/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/acceleratedInterpolationWernerOverapprox_32.epf -i ../../../trunk/examples/svcomp/loop-invariants/odd.c -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-22 02:24:57,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-22 02:24:57,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-22 02:24:57,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2021-02-22 02:24:57,788 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-22 02:24:57,789 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-22 02:24:57,790 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-22 02:24:57,791 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationWernerOverapprox_32.epf [2021-02-22 02:24:57,819 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-22 02:24:57,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-22 02:24:57,824 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-22 02:24:57,824 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-22 02:24:57,824 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-22 02:24:57,824 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-22 02:24:57,825 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-22 02:24:57,825 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-22 02:24:57,825 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-22 02:24:57,825 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-22 02:24:57,825 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-22 02:24:57,827 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-22 02:24:57,827 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-22 02:24:57,827 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-22 02:24:57,827 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-22 02:24:57,828 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-22 02:24:57,828 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-22 02:24:57,828 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-22 02:24:57,828 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-22 02:24:57,828 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-22 02:24:57,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-22 02:24:57,829 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-22 02:24:57,829 INFO L138 SettingsManager]: * Loop acceleration method that is used by accelerated interpolation=WERNER_OVERAPPROX [2021-02-22 02:24:57,829 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-22 02:24:58,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-22 02:24:58,255 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-22 02:24:58,259 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-22 02:24:58,260 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-22 02:24:58,261 INFO L275 PluginConnector]: CDTParser initialized [2021-02-22 02:24:58,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/odd.c [2021-02-22 02:24:58,355 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f8413d9/fae434d669e14a4daaad87bd98c79bce/FLAG6a7bd9dfc [2021-02-22 02:24:58,945 INFO L306 CDTParser]: Found 1 translation units. [2021-02-22 02:24:58,945 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/loop-invariants/odd.c [2021-02-22 02:24:58,956 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f8413d9/fae434d669e14a4daaad87bd98c79bce/FLAG6a7bd9dfc [2021-02-22 02:24:59,311 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f5f8413d9/fae434d669e14a4daaad87bd98c79bce [2021-02-22 02:24:59,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-22 02:24:59,330 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-22 02:24:59,332 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-22 02:24:59,332 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-22 02:24:59,337 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-22 02:24:59,337 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40d505e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59, skipping insertion in model container [2021-02-22 02:24:59,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,348 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-22 02:24:59,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-22 02:24:59,537 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-invariants/odd.c[350,363] [2021-02-22 02:24:59,549 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:24:59,560 INFO L203 MainTranslator]: Completed pre-run [2021-02-22 02:24:59,577 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-invariants/odd.c[350,363] [2021-02-22 02:24:59,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-22 02:24:59,598 INFO L208 MainTranslator]: Completed translation [2021-02-22 02:24:59,599 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59 WrapperNode [2021-02-22 02:24:59,599 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-22 02:24:59,600 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-22 02:24:59,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-22 02:24:59,601 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-22 02:24:59,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,617 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,625 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,626 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,637 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,639 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (1/1) ... [2021-02-22 02:24:59,641 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-22 02:24:59,642 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-22 02:24:59,642 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-22 02:24:59,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-22 02:24:59,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (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 [2021-02-22 02:24:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-22 02:24:59,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-22 02:24:59,773 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-22 02:24:59,773 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-02-22 02:24:59,773 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-22 02:24:59,773 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-22 02:24:59,773 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-22 02:24:59,773 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-22 02:24:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-22 02:24:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-22 02:24:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-02-22 02:24:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-22 02:24:59,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-22 02:24:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-22 02:24:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-22 02:24:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-22 02:24:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-22 02:24:59,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-22 02:25:00,170 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-22 02:25:00,170 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-02-22 02:25:00,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:25:00 BoogieIcfgContainer [2021-02-22 02:25:00,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-22 02:25:00,174 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-22 02:25:00,174 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-22 02:25:00,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-22 02:25:00,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.02 02:24:59" (1/3) ... [2021-02-22 02:25:00,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa0b4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:25:00, skipping insertion in model container [2021-02-22 02:25:00,180 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.02 02:24:59" (2/3) ... [2021-02-22 02:25:00,180 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3fa0b4be and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.02 02:25:00, skipping insertion in model container [2021-02-22 02:25:00,181 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.02 02:25:00" (3/3) ... [2021-02-22 02:25:00,183 INFO L111 eAbstractionObserver]: Analyzing ICFG odd.c [2021-02-22 02:25:00,198 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-22 02:25:00,203 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-22 02:25:00,224 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-22 02:25:00,251 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-22 02:25:00,251 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-22 02:25:00,268 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-22 02:25:00,268 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-22 02:25:00,268 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-22 02:25:00,269 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-22 02:25:00,269 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-22 02:25:00,269 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-22 02:25:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2021-02-22 02:25:00,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-02-22 02:25:00,297 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:00,298 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:00,298 INFO L428 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:00,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:00,306 INFO L82 PathProgramCache]: Analyzing trace with hash -1932693874, now seen corresponding path program 1 times [2021-02-22 02:25:00,316 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:00,316 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828350475] [2021-02-22 02:25:00,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:00,420 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:00,660 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:00,665 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:00,667 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:00,669 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:00,820 WARN L202 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 31 [2021-02-22 02:25:00,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:00,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:00,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:00,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:00,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828350475] [2021-02-22 02:25:00,902 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:00,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-22 02:25:00,904 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392153417] [2021-02-22 02:25:00,909 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-22 02:25:00,910 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:00,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-22 02:25:00,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:25:00,932 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2021-02-22 02:25:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:01,136 INFO L93 Difference]: Finished difference Result 49 states and 52 transitions. [2021-02-22 02:25:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-22 02:25:01,139 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2021-02-22 02:25:01,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:01,149 INFO L225 Difference]: With dead ends: 49 [2021-02-22 02:25:01,149 INFO L226 Difference]: Without dead ends: 29 [2021-02-22 02:25:01,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-22 02:25:01,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-02-22 02:25:01,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2021-02-22 02:25:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-22 02:25:01,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2021-02-22 02:25:01,220 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 24 [2021-02-22 02:25:01,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:01,221 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2021-02-22 02:25:01,221 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-22 02:25:01,221 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2021-02-22 02:25:01,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-22 02:25:01,222 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:01,223 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:01,224 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-22 02:25:01,224 INFO L428 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:01,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:01,225 INFO L82 PathProgramCache]: Analyzing trace with hash 887982277, now seen corresponding path program 1 times [2021-02-22 02:25:01,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:01,227 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104899980] [2021-02-22 02:25:01,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:01,240 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-22 02:25:01,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:01,313 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:01,314 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:01,315 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:01,316 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:25:01,324 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:01,325 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:01,334 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:01,335 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:01,342 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:01,343 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:01,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:01,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:01,395 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:01,395 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:01,399 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104899980] [2021-02-22 02:25:01,399 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:01,399 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-02-22 02:25:01,400 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960215981] [2021-02-22 02:25:01,401 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states [2021-02-22 02:25:01,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:01,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-02-22 02:25:01,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-02-22 02:25:01,402 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand 6 states. [2021-02-22 02:25:01,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:01,736 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-02-22 02:25:01,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-02-22 02:25:01,741 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2021-02-22 02:25:01,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:01,743 INFO L225 Difference]: With dead ends: 39 [2021-02-22 02:25:01,743 INFO L226 Difference]: Without dead ends: 33 [2021-02-22 02:25:01,747 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-02-22 02:25:01,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-02-22 02:25:01,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2021-02-22 02:25:01,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2021-02-22 02:25:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2021-02-22 02:25:01,777 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 26 [2021-02-22 02:25:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:01,778 INFO L480 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2021-02-22 02:25:01,778 INFO L481 AbstractCegarLoop]: Interpolant automaton has 6 states. [2021-02-22 02:25:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2021-02-22 02:25:01,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2021-02-22 02:25:01,782 INFO L414 BasicCegarLoop]: Found error trace [2021-02-22 02:25:01,782 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-22 02:25:01,782 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-22 02:25:01,782 INFO L428 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-22 02:25:01,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-22 02:25:01,785 INFO L82 PathProgramCache]: Analyzing trace with hash 136008254, now seen corresponding path program 1 times [2021-02-22 02:25:01,786 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-22 02:25:01,786 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [757963976] [2021-02-22 02:25:01,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-22 02:25:01,848 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-22 02:25:01,896 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-22 02:25:01,913 WARN L141 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size [2021-02-22 02:25:01,921 WARN L147 QuantifierPusher]: treesize reduction 3, result has 83.3 percent of original size 15 [2021-02-22 02:25:01,942 WARN L141 QuantifierPusher]: treesize reduction 9, result has 47.1 percent of original size [2021-02-22 02:25:01,969 WARN L147 QuantifierPusher]: treesize reduction 9, result has 47.1 percent of original size 8 [2021-02-22 02:25:01,973 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:01,979 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 26 [2021-02-22 02:25:01,982 WARN L141 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-02-22 02:25:01,985 WARN L147 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size 13 [2021-02-22 02:25:01,987 WARN L141 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size [2021-02-22 02:25:01,989 WARN L147 QuantifierPusher]: treesize reduction 5, result has 72.2 percent of original size 13 [2021-02-22 02:25:01,997 WARN L141 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size [2021-02-22 02:25:02,000 WARN L147 QuantifierPusher]: treesize reduction 2, result has 88.2 percent of original size 15 [2021-02-22 02:25:02,004 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,009 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 34 [2021-02-22 02:25:02,010 INFO L206 tedInterpolationCore]: Starting analysis with loop acceleration approximation UNDERAPPROXIMATION [2021-02-22 02:25:02,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:02,146 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,149 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:02,152 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 5 [2021-02-22 02:25:02,161 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,163 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-02-22 02:25:02,206 WARN L141 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size [2021-02-22 02:25:02,208 WARN L147 QuantifierPusher]: treesize reduction 1, result has 97.1 percent of original size 34 [2021-02-22 02:25:02,238 WARN L141 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size [2021-02-22 02:25:02,240 WARN L147 QuantifierPusher]: treesize reduction 1, result has 96.9 percent of original size 31 [2021-02-22 02:25:02,251 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,251 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:02,259 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,260 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-22 02:25:02,269 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,270 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:02,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-22 02:25:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-22 02:25:02,323 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,324 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-22 02:25:02,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-22 02:25:02,333 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,336 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 42 [2021-02-22 02:25:02,340 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,342 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:25:02,344 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,347 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 61 [2021-02-22 02:25:02,350 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 62 [2021-02-22 02:25:02,399 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,401 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-02-22 02:25:02,419 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,420 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-02-22 02:25:02,443 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,445 WARN L159 QuantifierPusher]: Ignoring assumption. [2021-02-22 02:25:02,447 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,448 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 13 [2021-02-22 02:25:02,450 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 17 [2021-02-22 02:25:02,457 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-22 02:25:02,458 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-22 02:25:02,472 WARN L141 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size [2021-02-22 02:25:02,473 WARN L147 QuantifierPusher]: treesize reduction 6, result has 14.3 percent of original size 1 [2021-02-22 02:25:02,473 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [757963976] [2021-02-22 02:25:02,473 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-22 02:25:02,474 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-02-22 02:25:02,474 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237693642] [2021-02-22 02:25:02,474 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states [2021-02-22 02:25:02,475 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-22 02:25:02,475 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-02-22 02:25:02,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-02-22 02:25:02,476 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand 11 states. [2021-02-22 02:25:02,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-22 02:25:02,859 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-02-22 02:25:02,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-22 02:25:02,859 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 30 [2021-02-22 02:25:02,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-22 02:25:02,860 INFO L225 Difference]: With dead ends: 39 [2021-02-22 02:25:02,860 INFO L226 Difference]: Without dead ends: 0 [2021-02-22 02:25:02,862 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2021-02-22 02:25:02,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-02-22 02:25:02,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-02-22 02:25:02,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2021-02-22 02:25:02,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-02-22 02:25:02,863 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2021-02-22 02:25:02,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-22 02:25:02,863 INFO L480 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-02-22 02:25:02,864 INFO L481 AbstractCegarLoop]: Interpolant automaton has 11 states. [2021-02-22 02:25:02,864 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-02-22 02:25:02,864 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-02-22 02:25:02,864 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-22 02:25:02,867 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-02-22 02:25:03,352 INFO L189 CegarLoopUtils]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2021-02-22 02:25:03,352 INFO L189 CegarLoopUtils]: For program point reach_errorENTRY(line 3) no Hoare annotation was computed. [2021-02-22 02:25:03,352 INFO L189 CegarLoopUtils]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2021-02-22 02:25:03,353 INFO L192 CegarLoopUtils]: At program point L3-2(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,353 INFO L192 CegarLoopUtils]: At program point L3-3(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,353 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:25:03,353 INFO L192 CegarLoopUtils]: At program point L3-4(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,353 INFO L192 CegarLoopUtils]: At program point L-1-1(line -1) the Hoare annotation is: true [2021-02-22 02:25:03,353 INFO L192 CegarLoopUtils]: At program point L3-5(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,354 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initFINAL(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,354 INFO L192 CegarLoopUtils]: At program point L3-6(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,354 INFO L192 CegarLoopUtils]: At program point L3-7(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,354 INFO L192 CegarLoopUtils]: At program point L3-8(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,354 INFO L192 CegarLoopUtils]: At program point L3-9(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,354 INFO L192 CegarLoopUtils]: At program point L3-10(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,355 INFO L185 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)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2021-02-22 02:25:03,355 INFO L192 CegarLoopUtils]: At program point L3(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,355 INFO L192 CegarLoopUtils]: At program point L3-1(line 3) the Hoare annotation is: true [2021-02-22 02:25:03,355 INFO L192 CegarLoopUtils]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:25:03,356 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2021-02-22 02:25:03,356 INFO L192 CegarLoopUtils]: At program point L-1(line -1) the Hoare annotation is: true [2021-02-22 02:25:03,356 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2021-02-22 02:25:03,356 INFO L192 CegarLoopUtils]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2021-02-22 02:25:03,356 INFO L192 CegarLoopUtils]: At program point mainENTRY(lines 11 18) the Hoare annotation is: true [2021-02-22 02:25:03,356 INFO L192 CegarLoopUtils]: At program point mainEXIT(lines 11 18) the Hoare annotation is: true [2021-02-22 02:25:03,357 INFO L192 CegarLoopUtils]: At program point L16(line 16) the Hoare annotation is: true [2021-02-22 02:25:03,357 INFO L185 CegarLoopUtils]: At program point L14(line 14) the Hoare annotation is: (<= 1 (+ main_~x~0 (* 2 (div (+ (* main_~x~0 (- 1)) 1) 2)))) [2021-02-22 02:25:03,357 INFO L192 CegarLoopUtils]: At program point mainFINAL(lines 11 18) the Hoare annotation is: true [2021-02-22 02:25:03,357 INFO L185 CegarLoopUtils]: At program point L13-1(lines 13 15) the Hoare annotation is: (<= 1 (+ main_~x~0 (* 2 (div (+ (* main_~x~0 (- 1)) 1) 2)))) [2021-02-22 02:25:03,357 INFO L185 CegarLoopUtils]: At program point L13-2(line 13) the Hoare annotation is: (<= 1 (+ main_~x~0 (* 2 (div (+ (* main_~x~0 (- 1)) 1) 2)))) [2021-02-22 02:25:03,358 INFO L185 CegarLoopUtils]: At program point L13-4(line 13) the Hoare annotation is: (<= 1 (+ main_~x~0 (* 2 (div (+ (* main_~x~0 (- 1)) 1) 2)))) [2021-02-22 02:25:03,358 INFO L185 CegarLoopUtils]: At program point L13-5(lines 13 15) the Hoare annotation is: (<= 1 (+ main_~x~0 (* 2 (div (+ (* main_~x~0 (- 1)) 1) 2)))) [2021-02-22 02:25:03,358 INFO L185 CegarLoopUtils]: At program point L13-6(lines 13 15) the Hoare annotation is: (<= 1 (+ main_~x~0 (* 2 (div (+ (* main_~x~0 (- 1)) 1) 2)))) [2021-02-22 02:25:03,358 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2021-02-22 02:25:03,358 INFO L192 CegarLoopUtils]: At program point __VERIFIER_assertEXIT(lines 5 10) the Hoare annotation is: true [2021-02-22 02:25:03,359 INFO L185 CegarLoopUtils]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2021-02-22 02:25:03,359 INFO L185 CegarLoopUtils]: At program point L6(lines 6 8) the Hoare annotation is: (or (<= 1 __VERIFIER_assert_~cond) (not (<= 1 |__VERIFIER_assert_#in~cond|))) [2021-02-22 02:25:03,359 INFO L185 CegarLoopUtils]: At program point L7-1(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2021-02-22 02:25:03,359 INFO L192 CegarLoopUtils]: At program point L6-2(lines 5 10) the Hoare annotation is: true [2021-02-22 02:25:03,360 INFO L185 CegarLoopUtils]: At program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2021-02-22 02:25:03,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.02 02:25:03 BoogieIcfgContainer [2021-02-22 02:25:03,379 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-22 02:25:03,381 INFO L168 Benchmark]: Toolchain (without parser) took 4062.12 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 127.6 MB in the beginning and 116.4 MB in the end (delta: 11.2 MB). Peak memory consumption was 97.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:03,381 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-22 02:25:03,382 INFO L168 Benchmark]: CACSL2BoogieTranslator took 267.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:03,383 INFO L168 Benchmark]: Boogie Preprocessor took 41.09 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:03,384 INFO L168 Benchmark]: RCFGBuilder took 530.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 101.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:03,385 INFO L168 Benchmark]: TraceAbstraction took 3204.69 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 116.4 MB in the end (delta: -15.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 8.0 GB. [2021-02-22 02:25:03,388 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 151.0 MB. Free memory is still 124.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 267.74 ms. Allocated memory is still 151.0 MB. Free memory was 126.5 MB in the beginning and 117.3 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 41.09 ms. Allocated memory is still 151.0 MB. Free memory was 117.3 MB in the beginning and 115.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 530.19 ms. Allocated memory is still 151.0 MB. Free memory was 115.8 MB in the beginning and 101.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 13.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3204.69 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 101.3 MB in the beginning and 116.4 MB in the end (delta: -15.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 7]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 <= x + 2 * ((x * -1 + 1) / 2) - ProcedureContractResult [Line: 11]: Procedure Contract for main Derived contract for procedure main: 1 - ProcedureContractResult [Line: 5]: Procedure Contract for __VERIFIER_assert Derived contract for procedure __VERIFIER_assert: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.6s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.4s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 89 SDtfs, 68 SDslu, 160 SDs, 0 SdLazy, 119 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 3 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=37occurred 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, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 37 LocationsWithAnnotation, 58 PreInvPairs, 82 NumberOfFragments, 155 HoareAnnotationTreeSize, 58 FomulaSimplifications, 396 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 37 FomulaSimplificationsInter, 882 FormulaSimplificationTreeSizeReductionInter, 0.3s 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 RESULT: Ultimate proved your program to be correct! Received shutdown request...