/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/loop-invgen/nest-if3.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:54:12,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:54:12,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:54:13,035 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 13:54:13,036 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 13:54:13,039 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 13:54:13,043 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 13:54:13,050 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 13:54:13,051 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 13:54:13,055 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 13:54:13,056 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 13:54:13,057 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 13:54:13,057 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:54:13,058 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:54:13,060 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:54:13,061 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:54:13,062 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:54:13,070 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:54:13,072 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:54:13,074 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:54:13,076 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:54:13,077 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:54:13,078 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:54:13,079 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:54:13,082 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 13:54:13,082 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 13:54:13,083 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 13:54:13,084 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 13:54:13,084 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 13:54:13,085 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 13:54:13,085 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 13:54:13,086 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 13:54:13,087 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 13:54:13,088 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 13:54:13,089 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 13:54:13,089 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 13:54:13,090 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 13:54:13,090 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 13:54:13,091 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:54:13,092 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:54:13,092 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:54:13,095 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 [2021-02-23 13:54:13,121 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:54:13,121 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:54:13,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:54:13,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:54:13,123 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:54:13,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:54:13,123 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:54:13,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:54:13,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:54:13,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:54:13,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:54:13,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:54:13,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:54:13,125 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:54:13,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:54:13,125 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:54:13,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:54:13,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:54:13,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:54:13,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:54:13,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:54:13,126 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:54:13,127 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:54:13,127 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:54:13,127 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:54:13,127 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:54:13,127 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:54:13,127 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:54:13,128 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:54:13,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:54:13,522 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:54:13,526 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:54:13,527 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:54:13,532 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:54:13,533 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-23 13:54:13,630 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df67db85f/21e81fe9d7694e39973aa3934773725e/FLAGd8180e0e2 [2021-02-23 13:54:14,262 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:54:14,262 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i [2021-02-23 13:54:14,272 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df67db85f/21e81fe9d7694e39973aa3934773725e/FLAGd8180e0e2 [2021-02-23 13:54:14,657 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/df67db85f/21e81fe9d7694e39973aa3934773725e [2021-02-23 13:54:14,660 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:54:14,675 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:54:14,680 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:54:14,680 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:54:14,684 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:54:14,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:54:14" (1/1) ... [2021-02-23 13:54:14,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157877f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:14, skipping insertion in model container [2021-02-23 13:54:14,688 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:54:14" (1/1) ... [2021-02-23 13:54:14,697 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:54:14,721 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:54:14,938 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i[893,906] [2021-02-23 13:54:14,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:54:14,969 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:54:14,985 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-invgen/nest-if3.i[893,906] [2021-02-23 13:54:14,996 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:54:15,010 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:54:15,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15 WrapperNode [2021-02-23 13:54:15,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:54:15,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:54:15,012 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:54:15,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:54:15,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (1/1) ... [2021-02-23 13:54:15,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (1/1) ... [2021-02-23 13:54:15,033 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (1/1) ... [2021-02-23 13:54:15,033 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (1/1) ... [2021-02-23 13:54:15,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (1/1) ... [2021-02-23 13:54:15,045 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (1/1) ... [2021-02-23 13:54:15,046 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (1/1) ... [2021-02-23 13:54:15,051 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:54:15,052 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:54:15,052 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:54:15,057 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:54:15,058 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (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 [2021-02-23 13:54:15,149 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:54:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:54:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:54:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-02-23 13:54:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-23 13:54:15,150 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:54:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:54:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:54:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 13:54:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 13:54:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:54:15,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:54:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-02-23 13:54:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-23 13:54:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:54:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:54:15,152 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:54:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:54:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:54:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:54:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:54:15,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:54:15,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:54:15,527 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 13:54:15,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:54:15 BoogieIcfgContainer [2021-02-23 13:54:15,529 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:54:15,531 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:54:15,531 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:54:15,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:54:15,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:54:14" (1/3) ... [2021-02-23 13:54:15,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e214a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:54:15, skipping insertion in model container [2021-02-23 13:54:15,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:54:15" (2/3) ... [2021-02-23 13:54:15,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e214a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:54:15, skipping insertion in model container [2021-02-23 13:54:15,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:54:15" (3/3) ... [2021-02-23 13:54:15,539 INFO L111 eAbstractionObserver]: Analyzing ICFG nest-if3.i [2021-02-23 13:54:15,547 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:54:15,552 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:54:15,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:54:15,615 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:54:15,616 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:54:15,616 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:54:15,616 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:54:15,616 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:54:15,616 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:54:15,616 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:54:15,616 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:54:15,632 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2021-02-23 13:54:15,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-02-23 13:54:15,639 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:54:15,639 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:54:15,640 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:54:15,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:54:15,646 INFO L82 PathProgramCache]: Analyzing trace with hash -172997448, now seen corresponding path program 1 times [2021-02-23 13:54:15,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:54:15,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [58589182] [2021-02-23 13:54:15,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:54:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:54:15,869 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,870 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:15,872 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,873 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:54:15,894 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,896 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:54:15,909 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,910 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:54:15,923 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,924 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-23 13:54:15,939 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:15,940 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:15,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:54:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:54:16,012 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:54:16,013 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:54:16,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 13:54:16,017 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [58589182] [2021-02-23 13:54:16,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:54:16,018 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-23 13:54:16,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806181916] [2021-02-23 13:54:16,024 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-02-23 13:54:16,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:54:16,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-02-23 13:54:16,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-02-23 13:54:16,041 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 7 states. [2021-02-23 13:54:16,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:54:16,288 INFO L93 Difference]: Finished difference Result 46 states and 62 transitions. [2021-02-23 13:54:16,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-02-23 13:54:16,290 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 15 [2021-02-23 13:54:16,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:54:16,296 INFO L225 Difference]: With dead ends: 46 [2021-02-23 13:54:16,297 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:54:16,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-02-23 13:54:16,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:54:16,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:54:16,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:54:16,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:54:16,328 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2021-02-23 13:54:16,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:54:16,328 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:54:16,328 INFO L481 AbstractCegarLoop]: Interpolant automaton has 7 states. [2021-02-23 13:54:16,328 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:54:16,329 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:54:16,329 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:54:16,331 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:54:16,492 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-23 13:54:16,493 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-23 13:54:16,493 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-23 13:54:16,493 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:54:16,494 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string0.offset| |old(#t~string0.offset)|) (= |old(#length)| |#length|) (= |#t~string1.base| |old(#t~string1.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string0.base| |old(#t~string0.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|) (= |#t~string1.offset| |old(#t~string1.offset)|)) [2021-02-23 13:54:16,494 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:54:16,494 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:54:16,495 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:54:16,496 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:54:16,496 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:54:16,496 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-23 13:54:16,496 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:54:16,496 INFO L189 CegarLoopUtils]: For program point L15-2(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:54:16,497 INFO L189 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 14 16) no Hoare annotation was computed. [2021-02-23 13:54:16,497 INFO L185 CegarLoopUtils]: At program point L33(line 33) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-23 13:54:16,497 INFO L189 CegarLoopUtils]: For program point L33-1(lines 32 34) no Hoare annotation was computed. [2021-02-23 13:54:16,497 INFO L189 CegarLoopUtils]: For program point L29(line 29) no Hoare annotation was computed. [2021-02-23 13:54:16,497 INFO L189 CegarLoopUtils]: For program point L31-2(lines 31 37) no Hoare annotation was computed. [2021-02-23 13:54:16,497 INFO L185 CegarLoopUtils]: At program point L31-3(lines 31 37) the Hoare annotation is: (<= 1 main_~l~0) [2021-02-23 13:54:16,498 INFO L189 CegarLoopUtils]: For program point L31-4(lines 24 38) no Hoare annotation was computed. [2021-02-23 13:54:16,498 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 24 38) no Hoare annotation was computed. [2021-02-23 13:54:16,499 INFO L189 CegarLoopUtils]: For program point L30(line 30) no Hoare annotation was computed. [2021-02-23 13:54:16,499 INFO L185 CegarLoopUtils]: At program point L32-2(lines 32 34) the Hoare annotation is: (and (<= 1 main_~l~0) (<= 1 main_~i~0)) [2021-02-23 13:54:16,499 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 24 38) the Hoare annotation is: true [2021-02-23 13:54:16,499 INFO L189 CegarLoopUtils]: For program point L32-3(lines 32 34) no Hoare annotation was computed. [2021-02-23 13:54:16,499 INFO L189 CegarLoopUtils]: For program point L28(line 28) no Hoare annotation was computed. [2021-02-23 13:54:16,500 INFO L189 CegarLoopUtils]: For program point L35(lines 35 36) no Hoare annotation was computed. [2021-02-23 13:54:16,500 INFO L189 CegarLoopUtils]: For program point L18-2(lines 17 22) no Hoare annotation was computed. [2021-02-23 13:54:16,502 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 17 22) the Hoare annotation is: true [2021-02-23 13:54:16,502 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 17 22) no Hoare annotation was computed. [2021-02-23 13:54:16,502 INFO L189 CegarLoopUtils]: For program point L19(line 19) no Hoare annotation was computed. [2021-02-23 13:54:16,502 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 19) no Hoare annotation was computed. [2021-02-23 13:54:16,502 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-23 13:54:16,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:54:16 BoogieIcfgContainer [2021-02-23 13:54:16,519 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:54:16,521 INFO L168 Benchmark]: Toolchain (without parser) took 1857.59 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 60.1 MB in the end (delta: 65.5 MB). Peak memory consumption was 65.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:16,522 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:54:16,523 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 115.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:16,524 INFO L168 Benchmark]: Boogie Preprocessor took 39.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:16,525 INFO L168 Benchmark]: RCFGBuilder took 477.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 98.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:16,526 INFO L168 Benchmark]: TraceAbstraction took 988.77 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 60.1 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:54:16,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 151.0 MB. Free memory is still 123.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 331.25 ms. Allocated memory is still 151.0 MB. Free memory was 124.6 MB in the beginning and 115.0 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 39.40 ms. Allocated memory is still 151.0 MB. Free memory was 115.0 MB in the beginning and 113.5 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 477.27 ms. Allocated memory is still 151.0 MB. Free memory was 113.3 MB in the beginning and 98.2 MB in the end (delta: 15.1 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 988.77 ms. Allocated memory is still 151.0 MB. Free memory was 97.8 MB in the beginning and 60.1 MB in the end (delta: 37.7 MB). Peak memory consumption was 37.1 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 - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: 1 <= l - InvariantResult [Line: 32]: Loop Invariant Derived loop invariant: 1 <= l && 1 <= i - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 39 SDslu, 38 SDs, 0 SdLazy, 83 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 46 HoareAnnotationTreeSize, 9 FomulaSimplifications, 32 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 129 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 15 NumberOfCodeBlocks, 15 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 14 ConstructedInterpolants, 0 QuantifiedInterpolants, 756 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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...