/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/recursive/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-24 03:56:47,558 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-24 03:56:47,561 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-24 03:56:47,596 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-24 03:56:47,608 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-24 03:56:47,610 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-24 03:56:47,611 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-24 03:56:47,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-24 03:56:47,613 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-24 03:56:47,614 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-24 03:56:47,616 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-24 03:56:47,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-24 03:56:47,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-24 03:56:47,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-24 03:56:47,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-24 03:56:47,624 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-24 03:56:47,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-24 03:56:47,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-24 03:56:47,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-24 03:56:47,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-24 03:56:47,645 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-24 03:56:47,659 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-24 03:56:47,659 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-24 03:56:47,660 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-24 03:56:47,661 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-24 03:56:47,661 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-24 03:56:47,661 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-24 03:56:47,661 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-24 03:56:47,661 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-24 03:56:47,662 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-24 03:56:47,662 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-24 03:56:47,662 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-24 03:56:47,662 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-24 03:56:47,663 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-24 03:56:47,663 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-24 03:56:47,663 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-24 03:56:47,663 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-24 03:56:47,663 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-24 03:56:47,664 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-24 03:56:47,664 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-24 03:56:47,664 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-24 03:56:47,664 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-24 03:56:47,665 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-24 03:56:47,665 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-24 03:56:47,665 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-24 03:56:48,039 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-24 03:56:48,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-24 03:56:48,070 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-24 03:56:48,072 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-24 03:56:48,077 INFO L275 PluginConnector]: CDTParser initialized [2021-02-24 03:56:48,079 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2021-02-24 03:56:48,178 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a08d71c9/b1a718bd71614a83a93b6e935618b290/FLAGe918d970e [2021-02-24 03:56:48,842 INFO L306 CDTParser]: Found 1 translation units. [2021-02-24 03:56:48,842 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive/Addition01-2.c [2021-02-24 03:56:48,850 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a08d71c9/b1a718bd71614a83a93b6e935618b290/FLAGe918d970e [2021-02-24 03:56:49,212 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a08d71c9/b1a718bd71614a83a93b6e935618b290 [2021-02-24 03:56:49,218 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-24 03:56:49,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-24 03:56:49,237 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:49,237 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-24 03:56:49,241 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-24 03:56:49,242 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cd6e96f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49, skipping insertion in model container [2021-02-24 03:56:49,244 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,253 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-24 03:56:49,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-24 03:56:49,435 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] [2021-02-24 03:56:49,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:49,452 INFO L203 MainTranslator]: Completed pre-run [2021-02-24 03:56:49,475 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] [2021-02-24 03:56:49,476 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-24 03:56:49,495 INFO L208 MainTranslator]: Completed translation [2021-02-24 03:56:49,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49 WrapperNode [2021-02-24 03:56:49,496 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-24 03:56:49,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-24 03:56:49,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-24 03:56:49,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-24 03:56:49,513 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,523 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,523 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,530 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,533 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,534 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (1/1) ... [2021-02-24 03:56:49,537 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-24 03:56:49,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-24 03:56:49,538 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-24 03:56:49,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-24 03:56:49,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (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 [2021-02-24 03:56:49,694 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-24 03:56:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-24 03:56:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-24 03:56:49,695 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2021-02-24 03:56:49,696 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-24 03:56:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-24 03:56:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-24 03:56:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-24 03:56:49,696 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-24 03:56:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-24 03:56:49,697 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2021-02-24 03:56:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-24 03:56:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-24 03:56:49,698 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-24 03:56:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-24 03:56:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-24 03:56:49,699 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-24 03:56:49,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-24 03:56:50,309 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-24 03:56:50,311 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-24 03:56:50,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:50 BoogieIcfgContainer [2021-02-24 03:56:50,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-24 03:56:50,318 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-24 03:56:50,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-24 03:56:50,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-24 03:56:50,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.02 03:56:49" (1/3) ... [2021-02-24 03:56:50,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e6875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:50, skipping insertion in model container [2021-02-24 03:56:50,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.02 03:56:49" (2/3) ... [2021-02-24 03:56:50,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f4e6875 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.02 03:56:50, skipping insertion in model container [2021-02-24 03:56:50,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.02 03:56:50" (3/3) ... [2021-02-24 03:56:50,330 INFO L111 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2021-02-24 03:56:50,339 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-24 03:56:50,345 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-24 03:56:50,369 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-24 03:56:50,408 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-24 03:56:50,409 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-24 03:56:50,409 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-24 03:56:50,409 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-24 03:56:50,409 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-24 03:56:50,409 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-24 03:56:50,410 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-24 03:56:50,410 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-24 03:56:50,433 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states. [2021-02-24 03:56:50,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-02-24 03:56:50,450 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:50,451 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] [2021-02-24 03:56:50,452 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:50,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:50,465 INFO L82 PathProgramCache]: Analyzing trace with hash 1808746938, now seen corresponding path program 1 times [2021-02-24 03:56:50,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:50,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [550276357] [2021-02-24 03:56:50,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:50,590 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:50,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:50,889 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:50,891 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:50,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:50,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 03:56:50,953 WARN L141 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-02-24 03:56:50,955 WARN L147 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size 12 [2021-02-24 03:56:50,982 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:50,986 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:51,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:51,056 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:51,057 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:51,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-24 03:56:51,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:51,082 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:51,083 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:51,093 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:51,094 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:51,110 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:51,111 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:51,128 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:51,129 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:51,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:56:51,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [550276357] [2021-02-24 03:56:51,179 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:51,179 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-02-24 03:56:51,180 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772395593] [2021-02-24 03:56:51,185 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states [2021-02-24 03:56:51,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:51,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-02-24 03:56:51,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-02-24 03:56:51,205 INFO L87 Difference]: Start difference. First operand 51 states. Second operand 9 states. [2021-02-24 03:56:51,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:51,897 INFO L93 Difference]: Finished difference Result 65 states and 74 transitions. [2021-02-24 03:56:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-24 03:56:51,899 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2021-02-24 03:56:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:51,910 INFO L225 Difference]: With dead ends: 65 [2021-02-24 03:56:51,911 INFO L226 Difference]: Without dead ends: 45 [2021-02-24 03:56:51,915 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 [2021-02-24 03:56:51,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2021-02-24 03:56:51,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2021-02-24 03:56:51,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-24 03:56:51,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2021-02-24 03:56:51,978 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 32 [2021-02-24 03:56:51,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:51,979 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2021-02-24 03:56:51,979 INFO L481 AbstractCegarLoop]: Interpolant automaton has 9 states. [2021-02-24 03:56:51,979 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2021-02-24 03:56:51,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-02-24 03:56:51,982 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:51,982 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] [2021-02-24 03:56:51,983 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-24 03:56:51,983 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:51,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:51,984 INFO L82 PathProgramCache]: Analyzing trace with hash -1330986061, now seen corresponding path program 1 times [2021-02-24 03:56:51,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:51,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797915840] [2021-02-24 03:56:51,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:51,988 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:52,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:52,026 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,028 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,031 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,032 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:52,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:52,104 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,105 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-24 03:56:52,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:52,121 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,122 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,123 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,124 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-24 03:56:52,131 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,132 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 8 [2021-02-24 03:56:52,143 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,144 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-24 03:56:52,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1797915840] [2021-02-24 03:56:52,148 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:52,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-24 03:56:52,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599421596] [2021-02-24 03:56:52,150 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-24 03:56:52,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:52,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-24 03:56:52,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-02-24 03:56:52,152 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 5 states. [2021-02-24 03:56:52,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:52,373 INFO L93 Difference]: Finished difference Result 61 states and 69 transitions. [2021-02-24 03:56:52,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-24 03:56:52,374 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2021-02-24 03:56:52,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:52,387 INFO L225 Difference]: With dead ends: 61 [2021-02-24 03:56:52,387 INFO L226 Difference]: Without dead ends: 47 [2021-02-24 03:56:52,390 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:52,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-02-24 03:56:52,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2021-02-24 03:56:52,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2021-02-24 03:56:52,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-02-24 03:56:52,423 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 33 [2021-02-24 03:56:52,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:52,425 INFO L480 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-02-24 03:56:52,426 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-24 03:56:52,426 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-02-24 03:56:52,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-02-24 03:56:52,431 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:52,431 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] [2021-02-24 03:56:52,431 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-24 03:56:52,432 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:52,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:52,433 INFO L82 PathProgramCache]: Analyzing trace with hash 1283201204, now seen corresponding path program 1 times [2021-02-24 03:56:52,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:52,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321227752] [2021-02-24 03:56:52,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:52,437 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:52,490 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,490 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,492 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,493 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 03:56:52,502 WARN L141 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size [2021-02-24 03:56:52,503 WARN L147 QuantifierPusher]: treesize reduction 14, result has 46.2 percent of original size 12 [2021-02-24 03:56:52,512 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,512 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:52,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:52,550 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,550 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:52,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-24 03:56:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:52,614 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,616 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:52,624 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,625 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:52,640 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,641 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-24 03:56:52,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 03:56:52,678 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,680 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-24 03:56:52,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-24 03:56:52,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:52,748 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,750 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:52,753 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,754 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:52,757 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,758 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:52,782 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:52,784 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-24 03:56:52,816 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-02-24 03:56:52,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321227752] [2021-02-24 03:56:52,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:52,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-02-24 03:56:52,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [115855527] [2021-02-24 03:56:52,818 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states [2021-02-24 03:56:52,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:52,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-02-24 03:56:52,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-02-24 03:56:52,820 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 12 states. [2021-02-24 03:56:53,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:53,615 INFO L93 Difference]: Finished difference Result 58 states and 65 transitions. [2021-02-24 03:56:53,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-24 03:56:53,615 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2021-02-24 03:56:53,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:53,618 INFO L225 Difference]: With dead ends: 58 [2021-02-24 03:56:53,618 INFO L226 Difference]: Without dead ends: 52 [2021-02-24 03:56:53,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=395, Unknown=0, NotChecked=0, Total=506 [2021-02-24 03:56:53,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-02-24 03:56:53,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 48. [2021-02-24 03:56:53,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2021-02-24 03:56:53,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2021-02-24 03:56:53,636 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 42 [2021-02-24 03:56:53,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:53,636 INFO L480 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2021-02-24 03:56:53,636 INFO L481 AbstractCegarLoop]: Interpolant automaton has 12 states. [2021-02-24 03:56:53,637 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2021-02-24 03:56:53,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-02-24 03:56:53,638 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:53,639 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] [2021-02-24 03:56:53,639 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-24 03:56:53,639 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:53,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:53,640 INFO L82 PathProgramCache]: Analyzing trace with hash 816185936, now seen corresponding path program 1 times [2021-02-24 03:56:53,640 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:53,640 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1472505991] [2021-02-24 03:56:53,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:53,645 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:53,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:53,698 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,698 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:53,699 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,700 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:53,704 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,704 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:53,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:53,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:53,736 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,736 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:53,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-24 03:56:53,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:53,750 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,751 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:53,751 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,752 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:53,758 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,759 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:56:53,768 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,770 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:56:53,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-24 03:56:53,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:53,785 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:53,785 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:53,789 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-24 03:56:53,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1472505991] [2021-02-24 03:56:53,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:53,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:56:53,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576923291] [2021-02-24 03:56:53,791 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:56:53,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:53,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:56:53,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:53,792 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 7 states. [2021-02-24 03:56:54,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:54,087 INFO L93 Difference]: Finished difference Result 56 states and 61 transitions. [2021-02-24 03:56:54,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:56:54,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2021-02-24 03:56:54,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:54,090 INFO L225 Difference]: With dead ends: 56 [2021-02-24 03:56:54,090 INFO L226 Difference]: Without dead ends: 50 [2021-02-24 03:56:54,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:56:54,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2021-02-24 03:56:54,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2021-02-24 03:56:54,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2021-02-24 03:56:54,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 55 transitions. [2021-02-24 03:56:54,107 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 55 transitions. Word has length 43 [2021-02-24 03:56:54,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:54,107 INFO L480 AbstractCegarLoop]: Abstraction has 50 states and 55 transitions. [2021-02-24 03:56:54,108 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:56:54,108 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 55 transitions. [2021-02-24 03:56:54,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2021-02-24 03:56:54,110 INFO L414 BasicCegarLoop]: Found error trace [2021-02-24 03:56:54,110 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] [2021-02-24 03:56:54,110 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-24 03:56:54,110 INFO L428 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-24 03:56:54,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-24 03:56:54,111 INFO L82 PathProgramCache]: Analyzing trace with hash 2118403698, now seen corresponding path program 1 times [2021-02-24 03:56:54,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-24 03:56:54,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1436196975] [2021-02-24 03:56:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-24 03:56:54,114 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-24 03:56:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:54,164 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,165 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:54,166 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,167 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:54,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-24 03:56:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:54,199 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:54,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-02-24 03:56:54,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:54,238 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,239 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:54,240 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,241 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:54,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,248 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:54,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-02-24 03:56:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:54,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:54,277 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,280 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-24 03:56:54,288 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,289 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-24 03:56:54,297 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,298 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-24 03:56:54,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-02-24 03:56:54,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-24 03:56:54,311 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-24 03:56:54,312 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-24 03:56:54,317 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-02-24 03:56:54,317 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1436196975] [2021-02-24 03:56:54,318 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-24 03:56:54,318 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-24 03:56:54,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664999735] [2021-02-24 03:56:54,319 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-24 03:56:54,319 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-24 03:56:54,319 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-24 03:56:54,320 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-02-24 03:56:54,320 INFO L87 Difference]: Start difference. First operand 50 states and 55 transitions. Second operand 7 states. [2021-02-24 03:56:54,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-24 03:56:54,552 INFO L93 Difference]: Finished difference Result 57 states and 64 transitions. [2021-02-24 03:56:54,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-24 03:56:54,553 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 53 [2021-02-24 03:56:54,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-24 03:56:54,554 INFO L225 Difference]: With dead ends: 57 [2021-02-24 03:56:54,554 INFO L226 Difference]: Without dead ends: 0 [2021-02-24 03:56:54,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-02-24 03:56:54,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-24 03:56:54,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-24 03:56:54,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-24 03:56:54,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-24 03:56:54,556 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 53 [2021-02-24 03:56:54,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-24 03:56:54,557 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-24 03:56:54,557 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-24 03:56:54,557 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-24 03:56:54,557 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-24 03:56:54,557 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-02-24 03:56:54,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-24 03:56:55,236 WARN L202 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 49 DAG size of output: 17 [2021-02-24 03:56:55,698 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-24 03:56:55,698 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-24 03:56:55,698 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-24 03:56:55,698 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-24 03:56:55,698 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-24 03:56:55,699 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 03:56:55,699 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-24 03:56:55,699 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-24 03:56:55,699 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-24 03:56:55,699 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|)) [2021-02-24 03:56:55,699 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-24 03:56:55,699 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-24 03:56:55,700 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-24 03:56:55,700 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-24 03:56:55,700 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-24 03:56:55,700 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-24 03:56:55,700 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-24 03:56:55,700 INFO L192 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: true [2021-02-24 03:56:55,700 INFO L192 CegarLoopUtils]: At program point L35-2(line 35) the Hoare annotation is: true [2021-02-24 03:56:55,701 INFO L192 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: true [2021-02-24 03:56:55,701 INFO L192 CegarLoopUtils]: At program point L29-1(line 29) the Hoare annotation is: true [2021-02-24 03:56:55,701 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 28 47) the Hoare annotation is: true [2021-02-24 03:56:55,701 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 28 47) the Hoare annotation is: true [2021-02-24 03:56:55,701 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))) [2021-02-24 03:56:55,701 INFO L192 CegarLoopUtils]: At program point L36(lines 36 40) the Hoare annotation is: true [2021-02-24 03:56:55,702 INFO L185 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 45) the Hoare annotation is: false [2021-02-24 03:56:55,702 INFO L192 CegarLoopUtils]: At program point L30(lines 30 34) the Hoare annotation is: true [2021-02-24 03:56:55,702 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 28 47) the Hoare annotation is: true [2021-02-24 03:56:55,702 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: false [2021-02-24 03:56:55,702 INFO L185 CegarLoopUtils]: At program point L45-1(line 45) the Hoare annotation is: false [2021-02-24 03:56:55,702 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))) [2021-02-24 03:56:55,703 INFO L185 CegarLoopUtils]: At program point L41(line 41) the Hoare annotation is: (<= 0 main_~n~0) [2021-02-24 03:56:55,703 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|))) [2021-02-24 03:56:55,703 INFO L192 CegarLoopUtils]: At program point L39(line 39) the Hoare annotation is: true [2021-02-24 03:56:55,703 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|))) [2021-02-24 03:56:55,703 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|))) [2021-02-24 03:56:55,704 INFO L192 CegarLoopUtils]: At program point L35(line 35) the Hoare annotation is: true [2021-02-24 03:56:55,704 INFO L192 CegarLoopUtils]: At program point L35-1(line 35) the Hoare annotation is: true [2021-02-24 03:56:55,704 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)) [2021-02-24 03:56:55,704 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))) [2021-02-24 03:56:55,704 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)) [2021-02-24 03:56:55,704 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))))) [2021-02-24 03:56:55,705 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)) [2021-02-24 03:56:55,705 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)) [2021-02-24 03:56:55,705 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)) [2021-02-24 03:56:55,705 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))) [2021-02-24 03:56:55,705 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))) [2021-02-24 03:56:55,706 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))) [2021-02-24 03:56:55,706 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)) [2021-02-24 03:56:55,706 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))) [2021-02-24 03:56:55,706 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)) [2021-02-24 03:56:55,706 INFO L185 CegarLoopUtils]: At program point L15(lines 15 25) the Hoare annotation is: (= |addition_#in~m| addition_~m) [2021-02-24 03:56:55,706 INFO L192 CegarLoopUtils]: At program point additionENTRY(lines 15 25) the Hoare annotation is: true [2021-02-24 03:56:55,707 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))))) [2021-02-24 03:56:55,726 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.02 03:56:55 BoogieIcfgContainer [2021-02-24 03:56:55,726 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-24 03:56:55,728 INFO L168 Benchmark]: Toolchain (without parser) took 6507.70 ms. Allocated memory was 156.2 MB in the beginning and 229.6 MB in the end (delta: 73.4 MB). Free memory was 132.3 MB in the beginning and 103.5 MB in the end (delta: 28.8 MB). Peak memory consumption was 105.9 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:55,728 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 139.8 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-24 03:56:55,729 INFO L168 Benchmark]: CACSL2BoogieTranslator took 259.81 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:55,730 INFO L168 Benchmark]: Boogie Preprocessor took 39.72 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:55,730 INFO L168 Benchmark]: RCFGBuilder took 775.80 ms. Allocated memory is still 156.2 MB. Free memory was 120.4 MB in the beginning and 132.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:55,731 INFO L168 Benchmark]: TraceAbstraction took 5408.72 ms. Allocated memory was 156.2 MB in the beginning and 229.6 MB in the end (delta: 73.4 MB). Free memory was 131.7 MB in the beginning and 103.5 MB in the end (delta: 28.2 MB). Peak memory consumption was 105.8 MB. Max. memory is 8.0 GB. [2021-02-24 03:56:55,734 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 156.2 MB. Free memory is still 139.8 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 259.81 ms. Allocated memory is still 156.2 MB. Free memory was 131.2 MB in the beginning and 121.7 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.72 ms. Allocated memory is still 156.2 MB. Free memory was 121.7 MB in the beginning and 120.4 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 775.80 ms. Allocated memory is still 156.2 MB. Free memory was 120.4 MB in the beginning and 132.2 MB in the end (delta: -11.8 MB). Peak memory consumption was 13.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 5408.72 ms. Allocated memory was 156.2 MB in the beginning and 229.6 MB in the end (delta: 73.4 MB). Free memory was 131.7 MB in the beginning and 103.5 MB in the end (delta: 28.2 MB). Peak memory consumption was 105.8 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: 4.1s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 2.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 193 SDtfs, 294 SDslu, 241 SDs, 0 SdLazy, 636 SolverSat, 77 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 95 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 90 ImplicationChecksByTransitivity, 1.4s 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, 0.3s HoareSimplificationTime, 51 FomulaSimplificationsInter, 1504 FormulaSimplificationTreeSizeReductionInter, 0.7s 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...