INTERPOLATION [2022-03-19 08:39:53,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleAcceleratedInterpolation [1613074491] [2022-03-19 08:39:53,522 INFO L271 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2022-03-19 08:39:53,523 INFO L85 PathProgramCache]: Analyzing trace with hash 738488328, now seen corresponding path program 1 times [2022-03-19 08:39:53,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-03-19 08:39:53,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885384009] [2022-03-19 08:39:53,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-03-19 08:39:53,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-03-19 08:39:53,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 08:39:54,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-03-19 08:39:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-03-19 08:39:54,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-03-19 08:39:54,123 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-03-19 08:39:54,123 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885384009] [2022-03-19 08:39:54,123 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885384009] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 08:39:54,124 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 08:39:54,124 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-03-19 08:39:58,847 INFO L136 FreeRefinementEngine]: Strategy ACCELERATED_INTERPOLATION found an infeasible trace [2022-03-19 08:39:58,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleAcceleratedInterpolation [1613074491] [2022-03-19 08:39:58,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleAcceleratedInterpolation [1613074491] provided 1 perfect and 0 imperfect interpolant sequences [2022-03-19 08:39:58,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-03-19 08:39:58,848 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2022-03-19 08:39:58,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225703595] [2022-03-19 08:39:58,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-03-19 08:39:58,848 INFO L554 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-03-19 08:39:58,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy ACCELERATED_INTERPOLATION [2022-03-19 08:39:58,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-03-19 08:39:58,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=314, Unknown=1, NotChecked=0, Total=380 [2022-03-19 08:39:58,849 INFO L87 Difference]: Start difference. First operand 30 states and 36 transitions. Second operand has 18 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 12 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 08:39:59,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-03-19 08:39:59,310 INFO L93 Difference]: Finished difference Result 31 states and 37 transitions. [2022-03-19 08:39:59,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-03-19 08:39:59,311 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 12 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-03-19 08:39:59,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-03-19 08:39:59,311 INFO L225 Difference]: With dead ends: 31 [2022-03-19 08:39:59,311 INFO L226 Difference]: Without dead ends: 0 [2022-03-19 08:39:59,311 INFO L911 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 5.2s TimeCoverageRelationStatistics Valid=147, Invalid=608, Unknown=1, NotChecked=0, Total=756 [2022-03-19 08:39:59,312 INFO L912 BasicCegarLoop]: 8 mSDtfsCounter, 39 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 45 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-03-19 08:39:59,312 INFO L913 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 45 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-03-19 08:39:59,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-03-19 08:39:59,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-03-19 08:39:59,313 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) [2022-03-19 08:39:59,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-03-19 08:39:59,313 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 22 [2022-03-19 08:39:59,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-03-19 08:39:59,313 INFO L478 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-03-19 08:39:59,313 INFO L479 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 1.0666666666666667) internal successors, (16), 12 states have internal predecessors, (16), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-03-19 08:39:59,313 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-03-19 08:39:59,313 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-03-19 08:39:59,315 INFO L788 garLoopResultBuilder]: Registering result SAFE for location __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-03-19 08:39:59,316 WARN L460 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-03-19 08:39:59,317 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2022-03-19 08:39:59,825 INFO L882 garLoopResultBuilder]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2022-03-19 08:39:59,825 INFO L882 garLoopResultBuilder]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2022-03-19 08:39:59,825 INFO L882 garLoopResultBuilder]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2022-03-19 08:39:59,825 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notENTRY(lines 5 7) no Hoare annotation was computed. [2022-03-19 08:39:59,826 INFO L882 garLoopResultBuilder]: For program point L6(line 6) no Hoare annotation was computed. [2022-03-19 08:39:59,826 INFO L882 garLoopResultBuilder]: For program point L6-2(lines 5 7) no Hoare annotation was computed. [2022-03-19 08:39:59,826 INFO L882 garLoopResultBuilder]: For program point assume_abort_if_notEXIT(lines 5 7) no Hoare annotation was computed. [2022-03-19 08:39:59,826 INFO L878 garLoopResultBuilder]: At program point L33(lines 33 36) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001))) [2022-03-19 08:39:59,826 INFO L878 garLoopResultBuilder]: At program point L31(lines 31 36) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001))) [2022-03-19 08:39:59,826 INFO L878 garLoopResultBuilder]: At program point L33-2(lines 23 36) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001)) (and (= main_~k~0 0) (= main_~v2~0 0) (= main_~v1~0 1) (= main_~j~0 0) (= main_~l~0 0) (= main_~i~0 0) (= main_~v4~0 0) (< (mod main_~l~0 4294967296) (mod main_~n~0 4294967296)) (or (<= 0 (div main_~n~0 4294967296)) (<= (+ 4274967295 main_~n~0) 0)) (= main_~v3~0 0))) [2022-03-19 08:39:59,826 INFO L878 garLoopResultBuilder]: At program point L29(lines 29 36) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001))) [2022-03-19 08:39:59,826 INFO L878 garLoopResultBuilder]: At program point L27(lines 27 36) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001))) [2022-03-19 08:39:59,826 INFO L878 garLoopResultBuilder]: At program point L25(lines 25 36) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001))) [2022-03-19 08:39:59,826 INFO L885 garLoopResultBuilder]: At program point mainEXIT(lines 16 41) the Hoare annotation is: true [2022-03-19 08:39:59,826 INFO L878 garLoopResultBuilder]: At program point L23(lines 23 36) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001)) (and (= main_~k~0 0) (= main_~v2~0 0) (= main_~j~0 0) (= main_~l~0 0) (= main_~i~0 0) (= main_~v4~0 0) (< (mod main_~l~0 4294967296) (mod main_~n~0 4294967296)) (or (<= 0 (div main_~n~0 4294967296)) (<= (+ 4274967295 main_~n~0) 0)) (= main_~v1~0 0) (= main_~v3~0 0))) [2022-03-19 08:39:59,827 INFO L885 garLoopResultBuilder]: At program point L21-2(lines 21 39) the Hoare annotation is: true [2022-03-19 08:39:59,827 INFO L885 garLoopResultBuilder]: At program point mainFINAL(lines 16 41) the Hoare annotation is: true [2022-03-19 08:39:59,827 INFO L878 garLoopResultBuilder]: At program point L38(line 38) the Hoare annotation is: (or (not (<= 20000001 ~SIZE~0)) (and (= main_~k~0 0) (= main_~v2~0 0) (= main_~v1~0 1) (= main_~j~0 0) (= main_~l~0 1) (= main_~i~0 0) (= main_~v4~0 0) (< 0 (mod main_~n~0 4294967296)) (or (<= 0 (div main_~n~0 4294967296)) (<= (+ 4274967295 main_~n~0) 0)) (= main_~v3~0 0)) (not (<= ~SIZE~0 20000001))) [2022-03-19 08:39:59,827 INFO L878 garLoopResultBuilder]: At program point L38-1(lines 21 39) the Hoare annotation is: (let ((.cse0 (= main_~k~0 0)) (.cse1 (= main_~v2~0 0)) (.cse2 (= main_~j~0 0)) (.cse3 (= main_~i~0 0)) (.cse4 (= main_~v4~0 0)) (.cse5 (or (<= 0 (div main_~n~0 4294967296)) (<= (+ 4274967295 main_~n~0) 0))) (.cse6 (= main_~v3~0 0))) (or (not (<= 20000001 ~SIZE~0)) (and .cse0 .cse1 (= main_~v1~0 1) .cse2 (= main_~l~0 1) .cse3 .cse4 (< 0 (mod main_~n~0 4294967296)) .cse5 .cse6) (and .cse0 .cse1 .cse2 (= main_~l~0 0) .cse3 .cse4 .cse5 (= main_~v1~0 0) .cse6) (not (<= ~SIZE~0 20000001)))) [2022-03-19 08:39:59,827 INFO L885 garLoopResultBuilder]: At program point mainENTRY(lines 16 41) the Hoare annotation is: true [2022-03-19 08:39:59,827 INFO L878 garLoopResultBuilder]: At program point L20(line 20) the Hoare annotation is: (or (and (= main_~k~0 0) (= main_~v2~0 0) (= main_~j~0 0) (= main_~l~0 0) (= main_~i~0 0) (= main_~v4~0 0) (= main_~v1~0 0) (= main_~v3~0 0)) (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001))) [2022-03-19 08:39:59,827 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2022-03-19 08:39:59,827 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(~SIZE~0)| ~SIZE~0) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#NULL.base)| |#NULL.base|)) [2022-03-19 08:39:59,827 INFO L878 garLoopResultBuilder]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2022-03-19 08:39:59,827 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2022-03-19 08:39:59,827 INFO L878 garLoopResultBuilder]: At program point L-1(line -1) the Hoare annotation is: (and (<= 20000001 ~SIZE~0) (<= ~SIZE~0 20000001)) [2022-03-19 08:39:59,828 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2022-03-19 08:39:59,828 INFO L885 garLoopResultBuilder]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2022-03-19 08:39:59,828 INFO L885 garLoopResultBuilder]: At program point __VERIFIER_assertENTRY(lines 8 13) the Hoare annotation is: true [2022-03-19 08:39:59,828 INFO L878 garLoopResultBuilder]: At program point L10(line 10) the Hoare annotation is: (or (and (not (<= (+ 4274967295 main_~n~0) 0)) (not (<= 0 (div main_~n~0 4294967296)))) (not (= |__VERIFIER_assert_#in~cond| 1)) (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001)) (not (< 0 (mod main_~n~0 4294967296)))) [2022-03-19 08:39:59,828 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertEXIT(lines 8 13) the Hoare annotation is: (or (and (not (<= (+ 4274967295 main_~n~0) 0)) (not (<= 0 (div main_~n~0 4294967296)))) (not (= |__VERIFIER_assert_#in~cond| 1)) (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= ~SIZE~0 20000001)) (not (< 0 (mod main_~n~0 4294967296)))) [2022-03-19 08:39:59,828 INFO L878 garLoopResultBuilder]: At program point L9(lines 9 11) the Hoare annotation is: (or (and (not (<= (+ 4274967295 main_~n~0) 0)) (not (<= 0 (div main_~n~0 4294967296)))) (not (= |__VERIFIER_assert_#in~cond| 1)) (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= ~SIZE~0 20000001)) (not (< 0 (mod main_~n~0 4294967296)))) [2022-03-19 08:39:59,828 INFO L878 garLoopResultBuilder]: At program point L9-2(lines 8 13) the Hoare annotation is: (or (and (not (<= (+ 4274967295 main_~n~0) 0)) (not (<= 0 (div main_~n~0 4294967296)))) (not (= |__VERIFIER_assert_#in~cond| 1)) (not (<= 20000001 ~SIZE~0)) (= |__VERIFIER_assert_#in~cond| __VERIFIER_assert_~cond) (not (<= ~SIZE~0 20000001)) (not (< 0 (mod main_~n~0 4294967296)))) [2022-03-19 08:39:59,828 INFO L878 garLoopResultBuilder]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) the Hoare annotation is: (or (and (not (<= (+ 4274967295 main_~n~0) 0)) (not (<= 0 (div main_~n~0 4294967296)))) (not (= |__VERIFIER_assert_#in~cond| 1)) (not (<= 20000001 ~SIZE~0)) (not (<= ~SIZE~0 20000001)) (not (< 0 (mod main_~n~0 4294967296)))) [2022-03-19 08:39:59,830 INFO L718 BasicCegarLoop]: Path program histogram: [2, 2, 1, 1] [2022-03-19 08:39:59,832 INFO L180 ceAbstractionStarter]: Computing trace abstraction results [2022-03-19 08:39:59,845 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.03 08:39:59 BoogieIcfgContainer [2022-03-19 08:39:59,846 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-03-19 08:39:59,847 INFO L158 Benchmark]: Toolchain (without parser) took 49843.56ms. Allocated memory was 194.0MB in the beginning and 294.6MB in the end (delta: 100.7MB). Free memory was 140.0MB in the beginning and 233.8MB in the end (delta: -93.8MB). Peak memory consumption was 6.7MB. Max. memory is 8.0GB. [2022-03-19 08:39:59,847 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. [2022-03-19 08:39:59,850 INFO L158 Benchmark]: CACSL2BoogieTranslator took 233.17ms. Allocated memory is still 194.0MB. Free memory was 139.8MB in the beginning and 167.9MB in the end (delta: -28.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. [2022-03-19 08:39:59,850 INFO L158 Benchmark]: Boogie Preprocessor took 28.60ms. Allocated memory is still 194.0MB. Free memory was 167.9MB in the beginning and 166.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. [2022-03-19 08:39:59,850 INFO L158 Benchmark]: RCFGBuilder took 8936.97ms. Allocated memory is still 194.0MB. Free memory was 166.3MB in the beginning and 154.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. [2022-03-19 08:39:59,850 INFO L158 Benchmark]: TraceAbstraction took 40641.25ms. Allocated memory was 194.0MB in the beginning and 294.6MB in the end (delta: 100.7MB). Free memory was 154.3MB in the beginning and 233.8MB in the end (delta: -79.5MB). Peak memory consumption was 22.6MB. Max. memory is 8.0GB. [2022-03-19 08:39:59,854 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 194.0MB. Free memory is still 156.6MB. There was no memory consumed. Max. memory is 8.0GB. * CACSL2BoogieTranslator took 233.17ms. Allocated memory is still 194.0MB. Free memory was 139.8MB in the beginning and 167.9MB in the end (delta: -28.1MB). Peak memory consumption was 9.4MB. Max. memory is 8.0GB. * Boogie Preprocessor took 28.60ms. Allocated memory is still 194.0MB. Free memory was 167.9MB in the beginning and 166.3MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 8.0GB. * RCFGBuilder took 8936.97ms. Allocated memory is still 194.0MB. Free memory was 166.3MB in the beginning and 154.7MB in the end (delta: 11.5MB). Peak memory consumption was 11.5MB. Max. memory is 8.0GB. * TraceAbstraction took 40641.25ms. Allocated memory was 194.0MB in the beginning and 294.6MB in the end (delta: 100.7MB). Free memory was 154.3MB in the beginning and 233.8MB in the end (delta: -79.5MB). Peak memory consumption was 22.6MB. 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: 10]: 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, 34 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 40.6s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 33.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 15 mSolverCounterUnknown, 145 SdHoareTripleChecker+Valid, 32.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 144 mSDsluCounter, 133 SdHoareTripleChecker+Invalid, 30.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 78 mSDsCounter, 41 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 233 IncrementalHoareTripleChecker+Invalid, 289 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 41 mSolverCounterUnsat, 55 mSDtfsCounter, 233 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 57 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 5.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=1, InterpolantAutomatonStates: 27, 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, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 27 LocationsWithAnnotation, 45 PreInvPairs, 63 NumberOfFragments, 527 HoareAnnotationTreeSize, 45 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 27 FomulaSimplificationsInter, 287 FormulaSimplificationTreeSizeReductionInter, 0.5s 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: 21]: Loop Invariant Derived loop invariant: ((!(20000001 <= SIZE) || (((((((((k == 0 && v2 == 0) && v1 == 1) && j == 0) && l == 1) && i == 0) && v4 == 0) && 0 < n % 4294967296) && (0 <= n / 4294967296 || 4274967295 + n <= 0)) && v3 == 0)) || ((((((((k == 0 && v2 == 0) && j == 0) && l == 0) && i == 0) && v4 == 0) && (0 <= n / 4294967296 || 4274967295 + n <= 0)) && v1 == 0) && v3 == 0)) || !(SIZE <= 20000001) - ProcedureContractResult [Line: 16]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 8]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: (((((!(4274967295 + n <= 0) && !(0 <= n / 4294967296)) || !(\old(cond) == 1)) || !(20000001 <= SIZE)) || \old(cond) == cond) || !(SIZE <= 20000001)) || !(0 < n % 4294967296) RESULT: Ultimate proved your program to be correct! [2022-03-19 08:39:59,899 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...