/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:06:45,754 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:06:45,758 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:06:45,814 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:06:45,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:06:45,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:06:45,822 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:06:45,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:06:45,833 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:06:45,839 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:06:45,840 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:06:45,842 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:06:45,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:06:45,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:06:45,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:06:45,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:06:45,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:06:45,865 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:06:45,873 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:06:45,882 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:06:45,883 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:06:45,886 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:06:45,887 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:06:45,890 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:06:45,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-21 16:06:45,912 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:06:45,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:06:45,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:06:45,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2021-02-21 16:06:45,971 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:06:45,971 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:06:45,976 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:06:45,976 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:06:45,977 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:06:45,977 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:06:45,977 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:06:45,977 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:06:45,978 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:06:45,978 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:06:45,979 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:06:45,979 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:06:45,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:06:45,980 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:06:45,980 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:06:45,980 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:06:45,980 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:06:45,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:06:45,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:06:45,981 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:06:45,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:06:45,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:06:45,982 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:06:45,982 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:06:45,982 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:06:45,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:06:45,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:06:45,983 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:06:45,983 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:06:46,369 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:06:46,401 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:06:46,404 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:06:46,406 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:06:46,407 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:06:46,407 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c [2021-02-21 16:06:46,500 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdb52fb9/3aee931fd1d04a71acc70fa69b90666a/FLAG3058ff4c1 [2021-02-21 16:06:47,069 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:06:47,070 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/recursive-simple/sum_non_eq-2.c [2021-02-21 16:06:47,077 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdb52fb9/3aee931fd1d04a71acc70fa69b90666a/FLAG3058ff4c1 [2021-02-21 16:06:47,492 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1bdb52fb9/3aee931fd1d04a71acc70fa69b90666a [2021-02-21 16:06:47,495 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:06:47,512 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:06:47,516 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:06:47,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:06:47,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:06:47,524 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,526 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2431705f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47, skipping insertion in model container [2021-02-21 16:06:47,527 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,536 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:06:47,553 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:06:47,764 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-simple/sum_non_eq-2.c[628,641] [2021-02-21 16:06:47,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:06:47,779 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:06:47,795 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-simple/sum_non_eq-2.c[628,641] [2021-02-21 16:06:47,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:06:47,812 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:06:47,812 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47 WrapperNode [2021-02-21 16:06:47,813 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:06:47,814 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:06:47,814 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:06:47,814 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:06:47,827 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,827 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,834 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,843 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (1/1) ... [2021-02-21 16:06:47,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:06:47,849 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:06:47,849 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:06:47,849 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:06:47,850 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (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 16:06:47,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:06:47,965 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:06:47,966 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:06:47,966 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2021-02-21 16:06:47,966 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:06:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2021-02-21 16:06:47,966 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:06:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:06:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:06:47,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:06:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2021-02-21 16:06:47,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:06:47,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:06:47,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:06:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:06:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:06:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:06:47,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:06:48,294 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:06:48,294 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-21 16:06:48,296 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:06:48 BoogieIcfgContainer [2021-02-21 16:06:48,296 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:06:48,298 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:06:48,298 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:06:48,301 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:06:48,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:06:47" (1/3) ... [2021-02-21 16:06:48,302 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8e241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:06:48, skipping insertion in model container [2021-02-21 16:06:48,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:06:47" (2/3) ... [2021-02-21 16:06:48,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23c8e241 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:06:48, skipping insertion in model container [2021-02-21 16:06:48,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:06:48" (3/3) ... [2021-02-21 16:06:48,305 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_non_eq-2.c [2021-02-21 16:06:48,312 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:06:48,316 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:06:48,335 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:06:48,389 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:06:48,389 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:06:48,389 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:06:48,389 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:06:48,390 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:06:48,390 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:06:48,390 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:06:48,390 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:06:48,407 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2021-02-21 16:06:48,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-21 16:06:48,428 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:06:48,429 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:06:48,429 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:06:48,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:06:48,436 INFO L82 PathProgramCache]: Analyzing trace with hash -919656096, now seen corresponding path program 1 times [2021-02-21 16:06:48,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:06:48,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440533868] [2021-02-21 16:06:48,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:06:48,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:48,718 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:48,720 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:48,728 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:48,730 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 20 [2021-02-21 16:06:48,772 WARN L141 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size [2021-02-21 16:06:48,779 WARN L147 QuantifierPusher]: treesize reduction 24, result has 81.5 percent of original size 106 [2021-02-21 16:06:48,845 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:48,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:48,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:06:48,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:48,905 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:48,906 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:48,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 16:06:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:48,966 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:48,968 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:48,995 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:48,998 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:06:49,039 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 16:06:49,040 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440533868] [2021-02-21 16:06:49,041 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:06:49,041 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-21 16:06:49,042 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479081296] [2021-02-21 16:06:49,046 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-21 16:06:49,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:06:49,061 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-21 16:06:49,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-21 16:06:49,064 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 7 states. [2021-02-21 16:06:49,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:06:49,417 INFO L93 Difference]: Finished difference Result 33 states and 36 transitions. [2021-02-21 16:06:49,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-21 16:06:49,419 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 14 [2021-02-21 16:06:49,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:06:49,428 INFO L225 Difference]: With dead ends: 33 [2021-02-21 16:06:49,429 INFO L226 Difference]: Without dead ends: 19 [2021-02-21 16:06:49,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-02-21 16:06:49,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-02-21 16:06:49,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-02-21 16:06:49,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2021-02-21 16:06:49,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-02-21 16:06:49,481 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-02-21 16:06:49,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:06:49,481 INFO L480 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-02-21 16:06:49,482 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-21 16:06:49,482 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-02-21 16:06:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-02-21 16:06:49,485 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:06:49,485 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:06:49,486 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:06:49,486 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:06:49,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:06:49,489 INFO L82 PathProgramCache]: Analyzing trace with hash 334776906, now seen corresponding path program 1 times [2021-02-21 16:06:49,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:06:49,490 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [473647258] [2021-02-21 16:06:49,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:06:49,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:49,659 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,660 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:49,662 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,663 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:06:49,684 WARN L141 QuantifierPusher]: treesize reduction 38, result has 67.2 percent of original size [2021-02-21 16:06:49,688 WARN L147 QuantifierPusher]: treesize reduction 38, result has 67.2 percent of original size 78 [2021-02-21 16:06:49,725 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,725 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:49,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:06:49,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:49,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,794 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:49,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-21 16:06:49,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:49,833 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,834 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:49,848 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,848 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:49,864 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:49,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-02-21 16:06:49,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:49,906 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,907 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:49,908 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:49,909 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:06:49,937 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 16:06:49,937 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [473647258] [2021-02-21 16:06:49,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2062751897] [2021-02-21 16:06:49,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-02-21 16:06:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:06:50,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 29 conjunts are in the unsatisfiable core [2021-02-21 16:06:50,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-02-21 16:06:50,135 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,136 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,140 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,142 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,144 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,147 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,149 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,150 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,153 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,154 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,155 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,155 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,157 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,157 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,158 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,160 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,160 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,162 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,163 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,164 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,165 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,166 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,169 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,170 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,171 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,171 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,172 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,173 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,174 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,174 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,175 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,175 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,176 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,177 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,177 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,178 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,179 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,179 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,180 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,180 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,181 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,181 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,182 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,182 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,183 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,183 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,184 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,184 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,185 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,185 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,186 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,187 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,188 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,189 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,189 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,190 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,192 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,193 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,194 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,195 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:06:50,196 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,197 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:06:50,198 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,199 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:06:50,200 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,200 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-21 16:06:50,224 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,248 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:06:50,249 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,250 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:06:50,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-21 16:06:50,253 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,255 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:06:50,256 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,257 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:06:50,258 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 16:06:50,260 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-21 16:06:50,271 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,271 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,272 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,273 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,273 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,274 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,275 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,276 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,276 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,277 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-21 16:06:50,278 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,279 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-02-21 16:06:50,280 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,282 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-21 16:06:50,283 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,284 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:06:50,285 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,285 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 9 [2021-02-21 16:06:50,301 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,301 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:06:50,302 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,303 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:06:50,304 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,304 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:06:50,305 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,306 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-21 16:06:50,308 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,310 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 37 [2021-02-21 16:06:50,312 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-02-21 16:06:50,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 16:06:50,317 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,318 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-21 16:06:50,350 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,352 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 16:06:50,353 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,354 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,357 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,358 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,359 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,360 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,387 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,388 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,390 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,393 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,394 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,397 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,397 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,400 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,403 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 16:06:50,405 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,406 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,407 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,409 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,441 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,443 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-21 16:06:50,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,444 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,445 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,447 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,448 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,449 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-21 16:06:50,479 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,480 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 27 [2021-02-21 16:06:50,481 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,519 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-21 16:06:50,521 WARN L141 QuantifierPusher]: treesize reduction 14, result has 79.4 percent of original size [2021-02-21 16:06:50,522 WARN L147 QuantifierPusher]: treesize reduction 14, result has 79.4 percent of original size 54 [2021-02-21 16:06:50,524 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 28 [2021-02-21 16:06:50,526 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 55 [2021-02-21 16:06:50,540 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:06:50,540 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:06:50,543 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-02-21 16:06:50,544 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-02-21 16:06:50,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2021-02-21 16:06:50,545 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730858501] [2021-02-21 16:06:50,545 INFO L460 AbstractCegarLoop]: Interpolant automaton has 14 states [2021-02-21 16:06:50,546 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:06:50,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-02-21 16:06:50,547 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-02-21 16:06:50,547 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand 14 states. [2021-02-21 16:06:51,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:06:51,302 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2021-02-21 16:06:51,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-02-21 16:06:51,303 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 20 [2021-02-21 16:06:51,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:06:51,303 INFO L225 Difference]: With dead ends: 24 [2021-02-21 16:06:51,303 INFO L226 Difference]: Without dead ends: 0 [2021-02-21 16:06:51,305 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=104, Invalid=496, Unknown=0, NotChecked=0, Total=600 [2021-02-21 16:06:51,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-21 16:06:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-21 16:06:51,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-21 16:06:51,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-21 16:06:51,306 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-02-21 16:06:51,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:06:51,306 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-21 16:06:51,306 INFO L481 AbstractCegarLoop]: Interpolant automaton has 14 states. [2021-02-21 16:06:51,306 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-21 16:06:51,306 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-21 16:06:51,515 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-02-21 16:06:51,519 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-21 16:06:51,633 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-02-21 16:06:51,634 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-02-21 16:06:51,634 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-02-21 16:06:51,634 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:06:51,635 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 16:06:51,635 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:06:51,635 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-21 16:06:51,635 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-21 16:06:51,635 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-21 16:06:51,635 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-21 16:06:51,635 INFO L189 CegarLoopUtils]: For program point sumEXIT(lines 6 12) no Hoare annotation was computed. [2021-02-21 16:06:51,636 INFO L185 CegarLoopUtils]: At program point L10(line 10) the Hoare annotation is: (and (= sum_~n |sum_#in~n|) (= sum_~m |sum_#in~m|) (not (= (mod sum_~n 4294967296) 0))) [2021-02-21 16:06:51,636 INFO L189 CegarLoopUtils]: For program point L10-1(line 10) no Hoare annotation was computed. [2021-02-21 16:06:51,636 INFO L189 CegarLoopUtils]: For program point L7(lines 7 11) no Hoare annotation was computed. [2021-02-21 16:06:51,636 INFO L189 CegarLoopUtils]: For program point sumFINAL(lines 6 12) no Hoare annotation was computed. [2021-02-21 16:06:51,636 INFO L192 CegarLoopUtils]: At program point sumENTRY(lines 6 12) the Hoare annotation is: true [2021-02-21 16:06:51,636 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-21 16:06:51,636 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 14 21) the Hoare annotation is: true [2021-02-21 16:06:51,636 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 14 21) no Hoare annotation was computed. [2021-02-21 16:06:51,637 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-21 16:06:51,637 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-21 16:06:51,637 INFO L192 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: true [2021-02-21 16:06:51,637 INFO L189 CegarLoopUtils]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-02-21 16:06:51,637 INFO L189 CegarLoopUtils]: For program point L18-2(lines 14 21) no Hoare annotation was computed. [2021-02-21 16:06:51,642 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:06:51 BoogieIcfgContainer [2021-02-21 16:06:51,643 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:06:51,644 INFO L168 Benchmark]: Toolchain (without parser) took 4145.44 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 125.7 MB in the beginning and 82.6 MB in the end (delta: 43.1 MB). Peak memory consumption was 74.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:06:51,649 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:06:51,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 296.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 115.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:06:51,652 INFO L168 Benchmark]: Boogie Preprocessor took 34.01 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:06:51,659 INFO L168 Benchmark]: RCFGBuilder took 447.46 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 101.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-21 16:06:51,660 INFO L168 Benchmark]: TraceAbstraction took 3344.93 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 82.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 49.2 MB. Max. memory is 8.0 GB. [2021-02-21 16:06:51,662 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 296.67 ms. Allocated memory is still 151.0 MB. Free memory was 124.5 MB in the beginning and 115.4 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 34.01 ms. Allocated memory is still 151.0 MB. Free memory was 115.4 MB in the beginning and 114.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 447.46 ms. Allocated memory is still 151.0 MB. Free memory was 114.0 MB in the beginning and 101.2 MB in the end (delta: 12.8 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3344.93 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 100.8 MB in the beginning and 82.6 MB in the end (delta: 18.1 MB). Peak memory consumption was 49.2 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 25 SDtfs, 34 SDslu, 62 SDs, 0 SdLazy, 161 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 56 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=21occurred 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: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 49 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 120 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 7921 SizeOfPredicates, 7 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 3 InterpolantComputations, 1 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, 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...