/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/nested_structure_ptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:43:32,067 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:43:32,071 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:43:32,126 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-19 17:43:32,127 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-19 17:43:32,129 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-19 17:43:32,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-19 17:43:32,142 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-19 17:43:32,146 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-19 17:43:32,152 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-19 17:43:32,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-19 17:43:32,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-19 17:43:32,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:43:32,158 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:43:32,161 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:43:32,163 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:43:32,168 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:43:32,169 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:43:32,178 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:43:32,182 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:43:32,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:43:32,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:43:32,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:43:32,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:43:32,216 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:43:32,232 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:43:32,233 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:43:32,234 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:43:32,240 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 [2021-02-19 17:43:32,292 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:43:32,292 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:43:32,297 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:43:32,298 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:43:32,298 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:43:32,298 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:43:32,299 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:43:32,299 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:43:32,299 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:43:32,299 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:43:32,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:43:32,301 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:43:32,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:43:32,301 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:43:32,301 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:43:32,301 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:43:32,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:43:32,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:43:32,302 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:43:32,302 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:43:32,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:43:32,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:43:32,303 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:43:32,303 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:43:32,304 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:43:32,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:43:32,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:43:32,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:43:32,304 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:43:32,745 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:43:32,773 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:43:32,776 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:43:32,777 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:43:32,778 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:43:32,779 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2021-02-19 17:43:32,870 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34724665/bab5773b728640ff88c60d07ee30cfeb/FLAG661964943 [2021-02-19 17:43:33,603 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:43:33,605 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/nested_structure_ptr-2.i [2021-02-19 17:43:33,613 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34724665/bab5773b728640ff88c60d07ee30cfeb/FLAG661964943 [2021-02-19 17:43:33,878 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f34724665/bab5773b728640ff88c60d07ee30cfeb [2021-02-19 17:43:33,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:43:33,897 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:43:33,898 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:43:33,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:43:33,903 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:43:33,904 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:43:33" (1/1) ... [2021-02-19 17:43:33,905 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff15f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:33, skipping insertion in model container [2021-02-19 17:43:33,905 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:43:33" (1/1) ... [2021-02-19 17:43:33,914 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:43:33,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:43:34,089 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/nested_structure_ptr-2.i[822,835] [2021-02-19 17:43:34,105 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:43:34,117 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:43:34,134 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/nested_structure_ptr-2.i[822,835] [2021-02-19 17:43:34,141 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:43:34,160 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:43:34,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34 WrapperNode [2021-02-19 17:43:34,161 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:43:34,162 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:43:34,162 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:43:34,162 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:43:34,179 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (1/1) ... [2021-02-19 17:43:34,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (1/1) ... [2021-02-19 17:43:34,190 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (1/1) ... [2021-02-19 17:43:34,190 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (1/1) ... [2021-02-19 17:43:34,201 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (1/1) ... [2021-02-19 17:43:34,203 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (1/1) ... [2021-02-19 17:43:34,204 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (1/1) ... [2021-02-19 17:43:34,207 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:43:34,208 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:43:34,208 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:43:34,208 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:43:34,210 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (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 [2021-02-19 17:43:34,329 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:43:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:43:34,330 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:43:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-19 17:43:34,331 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:43:34,331 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:43:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:43:34,332 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-19 17:43:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-19 17:43:34,333 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:43:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:43:34,334 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-19 17:43:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:43:34,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:43:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-02-19 17:43:34,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-19 17:43:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:43:34,338 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:43:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:43:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:43:34,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:43:34,340 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-19 17:43:34,863 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:43:34,863 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 17:43:34,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:43:34 BoogieIcfgContainer [2021-02-19 17:43:34,869 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:43:34,871 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:43:34,872 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:43:34,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:43:34,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:43:33" (1/3) ... [2021-02-19 17:43:34,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60053cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:43:34, skipping insertion in model container [2021-02-19 17:43:34,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:43:34" (2/3) ... [2021-02-19 17:43:34,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60053cc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:43:34, skipping insertion in model container [2021-02-19 17:43:34,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:43:34" (3/3) ... [2021-02-19 17:43:34,881 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_structure_ptr-2.i [2021-02-19 17:43:34,891 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:43:34,899 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:43:34,924 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:43:34,979 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:43:34,980 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:43:34,980 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:43:34,980 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:43:34,980 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:43:34,980 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:43:34,980 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:43:34,981 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:43:35,022 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2021-02-19 17:43:35,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-02-19 17:43:35,031 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:43:35,032 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:43:35,032 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:43:35,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:43:35,046 INFO L82 PathProgramCache]: Analyzing trace with hash -419055456, now seen corresponding path program 1 times [2021-02-19 17:43:35,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:43:35,060 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168376025] [2021-02-19 17:43:35,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:43:35,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:43:35,533 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:43:35,535 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:43:35,538 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:43:35,539 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:43:35,560 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:43:35,561 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:43:35,576 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:43:35,577 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:43:35,592 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:43:35,594 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:43:35,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:43:35,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:43:35,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:43:35,661 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:43:35,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-19 17:43:35,666 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168376025] [2021-02-19 17:43:35,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:43:35,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 17:43:35,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855915920] [2021-02-19 17:43:35,673 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 17:43:35,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:43:35,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 17:43:35,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-19 17:43:35,694 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2021-02-19 17:43:35,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:43:35,915 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-02-19 17:43:35,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:43:35,917 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2021-02-19 17:43:35,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:43:35,925 INFO L225 Difference]: With dead ends: 25 [2021-02-19 17:43:35,925 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 17:43:35,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:43:35,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 17:43:35,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 17:43:35,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 17:43:35,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 17:43:35,965 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2021-02-19 17:43:35,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:43:35,965 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 17:43:35,965 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 17:43:35,966 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 17:43:35,966 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 17:43:35,966 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:43:35,969 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 17:43:36,125 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 12) no Hoare annotation was computed. [2021-02-19 17:43:36,126 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 12) no Hoare annotation was computed. [2021-02-19 17:43:36,126 INFO L189 CegarLoopUtils]: For program point L12-1(line 12) no Hoare annotation was computed. [2021-02-19 17:43:36,127 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:43:36,127 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)|)) [2021-02-19 17:43:36,128 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:43:36,128 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:43:36,128 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-19 17:43:36,129 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 17:43:36,130 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:43:36,130 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 38 47) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2021-02-19 17:43:36,130 INFO L185 CegarLoopUtils]: At program point L45(line 45) the Hoare annotation is: (= |main_#t~mem7| 4) [2021-02-19 17:43:36,131 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 38 47) no Hoare annotation was computed. [2021-02-19 17:43:36,131 INFO L189 CegarLoopUtils]: For program point L45-1(line 45) no Hoare annotation was computed. [2021-02-19 17:43:36,131 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 38 47) no Hoare annotation was computed. [2021-02-19 17:43:36,132 INFO L189 CegarLoopUtils]: For program point L15(line 15) no Hoare annotation was computed. [2021-02-19 17:43:36,133 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 13 18) the Hoare annotation is: true [2021-02-19 17:43:36,133 INFO L189 CegarLoopUtils]: For program point L14(lines 14 16) no Hoare annotation was computed. [2021-02-19 17:43:36,133 INFO L189 CegarLoopUtils]: For program point L14-2(lines 13 18) no Hoare annotation was computed. [2021-02-19 17:43:36,133 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertEXIT(lines 13 18) no Hoare annotation was computed. [2021-02-19 17:43:36,134 INFO L189 CegarLoopUtils]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2021-02-19 17:43:36,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:43:36 BoogieIcfgContainer [2021-02-19 17:43:36,142 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:43:36,146 INFO L168 Benchmark]: Toolchain (without parser) took 2257.83 ms. Allocated memory is still 151.0 MB. Free memory was 126.1 MB in the beginning and 80.6 MB in the end (delta: 45.6 MB). Peak memory consumption was 47.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:43:36,148 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. [2021-02-19 17:43:36,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 262.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2021-02-19 17:43:36,154 INFO L168 Benchmark]: Boogie Preprocessor took 45.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-19 17:43:36,155 INFO L168 Benchmark]: RCFGBuilder took 661.09 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 130.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. [2021-02-19 17:43:36,157 INFO L168 Benchmark]: TraceAbstraction took 1271.12 ms. Allocated memory is still 151.0 MB. Free memory was 130.4 MB in the beginning and 80.6 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. [2021-02-19 17:43:36,167 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 262.69 ms. Allocated memory is still 151.0 MB. Free memory was 125.0 MB in the beginning and 114.8 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 45.03 ms. Allocated memory is still 151.0 MB. Free memory was 114.6 MB in the beginning and 113.2 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 661.09 ms. Allocated memory is still 151.0 MB. Free memory was 113.2 MB in the beginning and 130.9 MB in the end (delta: -17.7 MB). Peak memory consumption was 15.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1271.12 ms. Allocated memory is still 151.0 MB. Free memory was 130.4 MB in the beginning and 80.6 MB in the end (delta: 49.8 MB). Peak memory consumption was 50.3 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.9s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 8 SDslu, 29 SDs, 0 SdLazy, 21 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 38 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 50 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 369 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...