/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/ldv-regression/test19.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 13:37:43,329 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 13:37:43,333 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 13:37:43,394 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-23 13:37:43,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 13:37:43,438 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 13:37:43,439 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 13:37:43,442 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 13:37:43,445 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 13:37:43,446 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 13:37:43,453 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 13:37:43,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 13:37:43,460 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 13:37:43,462 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 13:37:43,463 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 13:37:43,464 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 13:37:43,470 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-23 13:37:43,480 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 13:37:43,481 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 13:37:43,482 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 13:37:43,483 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 13:37:43,527 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 13:37:43,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 13:37:43,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-23 13:37:43,532 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-23 13:37:43,532 INFO L138 SettingsManager]: * Use SBE=true [2021-02-23 13:37:43,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 13:37:43,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 13:37:43,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 13:37:43,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 13:37:43,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 13:37:43,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 13:37:43,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 13:37:43,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 13:37:43,535 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 13:37:43,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 13:37:43,535 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 13:37:43,535 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 13:37:43,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 13:37:43,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-23 13:37:43,536 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 13:37:43,536 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 13:37:43,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 13:37:43,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-23 13:37:43,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-23 13:37:43,537 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-23 13:37:43,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-23 13:37:43,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 13:37:43,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-23 13:37:43,538 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 13:37:43,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 13:37:43,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 13:37:43,925 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 13:37:43,927 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 13:37:43,927 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 13:37:43,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test19.c [2021-02-23 13:37:44,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406ee815a/1a25bab9e1d94ae99af6692c2136d632/FLAG0de3e3a89 [2021-02-23 13:37:44,650 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 13:37:44,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test19.c [2021-02-23 13:37:44,658 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406ee815a/1a25bab9e1d94ae99af6692c2136d632/FLAG0de3e3a89 [2021-02-23 13:37:45,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/406ee815a/1a25bab9e1d94ae99af6692c2136d632 [2021-02-23 13:37:45,034 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 13:37:45,047 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 13:37:45,049 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:45,049 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 13:37:45,053 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 13:37:45,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,055 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f97f224 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45, skipping insertion in model container [2021-02-23 13:37:45,056 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,064 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 13:37:45,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 13:37:45,231 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test19.c[647,660] [2021-02-23 13:37:45,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:45,248 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 13:37:45,267 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test19.c[647,660] [2021-02-23 13:37:45,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 13:37:45,287 INFO L208 MainTranslator]: Completed translation [2021-02-23 13:37:45,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45 WrapperNode [2021-02-23 13:37:45,288 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 13:37:45,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 13:37:45,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 13:37:45,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 13:37:45,308 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,327 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (1/1) ... [2021-02-23 13:37:45,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 13:37:45,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 13:37:45,335 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 13:37:45,335 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 13:37:45,336 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (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 13:37:45,452 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 13:37:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 13:37:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 13:37:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2021-02-23 13:37:45,453 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 13:37:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 13:37:45,453 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 13:37:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 13:37:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 13:37:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 13:37:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2021-02-23 13:37:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 13:37:45,454 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 13:37:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 13:37:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 13:37:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 13:37:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-23 13:37:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 13:37:45,455 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 13:37:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 13:37:45,456 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 13:37:45,940 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 13:37:45,941 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-23 13:37:45,942 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:45 BoogieIcfgContainer [2021-02-23 13:37:45,943 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 13:37:45,948 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 13:37:45,948 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 13:37:45,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 13:37:45,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 01:37:45" (1/3) ... [2021-02-23 13:37:45,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bac1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:45, skipping insertion in model container [2021-02-23 13:37:45,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 01:37:45" (2/3) ... [2021-02-23 13:37:45,963 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75bac1dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 01:37:45, skipping insertion in model container [2021-02-23 13:37:45,963 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 01:37:45" (3/3) ... [2021-02-23 13:37:45,968 INFO L111 eAbstractionObserver]: Analyzing ICFG test19.c [2021-02-23 13:37:46,033 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-23 13:37:46,047 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 13:37:46,110 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 13:37:46,147 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 13:37:46,147 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 13:37:46,147 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-23 13:37:46,147 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 13:37:46,147 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 13:37:46,148 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 13:37:46,148 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 13:37:46,148 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 13:37:46,166 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-02-23 13:37:46,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-02-23 13:37:46,172 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 13:37:46,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-23 13:37:46,174 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 13:37:46,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 13:37:46,181 INFO L82 PathProgramCache]: Analyzing trace with hash -734615748, now seen corresponding path program 1 times [2021-02-23 13:37:46,193 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-23 13:37:46,194 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257931379] [2021-02-23 13:37:46,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 13:37:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:46,507 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,511 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:46,522 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,526 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 45 [2021-02-23 13:37:46,611 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,612 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 11 [2021-02-23 13:37:46,625 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,626 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 13:37:46,641 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,642 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:46,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 13:37:46,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:46,731 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,732 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 13:37:46,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-23 13:37:46,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 13:37:46,807 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 13:37:46,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 39 [2021-02-23 13:37:46,849 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 13:37:46,850 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257931379] [2021-02-23 13:37:46,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 13:37:46,852 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 13:37:46,853 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264246378] [2021-02-23 13:37:46,861 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 13:37:46,862 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-23 13:37:46,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 13:37:46,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-02-23 13:37:46,882 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 8 states. [2021-02-23 13:37:47,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 13:37:47,298 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2021-02-23 13:37:47,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-23 13:37:47,300 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2021-02-23 13:37:47,301 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 13:37:47,307 INFO L225 Difference]: With dead ends: 22 [2021-02-23 13:37:47,308 INFO L226 Difference]: Without dead ends: 0 [2021-02-23 13:37:47,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-02-23 13:37:47,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-23 13:37:47,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-23 13:37:47,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-23 13:37:47,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-23 13:37:47,347 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-02-23 13:37:47,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 13:37:47,347 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-23 13:37:47,347 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 13:37:47,347 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-23 13:37:47,348 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-23 13:37:47,348 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 13:37:47,350 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-23 13:37:47,536 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-23 13:37:47,536 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-23 13:37:47,536 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-23 13:37:47,537 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,537 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-23 13:37:47,537 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,537 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,538 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-23 13:37:47,538 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-23 13:37:47,538 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-23 13:37:47,538 INFO L185 CegarLoopUtils]: At program point L17(line 17) the Hoare annotation is: (let ((.cse1 (select (select |#memory_$Pointer$.base| |main_~#pb~1.base|) |main_~#pb~1.offset|)) (.cse0 (select (select |#memory_$Pointer$.base| |main_~#pa~1.base|) |main_~#pa~1.offset|))) (and (= (select (select |#memory_$Pointer$.offset| |main_~#pb~1.base|) |main_~#pb~1.offset|) |main_~#b~0.offset|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= .cse0 |main_~#a~0.base|) (= .cse1 |main_~#b~0.base|) (= |#memory_int| |old(#memory_int)|) (= (select (select |#memory_$Pointer$.offset| |main_~#pa~1.base|) |main_~#pa~1.offset|) |main_~#a~0.offset|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (not (= .cse1 .cse0)))) [2021-02-23 13:37:47,539 INFO L189 CegarLoopUtils]: For program point L17-1(line 17) no Hoare annotation was computed. [2021-02-23 13:37:47,539 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 24) no Hoare annotation was computed. [2021-02-23 13:37:47,539 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 13 26) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2021-02-23 13:37:47,539 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 13 26) no Hoare annotation was computed. [2021-02-23 13:37:47,540 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 13 26) no Hoare annotation was computed. [2021-02-23 13:37:47,540 INFO L185 CegarLoopUtils]: At program point L19(lines 13 26) the Hoare annotation is: false [2021-02-23 13:37:47,540 INFO L189 CegarLoopUtils]: For program point L18(lines 18 20) no Hoare annotation was computed. [2021-02-23 13:37:47,540 INFO L189 CegarLoopUtils]: For program point assignEXIT(lines 7 11) no Hoare annotation was computed. [2021-02-23 13:37:47,540 INFO L185 CegarLoopUtils]: At program point assignENTRY(lines 7 11) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) [2021-02-23 13:37:47,541 INFO L189 CegarLoopUtils]: For program point assignFINAL(lines 7 11) no Hoare annotation was computed. [2021-02-23 13:37:47,553 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 01:37:47 BoogieIcfgContainer [2021-02-23 13:37:47,553 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 13:37:47,555 INFO L168 Benchmark]: Toolchain (without parser) took 2518.62 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 126.9 MB in the beginning and 197.5 MB in the end (delta: -70.6 MB). Peak memory consumption was 79.5 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,556 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 13:37:47,557 INFO L168 Benchmark]: CACSL2BoogieTranslator took 239.40 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,558 INFO L168 Benchmark]: Boogie Preprocessor took 44.60 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,559 INFO L168 Benchmark]: RCFGBuilder took 607.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 99.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,560 INFO L168 Benchmark]: TraceAbstraction took 1605.50 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 98.6 MB in the beginning and 197.5 MB in the end (delta: -98.9 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 GB. [2021-02-23 13:37:47,563 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 151.0 MB. Free memory is still 122.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 239.40 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 116.3 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 44.60 ms. Allocated memory is still 151.0 MB. Free memory was 116.3 MB in the beginning and 114.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 607.55 ms. Allocated memory is still 151.0 MB. Free memory was 114.5 MB in the beginning and 99.0 MB in the end (delta: 15.5 MB). Peak memory consumption was 15.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1605.50 ms. Allocated memory was 151.0 MB in the beginning and 220.2 MB in the end (delta: 69.2 MB). Free memory was 98.6 MB in the beginning and 197.5 MB in the end (delta: -98.9 MB). Peak memory consumption was 51.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 24]: 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: 13]: Loop Invariant Derived loop invariant: 0 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 9 SDtfs, 3 SDslu, 26 SDs, 0 SdLazy, 53 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=18occurred 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, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 110 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 63 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 2148 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...