/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/test09.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-19 17:44:39,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-19 17:44:39,028 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-19 17:44:39,082 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-19 17:44:39,119 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-19 17:44:39,120 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-19 17:44:39,122 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-19 17:44:39,123 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-19 17:44:39,124 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-19 17:44:39,125 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-19 17:44:39,127 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-19 17:44:39,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-19 17:44:39,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-19 17:44:39,132 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-19 17:44:39,133 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-19 17:44:39,134 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-19 17:44:39,137 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-02-19 17:44:39,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-19 17:44:39,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-19 17:44:39,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-19 17:44:39,149 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 17:44:39,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-19 17:44:39,193 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-19 17:44:39,198 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-19 17:44:39,198 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-19 17:44:39,198 INFO L138 SettingsManager]: * Use SBE=true [2021-02-19 17:44:39,198 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-19 17:44:39,199 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-19 17:44:39,199 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-19 17:44:39,199 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-19 17:44:39,199 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-19 17:44:39,200 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-19 17:44:39,200 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-19 17:44:39,200 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-19 17:44:39,201 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-19 17:44:39,201 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-19 17:44:39,201 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-19 17:44:39,201 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-19 17:44:39,201 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-19 17:44:39,202 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-19 17:44:39,202 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-19 17:44:39,202 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-19 17:44:39,202 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-19 17:44:39,202 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-19 17:44:39,203 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-19 17:44:39,203 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-19 17:44:39,203 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-19 17:44:39,203 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-19 17:44:39,203 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-19 17:44:39,204 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-19 17:44:39,607 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-19 17:44:39,636 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-19 17:44:39,639 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-19 17:44:39,641 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-19 17:44:39,642 INFO L275 PluginConnector]: CDTParser initialized [2021-02-19 17:44:39,643 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test09.c [2021-02-19 17:44:39,730 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032d205df/3f5d7e06fec94d6d9d64474de67d504d/FLAG53fc134be [2021-02-19 17:44:40,277 INFO L306 CDTParser]: Found 1 translation units. [2021-02-19 17:44:40,278 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/test09.c [2021-02-19 17:44:40,285 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032d205df/3f5d7e06fec94d6d9d64474de67d504d/FLAG53fc134be [2021-02-19 17:44:40,669 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/032d205df/3f5d7e06fec94d6d9d64474de67d504d [2021-02-19 17:44:40,674 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-19 17:44:40,685 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-19 17:44:40,687 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-19 17:44:40,687 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-19 17:44:40,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-19 17:44:40,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,693 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@62f892df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40, skipping insertion in model container [2021-02-19 17:44:40,694 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,702 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-19 17:44:40,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-19 17:44:40,859 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/test09.c[592,605] [2021-02-19 17:44:40,863 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:44:40,872 INFO L203 MainTranslator]: Completed pre-run [2021-02-19 17:44:40,890 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/test09.c[592,605] [2021-02-19 17:44:40,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-19 17:44:40,907 INFO L208 MainTranslator]: Completed translation [2021-02-19 17:44:40,907 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40 WrapperNode [2021-02-19 17:44:40,907 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-19 17:44:40,909 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-19 17:44:40,909 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-19 17:44:40,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-19 17:44:40,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,928 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,929 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (1/1) ... [2021-02-19 17:44:40,942 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-19 17:44:40,943 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-19 17:44:40,943 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-19 17:44:40,943 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-19 17:44:40,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (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 17:44:41,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-19 17:44:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-19 17:44:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-19 17:44:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-02-19 17:44:41,043 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-19 17:44:41,043 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-19 17:44:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-19 17:44:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-19 17:44:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-19 17:44:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-02-19 17:44:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-19 17:44:41,044 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-19 17:44:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-19 17:44:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-19 17:44:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-19 17:44:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-19 17:44:41,045 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-19 17:44:41,313 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-19 17:44:41,313 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-02-19 17:44:41,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:44:41 BoogieIcfgContainer [2021-02-19 17:44:41,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-19 17:44:41,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-19 17:44:41,318 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-19 17:44:41,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-19 17:44:41,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 05:44:40" (1/3) ... [2021-02-19 17:44:41,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba7b473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:44:41, skipping insertion in model container [2021-02-19 17:44:41,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 05:44:40" (2/3) ... [2021-02-19 17:44:41,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ba7b473 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 05:44:41, skipping insertion in model container [2021-02-19 17:44:41,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 05:44:41" (3/3) ... [2021-02-19 17:44:41,328 INFO L111 eAbstractionObserver]: Analyzing ICFG test09.c [2021-02-19 17:44:41,336 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-19 17:44:41,342 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-19 17:44:41,366 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-19 17:44:41,410 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-19 17:44:41,410 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-19 17:44:41,410 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-19 17:44:41,411 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-19 17:44:41,411 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-19 17:44:41,411 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-19 17:44:41,411 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-19 17:44:41,411 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-19 17:44:41,455 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2021-02-19 17:44:41,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-19 17:44:41,468 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:44:41,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:44:41,472 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:44:41,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:44:41,508 INFO L82 PathProgramCache]: Analyzing trace with hash -1732386317, now seen corresponding path program 1 times [2021-02-19 17:44:41,536 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:44:41,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089404408] [2021-02-19 17:44:41,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:44:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:44:41,837 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:41,838 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:44:41,844 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:41,846 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:44:41,867 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:41,868 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-19 17:44:41,878 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:41,879 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:44:41,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:44:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:44:42,001 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:42,002 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:44:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:44:42,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:44:42,035 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:42,036 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:44:42,037 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:42,039 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-19 17:44:42,044 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 17:44:42,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089404408] [2021-02-19 17:44:42,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:44:42,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-19 17:44:42,047 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392326834] [2021-02-19 17:44:42,052 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-19 17:44:42,053 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:44:42,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-19 17:44:42,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-02-19 17:44:42,071 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 6 states. [2021-02-19 17:44:42,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:44:42,358 INFO L93 Difference]: Finished difference Result 33 states and 33 transitions. [2021-02-19 17:44:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-19 17:44:42,361 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2021-02-19 17:44:42,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:44:42,370 INFO L225 Difference]: With dead ends: 33 [2021-02-19 17:44:42,370 INFO L226 Difference]: Without dead ends: 15 [2021-02-19 17:44:42,374 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:44:42,393 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2021-02-19 17:44:42,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2021-02-19 17:44:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2021-02-19 17:44:42,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 14 transitions. [2021-02-19 17:44:42,415 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 14 transitions. Word has length 14 [2021-02-19 17:44:42,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:44:42,416 INFO L480 AbstractCegarLoop]: Abstraction has 15 states and 14 transitions. [2021-02-19 17:44:42,416 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-19 17:44:42,416 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 14 transitions. [2021-02-19 17:44:42,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-02-19 17:44:42,417 INFO L414 BasicCegarLoop]: Found error trace [2021-02-19 17:44:42,417 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-19 17:44:42,417 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-19 17:44:42,417 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-19 17:44:42,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-19 17:44:42,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1703757166, now seen corresponding path program 1 times [2021-02-19 17:44:42,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-19 17:44:42,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432438017] [2021-02-19 17:44:42,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-19 17:44:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:44:42,542 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:42,543 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:44:42,553 WARN L141 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size [2021-02-19 17:44:42,555 WARN L147 QuantifierPusher]: treesize reduction 2, result has 87.5 percent of original size 14 [2021-02-19 17:44:42,583 WARN L141 QuantifierPusher]: treesize reduction 22, result has 79.4 percent of original size [2021-02-19 17:44:42,593 WARN L147 QuantifierPusher]: treesize reduction 22, result has 79.4 percent of original size 85 [2021-02-19 17:44:42,602 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:42,603 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-19 17:44:42,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-19 17:44:42,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:44:42,726 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:42,727 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-02-19 17:44:42,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-02-19 17:44:42,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-19 17:44:42,756 WARN L141 QuantifierPusher]: treesize reduction 4, result has 88.9 percent of original size [2021-02-19 17:44:42,758 WARN L147 QuantifierPusher]: treesize reduction 4, result has 88.9 percent of original size 32 [2021-02-19 17:44:42,790 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-19 17:44:42,793 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 23 [2021-02-19 17:44:42,816 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 17:44:42,817 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432438017] [2021-02-19 17:44:42,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-19 17:44:42,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-02-19 17:44:42,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732715518] [2021-02-19 17:44:42,819 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-19 17:44:42,820 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-19 17:44:42,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-19 17:44:42,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-02-19 17:44:42,821 INFO L87 Difference]: Start difference. First operand 15 states and 14 transitions. Second operand 8 states. [2021-02-19 17:44:43,146 WARN L202 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 68 [2021-02-19 17:44:43,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-19 17:44:43,150 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2021-02-19 17:44:43,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-02-19 17:44:43,151 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 14 [2021-02-19 17:44:43,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-19 17:44:43,151 INFO L225 Difference]: With dead ends: 15 [2021-02-19 17:44:43,152 INFO L226 Difference]: Without dead ends: 0 [2021-02-19 17:44:43,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-02-19 17:44:43,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-19 17:44:43,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-19 17:44:43,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-19 17:44:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-19 17:44:43,154 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 14 [2021-02-19 17:44:43,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-19 17:44:43,155 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-19 17:44:43,155 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-19 17:44:43,155 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-19 17:44:43,155 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-19 17:44:43,155 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-19 17:44:43,157 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-19 17:44:43,357 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-19 17:44:43,357 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-19 17:44:43,357 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-19 17:44:43,357 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:44:43,358 INFO L185 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |~#a~0.offset| |old(~#a~0.offset)|) (= ~p2~0.offset |old(~p2~0.offset)|) (= |~#b~0.base| |old(~#b~0.base)|) (= ~p1~0.offset |old(~p1~0.offset)|) (= |~#a~0.base| |old(~#a~0.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |old(#valid)| |#valid|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~p2~0.base |old(~p2~0.base)|) (= |~#b~0.offset| |old(~#b~0.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= ~p1~0.base |old(~p1~0.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2021-02-19 17:44:43,358 INFO L189 CegarLoopUtils]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:44:43,358 INFO L189 CegarLoopUtils]: For program point L11(lines 11 16) no Hoare annotation was computed. [2021-02-19 17:44:43,358 INFO L189 CegarLoopUtils]: For program point fEXIT(lines 9 17) no Hoare annotation was computed. [2021-02-19 17:44:43,359 INFO L185 CegarLoopUtils]: At program point fENTRY(lines 9 17) the Hoare annotation is: (or (not (= |old(~p1~0.offset)| |~#a~0.offset|)) (not (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)) (and (= ~p1~0.offset |~#a~0.offset|) (= |old(~p1~0.base)| ~p1~0.base)) (not (= |old(~p1~0.base)| |~#a~0.base|)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-19 17:44:43,359 INFO L189 CegarLoopUtils]: For program point fFINAL(lines 9 17) no Hoare annotation was computed. [2021-02-19 17:44:43,359 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-02-19 17:44:43,359 INFO L185 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: (and (= ~p2~0.base ~p1~0.base) (= ~p2~0.offset ~p1~0.offset) (not (= |~#b~0.base| |~#a~0.base|))) [2021-02-19 17:44:43,359 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-19 17:44:43,359 INFO L189 CegarLoopUtils]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2021-02-19 17:44:43,360 INFO L189 CegarLoopUtils]: For program point L33(lines 33 35) no Hoare annotation was computed. [2021-02-19 17:44:43,360 INFO L189 CegarLoopUtils]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 39) no Hoare annotation was computed. [2021-02-19 17:44:43,360 INFO L185 CegarLoopUtils]: At program point mainENTRY(lines 19 41) the Hoare annotation is: (or (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= |old(~p1~0.offset)| ~p1~0.offset) (= ~p2~0.base ~p1~0.base) (= |old(~p1~0.base)| ~p1~0.base) (= ~p2~0.offset ~p1~0.offset)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-19 17:44:43,360 INFO L185 CegarLoopUtils]: At program point L29(line 29) the Hoare annotation is: (or (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (and (= |~#a~0.base| ~p1~0.base) (= ~p1~0.offset |~#a~0.offset|) (= (select (select |#memory_int| ~p2~0.base) ~p2~0.offset) 1)) (= |~#b~0.base| |~#a~0.base|)) [2021-02-19 17:44:43,361 INFO L189 CegarLoopUtils]: For program point mainFINAL(lines 19 41) no Hoare annotation was computed. [2021-02-19 17:44:43,361 INFO L189 CegarLoopUtils]: For program point L29-1(line 29) no Hoare annotation was computed. [2021-02-19 17:44:43,361 INFO L189 CegarLoopUtils]: For program point mainEXIT(lines 19 41) no Hoare annotation was computed. [2021-02-19 17:44:43,361 INFO L185 CegarLoopUtils]: At program point L34(lines 19 41) the Hoare annotation is: (or (not (= |old(~p2~0.offset)| |old(~p1~0.offset)|)) (not (= |old(~p1~0.base)| |old(~p2~0.base)|)) (= |~#a~0.base| |~#b~0.base|)) [2021-02-19 17:44:43,379 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.02 05:44:43 BoogieIcfgContainer [2021-02-19 17:44:43,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-19 17:44:43,381 INFO L168 Benchmark]: Toolchain (without parser) took 2704.88 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 142.2 MB in the beginning and 100.6 MB in the end (delta: 41.6 MB). Peak memory consumption was 76.2 MB. Max. memory is 8.0 GB. [2021-02-19 17:44:43,382 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 166.7 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:44:43,383 INFO L168 Benchmark]: CACSL2BoogieTranslator took 220.68 ms. Allocated memory is still 166.7 MB. Free memory was 141.0 MB in the beginning and 131.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-19 17:44:43,383 INFO L168 Benchmark]: Boogie Preprocessor took 33.57 ms. Allocated memory is still 166.7 MB. Free memory was 131.7 MB in the beginning and 130.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-19 17:44:43,384 INFO L168 Benchmark]: RCFGBuilder took 372.65 ms. Allocated memory is still 166.7 MB. Free memory was 130.2 MB in the beginning and 115.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2021-02-19 17:44:43,385 INFO L168 Benchmark]: TraceAbstraction took 2062.02 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 114.8 MB in the beginning and 100.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. [2021-02-19 17:44:43,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 166.7 MB. Free memory is still 138.0 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 220.68 ms. Allocated memory is still 166.7 MB. Free memory was 141.0 MB in the beginning and 131.7 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 33.57 ms. Allocated memory is still 166.7 MB. Free memory was 131.7 MB in the beginning and 130.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 8.0 GB. * RCFGBuilder took 372.65 ms. Allocated memory is still 166.7 MB. Free memory was 130.2 MB in the beginning and 115.2 MB in the end (delta: 15.0 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2062.02 ms. Allocated memory was 166.7 MB in the beginning and 200.3 MB in the end (delta: 33.6 MB). Free memory was 114.8 MB in the beginning and 100.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 48.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 39]: 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: 19]: Loop Invariant Derived loop invariant: (!(\old(p2) == \old(p1)) || !(\old(p1) == \old(p2))) || a == b - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 13 SDslu, 36 SDs, 0 SdLazy, 67 SolverSat, 12 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 7 PreInvPairs, 7 NumberOfFragments, 157 HoareAnnotationTreeSize, 7 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 28 NumberOfCodeBlocks, 28 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 26 ConstructedInterpolants, 0 QuantifiedInterpolants, 3458 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 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...