/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/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf -i ../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-a47f07a [2021-04-16 07:16:13,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-04-16 07:16:13,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-04-16 07:16:13,274 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-04-16 07:16:13,275 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-04-16 07:16:13,278 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-04-16 07:16:13,280 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-04-16 07:16:13,285 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-04-16 07:16:13,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-04-16 07:16:13,292 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-04-16 07:16:13,293 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-04-16 07:16:13,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-04-16 07:16:13,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-04-16 07:16:13,296 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-04-16 07:16:13,297 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-04-16 07:16:13,301 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-04-16 07:16:13,304 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-04-16 07:16:13,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-04-16 07:16:13,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-04-16 07:16:13,310 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-04-16 07:16:13,311 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-04-16 07:16:13,314 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-04-16 07:16:13,315 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-04-16 07:16:13,316 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-04-16 07:16:13,320 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2021-04-16 07:16:13,329 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-04-16 07:16:13,329 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-04-16 07:16:13,330 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-04-16 07:16:13,333 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationJordan_32.epf [2021-04-16 07:16:13,346 INFO L113 SettingsManager]: Loading preferences was successful [2021-04-16 07:16:13,347 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-04-16 07:16:13,350 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-04-16 07:16:13,350 INFO L138 SettingsManager]: * sizeof long=4 [2021-04-16 07:16:13,350 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-04-16 07:16:13,351 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-04-16 07:16:13,351 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-04-16 07:16:13,351 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-04-16 07:16:13,351 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-04-16 07:16:13,351 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-04-16 07:16:13,352 INFO L138 SettingsManager]: * sizeof long double=12 [2021-04-16 07:16:13,352 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-04-16 07:16:13,352 INFO L138 SettingsManager]: * Use constant arrays=true [2021-04-16 07:16:13,352 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-04-16 07:16:13,352 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-04-16 07:16:13,352 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-04-16 07:16:13,353 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-04-16 07:16:13,353 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-04-16 07:16:13,353 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-04-16 07:16:13,353 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-04-16 07:16:13,353 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-04-16 07:16:13,353 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-04-16 07:16:13,353 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=JORDAN [2021-04-16 07:16:13,353 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-04-16 07:16:13,686 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-04-16 07:16:13,705 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-04-16 07:16:13,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-04-16 07:16:13,708 INFO L271 PluginConnector]: Initializing CDTParser... [2021-04-16 07:16:13,709 INFO L275 PluginConnector]: CDTParser initialized [2021-04-16 07:16:13,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2021-04-16 07:16:13,769 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8255425/410a2eaab0654a318301b4a62ba28b06/FLAG94e65cef3 [2021-04-16 07:16:14,212 INFO L306 CDTParser]: Found 1 translation units. [2021-04-16 07:16:14,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c [2021-04-16 07:16:14,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8255425/410a2eaab0654a318301b4a62ba28b06/FLAG94e65cef3 [2021-04-16 07:16:14,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0d8255425/410a2eaab0654a318301b4a62ba28b06 [2021-04-16 07:16:14,629 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-04-16 07:16:14,630 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-04-16 07:16:14,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-04-16 07:16:14,632 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-04-16 07:16:14,634 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-04-16 07:16:14,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,635 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@fff3fd2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14, skipping insertion in model container [2021-04-16 07:16:14,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,647 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-04-16 07:16:14,658 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-04-16 07:16:14,797 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c[1110,1123] [2021-04-16 07:16:14,800 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:16:14,808 INFO L203 MainTranslator]: Completed pre-run [2021-04-16 07:16:14,818 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/loop-lit/jm2006.c.i.v+cfa-reducer.c[1110,1123] [2021-04-16 07:16:14,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-04-16 07:16:14,829 INFO L208 MainTranslator]: Completed translation [2021-04-16 07:16:14,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14 WrapperNode [2021-04-16 07:16:14,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-04-16 07:16:14,830 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-04-16 07:16:14,830 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-04-16 07:16:14,830 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-04-16 07:16:14,839 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,839 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,843 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,844 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,850 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (1/1) ... [2021-04-16 07:16:14,852 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-04-16 07:16:14,853 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-04-16 07:16:14,853 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-04-16 07:16:14,853 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-04-16 07:16:14,854 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (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 [2021-04-16 07:16:14,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-04-16 07:16:14,906 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-04-16 07:16:14,906 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-04-16 07:16:14,907 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-04-16 07:16:14,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-04-16 07:16:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-04-16 07:16:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-04-16 07:16:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-04-16 07:16:14,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-04-16 07:16:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-04-16 07:16:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-04-16 07:16:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-04-16 07:16:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-04-16 07:16:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-04-16 07:16:14,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-04-16 07:16:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-04-16 07:16:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-04-16 07:16:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-04-16 07:16:14,909 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-04-16 07:16:15,203 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-04-16 07:16:15,204 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-04-16 07:16:15,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:16:15 BoogieIcfgContainer [2021-04-16 07:16:15,206 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-04-16 07:16:15,207 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-04-16 07:16:15,208 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-04-16 07:16:15,211 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-04-16 07:16:15,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.04 07:16:14" (1/3) ... [2021-04-16 07:16:15,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:16:15, skipping insertion in model container [2021-04-16 07:16:15,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.04 07:16:14" (2/3) ... [2021-04-16 07:16:15,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d3ef7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.04 07:16:15, skipping insertion in model container [2021-04-16 07:16:15,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.04 07:16:15" (3/3) ... [2021-04-16 07:16:15,231 INFO L111 eAbstractionObserver]: Analyzing ICFG jm2006.c.i.v+cfa-reducer.c [2021-04-16 07:16:15,237 INFO L149 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-04-16 07:16:15,242 INFO L161 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-04-16 07:16:15,268 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-04-16 07:16:15,317 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-04-16 07:16:15,317 INFO L377 AbstractCegarLoop]: Hoare is true [2021-04-16 07:16:15,317 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-04-16 07:16:15,317 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-04-16 07:16:15,317 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-04-16 07:16:15,317 INFO L381 AbstractCegarLoop]: Difference is false [2021-04-16 07:16:15,318 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-04-16 07:16:15,318 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-04-16 07:16:15,335 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-04-16 07:16:15,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-04-16 07:16:15,350 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:16:15,351 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:16:15,351 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:16:15,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:16:15,356 INFO L82 PathProgramCache]: Analyzing trace with hash 1488249160, now seen corresponding path program 1 times [2021-04-16 07:16:15,365 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:16:15,365 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313909924] [2021-04-16 07:16:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:16:15,438 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-04-16 07:16:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:16:15,654 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:15,657 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:16:15,669 INFO L142 QuantifierPusher]: treesize reduction 5, result has 83.3 percent of original size [2021-04-16 07:16:15,673 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 25 [2021-04-16 07:16:15,733 INFO L142 QuantifierPusher]: treesize reduction 5, result has 80.8 percent of original size [2021-04-16 07:16:15,734 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:16:15,756 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:15,756 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:16:15,762 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:15,763 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:16:15,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:16:15,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:16:15,817 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:15,818 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:16:15,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:16:15,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313909924] [2021-04-16 07:16:15,821 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:16:15,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-04-16 07:16:15,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90286204] [2021-04-16 07:16:15,824 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-04-16 07:16:15,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:16:15,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-04-16 07:16:15,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-04-16 07:16:15,834 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.5454545454545454) internal successors, (17), 12 states have internal predecessors, (17), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:16:16,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:16:16,055 INFO L93 Difference]: Finished difference Result 32 states and 38 transitions. [2021-04-16 07:16:16,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-04-16 07:16:16,056 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-04-16 07:16:16,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:16:16,061 INFO L225 Difference]: With dead ends: 32 [2021-04-16 07:16:16,061 INFO L226 Difference]: Without dead ends: 14 [2021-04-16 07:16:16,063 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 239.4ms TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-04-16 07:16:16,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-04-16 07:16:16,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-04-16 07:16:16,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.1) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:16:16,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-04-16 07:16:16,085 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 12 [2021-04-16 07:16:16,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:16:16,086 INFO L480 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-04-16 07:16:16,086 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 1.5) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:16:16,086 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-04-16 07:16:16,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-04-16 07:16:16,086 INFO L511 BasicCegarLoop]: Found error trace [2021-04-16 07:16:16,086 INFO L519 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-04-16 07:16:16,087 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-04-16 07:16:16,087 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-04-16 07:16:16,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-04-16 07:16:16,087 INFO L82 PathProgramCache]: Analyzing trace with hash -1110855594, now seen corresponding path program 1 times [2021-04-16 07:16:16,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-04-16 07:16:16,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [823699322] [2021-04-16 07:16:16,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-04-16 07:16:16,118 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,129 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:16:16,130 INFO L175 rdanLoopAcceleration]: Guard: Formula: (not (= 0 v_main_~main__x~0_6)) InVars {main_~main__x~0=v_main_~main__x~0_6} OutVars{main_~main__x~0=v_main_~main__x~0_6} AuxVars[] AssignedVars[] [2021-04-16 07:16:16,141 WARN L240 tifierPushTermWalker]: treesize reduction 18, result has 79.5 percent of original size [2021-04-16 07:16:16,144 WARN L240 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,149 INFO L108 tifierPushTermWalker]: treesize reduction 2, result has 33.3 percent of original size [2021-04-16 07:16:16,150 INFO L108 tifierPushTermWalker]: treesize reduction 4, result has 20.0 percent of original size [2021-04-16 07:16:16,151 WARN L245 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-04-16 07:16:16,155 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,157 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,160 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,162 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,164 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,168 INFO L118 tifierPushTermWalker]: treesize reduction 3, result has 25.0 percent of original size [2021-04-16 07:16:16,170 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,173 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,175 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,177 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,179 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,182 INFO L108 tifierPushTermWalker]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,183 WARN L245 tifierPushTermWalker]: treesize reduction 18, result has 79.5 percent of original size 57 [2021-04-16 07:16:16,202 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,203 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 59 [2021-04-16 07:16:16,203 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation PRECISE [2021-04-16 07:16:16,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:16:16,247 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,248 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:16:16,248 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,249 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 15 [2021-04-16 07:16:16,255 INFO L142 QuantifierPusher]: treesize reduction 6, result has 83.3 percent of original size [2021-04-16 07:16:16,256 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 30 [2021-04-16 07:16:16,270 INFO L142 QuantifierPusher]: treesize reduction 6, result has 77.8 percent of original size [2021-04-16 07:16:16,270 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-04-16 07:16:16,280 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,281 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 4 [2021-04-16 07:16:16,285 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,285 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:16:16,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-04-16 07:16:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-04-16 07:16:16,314 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,314 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:16:16,315 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-04-16 07:16:16,317 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,321 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-04-16 07:16:16,323 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,324 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 74 [2021-04-16 07:16:16,325 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 75 [2021-04-16 07:16:16,335 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,336 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 29 [2021-04-16 07:16:16,349 INFO L142 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-04-16 07:16:16,350 INFO L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-04-16 07:16:16,350 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [823699322] [2021-04-16 07:16:16,350 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-04-16 07:16:16,350 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-04-16 07:16:16,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066617151] [2021-04-16 07:16:16,351 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states [2021-04-16 07:16:16,351 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-04-16 07:16:16,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-04-16 07:16:16,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-04-16 07:16:16,352 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:16:16,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-04-16 07:16:16,516 INFO L93 Difference]: Finished difference Result 14 states and 14 transitions. [2021-04-16 07:16:16,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-04-16 07:16:16,517 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-04-16 07:16:16,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-04-16 07:16:16,517 INFO L225 Difference]: With dead ends: 14 [2021-04-16 07:16:16,517 INFO L226 Difference]: Without dead ends: 0 [2021-04-16 07:16:16,518 INFO L775 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 208.2ms TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2021-04-16 07:16:16,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-04-16 07:16:16,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-04-16 07:16:16,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-04-16 07:16:16,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-04-16 07:16:16,519 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2021-04-16 07:16:16,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-04-16 07:16:16,519 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-04-16 07:16:16,519 INFO L481 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 6 states have internal predecessors, (10), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-04-16 07:16:16,519 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-04-16 07:16:16,519 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-04-16 07:16:16,519 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-04-16 07:16:16,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-04-16 07:16:16,830 INFO L198 CegarLoopUtils]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2021-04-16 07:16:16,830 INFO L198 CegarLoopUtils]: For program point reach_errorENTRY(line 4) no Hoare annotation was computed. [2021-04-16 07:16:16,831 INFO L198 CegarLoopUtils]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2021-04-16 07:16:16,831 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2021-04-16 07:16:16,831 INFO L194 CegarLoopUtils]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= ~__return_main~0 |old(~__return_main~0)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= ~__return_72~0 |old(~__return_72~0)|) (= |old(#valid)| |#valid|)) [2021-04-16 07:16:16,831 INFO L201 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-04-16 07:16:16,831 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-04-16 07:16:16,831 INFO L201 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-04-16 07:16:16,831 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-04-16 07:16:16,831 INFO L201 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-04-16 07:16:16,831 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notENTRY(lines 6 8) no Hoare annotation was computed. [2021-04-16 07:16:16,832 INFO L198 CegarLoopUtils]: For program point L7(line 7) no Hoare annotation was computed. [2021-04-16 07:16:16,832 INFO L198 CegarLoopUtils]: For program point L7-2(lines 6 8) no Hoare annotation was computed. [2021-04-16 07:16:16,832 INFO L198 CegarLoopUtils]: For program point assume_abort_if_notEXIT(lines 6 8) no Hoare annotation was computed. [2021-04-16 07:16:16,832 INFO L194 CegarLoopUtils]: At program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 53) the Hoare annotation is: false [2021-04-16 07:16:16,832 INFO L194 CegarLoopUtils]: At program point mainENTRY(lines 13 70) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2021-04-16 07:16:16,832 INFO L194 CegarLoopUtils]: At program point L25(lines 25 68) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2021-04-16 07:16:16,832 INFO L194 CegarLoopUtils]: At program point mainEXIT(lines 13 70) the Hoare annotation is: (or (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2021-04-16 07:16:16,832 INFO L194 CegarLoopUtils]: At program point L53(line 53) the Hoare annotation is: false [2021-04-16 07:16:16,832 INFO L194 CegarLoopUtils]: At program point L19(lines 19 69) the Hoare annotation is: (= |old(~__return_72~0)| ~__return_72~0) [2021-04-16 07:16:16,833 INFO L194 CegarLoopUtils]: At program point L51(lines 51 60) the Hoare annotation is: (let ((.cse3 (<= main_~main__y~0 0)) (.cse1 (+ main_~main__j~0 main_~main__x~0)) (.cse0 (< 0 (+ main_~main__y~0 1))) (.cse2 (+ main_~main__i~0 main_~main__y~0))) (and (or .cse0 (<= .cse1 .cse2)) (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0)) (or .cse3 (<= .cse2 main_~main__j~0)) (or .cse3 (<= .cse2 .cse1)) (or .cse0 (<= main_~main__j~0 .cse2)))) [2021-04-16 07:16:16,833 INFO L194 CegarLoopUtils]: At program point mainFINAL(lines 13 70) the Hoare annotation is: (or (= |old(~__return_72~0)| ~__return_72~0) (not (= main_~__VERIFIER_assert__cond~0 0))) [2021-04-16 07:16:16,833 INFO L194 CegarLoopUtils]: At program point L44(lines 44 66) the Hoare annotation is: (let ((.cse3 (<= main_~main__y~0 0)) (.cse1 (+ main_~main__j~0 main_~main__x~0)) (.cse0 (< 0 (+ main_~main__y~0 1))) (.cse2 (+ main_~main__i~0 main_~main__y~0))) (and (or .cse0 (<= .cse1 .cse2)) (= |old(~__return_72~0)| ~__return_72~0) (or .cse3 (<= .cse2 main_~main__j~0)) (or .cse3 (<= .cse2 .cse1)) (or .cse0 (<= main_~main__j~0 .cse2)))) [2021-04-16 07:16:16,833 INFO L194 CegarLoopUtils]: At program point L40(lines 30 68) the Hoare annotation is: (let ((.cse1 (+ main_~main__i~0 main_~main__y~0)) (.cse0 (+ main_~main__j~0 main_~main__x~0))) (and (= |old(~__return_72~0)| ~__return_72~0) (<= .cse0 .cse1) (<= .cse1 .cse0))) [2021-04-16 07:16:16,846 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 16.04 07:16:16 BoogieIcfgContainer [2021-04-16 07:16:16,847 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-04-16 07:16:16,848 INFO L168 Benchmark]: Toolchain (without parser) took 2216.58 ms. Allocated memory is still 200.3 MB. Free memory was 165.6 MB in the beginning and 152.9 MB in the end (delta: 12.7 MB). Peak memory consumption was 97.7 MB. Max. memory is 8.0 GB. [2021-04-16 07:16:16,848 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 200.3 MB. Free memory was 182.0 MB in the beginning and 181.9 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 8.0 GB. [2021-04-16 07:16:16,849 INFO L168 Benchmark]: CACSL2BoogieTranslator took 198.11 ms. Allocated memory is still 200.3 MB. Free memory was 165.4 MB in the beginning and 180.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. [2021-04-16 07:16:16,852 INFO L168 Benchmark]: Boogie Preprocessor took 22.02 ms. Allocated memory is still 200.3 MB. Free memory was 180.6 MB in the beginning and 179.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2021-04-16 07:16:16,852 INFO L168 Benchmark]: RCFGBuilder took 353.15 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 165.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2021-04-16 07:16:16,852 INFO L168 Benchmark]: TraceAbstraction took 1639.07 ms. Allocated memory is still 200.3 MB. Free memory was 164.4 MB in the beginning and 152.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. [2021-04-16 07:16:16,856 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 200.3 MB. Free memory was 182.0 MB in the beginning and 181.9 MB in the end (delta: 75.0 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 198.11 ms. Allocated memory is still 200.3 MB. Free memory was 165.4 MB in the beginning and 180.6 MB in the end (delta: -15.3 MB). Peak memory consumption was 7.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 22.02 ms. Allocated memory is still 200.3 MB. Free memory was 180.6 MB in the beginning and 179.1 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 353.15 ms. Allocated memory is still 200.3 MB. Free memory was 179.1 MB in the beginning and 165.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1639.07 ms. Allocated memory is still 200.3 MB. Free memory was 164.4 MB in the beginning and 152.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 97.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 53]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1205.6ms, OverallIterations: 2, TraceHistogramMax: 1, EmptinessCheckTime: 20.2ms, AutomataDifference: 404.6ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 310.4ms, InitialAbstractionConstructionTime: 12.1ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 23 SDtfs, 36 SDslu, 44 SDs, 0 SdLazy, 77 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 62.3ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 447.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred in iteration=0, InterpolantAutomatonStates: 15, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 13.9ms AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0ms HoareAnnotationTime, 17 LocationsWithAnnotation, 17 PreInvPairs, 30 NumberOfFragments, 188 HoareAnnotationTreeSize, 17 FomulaSimplifications, 284 FormulaSimplificationTreeSizeReduction, 55.2ms HoareSimplificationTime, 17 FomulaSimplificationsInter, 511 FormulaSimplificationTreeSizeReductionInter, 243.1ms HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: No data available, 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 30]: Loop Invariant Derived loop invariant: (\old(__return_72) == __return_72 && main__j + main__x <= main__i + main__y) && main__i + main__y <= main__j + main__x - ProcedureContractResult [Line: 13]: Procedure Contract for main Derived contract for procedure main: \old(__return_72) == __return_72 || !(__VERIFIER_assert__cond == 0) RESULT: Ultimate proved your program to be correct! Received shutdown request...