/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 20:11:25,679 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 20:11:25,682 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 20:11:25,716 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-21 20:11:25,730 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 20:11:25,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 20:11:25,735 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 20:11:25,737 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 20:11:25,751 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 20:11:25,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 20:11:25,759 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 20:11:25,763 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 20:11:25,765 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 20:11:25,767 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 20:11:25,773 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 20:11:25,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 20:11:25,782 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 20:11:25,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 20:11:25,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 20:11:25,800 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 20:11:25,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-21 20:11:25,826 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 20:11:25,826 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 20:11:25,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 20:11:25,831 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 20:11:25,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 20:11:25,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 20:11:25,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 20:11:25,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 20:11:25,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 20:11:25,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 20:11:25,833 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 20:11:25,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 20:11:25,834 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 20:11:25,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 20:11:25,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 20:11:25,835 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-21 20:11:25,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-21 20:11:25,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 20:11:25,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:11:25,836 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 20:11:25,836 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-21 20:11:25,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 20:11:25,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 20:11:26,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 20:11:26,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 20:11:26,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 20:11:26,282 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 20:11:26,284 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 20:11:26,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2021-02-21 20:11:26,366 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236eaca45/6a5dddb71ed24155938261537436d24b/FLAG3dbe771ac [2021-02-21 20:11:27,004 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 20:11:27,005 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2021-02-21 20:11:27,015 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236eaca45/6a5dddb71ed24155938261537436d24b/FLAG3dbe771ac [2021-02-21 20:11:27,368 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/236eaca45/6a5dddb71ed24155938261537436d24b [2021-02-21 20:11:27,377 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 20:11:27,390 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 20:11:27,391 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 20:11:27,391 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 20:11:27,395 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 20:11:27,396 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,398 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65504ffb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27, skipping insertion in model container [2021-02-21 20:11:27,398 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,406 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 20:11:27,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 20:11:27,576 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c[1126,1139] [2021-02-21 20:11:27,579 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:11:27,590 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 20:11:27,608 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c[1126,1139] [2021-02-21 20:11:27,609 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 20:11:27,625 INFO L208 MainTranslator]: Completed translation [2021-02-21 20:11:27,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27 WrapperNode [2021-02-21 20:11:27,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 20:11:27,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 20:11:27,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 20:11:27,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 20:11:27,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,648 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,648 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,654 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,656 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,658 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... [2021-02-21 20:11:27,660 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 20:11:27,661 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 20:11:27,661 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 20:11:27,661 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 20:11:27,662 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 20:11:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 20:11:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 20:11:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 20:11:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-02-21 20:11:27,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 20:11:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 20:11:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 20:11:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 20:11:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 20:11:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 20:11:27,756 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-02-21 20:11:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 20:11:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 20:11:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 20:11:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 20:11:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 20:11:27,757 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 20:11:27,758 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 20:11:27,993 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 20:11:27,993 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 20:11:27,995 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:11:27 BoogieIcfgContainer [2021-02-21 20:11:27,995 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 20:11:27,997 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 20:11:27,997 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 20:11:28,001 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 20:11:28,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 08:11:27" (1/3) ... [2021-02-21 20:11:28,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75109a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:11:28, skipping insertion in model container [2021-02-21 20:11:28,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 08:11:27" (2/3) ... [2021-02-21 20:11:28,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75109a94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 08:11:28, skipping insertion in model container [2021-02-21 20:11:28,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 08:11:27" (3/3) ... [2021-02-21 20:11:28,005 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-02-21 20:11:28,013 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-21 20:11:28,018 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 20:11:28,057 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 20:11:28,111 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 20:11:28,111 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 20:11:28,111 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-21 20:11:28,112 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 20:11:28,112 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 20:11:28,112 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 20:11:28,112 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 20:11:28,112 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 20:11:28,148 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-21 20:11:28,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-21 20:11:28,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:28,174 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:11:28,177 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:28,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:28,193 INFO L82 PathProgramCache]: Analyzing trace with hash 1808746938, now seen corresponding path program 1 times [2021-02-21 20:11:28,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:28,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941548746] [2021-02-21 20:11:28,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:28,363 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:28,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:28,734 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:28,735 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:28,759 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:28,763 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:11:28,812 WARN L141 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-02-21 20:11:28,816 WARN L147 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size 12 [2021-02-21 20:11:28,835 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:28,836 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:28,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:28,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:28,930 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:28,932 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:28,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 20:11:28,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:28,985 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:28,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:28,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:28,996 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:29,010 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,011 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:29,024 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,026 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:11:29,046 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941548746] [2021-02-21 20:11:29,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:29,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-21 20:11:29,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561258271] [2021-02-21 20:11:29,054 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-21 20:11:29,054 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:29,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-21 20:11:29,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-21 20:11:29,073 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states. [2021-02-21 20:11:29,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:29,686 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-02-21 20:11:29,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-21 20:11:29,689 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-02-21 20:11:29,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:29,699 INFO L225 Difference]: With dead ends: 65 [2021-02-21 20:11:29,699 INFO L226 Difference]: Without dead ends: 45 [2021-02-21 20:11:29,703 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2021-02-21 20:11:29,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-21 20:11:29,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-02-21 20:11:29,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-21 20:11:29,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-02-21 20:11:29,762 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2021-02-21 20:11:29,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:29,763 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-02-21 20:11:29,763 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-21 20:11:29,764 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-02-21 20:11:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-21 20:11:29,766 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:29,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:11:29,767 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 20:11:29,767 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:29,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:29,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1330986061, now seen corresponding path program 1 times [2021-02-21 20:11:29,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:29,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1794010522] [2021-02-21 20:11:29,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:29,772 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:29,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:29,831 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,832 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:29,834 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:29,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:29,886 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,888 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:29,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 20:11:29,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:29,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:29,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-21 20:11:29,915 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,917 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-21 20:11:29,928 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:29,929 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:29,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 20:11:29,933 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1794010522] [2021-02-21 20:11:29,933 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:29,933 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 20:11:29,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495386133] [2021-02-21 20:11:29,935 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 20:11:29,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:29,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 20:11:29,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-21 20:11:29,941 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 5 states. [2021-02-21 20:11:30,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:30,121 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-02-21 20:11:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 20:11:30,122 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2021-02-21 20:11:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:30,129 INFO L225 Difference]: With dead ends: 61 [2021-02-21 20:11:30,130 INFO L226 Difference]: Without dead ends: 47 [2021-02-21 20:11:30,132 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:11:30,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-21 20:11:30,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-02-21 20:11:30,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-21 20:11:30,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-02-21 20:11:30,163 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 33 [2021-02-21 20:11:30,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:30,164 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-02-21 20:11:30,165 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 20:11:30,165 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-02-21 20:11:30,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-21 20:11:30,169 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:30,170 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:11:30,170 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 20:11:30,170 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:30,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:30,171 INFO L82 PathProgramCache]: Analyzing trace with hash 1283201204, now seen corresponding path program 1 times [2021-02-21 20:11:30,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:30,172 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273253355] [2021-02-21 20:11:30,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:30,177 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:30,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:30,270 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:30,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:11:30,280 WARN L141 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-02-21 20:11:30,281 WARN L147 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size 12 [2021-02-21 20:11:30,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:30,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:30,318 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,319 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:30,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 20:11:30,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:30,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,345 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:30,351 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:30,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-21 20:11:30,375 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,376 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:11:30,388 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,389 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 20:11:30,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 20:11:30,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:30,413 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,414 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:30,415 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,415 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:30,416 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,417 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:30,430 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:30,431 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 20:11:30,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-21 20:11:30,462 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273253355] [2021-02-21 20:11:30,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:30,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-21 20:11:30,463 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376987470] [2021-02-21 20:11:30,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-21 20:11:30,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:30,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-21 20:11:30,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-02-21 20:11:30,465 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 12 states. [2021-02-21 20:11:31,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:31,051 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-02-21 20:11:31,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 20:11:31,052 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2021-02-21 20:11:31,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:31,054 INFO L225 Difference]: With dead ends: 58 [2021-02-21 20:11:31,054 INFO L226 Difference]: Without dead ends: 52 [2021-02-21 20:11:31,055 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-02-21 20:11:31,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-21 20:11:31,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-02-21 20:11:31,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-21 20:11:31,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-02-21 20:11:31,070 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 42 [2021-02-21 20:11:31,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:31,071 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-02-21 20:11:31,071 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-21 20:11:31,071 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-02-21 20:11:31,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-21 20:11:31,073 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:31,073 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:11:31,073 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 20:11:31,073 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:31,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:31,074 INFO L82 PathProgramCache]: Analyzing trace with hash 816185936, now seen corresponding path program 1 times [2021-02-21 20:11:31,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:31,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [180961768] [2021-02-21 20:11:31,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:31,077 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:31,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,102 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,103 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,104 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:31,107 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,107 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,134 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,134 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 20:11:31,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,147 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,148 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:31,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,154 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:11:31,162 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:11:31,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-21 20:11:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,179 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 20:11:31,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [180961768] [2021-02-21 20:11:31,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:31,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:11:31,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973727147] [2021-02-21 20:11:31,180 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:11:31,180 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:31,181 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:11:31,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:11:31,181 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 7 states. [2021-02-21 20:11:31,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:31,368 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-02-21 20:11:31,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:11:31,369 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2021-02-21 20:11:31,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:31,370 INFO L225 Difference]: With dead ends: 56 [2021-02-21 20:11:31,370 INFO L226 Difference]: Without dead ends: 50 [2021-02-21 20:11:31,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:11:31,372 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-21 20:11:31,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-21 20:11:31,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-21 20:11:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-02-21 20:11:31,385 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 43 [2021-02-21 20:11:31,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:31,386 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-02-21 20:11:31,386 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:11:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-02-21 20:11:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-21 20:11:31,387 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 20:11:31,388 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 20:11:31,388 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-21 20:11:31,388 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 20:11:31,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 20:11:31,389 INFO L82 PathProgramCache]: Analyzing trace with hash 2118403698, now seen corresponding path program 1 times [2021-02-21 20:11:31,389 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-21 20:11:31,389 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [424294887] [2021-02-21 20:11:31,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 20:11:31,391 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-21 20:11:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,417 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,418 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,418 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,419 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 20:11:31,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,442 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,442 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-21 20:11:31,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,453 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,454 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,454 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,455 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:31,458 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,459 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-21 20:11:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,469 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,469 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,470 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,471 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 20:11:31,475 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,476 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 20:11:31,484 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,484 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-21 20:11:31,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-21 20:11:31,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 20:11:31,495 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 20:11:31,496 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 20:11:31,501 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-21 20:11:31,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [424294887] [2021-02-21 20:11:31,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 20:11:31,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 20:11:31,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288905991] [2021-02-21 20:11:31,503 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 20:11:31,503 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-21 20:11:31,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 20:11:31,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-21 20:11:31,504 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 7 states. [2021-02-21 20:11:31,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 20:11:31,697 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-02-21 20:11:31,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-21 20:11:31,698 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2021-02-21 20:11:31,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 20:11:31,698 INFO L225 Difference]: With dead ends: 57 [2021-02-21 20:11:31,698 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 20:11:31,700 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-21 20:11:31,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 20:11:31,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 20:11:31,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 20:11:31,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 20:11:31,700 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-02-21 20:11:31,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 20:11:31,701 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 20:11:31,701 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 20:11:31,701 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 20:11:31,701 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 20:11:31,701 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-21 20:11:31,703 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 20:11:32,603 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-21 20:11:32,603 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-21 20:11:32,603 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-21 20:11:32,604 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-21 20:11:32,604 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-21 20:11:32,604 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:11:32,604 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-21 20:11:32,604 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-21 20:11:32,604 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-21 20:11:32,605 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-21 20:11:32,605 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-21 20:11:32,605 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-21 20:11:32,605 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:11:32,605 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-21 20:11:32,605 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 20:11:32,605 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 20:11:32,606 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-21 20:11:32,606 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-21 20:11:32,606 INFO L192 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: true [2021-02-21 20:11:32,606 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-21 20:11:32,606 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-21 20:11:32,606 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 28 47) the Hoare annotation is: true [2021-02-21 20:11:32,607 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 28 47) the Hoare annotation is: true [2021-02-21 20:11:32,607 INFO L185 CegarLoopUtils]: At program point L42(lines 42 46) the Hoare annotation is: (and (<= (+ main_~m~0 main_~n~0) main_~result~0) (< main_~result~0 (+ main_~m~0 main_~n~0 1))) [2021-02-21 20:11:32,607 INFO L192 CegarLoopUtils]: At program point L36(lines 36 40) the Hoare annotation is: true [2021-02-21 20:11:32,610 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) the Hoare annotation is: false [2021-02-21 20:11:32,610 INFO L192 CegarLoopUtils]: At program point L30(lines 30 34) the Hoare annotation is: true [2021-02-21 20:11:32,611 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 28 47) the Hoare annotation is: true [2021-02-21 20:11:32,611 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: false [2021-02-21 20:11:32,611 INFO L185 CegarLoopUtils]: At program point L45-1(line 45) the Hoare annotation is: false [2021-02-21 20:11:32,611 INFO L185 CegarLoopUtils]: At program point L43(line 43) the Hoare annotation is: (and (<= (+ main_~m~0 main_~n~0) main_~result~0) (< main_~result~0 (+ main_~m~0 main_~n~0 1))) [2021-02-21 20:11:32,611 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (<= 0 main_~n~0) [2021-02-21 20:11:32,612 INFO L185 CegarLoopUtils]: At program point L41-1(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= |main_#t~ret11| .cse0) (<= .cse0 |main_#t~ret11|))) [2021-02-21 20:11:32,612 INFO L192 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: true [2021-02-21 20:11:32,614 INFO L185 CegarLoopUtils]: At program point L41-2(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= |main_#t~ret11| .cse0) (<= .cse0 |main_#t~ret11|))) [2021-02-21 20:11:32,614 INFO L185 CegarLoopUtils]: At program point L41-3(line 41) the Hoare annotation is: (let ((.cse0 (+ main_~m~0 main_~n~0))) (and (<= .cse0 main_~result~0) (< main_~result~0 (+ main_~m~0 main_~n~0 1)) (<= |main_#t~ret11| .cse0) (<= .cse0 |main_#t~ret11|))) [2021-02-21 20:11:32,614 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-21 20:11:32,615 INFO L192 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: true [2021-02-21 20:11:32,615 INFO L185 CegarLoopUtils]: At program point L23(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-21 20:11:32,615 INFO L185 CegarLoopUtils]: At program point L22(lines 22 24) the Hoare annotation is: (and (<= addition_~n 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (not (= addition_~n 0))) [2021-02-21 20:11:32,615 INFO L185 CegarLoopUtils]: At program point L23-1(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-21 20:11:32,615 INFO L185 CegarLoopUtils]: At program point additionFINAL(lines 15 25) the Hoare annotation is: (let ((.cse0 (= |addition_#in~m| addition_~m)) (.cse1 (= |addition_#in~n| addition_~n))) (or (and (<= (+ addition_~n 1) 0) .cse0 .cse1) (let ((.cse2 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 .cse1 (<= .cse2 |addition_#res|) (<= |addition_#res| .cse2))))) [2021-02-21 20:11:32,615 INFO L185 CegarLoopUtils]: At program point L23-2(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-21 20:11:32,616 INFO L185 CegarLoopUtils]: At program point L20(line 20) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= 1 addition_~n)) [2021-02-21 20:11:32,616 INFO L185 CegarLoopUtils]: At program point L23-3(line 23) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-21 20:11:32,616 INFO L185 CegarLoopUtils]: At program point L19(lines 19 21) the Hoare annotation is: (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (not (= addition_~n 0))) [2021-02-21 20:11:32,616 INFO L185 CegarLoopUtils]: At program point L20-1(line 20) the Hoare annotation is: (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= |addition_#t~ret7| .cse0) (<= .cse0 |addition_#t~ret7|) (<= 1 addition_~n))) [2021-02-21 20:11:32,617 INFO L185 CegarLoopUtils]: At program point L20-2(line 20) the Hoare annotation is: (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= |addition_#t~ret7| .cse0) (<= .cse0 |addition_#t~ret7|) (<= 1 addition_~n))) [2021-02-21 20:11:32,617 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (and (= |addition_#in~n| 0) (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n)) [2021-02-21 20:11:32,620 INFO L185 CegarLoopUtils]: At program point L20-3(line 20) the Hoare annotation is: (let ((.cse0 (+ |addition_#in~n| |addition_#in~m|))) (and (= |addition_#in~m| addition_~m) (= |addition_#in~n| addition_~n) (<= |addition_#t~ret7| .cse0) (<= .cse0 |addition_#res|) (<= .cse0 |addition_#t~ret7|) (<= 1 addition_~n) (<= |addition_#res| .cse0))) [2021-02-21 20:11:32,620 INFO L185 CegarLoopUtils]: At program point L16(lines 16 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2021-02-21 20:11:32,621 INFO L185 CegarLoopUtils]: At program point L15(lines 15 25) the Hoare annotation is: (= |addition_#in~m| addition_~m) [2021-02-21 20:11:32,621 INFO L192 CegarLoopUtils]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-02-21 20:11:32,621 INFO L185 CegarLoopUtils]: At program point additionEXIT(lines 15 25) the Hoare annotation is: (let ((.cse0 (= |addition_#in~m| addition_~m)) (.cse1 (= |addition_#in~n| addition_~n))) (or (and (<= (+ addition_~n 1) 0) .cse0 .cse1) (let ((.cse2 (+ |addition_#in~n| |addition_#in~m|))) (and .cse0 .cse1 (<= .cse2 |addition_#res|) (<= |addition_#res| .cse2))))) [2021-02-21 20:11:32,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 08:11:32 BoogieIcfgContainer [2021-02-21 20:11:32,661 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 20:11:32,666 INFO L168 Benchmark]: Toolchain (without parser) took 5283.36 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 126.6 MB in the beginning and 190.6 MB in the end (delta: -64.1 MB). Peak memory consumption was 119.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:32,666 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.2 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 20:11:32,667 INFO L168 Benchmark]: CACSL2BoogieTranslator took 234.84 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:32,668 INFO L168 Benchmark]: Boogie Preprocessor took 33.35 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:32,668 INFO L168 Benchmark]: RCFGBuilder took 334.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 98.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:32,669 INFO L168 Benchmark]: TraceAbstraction took 4664.28 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 98.4 MB in the beginning and 190.6 MB in the end (delta: -92.2 MB). Peak memory consumption was 91.1 MB. Max. memory is 8.0 GB. [2021-02-21 20:11:32,678 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 151.0 MB. Free memory was 124.4 MB in the beginning and 124.2 MB in the end (delta: 215.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 234.84 ms. Allocated memory is still 151.0 MB. Free memory was 125.5 MB in the beginning and 116.2 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.35 ms. Allocated memory is still 151.0 MB. Free memory was 116.2 MB in the beginning and 114.8 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 334.23 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 98.9 MB in the end (delta: 15.7 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4664.28 ms. Allocated memory was 151.0 MB in the beginning and 218.1 MB in the end (delta: 67.1 MB). Free memory was 98.4 MB in the beginning and 190.6 MB in the end (delta: -92.2 MB). Peak memory consumption was 91.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 45]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 28]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 15]: Procedure Contract for addition Derived contract for procedure addition: ((n + 1 <= 0 && \old(m) == m) && \old(n) == n) || (((\old(m) == m && \old(n) == n) && \old(n) + \old(m) <= \result) && \result <= \old(n) + \old(m)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 54 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 294 SDslu, 241 SDs, 0 SdLazy, 636 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 51 LocationsWithAnnotation, 83 PreInvPairs, 133 NumberOfFragments, 364 HoareAnnotationTreeSize, 83 FomulaSimplifications, 3946 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 51 FomulaSimplificationsInter, 1504 FormulaSimplificationTreeSizeReductionInter, 0.6s 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...